Entries |
Document | Title | Date |
20080200909 | Laser fiber holder - A laser fiber holder for exposing laser energy to living tissue, comprising a longitudinal sleeve having a translucent distal end section for encasing an extendible laser fiber tip energizable for exposing laser energy to living tissue and a proximal end having a smaller opening for cooperatively engaging the laser fiber in a friction fit holding the fiber within the sleeve at a desired length and holding the tip at a set distance invention the tissue providing laser energy at selected point above the tissue and protecting the eyes of the user from direct laser light. | 08-21-2008 |
20080208180 | ENDOVASCULAR TREATMENT SHEATH HAVING A HEAT INSULATIVE TIP AND METHOD FOR USING THE SAME - A treatment sheath for use with an energy delivery device, such as an optical fiber, is provided with a heat insulative tip. The treatment sheath includes a longitudinal shaft which is designed to receive the optical fiber, and is inserted into a blood vessel to treat diseases such as varicose veins. During treatment, the energy emitting face of the optical fiber is positioned inside the heat insulative tip of the treatment sheath. The heat insulative tip protects the optical fiber emitting face during the delivery of laser energy and prevents the emitting face from inadvertently contacting the inner vessel wall. | 08-28-2008 |
20080215041 | Cannula/optical fibre assembly and laser instrument including said assembly - The assembly includes a cannula, which comprises an opening at a so-called distal extremity and electromagnetic radiation wave guiding means, which include an optical fibre introduced inside the cannula and which enable the electromagnetic radiation to be guided to the opening of the distal extremity of the cannula, in such a way that this electromagnetic radiation is emitted frontally by said distal opening of the cannula. The external diameter of the protective sheath of the optical fibre is essentially equal to the internal diameter of the cannula in at least one distal portion of said cannula; the core of the optical fibre is stripped on a distal part of the fibre, and the stripped distal part of the optical fibre is accommodated entirely inside the cannula. | 09-04-2008 |
20080249517 | Light Coupling Adapter Device For Photodynamic Or Photothermal Therapy Or Photodynamic Diagnosis, Corresponding System And Method - A system configured for photodynamic or photothermal therapy and photodynamic diagnosis of a tissue is | 10-09-2008 |
20080255549 | PHOTODYNAMIC THERAPY DEVICE - The invention described herein is an apparatus for performing photodynamic therapy comprising: a waveguide, a light source in communication with one end of the waveguide, a photodynamic tip in communication with another end of the waveguide wherein the photodynamic tip is designed to be securely but removably attached to a scaling tip of a scaler and the apparatus delivers light in a desired illumination pattern and in at least one predetermined wavelength to activate a photosensitizing composition for the killing of microbes. The invention also includes a method for using the apparatus in conjunction with a scaler to perform sonophotodynamic therapy and a method for making the apparatus. | 10-16-2008 |
20080262485 | METHOD AND SYSTEM FOR PHOTOSELECTIVE VAPORIZATION OF THE PROSTATE, AND OTHER TISSUE - A method for photoselective vaporization of prostate tissue includes delivering laser radiation to the treatment area on the tissue, via an optical fiber for example, wherein the laser radiation has a wavelength and irradiance in the treatment area on the surface of the tissue sufficient because vaporization of a substantially greater volume of tissue than a volume of residual coagulated tissue caused by the laser radiation. The laser radiation is generated using a neodymium doped solid-state laser, including optics producing a second or higher harmonic output with greater than 60 watts average output power. The delivered laser radiation has a wavelength for example in a range of about 200 nm to about 650 nm, and has an average irradiance in the treatment area greater than about 10 kilowatts/cm | 10-23-2008 |
20080269734 | Optical Array for Treating Biological Tissue - Skin can be treated by penetrating an epidermis of the skin with a plurality of waveguides. Each waveguide has an end, which is positioned within a dermis of the skin. Electromagnetic radiation can be delivered through the plurality of waveguides to the dermis having a port wine stain for a time sufficient to selectively destroy a cutaneous blood vessel within the port wine stain. The time is less than a thermal diffusion time between the epidermis and the dermis to prevent forming substantial unwanted thermal injury within the epidermis. | 10-30-2008 |
20080269735 | Optical array for treating biological tissue - An apparatus can treat biological tissue using a base member, a plurality of needles, and a plurality of fiber optics. The plurality of needles extend from the base member. Each needle defines a bore capable of receiving a fiber optic and has an end. The plurality of needles form an array capable of penetrating a biological tissue and positioning each end within a subsurface volume of the biological tissue. Each fiber optic is adapted for insertion into the bore of each needle, and each fiber optic is capable of delivering electromagnetic radiation to the subsurface volume of the biological tissue to treat the biological tissue. | 10-30-2008 |
20080275435 | Illuminated Laser Probe with Multiplied Area of Illumination - A microsurgical laser probe has a handle and a tubular tip that projects from the handle, and three optic fibers that extend through the handle and the tip. One of the optic fibers is a laser optic fiber that is adapted to be connected to a source of laser light at one end of the laser optic fiber, and to transmit the laser light from the opposite end of the laser optic fiber at the distal end of the instrument tip. The other two optic fibers are illumination light optic fibers. Each illumination light optic fiber has one end that is adapted to be connected to a illumination light source, and an opposite end that projects the illumination light from the distal end of the instrument tip. By providing two laser light optic fibers in the instrument, the amount of illumination directed to the surgical site being accessed by the laser optic fiber is effectively doubled. | 11-06-2008 |
20080281308 | Device and method for improved vascular laser treatment - An improved treatment set and an improved method for endovascular laser treatments are described. The treatment set comprises an introducer sheath or tip and an optical waveguide for allowing the treatment set to be guided within a blood vessel. The s introducer sheath itself acts as the guide wire in one embodiment of the procedure. The introducer includes a means for protecting the tip of the optical fiber while the set is being positioned within the vessel and protecting the introducer tip from damaging the vessel. The method includes the steps of inserting the introducer/optical waveguide combination into a blood vessel to be treated, positioning the distal end of the introducer at a proper position in the blood vessel; advancing the optical fiber through a protective cap and/or means, and irradiating the blood vessel, preferably while withdrawing the treatment set toward the point of insertion. In another embodiment, the introducer/optical fiber combination includes a monorail groove within which a guidewire resides, wherein the optical fiber resides within the introducer and is advanced along the guidewire prior to treatment. The invention is advantageous in that it is quicker, as it requires fewer parts and fewer steps for effective treatment than do prior art devices and methods. | 11-13-2008 |
20080287938 | Illuminated Directional Laser Probe - An ophthalmic surgery illuminated directional laser probe has a handle and a rigid tubular tip projecting from the handle, and has an illumination optic fiber and a laser optic fiber that extend through the handle and the tip. A mechanism on the handle is operable to extend distal ends of the illumination optic fiber and the laser optic fiber from the distal end of the instrument tip, and to retract the distal ends of the illumination optic fiber and the laser optic fiber back into the interior of the tip. At least one of the distal ends of the illumination optic fiber and the laser optic fiber is held in a curved configuration. The distal ends of the illumination optic fiber and the laser optic fiber are secured to each other, whereby both the illumination optic fiber and the laser optic fiber curve into a bent configuration as the distal ends of the illumination optic fiber and the laser optic fiber are extended from the distal end of the instrument tip. | 11-20-2008 |
20080287939 | ENDOVASCULAR THERMAL TREATMENT DEVICE WITH FLEXIBLE GUIDE TIP AND METHOD - An elongated thermal energy delivery device for use in endovenous thermal treatment of blood vessel is provided. The energy device includes a flexible guide tip attached to its distal portion which provides for direct tracking and advancement of the energy device through the vein without the use of a treatment sheath. Also provided is a method of using the thermal energy delivery device with flexible guide tip. The method eliminates the need for a treatment sheath and accessory procedural components and the procedural steps associated with these components. | 11-20-2008 |
20080300583 | Vascular laser treatment device and method - An improved device and method for safer and more efficient laser vein treatments are presented. The device includes an optical waveguide optically coupled to a radiation source at its proximal end, having a core, a cladding layer and a tip configured to protect the clad-core, e.g., from contact with collapsing vein walls during laser vein treatment, and to enhance treatment efficiency through improved centering. According to one embodiment, the clad-core is recessed within one or more jacket layers. In some embodiments, the protective jacket on the clad-core may be left on when the jacket layer is added. In embodiments, one or more protective wires are attached to the clad-core or a jacket layer and extend distally past the clad-core. In some such embodiments, three protective wires are substantially equally spaced relative to each other about the circumference of the core, i.e., forming an equilateral triangular pattern. The optical waveguide is useable in conjunction with an introducer structure having protective means to prevent damage to the vein walls, e.g., perforating the vein walls, during insertion of the optical waveguide into the vein. A method of using the device is also disclosed wherein a distal end of the optical waveguide is advanced to a desired position and essentially centered in the vein, and a predetermined wavelength of radiation is output from the distal end of the optical fiber while the optical waveguide is simultaneously withdrawn from the vein. | 12-04-2008 |
20090012511 | SURGICAL WAVEGUIDE - A surgical probe is disclosed which includes a stiff treatment waveguide extending between a first end and a second end, the first end being adapted for connection to a handpiece, the second end being adapted for insertion through an incision into an area of tissue. The treatment waveguide in configured to receive treatment light from the handpiece at the first end, transmit the light to the second end, and emit the light from the second end into a portion of the tissue proximal the second end. The treatment waveguide is adapted to penetrate through a portion of the area of tissue in response to pressure applied to the handpiece. | 01-08-2009 |
20090054884 | METHOD OF LIGATING HOLLOW ANATOMICAL STRUCTURES - A catheter includes a plurality of expandable primary leads to deliver energy to a fallopian tube, a vein such as a hemorrhoid or an esophageal varix, or another hollow anatomical structure requiring ligation or occlusion. Each of the primary leads includes an electrode located at the working end of the catheter. Separation is maintained between the primary leads such that the leads can receive power of selected polarity. The primary leads are constructed to expand outwardly to place the electrodes into apposition with a hollow anatomical structure. High frequency energy can be applied from the leads to create a heating effect in the surrounding tissue of the anatomical structure. The diameter of the hollow anatomical structure is reduced by the heating effect, and the electrodes of the primary leads are moved closer to one another. | 02-26-2009 |
20090062782 | Laser Delivery Apparatus With Safety Feedback System - An apparatus and method for delivery of energy to a tissue within a patient includes optical or electrical feedback to detect effects of overheating and/or burning of tissues, bodily fluids, or the apparatus itself, circuitry for controlling the delivery apparatus, and/or indicators to facilitate operator control. Provision is also made for fiber position detection to facilitate manual or automatic control of fiber positioning or withdrawal relative to or through an introducer. | 03-05-2009 |
20090076489 | THERMAL SURGERY SAFETY APPARATUS AND METHOD - A laser surgical method is disclosed including: providing a laser surgical device including a handpiece including: an optical delivery component that transmits laser energy from a source to a treatment volume; and an accelerometer configured to provide information indicative of the position of the handpiece. The method includes using the handpiece to transmit laser energy from the source to a plurality of positions within the treatment volume; using the accelerometer, providing information indicative of the position of the handpiece; determining information indicative of an amount of energy delivered at each of the plurality of positions within the treatment volume based on the information indicative of the position of the handpiece, and displaying a graphical representation indicative of the amount of energy delivered at each of the plurality of positions within the treatment volume. | 03-19-2009 |
20090076490 | FIBER TIP FLUID OUTPUT DEVICE - A fiber tip fluid output device is provided for holding a fiber tip in an electromagnetic energy cutting apparatus and for directing water particles over a radiation delivery end of the fiber tip. The fiber tip fluid output device includes a generally cylindrical body having an outer surface, a proximal end, a distal end, and a lumen extending between the proximal end and the distal end. The lumen is sized and shaped to accommodate a fiber tip therethrough so that the fiber tip extends through the lumen from the proximal end to the distal end of the generally cylindrical body. The fiber tip fluid output device further includes a plurality of apertures extending around the generally cylindrical body, with each of the apertures of the plurality of apertures fluidly connecting the outer surface to the lumen. Fluid is mixed around the cylindrical body, before entering the lumen through the plurality of apertures for additional mixing. The mixed fluid is then output from the lumen of the fiber tip fluid output device onto the fiber tip, for subsequent interaction with electromagnetic energy in an interaction zone above a target surface. | 03-19-2009 |
20090082760 | GUIDEWIRE TIPPED LASER FIBER - A device for application of energy within a tubular bodily structure including an optical fiber couplable to a source of laser energy and a guidewire tip. The optical fiber has a laser emitting portion remote from the source of laser energy and a distal end. The guidewire tip is operably secured to the optical fiber and extends distally outwardly away from the distal end of the optical fiber. The guidewire tip assists in advancing the device through the tubular bodily structure. | 03-26-2009 |
20090093800 | Flexible Surgical Probe - A probe having a flexible, small diameter fiber sheathed in a small diameter flexible tube comprising the distal tip of the probe. The small diameters of the fiber and tube allow the fiber to be bent in a tighter radius along essentially the entire length of the exposed portion of the fiber, with low tube bending forces during insertion, providing a compact design which eliminates the need for a straight distal portion. The small diameter tube also allows a greater wall thickness outer cannula to be used, thereby increasing instrument rigidity. This compact, rigid design with low insertion forces allows the fiber greater access to the internal posterior structures of the eye, while providing increased instrument rigidity for manipulation of the eye, as well as low insertion forces. | 04-09-2009 |
20090112198 | LIQUID LIGHT GUIDE CATHETER HAVING BIOCOMPATIBLE LIQUID LIGHT GUIDE MEDIUM - A catheter system to ablate target matter within a mammalian body using light energy is described. The system may include an open-ended catheter tip through which a liquid light guide medium flows to the target matter, where at least a portion of the liquid light guide medium exiting the catheter tip creates a fluid optical channel to transmit the light energy from the catheter tip to the target matter. The system may also include a catheter lumen whose distal end includes the open-ended catheter tip, a light source to generate the light energy, and a liquid light guide medium source fluidly coupled to the catheter lumen. The liquid light guide medium source may include a reservoir of the liquid light guide medium that includes a magnesium chloride solution or a lactated Ringer's solution. | 04-30-2009 |
20090112199 | EP SIGNAL MAPPING-BASED OPTICAL ABLATION FOR PATIENT MONITORING AND MEDICAL APPLICATIONS - A system and method are disclosed for utilizing a single integrated EP/ablation catheter to treat cardiac arrhythmias. The disclosed catheter combines the EP signal monitoring of a traditional EP diagnostic catheter, and optical energy for the ablation therapy, which is expected to provide a more efficient, accurate and reliable method of cardiac ablation than current RF techniques since it is based on real-time EP signal mapping, with precise pathological tissue localization, cardiac arrhythmia severity characterization and delivers predictable energy doses with continuous safety monitoring of the intracardiac signals. | 04-30-2009 |
20090125007 | Intra-Vascular Device With Pressure Detection Capabilities Using Pressure Sensitive Material - A laser catheter with a pressure sensor is provided according to embodiments of the invention. The pressure sensor may be coupled with the distal end of the laser catheter and may comprise any of various piezoelectric materials, for example Polyvinylidene Difluoride (PVDF). In various embodiments of the invention the pressure sensor is configured to detect pressure longitudinally and coaxially. The pressure sensor may provide an electric potential that is proportional to the vessel pressure and may be used to monitor and/or adjust laser parameters. In other embodiments the results from the pressure sensor may be used to determine the vessel size and/or the type of material being ablated. | 05-14-2009 |
20090131924 | Endovascular Thermal Treatment Device with Carrier Wire and Method - An endovenous thermal treatment device in which a thermal energy delivery device can be inserted into a blood vessel without the use of a treatment sheath is provided. The treatment device includes a carrier wire having a flexible distal section and a longitudinal energy delivery device having a distal energy emitting section. A coupler couples the carrier wire and the energy delivery device so that they are inserted together into a blood vessel. | 05-21-2009 |
20090137998 | EXPANDABLE VEIN LIGATOR CATHETER HAVING MULTIPLE ELECTRODE LEADS, AND METHOD - A catheter includes a plurality of primary leads to deliver energy for ligating a hollow anatomical structure. Each of the primary leads includes an electrode located at the working end of the catheter. Separation is maintained between the primary leads such that each primary lead can individually receive power of selected polarity. The primary leads are constructed to expand outwardly to place the electrodes into apposition with an anatomical structure. High frequency energy can be applied from the leads to create a heating effect in the surrounding tissue of the anatomical structure. The diameter of the hollow anatomical structure is reduced by the heating effect, and the electrodes of the primary leads are moved closer to one another. Where the hollow anatomical structure is a vein, energy is applied until the diameter of the vein is reduced to the point where the vein is occluded. In one embodiment, a secondary lead is surrounded by the primary leads, and extends beyond the primary leads. The secondary lead includes an electrode at the working end of the catheter. The secondary lead can have a polarity opposite to the polarity of the primary leads in a bipolar configuration. The polarity of the leads can be switched and the catheter can be moved during treatment to ligate an extended length of the vein. The catheter can include a lumen to accommodate a guide wire or to allow fluid delivery. | 05-28-2009 |
20090137999 | METHOD OF AND SYSTEM FOR SELECTIVE CELL DESTRUCTION - Method and apparatus for the ionization of living cells where an optical device ( | 05-28-2009 |
20090171332 | MEDICAL DEVICE WITH ORIENTABLE TIP FOR ROBOTICALLY DIRECTED LASER CUTTING AND BIOMATERIAL APPLICATION - A medical device used in a medical robotic system has a conduit and an orientable tip. An optical fiber coupled to a laser source and/or a catheter coupled to one or more biomaterial sources extends through the conduit and tip so that the tip of the medical device may be robotically directed towards a target tissue for laser and/or biomaterial application as part of a medical procedure performed at a surgical site within a patient. A protective sheath covers the fiber as it extends through the conduit and tip. A first coupler adjustably secures at least the sheath to the medical device and a second coupler adjustably secures the fiber to at least the sheath. A similar dual coupler mechanism may be used to secure the sheathed catheter to the medical device. | 07-02-2009 |
20090182313 | Targeted Illumination For Surgical Instrument - An illuminated surgical instrument has a working area located near an end of the instrument. An array of optical fibers terminates near the end of the instrument. The array of optical fibers is located adjacent to the instrument such that the array of optical fibers provides targeted illumination to the working area only on one side of the instrument. | 07-16-2009 |
20090182314 | WORKING TOOL FOR LASER-FACILITATED REMOVAL OF TISSUE FROM A BODY CAVITY AND METHODS THEREOF - Apparatus is provided, including an intraluminal tube having a proximal end and a distal end, the tube being shaped to provide a longitudinal lumen. A treatment element, having a proximal end and a distal end, is disposed within the lumen of the tube. A handle assembly is coupled to the proximal end of the tube. A user offset controller is coupled to the handle assembly, and is configured to set an offset of the distal end of the treatment element with respect to the distal end of the tube. Other embodiments are also described. | 07-16-2009 |
20090182315 | LASER LIPOSUCTION SYSTEM AND METHOD - A device and method for adipose tissue liquefaction and removal (liposuction) by means of laser energy is disclosed. The device comprises a medical laser system, an optical fiber, an innovative handpiece and a vacuum pumping system. The device is capable of liquefying and removing adipose tissue essentially simultaneously due to the innovative handpiece, which comprises an outer tube for adipose tissue extraction and an inner tube in which optical fiber is inserted and shielded. Furthermore, the optical fiber is isolated from external contamination with a transparent quartz tip or cap on the inner tube, which permits laser radiation output while avoiding liquid and tissue input. The transparent tip or cap can also be made of sapphire or fused synthetic silica. With this safer and improved process, enhanced liposuction treatments are possible with reduced bleeding, gentler and shorter treatment and quick patient recovery. | 07-16-2009 |
20090192503 | DEVICE, APPARATUS, AND METHOD OF ADIPOSE TISSUE TREATMENT - An improved procedure for performing liposuction is obtained by utilizing a needle that includes a laser source conductor with one end of the needle being configured for insertion into a target adipose skin volume and the other end being coupled to a laser source. The needle may include one or more channels for extracting the treated adipose area. A vacuum source can be used in the extraction of the treated adipose. Further, the first end of the needle may include a cap or end-piece that reduces the build up of carbon deposits. A temperature sensor may be used as input to adjust the laser power and prevent over exposure. | 07-30-2009 |
20090198223 | SYSTEMS AND METHODS FOR CARDIAC ABLATION USING LASER INDUCED OPTICAL BREAKDOWN - Systems and methods for achieving sub-surface, highly spatially selective cardiac ablation by means of laser induced optical breakdown (LIOB) are disclosed. Damage to non-targeted heart and artery/vein tissue is to be minimized according to the present disclosure. A catheter enters the heart, e.g., via a vein, and catheter location is determined/confirmed. Laser pulses are guided through the optical path within the catheter and, at or near the catheter end, a focusing structure is provided that focuses the laser radiation through the non-targeted vein/heart tissue into the targeted tissue. In the focusing structure, laser induced LIOB occurs and related mechanical effects affect the targeted tissue. | 08-06-2009 |
20090204111 | LIGHT DELIVERY DEVICE - A light delivery device comprising an optical fiber having a non-feature portion and a feature portion having features that force light to couple out radially from the feature portion and provide a desired radial light output pattern. A method of photodisinfection of a cavity comprising of providing this device, apply a photosensitizing composition to treatment site within the cavity, and inserting at least a portion of the device into the cavity; and applying light delivered by the device from a light source to the treatment site within the cavity at a wavelength absorbed by the photosensitizing composition so as to inhibit or eliminate microbes located at the treatment site. The present invention also includes a method of making the device and a treatment kit containing the device and a container containing a photosensitizing composition. | 08-13-2009 |
20090221997 | COAXIAL CATHETER INSTRUMENTS FOR ABLATION WITH RADIANT ENERGY - A cardiac ablation instrument capable of removing blood from a treatment area is provided. The instrument includes a catheter configured to deliver a distal end thereof to a patient's heart. The instrument can also include an expandable element coupled to the distal end of the catheter wherein the expandable member is configured to be positioned adjacent a target area thereby defining a treatment area between the expandable member and the target area. Further, the instrument can include an irrigation mechanism configured to dispense an irrigation fluid from the catheter thereby displacing blood from the treatment area. Additionally, the instrument includes an energy emitter configured to deliver energy to tissue within the treatment area. The instrument can also include a contact sensor configured to determine the presence of such blood within the treatment area. Methods for ablating tissue are also provided. | 09-03-2009 |
20090254074 | LIQUID LIGHT-GUIDE CATHETER WITH OPTICALLY DIVERGING TIP - A light-diverting catheter tip is provided according to embodiments disclosed herein. The light-diverting catheter tip may be coupled with the distal tip of a laser catheter and divert at least a portion of the light exiting the distal tip of the laser catheter such that the spot size of the laser beam on an object after exiting the catheter tip is larger than the spot size of the light entering the catheter without the catheter tip. The catheter tip may be removably coupled with the catheter or constructed as part of the catheter. In other embodiments, the catheter tip may conduct fluid and/or divert fluid at the tip of the laser catheter. | 10-08-2009 |
20090264875 | Method of Treating a Blood Vessel with an Optical Fiber Having a Spacer - An endovascular laser treatment device designed to be used with an optical fiber to treat venous diseases such as varicose veins is provided. The device includes a expandable separator that positions the distal end of the optical fiber away from the inner wall of the blood vessel during delivery of laser energy to provide an even distribution of thermal energy around the vessel, thereby avoiding vessel perforation and incomplete vessel collapse. | 10-22-2009 |
20090270850 | DEVICES AND METHODS FOR THE ABLATION OF TISSUE IN THE LATERAL DIRECTION - Various devices for ablating tissue in a lateral direction and methods of operation thereof. One embodiment of such a device includes: (1) an elongated body configured to carry ablative energy from an ablative energy source associated with a proximal end to a distal end and (2) a distal tip located at the distal end, the distal tip configured to deliver the ablative energy in a direction substantially lateral to a longitudinal axis of the elongated body. | 10-29-2009 |
20090275931 | Laser Applicator - A laser applicator has a catheter ( | 11-05-2009 |
20090275932 | LASER ENERGY DEVICES AND METHODS FOR SOFT TISSUE REMOVAL - A laser energy soft tissue aspiration device comprises a cannula defining an aspiration lumen and having one or more aspiration inlet ports at a distal end. A laser energy transmission guide delivers laser energy from the proximal end of the cannula to the distal end which can be inserted to a tissue removal site within a patient. Reciprocating longitudinal motion of the cannula along with suction provided within the lumen can cause soft tissue to be suctioned into the lumen for removal. Laser energy contained within the lumen and directed by an optical delivery system can ablate soft tissue pulled within the lumen. The optical delivery system can further protect the terminal point of the laser energy transmission guide, from which, the laser energy can be delivered. | 11-05-2009 |
20090275933 | LASER ENERGY DEVICES AND METHODS FOR SOFT TISSUE REMOVAL - A laser energy soft tissue aspiration device comprises a cannula defining an aspiration lumen and having one or more aspiration inlet ports at a distal end. A laser energy transmission guide delivers laser energy from the proximal end of the cannula to the distal end which can be inserted to a tissue removal site within a patient. Reciprocating longitudinal motion of the cannula along with suction provided within the lumen can cause soft tissue to be suctioned into the lumen for removal. Laser energy contained within the lumen and directed by an optical delivery system can ablate soft tissue pulled within the lumen. The optical delivery system can further protect the terminal point of the laser energy transmission guide by isolating it, or removing it from the flow of aspirated tissue. | 11-05-2009 |
20090275934 | ABLATION INSTRUMENT HAVING DEFLECTABLE SHEATH CATHETERS WITH OUT-OF PLANE BENT TIP - The present invention provides devices and methods for the treatment of atrial fibrillation. In one embodiment, a deflectable sheath catheter includes an elongate catheter body having proximal and distal ends, a deflectable end section at the distal end of the catheter body, which upon deflection causes the distal end segment to bend into various curved positions within a plane of deflection, and a bent tip oriented in a direction that is out of the plane of deflection. | 11-05-2009 |
20090287197 | SIDE-FIRING LASER FIBER WITH INTERNAL BENT FIBER AND RELATED METHODS - A method and an apparatus according to an embodiment includes a distal end portion of an optical fiber disposed inside a lumen defined along a curved path within a capillary. The distal end surface of the optical fiber can be substantially flush with a portion of an outside surface of the capillary that defines a transmissive portion. The distal end portion of the optical fiber and the curved path can be collectively configured to direct laser energy through the transmissive portion in a lateral or side-fired direction that is offset from a longitudinal axis or centerline of the capillary. In some embodiments, more than one optical fiber can be disposed along the curved path. In other embodiments, more than one curved path can be defined within the capillary such that a distal end portion of an optical fiber can be disposed along each of the curved paths. | 11-19-2009 |
20090287198 | DIELECTRIC COATINGS FOR TOTAL-INTERNAL-REFLECTION SURFACE OF LASER FIBER AND RELATED METHODS - A method and an apparatus according to an embodiment includes a distal end portion of an optical fiber core having a multilayer dielectric coating. For side-firing optical fibers, the coating can be disposed on an angled surface at the core distal end to produce total internal reflection of laser energy at the angled surface. The coating can also be disposed on an outer surface of the distal end portion of the core. The coating and the angled surface can be collectively configured to redirect laser energy in a lateral or side-fired direction. For end-firing optical fibers, the coating can be disposed on an outer surface of the distal end portion of the core. The coating and a perpendicular surface at the core distal end can be collectively configured to direct laser energy in a direction substantially parallel to the distal end portion of the optical fiber. | 11-19-2009 |
20090287199 | SIDE-FIRING LASER FIBER WITH PROTECTIVE TIP AND RELATED METHODS - A method and an apparatus according to an embodiment of the invention includes a reflector disposed within a capillary for use in side-firing optical fibers. An outer member or cap can be used to protect the capillary when being inserted through a catheter or endoscope. The endoscope is then at least partially inserted into a patient's body to provide laser-based medical treatment. In some embodiments, a multilayer dielectric coating can be disposed on an angled surface of the reflector. In other embodiments, a multilayer dielectric coating can be positioned between a distal end surface of the reflector and an inner side of a distal end portion of the capillary. The coated reflector can be configured to increase laser energy redirected from a first portion of an optical path to a second portion of the optical path that is non-parallel to the first portion. | 11-19-2009 |
20090287200 | SIDE-FIRING LASER FIBER WITH GLASS FUSED REFLECTOR AND CAPILLARY AND RELATED METHODS - A method and an apparatus according to an embodiment of the invention includes a reflector and an optical fiber end portion disposed within a capillary for use in side-firing optical fibers. The reflector surface can be coated with a multilayer dielectric coating to increase the amount of side-fired laser energy. An outer member or cap can be used to protect the capillary when being inserted through a catheter or endoscope. The endoscope is then at least partially inserted into a patient's body to provide laser-based medical treatment. Multiple grooves can be defined on an outer surface of the optical fiber buffer layer to increase the surface area and improve the mechanical strength of the coupling between the optical fiber and the capillary. In some embodiments, the outer member or cap can also be coupled to the grooved surface portion of the optical fiber buffer layer. | 11-19-2009 |
20090299351 | Laser Catheter Calibrator - A catheter assembly is disclosed according to one embodiment of the invention. The assembly includes a catheter body, a housing and a detector. The catheter includes a distal tip, a proximal end, and a fiber optic extending between the proximal end and the distal tip. The housing may include a channel adapted to support at least a portion of the distal tip of the catheter. The may be detector disposed within the housing so as to be spaced a fixed distance from the distal tip of the catheter. Methods for providing and calibrating a catheter supported within housing are also disclosed according to other embodiments of the invention. | 12-03-2009 |
20090299352 | STEERABLE LASER-ENERGY DELIVERY DEVICE - In one embodiment, an apparatus includes an optical fiber that includes a fiber core with a substantially constant outer diameter of less than or equal to 250 microns extending to a distal end of the optical fiber. The optical fiber is also configured to deliver laser energy up to at least 100 watts to a target area within a patient. The optical fiber is sufficiently flexible such that the optical fiber can be moved between a first configuration in which a distal end portion of the optical fiber is substantially linear and defines a longitudinal axis and a second configuration in which the distal end portion of the optical fiber is moved off its longitudinal axis. The apparatus also includes a steering mechanism coupled to the optical fiber. The steering mechanism is configured to move the optical fiber between its first configuration and its second configuration. | 12-03-2009 |
20090306637 | ENERGY DEVICES AND METHODS FOR TREATING HOLLOW ANATOMICAL STRUCTURES - Apparatus and methods for segmental treatment of hollow anatomical structures using an optical fiber are disclosed. An elongate energy application device can absorb, scatter and/or reflect laser energy over a length of the elongate energy application device to thereby treat the hollow anatomical structure along one or more lengthened treatment segments. | 12-10-2009 |
20090326525 | LASER FIBER CAPILLARY APPARATUS AND METHOD - A method and an apparatus according to an embodiment of the invention includes a capillary for use in side-firing optical fibers. An outer surface of the capillary defines a recessed transmissive portion of the capillary. The area of the recessed transmissive portion can be a four-sided area or an area with a rounded boundary, for example. An optical-fiber-core end portion disposed within the capillary can include an end surface configured to redirect laser energy in a lateral direction and through the recessed transmissive portion of the capillary. The lateral direction can be substantially normal to the recessed transmissive portion of the capillary and offset from a longitudinal axis of the distal end portion of the core. The end surface of the core can be non-perpendicular to the longitudinal axis. In some embodiments, a multilayer dielectric coating can be disposed on the end surface of the core. | 12-31-2009 |
20100016844 | TRANSILLUMINATING FOLEY CATHETER TO FACILITATE PROSTATE AND BLADDER SURGERY - A catheter assembly includes an elongated flexible (transparent or translucent) tube with a drainage lumen, an inflatable balloon fluidly coupled to an inflation adapter by an inflation lumen, and an illumination adapter configured to optically couple a light source to the catheter assembly. At least one illumination lumen contains at least one flexible elongated light emitting element such as an optical fiber, OLED fiber, LED strand or waveguide adapted to emit light at one or more points along the length of the flexible elongated light emitting element. The flexible elongated light emitting element emits sensible light through the bladder and through the urethra between the urethral meatus and prostate to illuminate the bladder, the bladder neck, the urethra adjacent to the prostate and surrounding tissue, thereby reducing the risk of damage to adjacent tissue. To provide various colors of light, colored light sources and/or colored filters may be utilized. To enable emission of light at determined points of an optical fiber, cladding (and jacket, if any) is removed from the optical fiber. | 01-21-2010 |
20100016845 | METHOD AND APPARATUS FOR PROTECTING CAPILLARY OF LASER FIBER DURING INSERTION AND REDUCING METAL CAP DEGRADATION - A method and an apparatus according to an embodiment of the invention includes disposing a cover about a capillary used in a side-firing optical fiber. The cover can be used to protect the capillary when being inserted through an endoscope for medical treatment. In some embodiments, the cover can be a low-profile cover such as a coating made of a light-sensitive polymer or like material. At least a portion of the coating can be removed after insertion by exposing the light-sensitive material to laser energy transmitted from an optical-fiber-core end housed within the capillary. In other embodiments, the cover can be a slideable or moveable low-profile sleeve or metal cover. During insertion, the sleeve or metal cover is positioned over the capillary. After insertion, the sleeve or metal cover is retracted to expose the area to be treated to side-fired laser energy transmitted from the capillary. | 01-21-2010 |
20100016846 | Restless Leg Syndrome Treatment - The present invention describes a method of treating restless leg syndrome by eliminating venous reflux in an underlying vein. The malfunctioning vein can be removed or ablated by inserting a catheter into the vein that transmits sufficient energy to coagulate or ablate the lining of the vein causing it to permanently close, eliminating the source of venous reflux and the symptom of restless leg syndrome. | 01-21-2010 |
20100022998 | ABNORMAL ELECTRICAL CONDUCTION BLOCKING APPARATUS USING PHOTODYNAMIC THERAPY (PDT) - There are provided an apparatus and a method for blocking abnormal conduction in the cardiac muscle using a photodynamic therapy or for treating arrhythmia. There is provided a catheter ablation apparatus for the treatment of arrhythmia using a photodynamic therapy, comprising a catheter leading a photoradiation unit to an abnormal electrical conduction site or a hyperexcitability occurring site in the cardiac muscle of a test subject in which a photosensitizer is present by administering the photosensitizer beforehand and which causes arrhythmia, means for generating a light ray with which the abnormal electrical conduction site or the hyperexcitability occurring site is irradiated, and means for transmitting the light ray to the abnormal electrical conduction site or the hyperexcitability occurring site, wherein the photosensitizer used is a water-soluble chlorine-based photosensitizer and the light ray used is a light ray having an excitation wavelength equal to that of the photosensitizer. | 01-28-2010 |
20100030203 | Restless Leg Syndrome Treatment - The present invention describes a method of treating restless leg syndrome by eliminating venous reflux in an underlying vein. The malfunctioning vein can be removed or ablated by inserting a catheter into the vein that transmits sufficient energy to coagulate or ablate the lining of the vein causing it to permanently close, eliminating the source of venous reflux and the symptom of restless leg syndrome. | 02-04-2010 |
20100042084 | LASER TREATMENT APPARATUS - A laser treatment apparatus is provided with a treatment probe, an observation probe, an image processing section, a lesion disappearance degree judgment section, and a CPU. The treatment probe and the observation probe are disposed in a catheter inserted into a blood vessel. The observation probe scans an inner wall of the blood vessel to obtain a tomographic image signal therefrom. The image processing section produces a tomographic image from the tomographic image signal. The lesion disappearance degree judgment section analyzes the tomographic image and judges whether or not a lesion exists. The CPU controls radiation of a laser beam from the treatment probe based on a judgment result of the lesion disappearance degree judgment section. | 02-18-2010 |
20100042085 | Endovenous Closure of Varicose Veins with Mid Infrared Laser - This invention is an improved method and device for treating varicose veins | 02-18-2010 |
20100049182 | FLUID MEDIA FOR BIO-SENSITIVE APPLICATIONS - Systems, methods, and apparatus for providing a fluid and reduced-toxicity optical media with optical analysis and therapeutic energy delivery. An aspect of the invention provides an aqueous solution of increased-salinity of between about 1% and 35%. An increasing salinity in accordance with the invention provides improved transmissive efficiency at many wavelengths and less toxicity than many existing systems and methods. A catheter having integrated fibers for probing or treating internal lumens or other tissues can include a liquid-inflatable balloon or flushing mechanism using the solution for displacing blood or other obstructions in an optical path between the fiber and targeted tissue. Methods including spectroscopy can be employed with the solution for diagnosing medical conditions associated with diseased vessels or other tissues while reducing the risk of permanent damage resulting from the diagnosis. Additional applications include the deliver of therapeutic radiation externally and internally to tissues through h the solution media. | 02-25-2010 |
20100063493 | LASER INSTRUMENT FOR VASCULAR OCCLUSION, IN PARTICULAR FOR INTRAVENOUS TREATMENT, AND FOR PERFORATION OR DETERSION OF TISSUE - An instrument comprises a light guide and a substantially rigid support for the light guide. In a version adapted for the treatment of varicose veins, the support is a needle serving as a sheath to a fibre optic. | 03-11-2010 |
20100069899 | KIT OF OPTICAL FIBERS FOR PERCUTANEOUS ABLATIVE TREATMENT - The kit of optical fibers for percutaneous ablative treatment, comprises at least two optical fibers ( | 03-18-2010 |
20100094266 | LASER ACTIVATED MICRO ACCELERATOR PLATFORM - A resonant laser powered micro accelerator platform capable of producing relativistic or near relativistic electrons and, optionally, x-rays. The apparatus has a pair of parallel slab-symmetric dielectric slabs that are separated by a narrow vacuum gap that is preferably tapered. The slabs have a top surface with reflective layers with many periodic slots creating longitudinal periodicity in the structure fields when laser light is directed on the reflectors in one embodiment. Electrons introduced into the gap are accelerated along the length of the slabs. The reflective surface of the slabs is preferably a laminate of alternating layers of high index and low index of refraction materials. | 04-15-2010 |
20100094267 | Confined Beam Laser Liposuction Handpiece - A cannula for a liposuction device includes a laser energy source for liquefying, emulsifying or softening fatty tissue at the cutting windows inside the distal tip end of the cannula. The energy source provides laser energy through an optical fiber positioned within said interior region of the cannula and extending though the cannula and having an end located at the distal tip end of the cannula adjacent the cutting windows. Fat is emulsified, liquefied or softened by the energy emitted into tissue at the cutting windows of the cannula and is removed by aspiration. In a confined laser beam power assisted embodiment, the openings in the cannula shear or cut neighboring fat tissue and the radiant energy at the cutting windows softens and/or emulsifies the tissue. | 04-15-2010 |
20100106146 | HAND-HELD PORTABLE LASER SURGICAL DEVICE - A hand-held, portable diode laser surgical device includes a power supply, at least one laser diode, integral control interface and display, and a multi-component sterile, disposable tip apparatus featuring assembly for alignment of a self-contained optical fiber to the surgical device, and releasably locking assembly between the tip apparatus and surgical device. An embodiment includes wireless foot pedal on/off control and a dock providing sterile, antiseptic recharging environment. | 04-29-2010 |
20100114081 | BIASING LASER CATHETER: MONORAIL DESIGN - In some embodiments, without limitation, the invention comprises a catheter having an elongated housing with a channel disposed therein. A laser delivery member is movable and at least partially disposed within the channel. A ramp is disposed within the housing at an angle to its central axis and proximate to its distal end. The ramp is adapted to move the distal end of the laser delivery member outwardly from the central axis of the housing. A guidewire biases the distal end of the laser delivery member generally inwardly toward the central axis of the housing. In some embodiments, without limitation, the offset of the central axis of the tip of the laser delivery member from the central axis of the housing is determined by adjusting the extent to which the laser delivery member travels on the ramp, and disposition of the laser delivery member on the guidewire maintains the offset tip substantially parallel to the central axis of the housing. Thus, in accordance with the invention, the distal end of the laser delivery member may be biased in a desired direction or offset, permitting ablation of an area larger than the area of the distal end of the catheter. | 05-06-2010 |
20100152721 | OPTICAL FIBER, OPTICAL FIBER DEVICE, AND OPTICAL FIBER BUNDLE - An optical fiber, an optical fiber device, and an optical fiber bundle, which are applied to an organic tubular tissue, for the medical application for removing a thrombus part deposited on an internal wall of tubular tissue are provided. | 06-17-2010 |
20100179525 | ENDOLUMINAL LASER ABLATION DEVICE AND METHOD FIR TREATING VEINS - An improved method and device is provided for safe and efficient low power density endoluminal treatment of venous insufficiency. One such device emits pulsed or continuous energy radially through an optical fiber end with a conical shaped tip for 360° radial emission. In some embodiments, a conical reflective surface is distally spaced opposite to and faces the emitting tip for enhancing radial emission efficiency by reflecting out any designed or remnant forwardly transmitted energy in radial directions. Other devices include flat emitting faces sealed within protective, radiation transparent covers. Additional embodiments include spacing/centering mechanisms to keep emitting end radially equidistant from vein walls. Laser radiation is transmitted at a wavelength and power such that is it substantially entirely absorbed within the blood vessel wall to sufficiently damage the intravascular endothelium and, in turn, achieve blood vessel closure. Because the energy is substantially entirely absorbed within the blood vessel wall, the need for a local anesthetic along the treatment area of the blood vessel may be substantially avoided. | 07-15-2010 |
20100217249 | METHOD AND DEVICES FOR COAGULATION OF TISSUE - Methods and devices described herein facilitate improved treatment of body organs. | 08-26-2010 |
20100234834 | Device for localized thermal ablation of biological tissues, particularly tumoral tissues or the like - Device for localized thermal ablation of lesion tissues, particularly tumoral tissues or the like, which device comprises: a probe or needle intended to be positioned with the end tip at the lesion tissue or tumoral tissue area to be removed; which probe or needle support at least a light guide as an elongated member like a thin wire or thread, one of the ends thereof is an end emitting heating electromagnetic energy and which light guide ends at said end of the probe or needle by a tip irradiating said electromagnetic energy, particularly as a laser light and the other end thereof is connected to a source generating the electromagnetic energy; means for controlling the activation/deactivation of the source generating the electromagnetic energy. Characterized in that in combination it comprises means for the controlled distribution of the heating action on the lesion tissue area generated by the electromagnetic energy emitted by the irradiating tip inside a volume having a predetermined size. The invention relates also to a method for localized thermal ablation. | 09-16-2010 |
20100241111 | Device for localized thermal ablation of biological tissues, particularly tumoral tissues or the like - Device for localized thermal ablation of lesion tissues, particularly tumoral tissues or the like, which device comprises: a probe or needle intended to be positioned with the end tip at the lesion tissue or tumoral tissue area to be removed; which probe or needle support at least a light guide as an elongated member like a thin wire or thread, one of the ends thereof is an end emitting heating electromagnetic energy and which light guide ends at said end of the probe or needle by a tip irradiating said electromagnetic energy, particularly as a laser light and the other end thereof is connected to a source generating the electromagnetic energy; means for controlling the activation/deactivation of the source generating the electromagnetic energy. Characterized in that in combination it comprises means for monitoring the heating action on the lesion tissue area generated by the electromagnetic energy emitted by the irradiating tip inside a volume having a predetermined size and operating on the basis of a transferring function of generated heat on a measuring sensor provided at a predetermined distance and position with respect to the source emitting the electromagnetic irradiation. | 09-23-2010 |
20100274235 | APPARATUS, METHOD AND COMPUTER PROGRAM FOR APPLYING ENERGY TO AN OBJECT - The present invention relates to an apparatus for applying energy to an object ( | 10-28-2010 |
20100280505 | Device for Localized Thermal Ablation of Biological Tissue, Particularly Tumoral Tissues or the Like - Device for localized thermal ablation of lesion tissues, particularly tumoral tissues or the like, which device comprises: a probe or needle intended to be positioned with the end tip at the lesion tissue or tumoral tissue area to be removed; which probe or needle support at least a light guide as an elongated member like a thin wire or thread, one of the ends thereof is an end emitting heating electromagnetic energy and which light guide ends at said end of the probe or needle by a tip irradiating said electromagnetic energy, particularly as a laser light and the other end thereof is connected to a source generating the electromagnetic energy; means for controlling the activation/deactivation of the source generating the electromagnetic energy. Characterized in that it comprises in combination means for controlled distribution of the heating action on the lesion tissue area generated by the electromagnetic energy emitted by the irradiating tip inside a volume having a predetermined size, which means are composed of a fluid or a mixture or a combination of heat storing and/or conveying fluids or substances there being provided means for distributing, conveying and/or containing said fluid or fluids or said substance or substances inside the area to be treated or for conveying or containing said fluid or fluids or said substance or substances outside the area to be treated. | 11-04-2010 |
20100280506 | METHOD AND APPARATUS FOR MEDICAL TREATMENT UTILIZING LASER IRRADIATION - According to at least one exemplary embodiment a method and apparatus for medical treatment utilizing laser irradiation is disclosed. The method may comprise generating an electromagnetic radiation pulse by a laser, directing the radiation to an area of the human body where treatment is desired; applying the radiation to the area of the human body; and inducing conformational changes in organic molecules having metal ions in their structure. | 11-04-2010 |
20100286675 | Surgical instrument - Provided is surgical instrument which can provide a field of view over surgical site by sucking blood from bleeding site during surgery on body tissue of patient and monitoring dark and deep surgical site, which operator cannot see with his or her naked eye, with small camera. The surgical instrument has substantially the same shape as a pair of scissors and includes first body, second body having shape symmetrical to that of the first body, hinge to which the first and second bodies cross and are rotatably coupled, and photographing unit provided in the hinge to photograph a surgical site between front ends of the first and second bodies. The photographing unit may include camera mounted in the hinge such that lens of the camera can be exposed through the center of the front surface of the hinge and configured to transmit photographed image data to monitor. | 11-11-2010 |
20100292681 | DEVICE FOR THE USE, ALSO SINGLE USE, OF AN OPTICAL FIBER FOR INVASIVE SURGICAL LASER TREATMENT IN THE HUMAN BODY - The device comprises a distal portion of rigid tube and a proximal portion of flexible tube connected to one another, in which the optical fiber is housed and fixed, the desired useful end of this fiber projecting from said portion of rigid tube; a manoeuvring tubular handpiece is fitted on said portion of rigid tube. | 11-18-2010 |
20100292682 | METHODS AND APPARATUS FOR PERFORMING INTERSTITIAL LASER THERAPY AND INTERSTITIAL BRACHYTHERAPY - A therapeutic energy system for performing interstitial laser therapy and brachytherapy includes two categories of components. The first category includes components usable to perform both interstitial laser therapy and brachytherapy. The second category of components includes components usable to perform either interstitial laser therapy or brachytherapy, but not both. The components co-act to apply therapeutic energy to tissue. The components of the first system include components inserted percutaneously into the tissue, such that interstitial laser therapy and brachytherapy can be performed sequentially without removing and re-inserting percutaneous components. Components of the second category include components not requiring additional puncturing of the skin of a patient, such that removing and inserting components of the second category from a patient is done easily and painlessly. An energy probe component does not maintain a cavity around the tumor mass. Surgical excision of tissue can be performed coincident to therapeutic energy treatment as disclosed. | 11-18-2010 |
20110004203 | Laser Device and Method for Decreasing the Size and/or Changing the Shape of Pelvic Tissues - Methods for decreasing the size and/or changing the shape of pelvic tissues. In one embodiment a cannula needle having a laser fiber disposed therein is used to delivery energy to the surrounding pelvic tissue. The cannula needle may be advanced into the pelvic tissue, such as the vagina, with the laser fiber in a retracted position and retained within the distal tip of the cannula needle for protection. Upon reaching the initial treatment zone, the laser fiber may be advanced or motivated into an extended position where the distal end of the laser fiber extends beyond the distal tip of the cannula. Laser energy may then be applied as the device is withdrawn from the patient. The application of such energy may be constant, intermittent, increasing, and/or decreasing as needed. The energy application may also be deactivated if a maximum activation time, maximum temperature, or maximum energy level is reached. | 01-06-2011 |
20110015621 | LASER DEVICE FOR MINIMALLY INVASIVE TREATMENT OF SOFT TISSUE - A method and device for thermal fat destruction and collagen contraction The method comprises delivering optical energy into the adipose tissue under the skin to create thermal damage of fat, with an alteration of the overlying soft tissue contour and heating of dermis to sub-necrotic temperature to cause skin tightening. The device comprises a treatment cannula and tip connected to the cannula and optimizing light distribution for effective energy use. | 01-20-2011 |
20110015622 | ENDOVASCULAR METHOD AND APPARATUS WITH FEEDBACK - An apparatus for delivering energy, and in particular laser energy, to a tissue is adapted to minimize or eliminate burn back caused by contact between the energy delivery apparatus and bodily fluids by (I) preventing the energy delivery apparatus from contacting bodily fluids or tissues that might burn or cause the apparatus to burn; and/or (ii) monitoring the apparatus to detect overheating in order to withdraw the apparatus or control the energy supply in case overheating is detected. The apparatus is applicable, by way of example, to treatment of blood vessels using endovascular techniques. | 01-20-2011 |
20110040296 | DRIVING DEVICE APPLICABLE TO A CONDUCTOR CABLE FOR INTRAVENOUS TREATMENTS - The invention relates to a device formed by tractor means for a conductor cable using fibre optics, direct current, RF current, ultrasound or any other type of energy used to obliterate a vein by means of the application of an energy that is absorbed by the wall of the vessel. The type of energy used may be light, electrical current, ultrasound or any other type of energy that produces this retraction effect, and the tractor means are controlled by electronic means that determine the forward/backward and halt magnitude of said fibre-optic cable inside the probe. In parallel, the fibre-optic cable is connected to an energy generator that generates laser, RF or any other energy appropriate to the case. | 02-17-2011 |
20110082452 | CARDIAC ABLATION SYSTEM WITH AUTOMATIC SAFETY SHUT-OFF FEATURE - A cardiac tissue ablation system according to one embodiment includes an elongate catheter configured to deliver a distal end thereof to a patient's heart and an expandable member formed at the distal portion of the catheter. The expandable member has an elastic portion configured to conform to the shape of a target tissue region upon expansion. The system further includes an energy emitter movably disposed within a lumen of the catheter. The energy emitter is configured to deliver radiant ablative energy to the target tissue region. The system further includes a controller that includes a safety shut-off feature for automatically shutting off power to the energy emitter when a prescribed event occurs resulting in power to the energy emitter being stopped. | 04-07-2011 |
20110118715 | METHODS AND APPARATUS RELATED TO A SIDE-FIRE ASSEMBLY THAT HAS AN OPTICAL GRATING - An apparatus may include an optical fiber having an angled grating aligned along a plane non-normal to a longitudinal axis of a distal end portion of the optical fiber. The angled grating may be configured to redirect a first laser energy propagated within the optical fiber and incident on the angled grating to a direction offset from the longitudinal axis. The apparatus may also include a metallic cap coupled to the optical fiber. The metallic cap may have an inner surface configured to redirect a second laser energy incident on the inner surface along the direction offset from the longitudinal axis. The second laser energy being different than the first laser energy. | 05-19-2011 |
20110130749 | METHOD OF ENDOVENOUS LASER TREATMENT OF VARICOSE VEINS - A method of endovenous laser is for treating varicose veins located at a depth below the surface of the skin by the application of laser energy to a selected target region or site. | 06-02-2011 |
20110160713 | TWISTER FIBER OPTIC SYSTEMS AND THEIR USE IN MEDICAL APPLICATIONS - An improved device and method for safe, accurate and efficient surgical procedures are disclosed. The disclosed device is an optical fiber set with an asymmetric distal end configuration, comprising a bent tip fiber with a fused sleeve as an integral part of it, placed at the fiber's distal (output) end and with a rotatable connector at the proximal (input) side. Fiber tip and tissue-contacting surface located at the distal end of the tip may be constructed with different shape configurations, such as convex tip to improve focusing characteristics, concave tip to achieve diverging irradiation or an expanded beam tip to achieve an effect similar to that obtained by electrosurgical tools. A grip guarantees and enhances the ability to twist and rotate it easily. In another preferred embodiment, twisting maneuvers are enhanced through a special configuration. Both special features (bent tip and rotatable connector), allow for improved and enhanced treatment of diverse pathologies, making possible to efficiently and easily reach and treat specific tissues. Optical fiber's steerability, twistability and rotation lead to a more precise and improved effect on tissues. Due to this, easier, faster and more precise and efficient treatments can be performed by its means. For instance, it may be inserted into a cystoscope to perforin high power ablation of prostatic tissue for BPH treatments, or steered into one of the prostatic lobes, which can be excavated from the inside in order to relieve pressure on the urethra while maintaining the urethra's integrity. Other uses might be the removal of tumorous, hyperplasic or other unwanted tissue in the body. Optical fiber set disclosed can be used with laser sources of various wavelengths, including dual laser sources, but also higher power LED devices or very bright light sources can be used to generate the radiation to be transmitted as well. Due to this novel design, described fiber is easy to put in place, also easy to maintain in contact with tissue and highly durable. The feel to the doctor is greatly improved too. This results in more effective power transfer into tissue and therefore procedures are more reliable and procedure times are cut by up to 30%. | 06-30-2011 |
20110166561 | Method for Treatment of Varicocele - A minimally invasive method for treating varices in especially sensitive areas, including pelvic varices in females, varicoceles, and also oesophageal varices is presented. The method comprises the steps of making a micro incision into the blood vessels of a patient, endoscopically inserting a catheter device into the blood vessel of a patient and advancing the distal end of the catheter to reach the varix or varices. For treatment of male varicocele, insertion is preferably made directly at the testicle. Alternatively, insertion can be made in the femoral vein and advanced using a catheter. Preferably, x-ray, angiography, or other imaging techniques are used to visualize and position the catheter. An optical fiber is then inserted into the catheter and the distal end is advanced to a predetermined point near the varix or varices. Optical fiber distal end is preferably a slim, radial 360 degree emitting fiber end. Laser energy of preferably 1470±30 nm is then transmitted to the varix to close the blood vessel. Other wavelengths with similar or greater absorption in blood/water than at 1470 nm are also effective. Imaging techniques such as angiographies may again be performed to confirm closure of the vein. | 07-07-2011 |
20110172652 | METHOD AND DEVICE FOR UNDERSKIN RADIATION TREATMENT OF ADIPOSE TISSUE - A method and device for underskin treatment and removal of adipose tissue by means of a radiation energy source is disclosed. The method disclosed of radiation-assisted tissue improvement consists of inserting a device or part of a device below the skin into areas to be treated, emitting radiation and moving the device within tissue area to reach all parts. The method is characterized by emitting radiation at intensity levels low enough to practically avoid or minimize carbonization in the main tissue components such as fat and connective tissue but at sufficient intensity to enable coagulation of smaller blood vessels thus preventing from bleeding at the spectrum emitted. Thus, in preferred embodiments, power density is kept at up to about 2 W/mm. This allows for use of small diameter fibers such as 400 μm or less. The device for carrying out underskin radiation treatment consists of a handpiece that allows easy manipulation by physicians, with a part that can be inserted below the skin and a part that can be held and manipulated outside the body. The part inserted below the skin can be vibrated or oscillated by means of suitable transducers to aid in distributing the radiation. Simultaneously or immediately afterwards, liquefied tissue is aspirated. If convenient, fluid irrigation of the area to be treated can be done. In a preferred embodiment, handpiece consists in a hollow cannula incorporating at least one channel for suction and/or irrigation and a light guiding means in its body/wall section for the purpose of the treatment and liquefaction of adipose tissue. Due to handpiece's special configuration, a wide variety of fiber tip configurations can be used, i.e. side emitting, conical, radial emitting, drop shaped, reflective caps, but not limited thereto. Each fiber tip configuration allows for optimally performing different specific treatments. The device further comprises at least one radiation source, included in device part affixed to the handpiece either in a permanent or detachable manner. | 07-14-2011 |
20110172653 | METHODS, SYSTEMS AND DEVICES FOR OPTICAL STIMULATION OF TARGET CELLS USING AN OPTICAL TRANSMISSION ELEMENT - Stimulation of target cells using light, e.g., in vivo, is implemented using a variety of methods and devices. In one such device, target cells are stimulated using an implantable device. The device includes a light source for producing light from electrical power. An optical transmission element is made from a material that is substantially transparent to the light from the light source. This transmission element substantially encases the light source at a proximal end. The transmission element delivers light from the light source to a distal end. The shape and size of the transmission element facilitates implanting of the element within a patient. A fixation portion physically couples to the optical transmission element and secures the device to the patient. A heat dissipation portion removes heat from the near optical transmission element and the light source and dissipates the removed heat through the fixation portion. | 07-14-2011 |
20110178513 | METHOD AND DEVICE FOR INTERNAL TISSUE REMOVAL - Methods and devices for internal tissue removal by means of laser energy are provided. In a preferred embodiment, a method for internal tissue removal in which tissue is removed in the form of fluid (liquid, vapor), solid debris and/or a combination of these is provided. Other embodiments disclose a method and a photodynamic method for the treatment of urological disorders such as benign prostatic hyperplasia. In another embodiment, a treatment system comprises infusion and vacuum hoses, a laser energy source with a wavelength or wavelength combinations for higher tissue ablation rates as well as reduced bleeding. As an advantageous feature, this invention can be applied to any kind of soft tissue which needs to be removed from the body. In addition, as it is not limited to hollow organs, it can be performed with or without using an endoscope. The method of internal tissue removal disclosed is safe, efficient, with enhanced outcomes and can be performed with less patient and surgeon stress. | 07-21-2011 |
20110190748 | LAPAROSCOPE FOR LOW LASER LEVEL IRRADIATION - A device is provided for illuminating a tissue surface to be treated. The device includes a catheter, a light emitter to emit light from the distal end of the catheter, and a distal cap disposed over the distal end of the catheter. The device includes a handle connected to the proximal end of the catheter. The light emitter can include a light guide extending through an interior channel of the catheter, and an external source of light operatively connected to the light guide. The light emitter can include a light emitting diode in the handle, or the light emitter can include a light emitting diode in the distal end of the catheter. | 08-04-2011 |
20110196356 | ABLATIVE/COAGULATIVE UROLOGICAL TREATMENT DEVICE AND METHOD - A device/system and a method of treating enlarged prostate and other urologic abnormalities are presented. A combined treatment is performed with several interstitial coagulating probes and an ablating fiber. Tissue vaporization is minimized by the denaturalizing effect of interstitial coagulative fibers. In a single device, multiple delivery systems achieve optimal tissue ablation/coagulation; a non-laser source like microwave energy coagulates tissue and a laser source ablates tissue. Another device comprises two or more laser sources with adjustable wavelengths controllable by physician as to ablative, coagulative, and tissue penetration needs. Continuous, semi-continuous, pulsed wave, or combinations are useful. In another embodiment, optical fiber has a central core for transmitting laser radiation, and a cladding layer about the core that may further transmit other laser radiation of a different or a same wavelength as the core. Fibers may have a side-firing distal end, a radial firing end, or an off-axis firing end. Feedback controls can be used. In general coagulative irradiation can use a radiofrequency or other radiant thermal source. | 08-11-2011 |
20110196357 | Fiber Embedded Hollow Needle For Percutaneous Delivery of Laser Energy - An apparatus facilitating percutaneous delivery of laser energy includes: a hollow needle having a cutting edge at an insertion end thereof; and a laser fiber fixedly embedded within the hollow needle, the embedded laser fiber within the needle being permanently fixed within the hollow needle as one non detachable unit. | 08-11-2011 |
20110202047 | Apparatus for Treating Venous Insufficiency Using Directionally Applied Energy - A catheter introduces electrodes in a vein for a minimally invasive treatment of venous insufficiency by the application of energy to cause selective heating of the vein. The catheter is positioned within the vein to be treated, and the electrodes on the catheter are moved toward one side of the vein. RF energy is applied in a directional manner from the electrodes at the working end of the catheter to cause localized heating and corresponding shrinkage of the adjacent venous tissue, which may include commissures, leaflets and ostia. Fluoroscopy or ultrasound may be used to detect shrinkage of the vein. After treating one section of the vein, the catheter can be repositioned to place the electrodes to treat different sections of the vein until all desired venous valves are repaired and rendered functionally competent. | 08-18-2011 |
20110218525 | Preparation For Endovenous Laser Ablation - Improved systems and methods for removing blood from a blood vessel in preparation for endovenous laser ablation are described. The improved methods include one or more of: placing the patient in the Trendelenburg position, applying external compression around the vein, massaging the vein, cooling the vein externally, encouraging spasming of the vein, and removing blood with a suction device. | 09-08-2011 |
20110224660 | Diode Laser Induced Vapor/Plasma Mediated Medical Procedures and Device - An improved method and device for safe and efficient medical applications is provided. In a preferred embodiment, based on using the inherent benefits of laser diodes (such as efficient power generation from a reliable and compact solid state device), plasmas and high energy vapors are produced for medical applications with power levels and power densities sufficient to treat medical indications and avoid the creation of extensive damage zones. Transmissions means in different configurations are used to achieve a high power density, which is able to initiate plasma and high-energy vapor at the tip. Once a sparkless plasma and high energy vapor bubbles are formed, it is often found that it will also absorb other wavelengths in addition to the one that initiated it. As a consequence, other wavelengths more efficiently generated by diodes or diode pumped lasers may be added into the beam in order to improve treatment efficiency. For example, the 1470 nm wavelength can be used to produces sparkler-less plasma bubbles, together with the 980 nm wavelength to produce tissue vaporization and an excellent haemostasis effect. Once plasma and or high-energy vapors are in place, radiation from this zone determine tissue effects. In another embodiment, high peak power pulsed radiation is used. Wavelengths of 1470 nm, 1940 nm, or 1550 nm are preferred. Additionally it can be applied in combination with another wavelength with medium absorption in water such as 980 nm. In another embodiment a concentric double core fiber is used, in which the ignition radiation is guided in near single mode, inner core and the radiation used to maintain and enhance the pulse is guided into the surrounding second outer core. | 09-15-2011 |
20110230872 | Lateral Laser Fiber for High Average Power and Peak Pulse Energy - An improved optical fiber comprising a waveguide with an input for coupling focused laser energy into the waveguide and communicating electromagnetic radiation in a propagation direction to an internally reflective tip of the waveguide, a tissue contacting surface wherein the light path from the reflecting surface to the transmitting surface in substantially homogenous in refractive index and cooled by fluid flow. In minimizing the variations in refractive index within the lateral light path, while providing active cooling directly below the tissue contact surface, the invention prevents internal reflections and beam distortion and greatly improves the efficiency and durability of the laterally directing probe. Free rotation of the tissue contact surface, about the lateral tip, may be provided and tissue vaporization efficiency may be improved by providing a morcellating tool on the tissue contact surface. | 09-22-2011 |
20110245820 | APPARATUS FOR ENHANCING BRIGHTNESS OF A WAVELENGTH CONVERTING ELEMENT - Disclosed is an exemplary illumination device for enhancing the brightness of wavelength converting element. The illumination device includes a wavelength converting element operable for receiving light from a light source at a first wavelength range and converting the light to a second wavelength range. The wavelength converting element includes a first face, a second face opposite the first face, and a side edge extending between the first and second faces. A reflective optical element is arranged adjacent the side edge of the wave converting element. The reflective optical element is configured to reflect light in at least the first wavelength range toward the wavelength converting element. | 10-06-2011 |
20110257641 | PHOTOTHERAPY FOR RENAL DENERVATION - Apparatuses and methods facilitate delivery of optical or photoacoustic energy to innervated vascular that contributes to renal sympathetic nerve activity. The optical energy delivered may be of sufficient power to scan or image innervated renal or aortal tissue. The optical energy delivered may be of sufficient power to ablate innervated renal or aortal tissue, such as by thermal laser ablation or photoacoustic laser ablation. A catheter for intravascular or extravascular deployment supports an optical fiber arrangement comprising a coupling for receiving light from a laser light source. An optics arrangement is supported by the catheter and coupled to the optical fiber arrangement. The optics arrangement includes one or more optical elements arranged to receive the laser light and direct optical energy to target innervated tissue or a water source from which a cavitation bubble may be created and launched for acoustically shocking the target innervated tissue. | 10-20-2011 |
20110282334 | DEVICE AND METHOD FOR FISTULA TREATMENT - A device and method for fistula treatment are disclosed comprising a laser source, a fiber optics system and an online monitoring system. An optical fiber, radiating from its distal end in an essentially radial pattern, is inserted utilizing suitable tools for imaging, placement and insertion. Radiation is delivered until shrinkage and closure are observed and fiber optic device is removed after a few minutes. Preferred wavelengths are 980±30 nm, 1320±50 nm, 1470±60 nm and 2000±50 nm applied alone or in combination. In another embodiment, the disclosed procedure is used as a complement of conventional techniques such as fistula plugs or placement of mucosa flaps to enhance results. In another preferred embodiment, the inner layer of the tract is saturated with light sensitive substances, such as photosensitizers. Thus, homogeneous irradiation of the surface using a suitable light distributor and light/laser source causes a depth limited necrosis of the relevant tissue. Present method and device can be used successfully to treat high fistulas with less pain than fistulotomy and without risk of bowel incontinence. Procedure requires short hospitalization stays. | 11-17-2011 |
20110301584 | LASER TISSUE ABLATION SYSTEM - Embodiments of the invention are directed to a laser ablation system. In one embodiment, the laser ablation system comprises a shaft, a balloon, a laser fiber and a viewing fiber. The shaft has a proximal end and a distal end. The balloon is attached to the distal end of the shaft, a portion of which is within the balloon. The laser fiber has a distal end comprising a light dispenser that is configured to deliver laser light through the balloon. The viewing fiber is configured to image an interior balloon. In accordance with another embodiment, the laser ablation system comprises a shaft, a balloon and a laser fiber. The shaft has a proximal end and a distal end. The balloon is attached to the distal end of the shaft, which is within the balloon. The balloon includes an inflated state, in which the balloon is shaped to conform to a cavity of a patient. The laser fiber has a distal end comprising light dispenser that is configured to deliver laser light through the balloon. | 12-08-2011 |
20110306956 | LASER-BASED METHOD AND SYSTEM FOR SELECTIVELY PROCESSING TARGET TISSUE MATERIAL IN A PATIENT AND OPTICAL CATHETER ASSEMBLY FOR USE THEREIN - A laser-based method and system for selectively processing target tissue material in a patient and optical catheter assembly for use therein are provided. The system includes a laser subsystem for generating an output laser beam. The system further includes a catheter assembly including at least one optical fiber having a proximal end coupled to the laser subsystem for guiding the output laser beam along a propagation path. The beam has optical and temporal properties and a predetermined selected wavelength. The catheter assembly is sized to extend through an opening in a first part of the patient and to a tissue material processing site within the patient. The catheter assembly includes a beam delivery and focusing subsystem which has an adjustable focal distance and disposed in the propagation path and that accepts the output laser beam and adjustably positions the beam into at least one focused spot on the target tissue material disposed within a second part of the patient at the site based on distance to the target tissue material from a predetermined point on the propagation path at the site for a duration sufficient to allow laser energy to be absorbed by the target tissue material and converted to heat to produce a desired physical change in the target tissue material without causing undesirable changes to adjacent non-target material disposed within the second part of the patient. The target tissue material is characterized by an absorptive coefficient. The predetermined wavelength is selected to achieve a penetration depth into the second part of the patient of approximately one millimeter or more. | 12-15-2011 |
20120016354 | DEVICE, APPARATUS, AND METHOD OF ADIPOSE TISSUE TREATMENT - An improved procedure for performing liposuction is obtained by utilizing a needle that includes a laser source conductor with one end of the needle being configured for insertion into a target adipose skin volume and the other end being coupled to a laser source. The needle may include one or more channels for extracting the treated adipose area. A vacuum source can be used in the extraction of the treated adipose. Further, the first end of the needle may include a cap or end-piece that reduces the build up of carbon deposits. A temperature sensor may be used as input to adjust the laser power and prevent over exposure. | 01-19-2012 |
20120022512 | DEVICE, APPARATUS, AND METHOD OF ADIPOSE TISSUE TREATMENT - A method and apparatus for adipose tissue treatment whereby two types of electromagnetic radiation are applied to the volume of tissue to be treated, One type of the electromagnetic radiations being RF and the second type of electromagnetic radiation being visible or infrared radiation. | 01-26-2012 |
20120071867 | DIODE LASER SYSTEMS AND METHODS FOR ENDOSCOPIC TREATMENT OF TISSUE - Embodiments of the present invention provide improved laser systems and methods for endoscopic laser treatment of abnormal tissue such as abnormal mucosal tissue, for example esophageal dysplasia that is also referred to as Barrett's esophagus (BE). The systems and methods described here can also be used in many applications where treatment of shallow surface layers with minimal damage to the tissue beneath is desirable, for example BE tissue comprising hemoglobin. In many embodiments, the system is configured to emit light energy having an optical wavelength to treat tissue having oxygenated hemoglobin. | 03-22-2012 |
20120089135 | LASER GENERATOR FOR DEEP TISSUE LASER TREATMENTS USING LOW INTENSITY LASER THERAPY CAUSING SELECTIVE DESTRUCTION OF NOCICEPTIVE NERVES - A laser generator for laser therapy in the treatment of pain conditions by selective destruction of nociceptive or pain nerves, wherein a laser generator that generates a continuous and pulsed laser wavelength between 690 nm to 980 nm that is transmitted fiberoptically through a laser fiber within a spinal needle to contact areas within a body where pain nerves require destruction through optimal absorption of laser energy by pain nerves without affecting other types of nerves or surrounding tissues. | 04-12-2012 |
20120116375 | Treatment of Cellulite and Adipose Tissue with Mid-Infrared Radiation - An apparatus that will alter the fibrous strands in the fatty layers of the skin to reduce the appearance of cellulite and adipose tissue. Electromagnetic energy is used to selectively shrink or alternatively photoacoustically ablate the collagen in the constricting bands of connective tissue that causes the dimpled appearance of cellulite and adipose tissue while avoiding damage to the surrounding fatty cells. | 05-10-2012 |
20120157978 | TUNICA ABLATION - In a method of ablating a tunica of a patient, a laser fiber is inserted into the tunica of the patient. Portions of the tunica are exposed to laser light discharged from the laser fiber. The portions of the tunica that are exposed to the laser light are ablated. In one embodiment, a device is used to control the exposure of the tunica to the laser light. In one embodiment, a penile prosthesis is implanted in the ablated tunica. | 06-21-2012 |
20120157979 | LASER ASSEMBLY HAVING ADJUSTABLE FOCUSING LENSES - Embodiments of the disclosure may include an apparatus including an optical fiber having a distal end and configured to emit a beam of energy. The apparatus may also include a first lens coupled to the distal end of the optical fiber and a sheath including a channel and a second lens positioned on a distal region of the sheath. The optical fiber may be disposed within the channel of the sheath to permit relative movement between the first lens and the second lens and thereby adjust a beam of energy that exits the sheath. | 06-21-2012 |
20120157980 | MEDICAL SUCTION DEVICE - A medical device for fragmenting objects and aspirating remaining debris enables a physician or other medical personnel quickly and easily remove objects, such as kidney stones, from a patient. The medical device can include a dual-lumen elongated member and a handle coupled to the elongated member. A first one of the lumens provides a suction passageway, and a second one of the lumens receives a laser fiber for delivering laser energy to an object, such as a kidney stone, within the patient. The handle can include a positioning mechanism to enable the physician by manual manipulation to move and hold in place the laser fiber longitudinally within the second lumen. | 06-21-2012 |
20120157981 | ABLATION DEVICE - An ablation device comprises a balloon having an open proximal end and a closed distal end. A cylindrical tube extends into the balloon through the proximal end. An end support member is positioned at the distal end of the balloon. The end support member comprises a cylindrical portion facing the proximal end of the balloon. The cylindrical portion is received within a bore at the distal end of the tube. A seal is formed between the proximal end of the balloon and the cylindrical tube. | 06-21-2012 |
20120232541 | Multiple Sclerosis Therapeutic Methods Using Therapeutic Ablation Devices and Systems - Methods and devices are disclosed that, in various embodiments and permutations and combinations of inventions, diagnose and treat Pulmonary Embolism or associated symptoms. In one series of embodiments, the invention consists of methods and devices for identifying patients whose Pulmonary Embolism or associated symptoms are caused or exacerbated, at least in part, by blockages of one or more of the patient's internal pulmonary veins. In some instances, stenoses or other flow limiting structures or lesions in the patient's affected veins are identified. Further, in some instances the nature of such lesions and whether there is a significant disruption of blood pressure, or both, is ascertained. In some embodiments, methods and devices for applying one or more therapies to the blockages in the patient's pulmonary veins are provided. | 09-13-2012 |
20120253335 | SYSTEM, METHOD AND APPARATUS FOR PERFORMINGSURGERY USING HIGH POWER LIGHT ENERGY - A system, method, and apparatus for performing surgery within the epidural space of a patient includes at least two high-power light generators (e.g. 1 to 25 watts each for example). The light energy from the high-power light generators is directed into a first end of one or more fiber optics and the second end of the fiber optics are maneuvered within the epidural space of the patient. When the second end of the fiber optics is aimed at unwanted tissue of a first type, the appropriate high-power light generator is operated to vaporize that tissue. When the second end of the fiber optics is aimed at unwanted tissue of a second type, the appropriate high-power light generator is operated to vaporize that tissue. | 10-04-2012 |
20120265184 | OPTICAL FEEDBACK RF ABLATOR AND ABLATOR TIP - An ablation catheter comprises an elongated catheter body; at least one ablation element disposed in a distal portion which is adjacent the distal end of the catheter body; an illumination optical element disposed in the distal portion, the illumination optical element being light-transmissive to emit light from the illumination optical element to the targeted tissue region; and a collection optical element disposed in the distal portion, the collection optical element being light-transmissive to collect one or more of returned, backscattered or newly excited light from the targeted tissue region. The illumination or excitation optical element and the collection optical element are axially spaced from one another and axially optically isolated from one another within the distal portion to substantially prevent light from traveling between the illumination optical element and the collection optical element along a path within the distal portion. | 10-18-2012 |
20120265185 | Expandable Laser Catheter - Expandable laser catheters for utilizing laser energy to remove obstructions from body passages are described. The laser catheter includes a shaftway having a distal end including a flexible portion configured in a series of radial folds. Multiple optical fibers, configured to transmit laser energy, extend along the shaftway and are attached to the flexible portion. An inflatable, ring-shaped balloon is attached to the catheter within the flexible portion. In use, the catheter is inserted into a body passage such as an artery, and advanced until the distal end is adjacent to an obstruction. The balloon is inflated to expand the flexible portion and to bring the optical fibers nearer the inner wall of the body passage. Laser energy is directed by the optical fibers toward targeted regions of the obstruction. As the catheter is advanced and the process repeated, as described herein. | 10-18-2012 |
20120289950 | DEVICE AND METHOD FOR VESSEL TREATMENT - An endoluminal lasing system for treating vascular disorders is disclosed. Treatment comprises an elongated member that conveys laser radiation to tissue and a motorized mechanism, through which elongated member is rotated. As motor drives, its movement s spins elongated member leading to a spiral movement as physician manually moves member in a longitudinal direction. In a preferred embodiment, elongated member is an optical fiber for endoluminal vessel treatment. In another preferred embodiment optical fiber comprises an off-axis firing distal end or side-firing distal end. Optical fiber can be a radial emitting fiber. Spin velocity can be varied according to treatment needs, i.e., pathology, type of vessel, energy source, vessel diameter, etc. One advantage, spiral movement prevents adherence to vessel wall in treatments. Another advantage is that radiation is applied more uniformly along vessel wall. The vessel wall is, thus more evenly treated under most conditions. Treatment velocity and reproducibility are enhanced with this procedure, and human errors are minimized. | 11-15-2012 |
20120316546 | Device and Method for Endovascular Treatment for Causing Closure of a Blood Vessel - An endovascular treatment method for causing closure of a blood vessel is provided. The method includes inserting into a blood vessel an optical fiber having a core through which a laser light travels and a spacer sleeve arranged around a distal portion of the core. A distal end of the core defines an enlarged light emitting face, which advantageously provides substantially lower power density while providing the same amount of total energy during a treatment session. After the insertion, laser light is applied through the light emitting face while the inserted optical fiber and spacer sleeve are longitudinally moved. The spacer sleeve positions the light emitting face away from an inner wall of the blood vessel and application of the laser light causes closure of the blood vessel. | 12-13-2012 |
20120316547 | Treatment of Cellulite and Adipose Tissue with Mid-Infrared Radiation - A method and apparatus that will alter the fibrous strands in the fatty layers of the skin to reduce the appearance of cellulite and adipose tissue. Electromagnetic energy is used to selectively shrink or alternatively photoacoustically ablate the collagen in the constricting bands of connective tissue that causes the dimpled appearance of cellulite and adipose tissue while avoiding damage to the surrounding fatty cells. | 12-13-2012 |
20120316548 | Treatment of Cellulite and Adipose Tissue with Mid-Infrared Radiation - A method and apparatus that will alter the fibrous strands in the fatty layers of the skin to reduce the appearance of cellulite and adipose tissue. Electromagnetic energy is used to selectively shrink or alternatively photoacoustically ablate the collagen in the constricting bands of connective tissue that causes the dimpled appearance of cellulite and adipose tissue while avoiding damage to the surrounding fatty cells. | 12-13-2012 |
20120323230 | LASER FUSION OF TISSUE LAYERS - A laser tissue fusion device is optimized for particular surgical applications to join tissue layers. The device has two opposed arms that engage and disengage to clamp and release layers of tissue therebetween. The distal end of the first arm is disposed opposite the distal end of the second arm. A laser energy source generates therapeutic laser energy is either integrated within the device is a separate unit. An energy pathway transmits the laser energy to the distal end of the first arm to deliver the laser energy to tissue layers clamped between the distal ends of the arms. An actuator decreases the separation distance between the distal ends of the arms to clamp the tissue layers. A switch activates the laser energy source upon engagement. The laser energy source delivers a burst of energy at a predetermined wavelength for a predetermined period of time sufficient to spot-weld the tissue. | 12-20-2012 |
20120330293 | CATHETER FOR PERFORMING PHOTODYNAMIC ABLATION OF CARDIAC MUSCLE TISSUE VIA PHOTOCHEMICAL REACTION - This invention provides a catheter used for blocking abnormal conduction in the cardiac muscle using photodynamic therapy or treating arrhythmia and a method for evaluating the therapeutic effects of the catheter. The catheter has a structure that freely bends at its end, which is used for performing photodynamic ablation of cardiac muscle tissue via photochemical reactions in the blood vessel or cardiac lumen. The catheter comprises a light-emitting window for applying a light beam transmitted through an optical fiber to a target site of cardiac muscle tissue and at least two electrodes for potential measurement in the periphery of the light-emitting window. | 12-27-2012 |
20130006229 | Endovascular Plasma Treatment Device and Method of Use - A device and method for treating a hollow anatomical structure using matter in a plasma state. Device includes a tubular delivery device comprising a tubular body, a hub, and a distal end, wherein the tubular body device having a longitudinal fluid delivery channel and an exit port near the distal end. Device also contains a container having pre-plasma matter being operatively coupled to the hub, at least one energy-emitting element operatively coupled near the distal end of the tubular delivery device. The energy-emitting element is operatively connected to energy source. | 01-03-2013 |
20130041357 | CLASS 1 LASER TREATMENT SYSTEM - Eye-safe, low-power-density, Class 1 or Class 3R laser treatment systems for medical applications are disclosed. Systems having controlled power and stray irradiation can meet laser safety requirements according to IEC 60825-1:2007 or equivalent for eye-safe rating; classification as laser-Class 1 or as laser-Class 3R. Laser system comprises a diode laser source, an optical fiber probe, means for detecting and identifying said optical probe and means to ensure that laser power transmitted from the fiber probe is limited to pre-specified maximum power level per application; laser wavelength; emission characteristics; probe characteristics; limiting values according to applied safety regulations. Device can identify the connected optical fiber probe to exclude using non-conforming optical fiber probes and/or to limit maximum output to optical powers in compliance with laser safety regulations. System preferably operates at a wavelength of 1400 nm or higher. Breakage or leakage from fiber probe is detectable and prevented. | 02-14-2013 |
20130046293 | SYSTEM FOR PREVENTING BLOOD CHARRING AT LASER BEAM EMITTING SITE OF LASER CATHETER - This invention provides a method and a system for preventing charring at a laser beam emitting site during treatment or diagnosis using a laser catheter for applying a laser beam. The method is intended to control laser beam irradiation of an apparatus equipped with a laser catheter comprising a laser beam transmission means and a laser beam emitting site used for diagnosis or treatment with the irradiation of the inside of a blood vessel or heart cavity with a laser beam. The method for controlling laser beam irradiation is intended to prevent blood charring at a laser emission site of an apparatus equipped with a laser catheter, and the method comprises a step of controlling a laser beam output in accordance with temporal changes in the intensity of the diffuse reflected light beam by erythrocytes applied to the inside of a blood vessel or heart cavity. | 02-21-2013 |
20130053838 | INTERVENTIONAL RADIOLOGIC DEVICES AND METHODS FOR EMBEDDED FILTER REMOVAL - An interventional radiologic device for removal of an embedded filter is provided. The device distinguishes a laser sheath with optical fibers for applying ablation energy to tissue. A removable introducer is movable within the lumen of the laser sheath and has at least two open channels to run wires. One or more sheath detachable modular adapters are used for providing ablation energy, force sensing and/or preventing bleeding. The distal open end of the laser sheath is preferably beveled with an angle up to 45 degrees. In one aspect, the introducer has a bulb-like tip, which fits against the distal end the laser sheath, yet can still be removed from the laser sheath via its proximal end. This device can be inserted over two wires simultaneously thereby allowing insertion over a wire loop configuration used to engage the apex of embedded IVC filters. | 02-28-2013 |
20130066308 | ABLATION-BASED THERAPY FOR BLADDER PATHOLOGIES - An ablation balloon to be used for bladder diseases. The balloon is uniformly or selectively covered with physical mechanisms capable of treating various bladder pathologies such as electrodes, insulation material, material capable of local release of fluid; or material capable of protecting selected regions of the bladder; and sensors capable of sensing (when balloon surface is in contact with bladder wall, temperature, impedance, pressure; or any combination thereof); or any combination thereof | 03-14-2013 |
20130123768 | LASER-ASSISTED GUIDEWIRE HAVING A VARIABLE STIFFNESS SHAFT - Embodiments of the present invention comprise a fiber optic guidewire having a hypotube with a plurality of openings that provide variable stiffness and tracking characteristics between at least one proximal segment and one distal segment of the guidewire. In some embodiments, the guidewire further comprises a mandrel disposed within the hypotube, the mandrel cooperating with the optical fibers to permit the distal end of the hypotube to be shaped as desired by a user. Methods of manufacturing and using the guidewire are also disclosed. | 05-16-2013 |
20130131657 | APPARATUS FOR MEDICAL TREATMENT OF TISSUE BY MEANS OF LASER LIGHT - An apparatus for medical treatment by means of laser light includes an optical conducting fiber which has a curved light emission end and includes a core, a cladding arranged above the core for conducting laser light coupled into the optical conducting fiber, and capillaries arranged in the cladding, wherein the capillaries run in a longitudinal direction of the optical conducting fiber at a radial distance from a longitudinal axis of the optical conducting fiber and form a capillary ring when viewed in cross-section, wherein the capillaries have cavities which are separated by bridges which have a width which is smaller than a wavelength of the laser light, wherein the laser light emerges from a forward surface of the light emission end and is transmitted in a direction which runs transverse to a substantially straight longitudinal section located directly in front of a curvature which defines the curved light emission end. | 05-23-2013 |
20130131658 | Treatment of Cellulite and Adipose Tissue with Mid-Infrared Radiation - A handpiece and method of use for laser-assisted liposuction for melting, disrupting, and removing cellulite and adipose tissue. Electromagnetic energy is used to selectively melt or disrupt cellulite and adipose tissue and ablate the collagen in the constricting bands of connective tissue that causes the dimpled appearance of cellulite and adipose tissue, while avoiding damage to the surrounding fatty cells. | 05-23-2013 |
20130158532 | LASER CATHETER FOR BYPASS SURGERY - The invention concerns an assembly for by-pass surgery. The assembly comprises a laser catheter. The laser catheter comprises: a tubular arrangement of optical fibres having distal ends defining a ring-shaped emitting surface arranged for emitting a tubular bundle of laser beams in a distal direction of the catheter; and a gripper for gripping tissue inside the tubular bundle of laser beams, having a gripping end defining the location where gripped tissue is held, the gripping end being arranged inside the tubular bundle and proximally from the emitting surface. The distance between the emitting surface and the gripping end is at least 1 mm. | 06-20-2013 |
20130218146 | Endovenous Laser Treatment Generating Reduced Blood Coagulation - Inducing thrombolysis of thermally induced thrombus occurring during endovenous ablation of varicose veins by introducing an optical fiber laser deliver device with optical fiber portion and with an energy emitting tip at its distal end into the varicosed vein to be treated, emitting pulsed, laser energy with sufficient energy to close and destroy varicose veins to the emitting tip of the optical fiber laser delivery device, thereby inducing laser thrombolysis of coagulated blood which accumulates at the energy emitting tip of the fiber when the fiber is caused to emit energy in the presence of uncoagulated blood and minimizing adverse effects associated with thermally induced thrombus within a varicose vein. | 08-22-2013 |
20130226163 | Ablation Techniques for the Treatment of Atrial Fibrillation - A catheter device provides a balloon structure and a side-firing laser lumen within the balloon to create lesions in the pulmonary vein (PV) in the treatment of atrial fibrillation. Mounted on the balloon so as to contact the PV when the balloon is inflated are one or more electrodes which may be used in a measurement mode, a treatment mode, or both. | 08-29-2013 |
20130237974 | CATHETER APPARATUS AND METHOD - In some examples, a catheter apparatus, configured to cut through a vessel wall, includes an elongate body including a distal end. A cutting device, configured to selectively cut a hole in the vessel wall, is disposed at the distal end of the elongate body. The cutting device includes a substantially ring-shaped cutting portion including a first dimension and a second dimension, wherein the first dimension is greater than the second dimension. The gripping device, disposed at the distal end of the elongate body, is configured to grip the vessel wall to maintain the cutting device proximate the vessel wall during cutting of the hole in the vessel wall. The gripping device is further configured to retain a portion of the vessel wall removed during cutting of the vessel wall. In some examples, a method includes using a catheter apparatus to cut through a vessel wall. | 09-12-2013 |
20130237975 | TUNICA ABLATION - In a method of ablating a tunica of a patient, a laser fiber is inserted into the tunica of the patient. Portions of the tunica are exposed to laser light discharged from the laser fiber. The portions of the tunica that are exposed to the laser light are ablated. In one embodiment, a device is used to control the exposure of the tunica to the laser light. In one embodiment, a penile prosthesis is implanted in the ablated tunica. | 09-12-2013 |
20130261614 | Method of Treating a Blood Vessel with an Optical Fiber Having a Spacer - An endovascular laser treatment device designed to be used with an optical fiber to treat venous diseases such as varicose veins is provided. The device includes a spacer that positions the distal end of the optical fiber away from the inner wall of the blood vessel during delivery of laser energy to provide an even distribution of thermal energy around the vessel, thereby avoiding vessel perforation and incomplete vessel collapse. | 10-03-2013 |
20130267938 | DUAL PORT ABLATION CANNULA AND KIT - A dual port ablation cannula kit includes a trocar and a hollow shaft defining a longitudinal lumen. The shaft has a proximal segment and a distal segment, such that the distal segment includes a distal tip substantially aligned with the shaft to permit passage of the trocar within the hollow shaft. The distal tip also is configured with a tissue-gripping surface in as much as a plane of the tissue-gripping surface is substantially perpendicular to a longitudinal axis of the shaft, dual ports extending from an exterior surface of the hollow shaft, each port defining a hollow passageway into the hollow shaft, and dual couplers, one coupling a suction line to one of the dual ports and another coupling an irrigation line to another of the dual ports. Finally, the kit can include a laser fiber. | 10-10-2013 |
20130274726 | OPTICAL FIBER AND AN UNDERWATER SHOCKWAVE GENERATING DEVICE EMPLOYING THE SAME - Provided are an optical fiber which has good laser beam condensation efficiency and is highly resilient, and a shockwave generating device employing same. An optical fiber ( | 10-17-2013 |
20130281994 | STEERABLE LASER PROBE - A steerable laser probe may include a handle, and inner bore of the handle, an actuation structure of the handle, a housing tube, and an optic fiber disposed within the inner bore of the handle and the housing tube. The housing tube may include a first housing tube portion having a first stiffness and a second housing tube portion having a second stiffness. The second stiffness may be greater than the first stiffness. A surgeon may aim the steerable laser probe by varying a rotational position of the handle and an amount of compression of the actuation structure. | 10-24-2013 |
20130338655 | SYSTEMS AND METHODS FOR A MULTIFUNCTION SURGICAL APPARATUS - Systems and methods for a multifunction surgical apparatus are provided. In one embodiment, a surgical separator comprises: a base; a plurality of separation tongs each movably coupled to the base at their proximal end, wherein the tongs have distal ends each having a blunt profile; a cable coupled to the base, the cable including an optical fiber, where the base is arrange to position the optical fiber to aim an optical energy beam from the optical fiber out from the base and between the tongs at a centered point between the distal ends; wherein the cable further includes at least one element providing a control signal that controls operation of the tongs to move between and open position and a closed position; wherein when the distal ends of each of the tongs are positioned together into the closed position, the exterior profile of the tongs forms a wedge shape having a tip where the tongs meet. | 12-19-2013 |
20130345686 | End Fire Fiber Arrangements with Improved Erosion Resistance - An end-firing optical fiber includes protective ferrule through which treatment radiation is fired in an axial direction, the protective ferrule having refractive properties that cause the radiation to disperse laterally and/or the fiber having sufficient flexibility to enable the fiber to be aimed at a tissue situated to the side of the axis along which the fiber was inserted. The fiber and protective ferrule may be mounted in a cannula, with the cannula being sufficiently flexible to enable the cannula to be withdrawn into a scope having a straight working channel, but has a pre-formed curvature that enables treatment of lateral tissues when the cannula is extended out of a scope. | 12-26-2013 |
20140052114 | HYBRID CATHETER FOR ENDOLUMINAL INTERVENTION - A device for resecting undesired tissue from an inner wall of a body cavity, the device having a tip section in a shape of a cylinder's sector, the tip section comprising: a plurality of optical fibers located along an inner surface of the tip section and configured to transmit laser radiation to the undesired tissue; and a cutter having a shape of a cylinder's sector located inwardly or outwardly to the plurality of optical fibers, wherein said cutter is configured to cut through the undesired tissue and thereby detach at least a part of the undesired tissue from the inner wall of the body cavity. | 02-20-2014 |
20140074077 | Method for Reducing the Absorption of Nutrients Through the Gastrointestinal Tract - The present invention features methods for applying a force, such as laser or radiofrequency (RF) energy to the wall of the small intestine, which targets and eliminates a portion of the capillary and vascular network responsible for the transportation of nutrients to the patient. This causes the patient to absorb a reduced percentage of nutrients, which results in a reduced caloric intake. Various types and shapes of applicators are used to deliver the treatment energy, and these applicator devices are within the scope of the present invention. The applicator can be deployed through either a body cavity (e.g., the oral cavity), an open surgical procedure, or a minimally invasive incision or incisions. | 03-13-2014 |
20140074078 | METHOD AND APPARATUS FOR LASER ABLATION UNDER ULTRASOUND GUIDANCE - A method for minimally invasive laser ablation of a target tissue within a patient while sparing tissue within a safety zone proximate to the target tissue, comprising: guiding a laser fiber within a patient with a guidance tool; measuring a temperature within the target tissue and the safety zone based on an invasive and a non-invasive thermal sensor; computing a thermal profile in conjunction with a real-time tissue image adapted for guidance of the laser fiber with the guidance tool within the patient; and controlling a laser to deliver energy through the laser fiber, to deliver a minimally therapeutic ablation therapy to the target tissue while ensuring that the safety zone is maintained in a non-ablation condition, based on at least a treatment plan, the measured temperature, and the thermal profile. | 03-13-2014 |
20140081253 | METHOD AND APPARATUS FOR LASER ABLATION UNDER ULTRASOUND GUIDANCE - A method and apparatus for performing minimally-invasive image-guided laser ablation of targeted region within a tissue or organ comprising the following: A guidance tool that can guide laser source to a predefined target region from a planning image; A controller that can control energy from laser source, duration of its application and dosage of energy from laser source; and a computer with software that can compute thermometry based on precise location and duration of application or dosage of the laser source. The computer receives signal from controller and can control or shut-off laser energy. | 03-20-2014 |
20140188095 | APPARATUS AND SYSTEMS FOR TISSUE DISSECTION AND MODIFICATION - Apparatus and systems for tissue dissection and modification are disclosed herein. A method for tissue dissection and modification may comprise inserting a tissue dissecting and modifying wand (TDM) through an incision in a patient's body. The TDM may comprise a modular tip having a plurality of protrusions with lysing segments positioned between the protrusions to dissect and/or modify tissue. The TDM may also comprise an energy window positioned on top of the TDM that is configured to deliver energy via thermochromic means to modify tissues. After separating tissue using the lysing segment(s) to define a target region, the energy window may be activated and moved around within the target region to modify tissues. In some implementations, the energy window may be activated prior to and/or during dissection of the tissue such that the tissue is separated while tissue is modified within the target region. | 07-03-2014 |
20140221989 | METHOD AND SYSTEM FOR PHOTOSELECTIVE VAPORIZATION OF THE PROSTATE, AND OTHER TISSUE - A method for photoselective vaporization of prostate tissue includes delivering laser radiation to the treatment area on the tissue, via an optical fiber for example, wherein the laser radiation has a wavelength and irradiance in the treatment area on the surface of the tissue sufficient because vaporization of a substantially greater volume of tissue than a volume of residual coagulated tissue caused by the laser radiation. The laser radiation is generated using a neodymium doped solid-state laser, including optics producing a second or higher harmonic output with greater than 60 watts average output power. The delivered laser radiation has a wavelength for example in a range of about 200 nm to about 650 nm, and has an average irradiance in the treatment area greater than about 10 kilowatts/cm | 08-07-2014 |
20140243806 | Fiber Embedded Hollow Needle For Percutaneous Delivery Of Laser Energy - Some implementations provide an apparatus for percutaneous delivery of laser energy, the apparatus including two or more hollow spikes, each having an insertion end and a coupling end, each including an optical fiber embedded as a permanent fixture therein, each optical fiber capable of emitting laser from the insertion end of the corresponding hollow spike; and \a hub coupled to the two or more hollow spikes at the respective coupling ends of each hollow spike, the hub including a connector for coupling the apparatus to a laser generator. | 08-28-2014 |
20140276694 | Device and Method of Ablative Cutting with Helical Tip - Catheter devices for ablation and removal of occlusions from blood vessels and methods of using the same are provided. Catheter devices are useful to ablate, cut, dislodge, and otherwise remove occlusions within a blood vessel that may limit or prevent proper circulation. Distal features of the catheter devices comprise arrangements of laser ablative or mechanical cutting features that generally provide enhanced surface areas and cutting functions. Spiral or helical arrangements are provided to aid in cutting operations. | 09-18-2014 |
20140276695 | ANGULAR OPTICAL FIBER CATHETER - A laser catheter assembly is provided that includes a plurality of laser active fibers, each fiber having a substantially non-circular fiber cross-section. | 09-18-2014 |
20140276696 | THREADED LEAD EXTRACTION DEVICE - Methods and devices for separating an implanted object, such as a lead for a mechanical pacemaker or a cardioverter defibrillator, from tissue surrounding such object in a patient's vasculature system. The methods and devices comprise a means for applying tension to the object at the working end of a catheter to reduce the catheter's likelihood of bending or kinking the lead during extraction. | 09-18-2014 |
20140276697 | ABLATION CANNULA AND KIT WITH INSERT - An ablation cannula kit with insert includes a trocar and cannula with a hollow shaft. The hollow shaft is configured to permit passage of the trocar therethrough. An auxiliary port extends from an exterior surface of the cannula and defines a hollow passageway into the hollow shaft. Notably, an insert is included in the kit. The insert defines a hollow shaft and is adapted to be inserted into the hollow shaft of the cannula. An auxiliary port extends from an exterior surface of the insert defining a hollow passageway into the hollow shaft of the insert. Finally, a laser fiber is included with a diameter less than an interior diameter of the hollow shaft of the insert so as to permit passage of the fiber through the hollow shaft of the insert. | 09-18-2014 |
20140309627 | SIDE-FIRING LASER FIBER WITH GLASS FUSED REFLECTOR AND CAPILLARY AND RELATED METHODS - A method and an apparatus according to an embodiment of the invention includes a reflector and an optical fiber end portion disposed within a capillary for use in side-firing optical fibers. The reflector surface can be coated with a multilayer dielectric coating to increase the amount of side-fired laser energy. An outer member or cap can be used to protect the capillary when being inserted through a catheter or endoscope. The endoscope is then at least partially inserted into a patient's body to provide laser-based medical treatment. Multiple grooves can be defined on an outer surface of the optical fiber buffer layer to increase the surface area and improve the mechanical strength of the coupling between the optical fiber and the capillary. In some embodiments, the outer member or cap can also be coupled to the grooved surface portion of the optical fiber buffer layer. | 10-16-2014 |
20140316397 | Protective Sheath for Surgical Laser Fiber - A protective sheath of the type used to protect a scope during insertion of a fiber into the scope may include holes for improved fluid flow and for ease of sterilization, reinforcement, a luer connector to position the sheath relative to a scope and to enable use of a seal, pin vise or other device to secure the fiber to sheath during insertion or withdrawal of the sheath from the scope, and/or markings to facilitate positioning of the sheath relative to the scope and/or trimming of the fiber. | 10-23-2014 |
20140330261 | CATHETER FOR PERFORMING PHOTODYNAMIC ABLATION OF CARDIAC MUSCLE TISSUE VIA PHOTOCHEMICAL REACTION - This invention provides a catheter used for blocking abnormal conduction in the cardiac muscle using photodynamic therapy or treating arrhythmia and a method for evaluating the therapeutic effects of the catheter. The catheter has a structure that freely bends at its end, which is used for performing photodynamic ablation of cardiac muscle tissue via photochemical reactions in the blood vessel or cardiac lumen. The catheter comprises a light-emitting window for applying a light beam transmitted through an optical fiber to a target site of cardiac muscle tissue and at least two electrodes for potential measurement in the periphery of the light-emitting window. | 11-06-2014 |
20140358134 | Method of Treating a Blood Vessel with an Optical Fiber Having a Spacer - An endovascular laser treatment device designed to be used with an optical fiber to treat venous diseases such as varicose veins is provided. The device includes a spacer that positions the distal end of the optical fiber away from the inner wall of the blood vessel during delivery of laser energy to provide an even distribution of thermal energy around the vessel, thereby avoiding vessel perforation and incomplete vessel collapse. | 12-04-2014 |
20150011985 | SIDE-FIRING FIBER DELIVERY DEVICE WITH ACTIVE COOLING CAP - An optical fiber includes an internal fiber, an end surface, a first cap member and a second cap member. The internal fiber terminates at a fiber tip. The end surface transmits laser energy delivered through the internal fiber. The first cap member extends over the end surface and includes a first end on a first side of the end surface and a second end on a second side of the end surface. The second cap member extends over the first cap member and includes a first end on the first side of the end surface and a second end on the second side of the end surface, the second end of the second cap member is attached to the second end of the first cap member. | 01-08-2015 |
20150011986 | METHODS AND APPARATUS RELATED TO A SIDE-FIRE ASSEMBLY THAT HAS AN OPTICAL GRATING - An apparatus may include an optical fiber having an angled grating aligned along a plane non-normal to a longitudinal axis of a distal end portion of the optical fiber. The angled grating may be configured to redirect a first laser energy propagated within the optical fiber and incident on the angled grating to a direction offset from the longitudinal axis. The apparatus may also include a metallic cap coupled to the optical fiber. The metallic cap may have an inner surface configured to redirect a second laser energy incident on the inner surface along the direction offset from the longitudinal axis. The second laser energy being different than the first laser energy. | 01-08-2015 |
20150025512 | DEVICE AND METHOD FOR ENDOVASCULAR TREATMENT FOR CAUSING CLOSURE OF A BLOOD VESSEL - An endovascular laser treatment device for causing closure of a blood vessel uses an optical fiber adapted to be inserted into a blood vessel. An inner sleeve is arranged around a distal portion of the optical fiber core such that both distal ends of the inner sleeve and the optical fiber core form an enlarged light emitting face. The enlarged emitting face provides substantially lower power density while providing the same amount of total energy during a treatment session. An outer sleeve arranged around the inner sleeve acts as a spacer to position the light emitting face away from an inner wall of the blood vessel. The enlarged light emitting face and the outer sleeve acting as a spacer reduces the possibility of thermal run-away and device damage, and reduce the possibility of vessel perforations, leading to less bruising, post-operative pain and other clinical complications. In yet another aspect of the present invention, a spacer comprises an inner sleeve and an outer sleeve both arranged around a distal portion of the core to prevent the laser light from traveling laterally and to position the light emitting face away from an inner wall of the vessel. The inner sleeve can be a heat resistive material such as ceramic and the outer sleeve can be, for example, a metallic sleeve to provide structural integrity and strength to the distal section of the treatment device. | 01-22-2015 |
20150045779 | LASER TISSUE ABLATION SYSTEM - Embodiments of a laser ablation system include a shaft, a balloon and a laser fiber. The shaft has a proximal end and a distal end. The balloon is attached to the distal end of the shaft, a portion of which is disposed within the balloon. A light dispenser at a distal end of the laser fiber deliver laser light through the balloon. A central axis of the balloon is aligned with a longitudinal axis of the shaft. The balloon has a variable transparency such that the transmission of laser light through the balloon is non-uniform along the central axis. Accordingly, an energy of laser light transmitted from the light dispenser through the balloon to the targeted tissue varies due to the variable transparency of the balloon. | 02-12-2015 |
20150057648 | Laser Device and Method of Use - It is an object and advantage of this invention to provide an improved device and method that uses targeted laser wavelength to treat a diseased vessel. An advantage of this invention is targeted ablation of diseased vessels without harming non-target tissue. This new technique allows for a controlled ablation, may not require injection of tumescent anesthesia prior to treatment and may decrease unwanted or unintended side effects. | 02-26-2015 |
20150066004 | METHODS AND APPARATUS RELATED TO A LAUNCH CONNECTOR PORTION OF A URETEROSCOPE LASER-ENERGY-DELIVERY DEVICE - In one embodiment, an apparatus includes an optical fiber made of a silica-based material. A proximal end portion of the optical fiber has an outer-layer portion. The proximal end portion can be included in at least a portion of a launch connector configured to receive electromagnetic radiation. The apparatus also includes a component that has a bore therethrough and can be made of a doped silica material. The bore can have an inner-layer portion heat-fused to the outer-layer portion of the optical fiber. The component can also have an index of refraction lower than an index of refraction associated with the outer-layer portion of the optical fiber. | 03-05-2015 |
20150073399 | Hand-Held Portable Laser Surgical Device - A hand-held, portable diode laser surgical device includes a power supply, at least one laser diode, integral control interface and display, and a multi-component sterile, disposable tip apparatus featuring assembly for alignment of a self-contained optical fiber to the surgical device, and releasably locking assembly between the tip apparatus and surgical device. An embodiment includes wireless foot pedal on/off control and a dock providing sterile, antiseptic recharging environment. | 03-12-2015 |
20150141974 | OPTICAL FIBER WITH SMOOTH TIP - A laser fiber has a distal end having a laser fiber face. A tip addition is attached to or formed onto the fiber face. The material of the tip addition one of fragments or melts when laser energy from a suitable laser device is passed through the laser fiber and through the tip addition. | 05-21-2015 |
20150148789 | METHOD OF POSITIONING A SURGICAL LASER FIBER AND SURGICAL LASER FIBER POSITIONING ARRANGEMENT INCLUDING A FLEXIBLE INTRODUCER SLEEVE FOR IMPLEMENTING THE POSITIONING METHOD - A method for positioning a surgical laser fiber to facilitate delivery of therapeutic light to a tissue utilizes a flexible insertion sleeve to protect a scope as the fiber and sleeve are guided to a treatment site past bends in the scope. The fiber and sleeve are fixed relative to the scope by a fiber lock. The sleeve may include holes and/or other optional features to protect the fiber or scope during insertion and treatment. | 05-28-2015 |
20150148790 | TAPERED LIQUID LIGHT GUIDE - A catheter tip is provided according to various embodiments of the disclosure. The catheter tip may comprise a distal end, a proximal end, and tubular walls. The distal end includes a distal aperture with a distal inside diameter, and the proximal end includes a proximal aperture with a proximal inside diameter. The proximal inside diameter may be greater than the distal inside diameter. The proximal end comprises attachment means configured to couple the proximal end with a distal end of a laser catheter. The tubular walls may include at least an inside taper from the proximal end to the distal end such that the inner tubular walls generally taper from the proximal inside diameter to the distal inside diameter. Moreover, the tubular walls may be configured to direct at least a liquid medium, for example, a biocompatible solution, toward the distal aperture. | 05-28-2015 |
20150305812 | PREVENTION OF STEAM POPS DURING ABLATION - Tissue ablation is carried out using a probe having a distal conductive cap. At least one optical fiber is contained within the probe and terminates in proximity to an outer surface of the conductive cap. The optical fiber conveys optical radiation to the tissue while the power generator is activated and receives reflected optical radiation. An optical module measures the received reflected optical radiation, and a processor linked to the optical module analyzes the reflected optical radiation to determine impending steam pop events. | 10-29-2015 |
20150327931 | OPTICAL ENERGY-BASED METHODS AND APPARATUS FOR TISSUE SEALING - Optical energy-based methods and apparatus for sealing vascular tissue involves deforming vascular tissue to bring different layers of the vascular tissue into contact each other and illuminating the vascular tissue with a light beam having at least one portion of its spectrum overlapping with the absorption spectrum of the vascular tissue. The apparatus may include two deforming members configured to deform the vascular tissue placed between the deforming members. The apparatus may also include an optical system that has a light source configured to generate light, a light distribution element configured to distribute the light across the vascular tissue, and a light guide configured to guide the light from the light source to the light distribution element. The apparatus may further include a cutting member configured to cut the vascular tissue and to illuminate the vascular tissue with light to seal at least one cut surface of the vascular tissue. | 11-19-2015 |
20150359595 | HYBRID CATHETER APPARATUS AND METHODS - A hybrid catheter device for performing cutting action on a region of a tissue, using sequential laser and mechanical cutting processes, and incorporating an acoustic sensor on the end of the device, such that if a pulsed laser beam is used for the laser cutting, the absorption of that beam in the tissue being cut can provide information about the progress of the cut by means of the opto-acoustic effect. Other hybrid catheter devices incorporate blunt protrusions on the end of said device, but having sharp lateral edges, such that rotation of the catheter device generates mechanical cutting action in the tissue. The blunt protrusion ends prevents uncontrolled cutting in the forward motion. Other hybrid catheter devices enable controlled incisions into an organ wall, such as the duodenum, and held in place by means of an inflatable balloon. A dual-wavelength nail fungus treatment hybrid catheter is also shown. | 12-17-2015 |
20160001064 | ENDOCARDIAL LEAD CUTTING APPARATUS - In some embodiments, without limitation, the invention comprises an apparatus for cutting an endocardial lead within a patient. The apparatus comprises a generally flexible tubular member having a proximal end and distal end. At least one blade or cutting surface is affixed to the distal end of the tubular member. The apparatus optionally includes an adjustment mechanism adapted to adjust the blade or cutting surface between an extended position and a retracted position. The blade or cutting surface engages the endocardial lead to cut the lead. Various embodiments include a v-shaped groove defining the cutting surfaces. Other embodiments may comprise a rotatable blade of an inner shaft rotating within the tubular member and cutting the lead received within the v-shaped groove, and blades or cutting surfaces functioning like guillotines or scissors retracting into a distal end of the tubular member. | 01-07-2016 |
20160074117 | MEDICAL DEVICE WITH ORIENTABLE TIP FOR ROBOTICALLY DIRECTED LASER CUTTING & BIOMATERIAL APPLICATION - A medical device used in a medical robotic system has a conduit and an orientable tip. An optical fiber coupled to a laser source and/or a catheter coupled to one or more biomaterial sources extends through the conduit and tip so that the tip of the medical device may be robotically directed towards a target tissue for laser and/or biomaterial application as part of a medical procedure performed at a surgical site within a patient. A protective sheath covers the fiber as it extends through the conduit and tip. A first coupler adjustably secures at least the sheath to the medical device and a second coupler adjustably secures the fiber to at least the sheath. A similar dual coupler mechanism may be used to secure the sheathed catheter to the medical device. | 03-17-2016 |
20160081749 | SURGICAL LASER SYSTEMS AND LASER LITHOTRIPSY TECHNIQUES - A laser fiber for use in performing a medical laser treatment includes an optical fiber and a fiber tip. The optical fiber includes a terminating end surface at a distal end. The fiber tip is positioned at the distal end of the optical fiber and includes a transmissive portion and a spacer portion. Laser energy discharged from the terminating end surface of the optical fiber is transmitted through the transmissive portion. The spacer portion defines a distal terminating end of the fiber tip that is spaced a predetermined distance from the terminating end surface of the optical fiber. The predetermined distance is set for shock wave generation for calculus destruction at the distal terminating end of the fiber tip. | 03-24-2016 |
20160081854 | STEERABLE LASER PROBE - A steerable laser probe may include an actuation structure, a nosecone fixed to the actuation structure by one or more links and one or more link pins, a housing tube having a first housing tube portion with a first stiffness and a second housing tube portion with a second stiffness, and an optic fiber disposed in the housing tube and the actuation structure. A compression of the actuation structure may be configured to gradually curve the housing tube and the optic fiber. A decompression of the actuation structure may be configured to gradually straighten the housing tube and the optic fiber. | 03-24-2016 |
20160089203 | IRRADIATION DEVICE - There is provided an irradiation device which irradiates light on an inner side face of a biological lumen. The irradiation device includes an optical fiber through which light passes, and a plurality of optical members each having a spherical shape. The plurality of optical members are arrayed in a line along a direction in which light emitted from a distal end of the optical fiber is radiated so that the light is radiated toward the inner surface of the biological lumen. | 03-31-2016 |
20160106501 | Endovascular Treatment Apparatus and Method - An endovascular sheath device for use with a thermal treatment apparatus is provided. The device includes a longitudinal tube which is designed to receive a thermal treatment device and is designed to be inserted into a blood vessel. An ultrasonically visible reinforcement element is disposed along the length of the longitudinal tube. The reinforcement element such as a braided wire provides several functions including increased visibility under ultrasound, clearer identification of sheath tip, and increased durability to protect the fiber from needle punctures during tumescent injections into the perivenous space. The wire reinforcement also increases shaft torquability and kink resistance during sheath insertion and withdrawal. | 04-21-2016 |
20160135893 | EXPANDABLE LASER CATHETER - Expandable laser catheters for utilizing laser energy to remove obstructions from body passages are described. In one embodiment, the laser catheter includes a shaftway having a distal end including a flexible portion configured in a series of radial folds. Multiple optical fibers, configured to transmit laser energy, extend along the shaftway and are attached to the flexible portion. An inflatable, ring-shaped balloon is attached to the catheter within the flexible portion. In use, the catheter is inserted into a body passage such as an artery, and advanced until the distal end is adjacent to an obstruction. The balloon is inflated to expand the flexible portion and to bring the optical fibers nearer the inner wall of the body passage. Laser energy is directed by the optical fibers toward targeted regions of the obstruction, As the catheter is advanced and the process repeated, a core is formed from the obstruction and contained within the flexible portion. The flexible portion is then contracted to hold the core, and the core is removed from the body passage by withdrawing the catheter. | 05-19-2016 |
20160135894 | Aiming beam detection for safe laser lithotripsy - Medical apparatus includes an endoscope, which includes a distal end configured for insertion into a body cavity and which includes an imaging assembly, configured to capture and output an image of a region of the body cavity in proximity to the distal end. An energy source is configured to emit pulses of energy through an energy guide. A control unit is configured to process the image so as to identify a target mass in the body cavity and to verify that an aiming beam directed through the energy guide is incident on the target mass and, responsively to so verifying, to actuate the energy source to direct a pulse of the energy via the energy guide onto the target mass. | 05-19-2016 |
20160174956 | MEDICAL RETRIEVAL SYSTEMS AND RELATED METHODS | 06-23-2016 |
20160184020 | LASER CATHETER WITH USE OF REFLECTED LIGHT AND FORCE INDICATION TO DETERMINE MATERIAL TYPE IN VASCULAR SYSTEM - Apparatus and methods for determining a type of a material in a region within a vascular system of a patient are provided. The determination is made after light has been reflected from the region after being supplied to the region from a light source by at least one optical fiber. The determination is made based on an analysis of the light reflected from the region and of a received at least one indication of a force applied to the material in the region by one or more of the at least one optical fiber. The indication of the force applied by the one or more of the at least one optical fiber is provided by at least one force sensor coupled to the at least one optical fiber. | 06-30-2016 |
20160184021 | LASER CATHETER WITH USE OF DETERMINED MATERIAL TYPE IN VASCULAR SYSTEM IN ABLATION OF MATERIAL - Apparatus and methods for ablating material in a region within a vascular system of a patient are provided. A determination of at least one of a type of material in the region and an indication of a distance to the material in the region is made based on at least one property of the region determined from light reflected from the region. Light from a light source is transmitted in at least one of a plurality of optical fibers based on the determination, and at least some of the transmitted light is received at a first emitter disposed along a length of a laser catheter proximate a distal end thereof. The first emitter radially transmits the at least some of the light from the length of the laser catheter so that the light impinges upon and ablates the material through an opening in the length of the laser catheter. | 06-30-2016 |
20180021173 | STEERABLE LASER PROBE | 01-25-2018 |
20190142517 | MEDICAL LASER FIBER | 05-16-2019 |