38th week of 2014 patent applcation highlights part 175 |
Patent application number | Title | Published |
20140276705 | NERVE AND SOFT TISSUE ABLATION DEVICE HAVING RELEASE INSTRUMENT - Ablation devices useful for destroying nerve and soft tissue via a minimally invasive procedure to alleviate pain are provided. The device comprises a probe comprising an interior surface that defines an internal passage and an exterior surface comprising a tip. The internal passage has a filament comprising an opening configured to release a pressurized material into the interior surface of the probe so as to cool the exterior surface of the probe to a selected temperature. A release instrument is provided comprising a sheath that comprises an exterior surface and an interior surface configured for engagement with the probe. The probe tip is configured for ablating nerve and/or soft tissue by forming an ice ball and the release instrument is configured to release the probe tip from the ice ball. Methods for ablating nerve and/or soft tissue utilizing the ablation devices are also provided. | 2014-09-18 |
20140276706 | Therapeutic Cryoablation System - A cryoablation system has a gas source which provides a working nitrogen gas at room temperature and at a constant set pressure, a liquid generator which is coupled to the gas source to receive the working gas, and which then generates a working cryogen fluid, and a catheter coupled to the liquid generator for receiving the working cryogen, the catheter having a distal section having a freezing element which delivers the working cryogen to a treatment location, the catheter also having a balloon positioned adjacent the distal section. | 2014-09-18 |
20140276707 | SYSTEM AND METHOD OF USING EVOKED COMPOUND ACTION POTENTIALS TO MINIMIZE VESSEL TRAUMA DURING NERVE ABLATION - A therapy system for use with a patient and a method of treating a medical condition of a patient. Electrical stimulation energy is delivered to a stimulation site on the wall of a blood vessel, thereby evoking at least one compound action potential in a nerve branch associated with the blood vessel. The evoked compound action potential(s) is sensed at a sensing site on the wall of the blood vessel. A circumferential location of the nerve branch is identified as being adjacent one of the stimulation site and the sensing site based on the sensed compound action potential(s). Ablation energy is delivered to an ablation site on the wall of the blood vessel adjacent the circumferential location of the nerve branch, thereby ablating the nerve branch and treating the medical condition. | 2014-09-18 |
20140276708 | Methods and Systems for Treatment of Spasticity - A system for alleviating spasticity of a skeletal muscle having an associated motor nerve. The system may include a needle probe having at least one needle. The at least one needle has a proximal end, a distal end, and a needle lumen therebetween. The needle is configured for insertion proximate to the nerve. A cooling fluid supply lumen can extend distally within the needle lumen to a distal portion of the needle lumen. A cooling fluid source is couplable to the cooling fluid supply lumen to direct cooling fluid flow into the needle lumen. A controller having at least one processor configured to implement a spasticity treatment algorithm for controlling the cooling fluid source so that liquid from the cooling flow vaporizes within the needle lumen to provide a treatment phase to the motor nerve such spasticity of the skeletal muscle is mitigated. | 2014-09-18 |
20140276709 | VEIN OCCLUSION ASSESSMENT USING TEMPERATURE - A medical system, comprising an ablation catheter is disclosed. The ablation catheter includes an elongate shaft with a proximal end, a distal end and a lumen disposed between the proximal end and the distal end. The ablation catheter also includes an expandable element in fluid communication with the lumen, a first temperature sensor operable to measure a first temperature; and a second temperature sensor operable to measure a second temperature. The first temperature sensor and the second temperature sensor are longitudinally separated from each other by at least a portion of the expandable element. | 2014-09-18 |
20140276710 | DEVICE AND METHOD FOR IMPROVED SAFETY AND EFFICACY FOR CRYOABLATION - A method and system for improved lesion creation. The method generally includes positioning a treatment element of a medical device proximate an area of target tissue and operating a control unit in accordance with a duty cycle, that includes at least one freeze-warm cycle, each freeze-warm cycle including: supplying coolant to the treatment element at a first flow rate that causes the treatment element to reach a first temperature, the first temperature causing ablation of the target tissue and cryoadhesion between the treatment element and target tissue, and supplying coolant to the treatment element at a second flow rate that causes the treatment element to reach a second temperature, the second temperature being higher than the first temperature and the second flow rate being lower than the first flow rate, the second temperature being above a temperature at which ablation occurs and below a temperature at which cryoadhesion is broken. | 2014-09-18 |
20140276711 | Therapeutic Cryoablation System - A cryoablation system has a gas source which provides a working nitrogen gas at room temperature and at a constant set pressure, a liquid generator which is coupled to the gas source to receive the working gas, and which then generates a working cryogen fluid, and a catheter coupled to the liquid generator for receiving the working cryogen, the catheter having a distal section having a freezing element which delivers the working cryogen to a treatment location, the catheter also having a balloon positioned adjacent the distal section. | 2014-09-18 |
20140276712 | CONTACT SPECIFIC RF THERAPY BALLOON - A catheter including a proximal end and a distal end. An expandable element coupled to the distal end is included, the expandable element including a proximal portion and a distal portion, the expandable element defining an exterior surface. A first plurality of electrodes coupled to the exterior surface of the distal portion of the expandable element are included, each of the first plurality of electrodes being selectively operable to transmit unipolar radiofrequency energy. A second plurality of electrodes coupled to the exterior surface of the proximal portion of the expandable element are included, each of the second plurality of electrodes being selectively operable to transmit bipolar radiofrequency energy. | 2014-09-18 |
20140276713 | MEDICAL SYSTEM AND METHOD OF USE - Methods, systems and devices for applying energy to tissue, and more particularly relates to a system for ablating or modifying structures in a body with systems and methods that generate a flow of vapor at a controlled flow rate for applying energy to the body structure | 2014-09-18 |
20140276714 | ACTIVE INFUSION SHEATH FOR ULTRASOUND ABLATION CATHETER - Systems for nerve and tissue modulation are disclosed. An example system may include an intravascular nerve modulation system including an elongated shaft having a first tubular member and a second tubular member. Each of the tubular members may have a proximal end a distal end. The distal end of the second tubular member may be extended distally beyond the distal end of the first tubular member. The system may further include at least one transducer affixed to the distal end region of the second tubular member. In addition, the system may include an infusion sheath having a proximal end and a distal end and the proximal end of the infusion sheath may be fixedly secured to the catheter shaft adjacent the distal end of the first tubular member. | 2014-09-18 |
20140276715 | Mechanically Heated Catheter - Systems and methods for mechanically heated catheter tips are provided. The systems include, for example: a catheter body with an axial lumen; a catheter tip with at least some of the tip constructed out of a high-friction, thermally-conductive material; a friction producing plug disposed in the axial lumen of the catheter tip and constructed at least in part out of a high-friction material; a drive wire running through the axial lumen of the catheter body being connected on the proximal end to a power source and on the distal end to the friction producing plug. Methods include using the drive wire to rotationally or axially translationally move the friction producing plug within the catheter tip. The friction produced by the movement of the friction producing plug and the inner wall of the catheter tip generates heat which can be conducted outward by the thermally conductive material. | 2014-09-18 |
20140276716 | CATALYZED EXOTHERMIC ABLATION DEVICE - The invention relates to devices, systems, and methods for heating tissue, including ablating a tumor, using the catalyzed heat of decomposition of hydrogen peroxide solutions. A hydrogen peroxide solution is contacted with a catalyst to decompose the hydrogen peroxide and heat the distal tip of a catheter to a temperature effective to ablate a target tissue. | 2014-09-18 |
20140276717 | BIPOLAR GAS PLASMA COAGULATION NOZZLE - A plasma instrument is disclosed. The plasma instrument includes an elongated body defining a first lumen therethrough, the lumen being in fluid communication with an ionizable media source; an applicator tip coupled to a distal end of the elongated body and disposed within the first lumen, the applicator tip defining a second lumen in fluid communication with the first lumen; a first electrode disposed on an outer surface of the applicator tip; and a second electrode disposed within at least one of the first lumen or the second lumen, wherein the first and second electrodes are configured to be energized to ignite ionizable media supplied by the ionizable media source. | 2014-09-18 |
20140276718 | Direct Heat Ablation Catheter - Catheter apparatuses, systems, and methods for achieving renal neuromodulation by intravascular access are disclosed herein. One aspect of the present technology, for example, is directed to a treatment device including a therapeutic assembly having a central axis and a distal portion and a proximal portion axially spaced along the central axis, the therapeutic assembly including a core element extending from the proximal portion to the distal portion and a heating element disposed along at least a portion of a length of the core element. An energy source provides electrical current to the heating element to cause the heating element to increase in temperature. | 2014-09-18 |
20140276719 | ELECTROSURGICAL DEVICE WITH DRUM-DRIVEN ARTICULATION - A surgical device for operating on tissue comprises an end effector, a shaft, and an interface assembly. The shaft comprises an articulation section operable to provide deflection of the end effector relative to the longitudinal axis of the shaft. The interface assembly comprises a plurality of pulleys associated with drive shafts driven by an external system. The pulleys are operable to cause rotation of one or both of the shaft or end effector. The pulleys are further operable to cause articulation of the articulation section. The interface assembly further comprises drive components operable to cause movement of components of the end effector. | 2014-09-18 |
20140276720 | ROBOTIC ELECTROSURGICAL DEVICE WITH DISPOSABLE SHAFT - An apparatus includes an interface assembly and a shaft assembly. The interface assembly is for use with a robotic system and includes a first drive assembly. The first drive assembly includes a first slot having a distal recess and a transverse recess. The shaft assembly is removably couplable with the interface assembly and includes an end effector and a first coupling feature. The first drive assembly of the interface assembly actuates the end effector of the shaft assembly. The first coupling feature is couplable with the first slot of the first drive assembly to longitudinally fix the shaft assembly relative to the interface assembly. | 2014-09-18 |
20140276721 | EXPANDABLE CANNULA AND METHOD OF USE - A cutting device includes an elongated shaft that extends between a proximal end and a distal end. A distal arm extends from the distal end of the elongated shaft. The distal arm includes an inner surface defining a cavity and an outer surface defining a blunt tip. At least one proximal arm extends from the distal end of the elongated shaft at a position proximal to the distal arm. The at least one proximal arm having an inner surface defines a cavity including a cutting portion configured to cut tissue. | 2014-09-18 |
20140276722 | ELECTROSURGICAL DEVICE WITH DISPOSABLE SHAFT HAVING MODULAR SUBASSEMBLY - An apparatus comprises an end effector, a shaft assembly, and an interface assembly. The end effector is operable to manipulate tissue, the shaft assembly is in communication with the end effector and a portion of the shaft assembly extends proximally from the end effector. The interface assembly is in communication with the shaft assembly. The interface assembly comprises a housing portion, a shaft cartridge, and a base portion. The housing portion can engage the shaft cartridge. The shaft cartridge is able to rotate and articulate the end effector, and the shaft assembly extends from the shaft cartridge. The base portion and the housing portion are able to enclose the shaft cartridge. | 2014-09-18 |
20140276723 | ELECTROSURGICAL DEVICE WITH DISPOSABLE SHAFT HAVING RACK AND PINION DRIVE - An apparatus comprises an end effector, a shaft assembly, and an interface assembly. The end effector is coupled with the shaft assembly. The shaft assembly comprises a translating member extending through the shaft assembly. The interface assembly is operable to engage the shaft assembly and comprises a plurality of drive shafts and a rack. One of the drive shafts is operable to drive the rack along a path that is parallel to the longitudinal axis of the shaft assembly. A plurality of racks may be used to rotate the shaft assembly, articulate the shaft assembly, and/or drive the translating member through the shaft assembly to thereby actuate the end effector. | 2014-09-18 |
20140276724 | RADIOFREQUENCY INFLATABLE DEVICE - A device for performing a surgical procedure comprises an elongated shaft extending between a proximal end and a distal end and defines an outer surface and an inner surface. An expandable member is disposed at the distal end and is configured to receive inflation material. At least one electrode is disposed with the inflatable member. A cooling mechanism is configured to cool surrounding tissue that the device comes in contact. | 2014-09-18 |
20140276725 | METHOD AND SYSTEM OF CONTROLLING CONDUCTIVE FLUID FLOW DURING AN ELECTROSURGICAL PROCEDURE - Controlling conductive fluid flow during an electrosurgical procedure. At least some of the example embodiments are methods including: flowing conductive fluid from a source lumen to a suction lumen of an electrosurgical wand, the flowing with the electrosurgical wand in a first orientation; sensing a change in orientation of the electrosurgical wand to a second orientation different than the first orientation; and changing a control parameter associated with the conductive fluid flow, the changing responsive to the change in orientation of the electrosurgical wand. | 2014-09-18 |
20140276726 | INTRAUTERINE TREATMENT DEVICE WITH ARTICULATING ARRAY - An intrauterine device includes an articulating array. The intrauterine device can be operated by articulating the articulating array into an installed position or geometry within the uterus of a patient. Further, the articulating array can be constructed to include an insertion geometry have a smaller cross section than an installation geometry. The articulating array can also be constructed to be housed within a sheath in the intrauterine device. Once the sheath has been inserted into a patient, for example through the patient's cervix, the articulating array can be deployed in its insertion geometry and then articulated into an installed position. The articulating array can include a plurality of expansion chambers. The expansion chambers can be constructed and arranged to take on the installed geometry when expanded. In one embodiment, the purpose of the articulating array is to position a conductive array within the patient's uterus enabling ablation of the uterine lining. | 2014-09-18 |
20140276727 | Reliable Low Profile Junction for Electrode Array - A device and method for retrieving an electrode array. The medical device includes a catheter defining a proximal end, a distal end, and a lumen therethrough. A control wire slidably receivable within the lumen is included, the control wire defining a proximal end and a distal end, the distal end of the control wire defining an enlarged portion. A treatment portion receivable within the lumen is included, the treatment portion including a proximal portion adapted to receive the enlarged portion at the distal end of the control wire. | 2014-09-18 |
20140276728 | RADIO FREQUENCEY CATHETER TO TARGET LIGAMENTUM FLAVUM - A device for performing a surgical procedure an elongated shaft extending between a proximal end and a distal end and includes an outer surface and an inner surface, the inner surface defining a passageway. A stylet configured for moveable disposal within the passageway of the elongated shaft. The stylet includes a blunt distal tip configured for disposal outside the distal end of the elongated shaft and to prevent damage to adjacent tissue. An expandable member including a proximal end and a distal end. The proximal end of the expandable member is disposed with the distal end of the elongated shaft and the distal end of the expandable member is connected to the distal end of the stylet. At least one electrode disposed with the expandable member. | 2014-09-18 |
20140276729 | FORMED DEPLOYABLE SUPERELASTIC BLADE AND METHOD OF USE - A device includes an outer member extending along a longitudinal axis between a first end and a second end. The first end includes an opening. The outer member includes an inner surface defining a first passageway that is in communication with the opening. An inner member is movably disposed in the first passageway. The inner member includes an inner surface defining a second passageway. The inner member further includes a first end including a cutting tip. The inner member is movable between a first orientation in which the cutting tip is disposed within the first passageway and the inner member has a linear configuration and a second orientation in which the cutting tip extends through the opening and the inner member has an arcuate configuration. Methods of use are provided. | 2014-09-18 |
20140276730 | SURGICAL INSTRUMENT WITH REINFORCED ARTICULATION SECTION - An apparatus comprises a shaft, and end effector, and an articulation section. The articulation section is disposed between the shaft and the end effector. The articulation section includes a proximal portion and a distal portion. The distal portion is pivotable relative to the proximal portion about a first pivot axis. A reinforcement member extends between the proximal and distal portions. The reinforcement member is configured to pivot relative to the proximal portion about a second pivot axis. The reinforcement member is configured to pivot relative to the distal portion about a third pivot axis. An articulation section may include a combination of a pivoting section and a flexing section. Reinforcement members may prevent a firing beam from buckling as the firing beam is driven through an articulated articulation section. | 2014-09-18 |
20140276731 | ELECTROSURGICAL INSTRUMENT END EFFECTOR WITH COMPLIANT ELECTRODE - An end effector for operating on tissue comprises an upper jaw, a lower jaw, a flexible member, and a pair of conductive members. The upper jaw and the lower jaw are configured to receive tissue when in an open position and the upper jaw is movable toward the lower jaw. The flexible member is coupled to either the upper jaw or the lower jaw, and is configured to deform in response to compression of tissue between the jaws. One of the conductive members is associated with the flexible member and is configured to move with the flexible member in response to compression of tissue between the jaws. The end effector may be configured to manipulate the position of muscle within tissue in response to compression of tissue between the jaws. | 2014-09-18 |
20140276732 | ELECTROSURGICAL INSTRUMENT WITH RESTRICTED TRIGGER - An apparatus for operating on tissue includes an end effector, a first actuator, and a second actuator. The end effector includes a first jaw pivotable relative to a second jaw to a closed position. The first actuator is movable from a first position to a second position to pivot the first jaw to the closed position. The first actuator engages the second actuator in the second position to selectively provide RF energy to the end effector. | 2014-09-18 |
20140276733 | MEDIGUIDE-ENABLED RENAL DENERVATION SYSTEM FOR ENSURING WALL CONTACT AND MAPPING LESION LOCATIONS - An ablation catheter includes an elongated body having a proximal end and a distal end. At least one ablation element is disposed on the body between the proximal end and the distal end and configured to ablate renal tissue to control hypertension. At least one localization sensor is disposed on the body and configured to interact with a magnetic field. The at least one localization sensor aids in determining an appropriate target tissue for ablation. | 2014-09-18 |
20140276734 | BLUNT TIP SURGICAL CUTTING DEVICE AND METHOD - A cutting device includes an elongated shaft extending between a proximal end and a distal end. A lower portion extends from the distal end of the elongated shaft and includes an outer surface and an inner surface spaced apart from the outer surface which together form a blunt end configured as a stop so as to protect adjacent tissue. An upper portion extends from the distal end of the elongated shaft and including an inner surface. The upper portion is configured so as to be disposed opposite the lower portion. A cutting element is disposed between the lower portion and the upper portion and is configured for retractable extension beyond the distal end of the elongated shaft so as to contact tissue. | 2014-09-18 |
20140276735 | Tissue Clamping Features of Surgical Instrument End Effector - An apparatus comprises a body, a shaft assembly, and an end effector. The shaft assembly extends distally from the body. The end effector is in communication with the shaft assembly. The end effector comprises a first jaw and a second jaw. The second jaw comprises a proximal portion and a distal portion. The second jaw is moveable relative to the first jaw between a first position, a second position, and a third position. The second jaw in the first position is open relative to the first jaw. The second jaw in the second position is positioned such that the distal portion is closer to the first jaw than the proximal portion. The second jaw in the third position is parallel the first jaw. | 2014-09-18 |
20140276736 | Surgical Instrument with Partial Trigger Lockout - An end effector comprises a first jaw, a second jaw, a firing beam, and a lockout feature. The second jaw pivots relative to the first jaw from an open position to a closed position. The firing beam has a sharp distal end and translates between the first and second jaws. The firing beam translates from a proximal position to a first distal position to pivot the second jaw to the closed position. The end effector applies bipolar RF energy when the firing beam is in the first distal position. The firing beam then translates to a second distal position to sever tissue captured between the first and second jaws. The lockout feature prevents the firing beam from advancing from the first distal position to the second distal position until the lockout feature is actuated. | 2014-09-18 |
20140276737 | RF ENABLED INFLATABLE BONE TAMP - A device for performing a surgical procedure includes an elongated shaft extending between a proximal end and a distal end. The shaft includes an outer surface and an inner surface. An expandable member is disposed at the distal end of the shaft. The expandable member is configured to receive inflation material. At least one electrode is disposed with the inflatable member. Methods of use are disclosed. | 2014-09-18 |
20140276738 | SURGICAL INSTRUMENT WITH MULTIPLE CLAMPING MECHANISMS - A nested trigger assembly for a surgical instrument may generally comprise a first trigger and a second trigger, wherein the first trigger and the second trigger are movable together on a first stroke of the nested trigger assembly, wherein the second trigger is configured to be biased away from the first trigger after the first stroke and before a second stroke, and wherein the second trigger is configured to be moved toward to the first trigger during the second stroke. A surgical instrument may generally comprise a shaft comprising a proximal end and a distal end, a handle extending from the proximal end, wherein the handle comprises a gripping portion, and a nested trigger assembly extending from the handle. The nested trigger assemble may comprise one of a separable trigger assembly and a divisible trigger assembly. | 2014-09-18 |
20140276739 | MICROWAVE ENERGY-DELIVERY DEVICE AND SYSTEM - A microwave ablation device including a cable assembly configured to connect a microwave ablation device to an energy source and a feedline in electrical communication with the cable assembly. The microwave ablation device further includes a balun on an outer conductor of the feedline, and a temperature sensor on the balun sensing the temperature of the balun. | 2014-09-18 |
20140276740 | Recirculating Cooling System For Energy Delivery Device - An energy delivery device cooling system includes a reservoir connector assembly and an elongate member. The elongate member has first and second lumens in fluid communication with the reservoir. The first lumen includes an outflow port and the second lumen includes a return port each in fluid communication with the reservoir. The device further includes a tubing system having a first end and a second end. The first end connected in fluid communication with the outflow port and the second end in fluid communication with the return port. The second end configured to return a fluid to the reservoir. The tubing system connects to an energy delivery device to cool the fluid. | 2014-09-18 |
20140276741 | PEAK PLASMA BLADE FOR SOFT TISSUE DECOMPRESSION - Cutting device for resecting nerve or soft tissue while reducing or preventing arcing or heating of surrounding tissues are provided. The cutting devices include a probe having a lumen, a distal end and a proximal end, the distal end having a tip and a cutting surface positioned near its tip. The cutting surface has cutting edges configured to receive and conduct pulsed plasma mediated RF discharges. The cutting devices also include a sleeve covering the probe, the sleeve containing at least one aperture configured to expose the cutting surface. Intermediate the probe and the sleeve, some cutting devices include a metal insert that can cover the probe exposing only the cutting edges of the cutting surface. Methods for cutting nerve and/or soft tissue utilizing the cutting devices are also provided. | 2014-09-18 |
20140276742 | FEEDBACK SYSTEMS AND METHODS FOR RENAL DENERVATION UTILIZING BALLOON CATHETER - A renal denervation system includes an ablation catheter and an inflation balloon. The renal denervation catheter is insertable into a renal artery to perform a renal denervation procedure. The inflation balloon is inflatable within the renal artery, wherein one of a blood pressure condition in the renal artery resulting from operation of the inflation balloon and a performance characteristic of the inflation balloon indicates efficacy of the renal denervation procedure. | 2014-09-18 |
20140276743 | METHODS AND DEVICES FOR FLUID ENHANCED MICROWAVE ABLATION THERAPY - Devices and methods for fluid enhanced ablation therapy using microwave antennas are described herein that provide improved heat transfer into a target volume of tissue and improved antenna cooling compared to prior art designs. In one embodiment, fluid can be introduced into a target volume of tissue along with the delivery of therapeutic energy from a microwave antenna positioned within the target volume of tissue. The fluid can become heated by cooling the microwave antenna and, if additional heating of the fluid is desired, a heating element disposed within the microwave antenna can supplementally heat the fluid prior to introduction into the target volume of tissue. | 2014-09-18 |
20140276744 | SURGICAL CUTTING DEVICE - A cutting device includes an elongated shaft that extends between a proximal end and a distal end. A distal arm extends from the distal end of the elongated shaft. The distal arm includes an inner surface defining a cavity and an outer surface defining a blunt tip. At least one proximal arm extends from the distal end of the elongated shaft at a position proximal to the distal arm. The at least one proximal arm has an inner surface defining a cavity including a cutting portion configured to cut tissue. | 2014-09-18 |
20140276745 | STEERABLE CATHETER SYSTEM AND METHOD OF USING SAME - A steerable catheter system is provided including an elongated shaft having a proximal end, a distal end and an outer surface. The outer surface includes at least one cavity configured to facilitate movement of the distal end relative to the proximal end so as to steer the elongated shaft. A catheter tip is attached to the distal end of the shaft. The catheter tip comprises a curved body having at least one RF cutting edge and at least one non-cutting area recessed from the at least one cutting edge. | 2014-09-18 |
20140276746 | FEEDBACK SYSTEMS AND METHODS UTILIZING TWO OR MORE SITES ALONG DENERVATION CATHETER - A renal denervation system includes a renal denervation catheter and a flow determining system. The renal denervation catheter includes a plurality of ablation members positioned at a distal end portion thereof. The renal denervation catheter is insertable into a renal artery. The flow determining system includes a processor and first and second flow determining members spaced apart on the renal denervation catheter. The processor is configured to determine a change in blood flow through the renal artery resulting from a renal denervation procedure using the renal denervation catheter in response to input from the first and second flow determining members. | 2014-09-18 |
20140276747 | SYSTEM AND METHOD FOR DENERVATION - A catheter apparatus for treatment of a human patient is described, the catheter apparatus having a central axis and comprising a shaping structure moveable between a delivery state having a first helical shape, and a deployed state having a second helical shape. The shaping structure is configured to have a reverse taper with a structural diameter that varies over the length of the shaping structure such that the structural diameter of the shaping structure at the proximal end is smaller than the structural diameter of the shaping structure at the distal end. | 2014-09-18 |
20140276748 | Helical Push Wire Electrode - Helical push wire electrodes are provided. The electrodes may create a continuous helical lesion. One or more electrodes may wind around a support section and create a set of helixes having fixed ends and hitches. Pushing or pulling an end of the electrode transforms the electrodes between a delivery configuration and a deployed configuration such that the set of helixes expand or contract axially. Different portions of the electrodes may be surrounded by sleeves. The sleeves may regulate how the wires transform and provide insulation. Various insulation configurations of the electrodes may provide creations of discrete lesions, efficient energy delivery and reduced power consumption. | 2014-09-18 |
20140276749 | CREST-FACTOR CONTROL OF PHASE-SHIFTED INVERTER - A method for controlling an electrosurgical generator includes generating at least one electrosurgical waveform at a selected energy setting through an RF output stage comprising an RF inverter coupled to a power source. The at least one electrosurgical waveform has a duty cycle and a crest factor. The method also includes adjusting a repetition rate of the at least one electrosurgical waveform based on the selected energy setting to regulate the duty cycle of the at least one electrosurgical waveform. The method also includes applying the at least one electrosurgical waveform to tissue through at least one electrode and measuring an output voltage of the at least one electrosurgical waveform. The method also includes supplying a control signal to the RF inverter based on the repetition rate when the output voltage is increasing to regulate the crest factor of the at least one electrosurgical waveform. | 2014-09-18 |
20140276750 | SYSTEMS AND METHODS FOR NARROWBAND REAL IMPEDANCE CONTROL IN ELECTROSURGERY - The electrosurgical systems and associated methods of the present disclosure perform narrowband real impedance control for precise treatment of tissue in electrosurgery. The electrosurgical systems include an electrosurgical generator that includes an output stage configured to generate electrosurgical energy to treat tissue, a plurality of sensors configured to sense voltage and current waveforms of the electrosurgical energy, and a controller coupled to the output stage to control the generated electrosurgical energy. The controller includes a signal processor that (1) determines a complex-valued voltage and a complex-valued current based on the voltage waveform and the current waveform sensed by the plurality of sensors using a plurality narrowband filters, and (2) calculates a real part of an impedance of the tissue using the complex-valued voltage and the complex-valued current. The controller also includes an output controller that controls the output stage based on the calculated real part of the impedance of the tissue. | 2014-09-18 |
20140276751 | SYSTEM CONFIGURED TO PROVIDE CONTROLLED DEPTH OF HEMOSTASIS - An electrosurgical device is provided and includes a handset having a shaft extending therefrom. The electrosurgical device includes a pair of electrodes disposed at a distal end of the shaft. One or more sensors are in operable communication with the pair of electrodes to detect a pressure applied thereto. The amount of electrosurgical energy that is transmitted to the pair of electrodes is proportional to the amount of pressure that is applied to the pair of electrodes and detected by the sensor. | 2014-09-18 |
20140276752 | NERVE ABLATION DEVICES AND RELATED METHODS OF USE - An ablation device is provided for forming one or more lesions on a wall of an artery, such as a renal artery. The device can include an elongate shaft having a proximal end and a distal end. The device may also include a handle disposed at the proximal end, a distal tip including an electrode disposed at the distal end, and one or a plurality of independently expandable splines proximate the distal end. | 2014-09-18 |
20140276753 | SYSTEMS AND METHODS FOR ARC DETECTION AND DRAG ADJUSTMENT - The systems and methods of the present disclosure detect arcing patterns or impedance changes and adjust the level of electrosurgical energy provided to tissue based on the detected arcing patterns or impedance changes. In embodiments, the drag force imposed on the electrode or blade of an electrosurgical instrument may be controlled by adjusting the level of electrosurgical energy based on the detected arcing patterns or impedance changes. The arcing patterns or impedance changes may be detected by sensing voltage and/or current waveforms of the electrosurgical energy and analyzing the sensed voltage and/or current waveforms. The current and/or voltage waveform analysis may involve calculating impedance based on the sensed voltage and current waveforms and calculating changes in impedance over time. The waveform analysis may involve detecting harmonic distortion using FFTs, DFTs, Goertzel filters, polyphase demodulation techniques, and/or bandpass filters. The waveform analysis may involve determining a normalized difference or the average phase difference between the voltage and current waveforms. | 2014-09-18 |
20140276754 | SYSTEM AND METHOD FOR POWER CONTROL OF ELECTROSURGICAL RESONANT INVERTERS - An electrosurgical generator is disclosed. The generator includes an RF output stage configured to generate at least one electrosurgical waveform including a plurality of cycles; at least one sensor coupled to the RF output stage, the at least one sensor configured to measure a voltage and a current of the at least one electrosurgical waveform; and a controller coupled to the at least one sensor and the RF output stage, the controller including a proportional-integral-derivative controller having at least one of voltage limiter or a current limiter, the proportional-integral-derivative controller configured to saturate the RF output stage based on voltage-current characteristics of the RF output stage. | 2014-09-18 |
20140276755 | MEDICAL SYSTEMS AND METHODS FOR MODULATING NERVES - Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a medical device for modulating nerves. The medical device may include an elongate shaft having a distal region. Two or more electrodes may be positioned adjacent to the distal end region of the elongate shaft. A control unit may supply power and control algorithms to the electrodes. The control algorithm may allow the electrodes to be operated simultaneously and individually. | 2014-09-18 |
20140276756 | WALL-SPARING RENAL NERVE ABLATION CATHETER WITH SPACED ELECTRODE STRUCTURES - Systems and methods for performing tissue modulation are disclosed. A nerve modulation assembly may include a guide sheath having a proximal end, a distal end, and a lumen extending therebetween. An actuation member, also having a proximal end and a distal end, extends along a central elongate axis disposed within the lumen. Further, the ablation member disposed at the distal end of the actuation member is configured to be actuated from the proximal end of the guide sheath. In particular, the ablation member includes a radiofrequency based electrode member, and an insulation member disposed circumferentially around the radiofrequency based electrode member. | 2014-09-18 |
20140276757 | FIXED POSITION RF ELECTRODE - In one aspect, a fixed position RF electrode for conducting surgical procedures, includes a main device body detachably connectable to an RF generating system, a first polarized conductor and a second oppositely polarized conductor, a bipolar electrical conduit passing through the main device body that passes RF energy from the RF generating system to the first polarized conductor and the second oppositely polarized conductor, and a bipolar electrode for contacting a surgically operative material. | 2014-09-18 |
20140276758 | OPEN IRRIGATED ABLATION CATHETER - Medical devices and methods for using medical devices are disclosed. An example medical device may include an open-irrigated ablation catheter. The open-irrigated ablation catheter may include a catheter body, an electrode tip body with irrigation ports at a distal end, and a coolant conduit. The distal end of the coolant conduit may extend into a proximal portion of the electrode tip body. Fluid flow from the coolant conduit may be diverted proximally and/or towards the wall of the electrode tip body by one or more openings proximal of a closed distal end of the conduit or by a structure blocking and diverting flow from an open distal end of the conduit. | 2014-09-18 |
20140276759 | OPEN IRRIGATED ABLATION CATHETER WITH PROXIMAL COOLING - Medical devices and methods for using medical devices are disclosed. An example medical device may include an open-irrigated ablation catheter. The open-irrigated ablation catheter may include a catheter body, an electrode tip body with one or more irrigation ports at a distal end, and a proximal insert for providing cooling fluid to a proximal end of the electrode tip body. | 2014-09-18 |
20140276760 | FORCE FEEDBACK DEVICE AND METHOD FOR CATHETERS - An ablation apparatus includes a flexible probe adapted for insertion into a heart of a living subject. The probe has a distally disposed ablation electrode to be brought into contact with a target tissue in the heart, and has facilities for measuring contact force with the target tissue. The apparatus includes a transmitter, operative to transmit an indication of the contact force to a wearable device having an actuator operative to haptically stimulate the operator responsively to the indication. | 2014-09-18 |
20140276761 | ELECTROSURGICAL DEVICE WITH DISPOSABLE SHAFT HAVING TRANSLATING GEAR AND SNAP FIT - An apparatus includes an interface assembly and a shaft assembly. The interface assembly is configured for use with a robotic system and includes a first drive assembly and a mounting plate. The mounting plate includes an opening. The first drive assembly is positioned within the opening such that the first drive assembly is laterally translatable within the opening from a first position to a second position. The shaft assembly is removably coupled with the interface assembly. The shaft assembly comprises an end effector and a first coupling feature. The first drive assembly of the interface assembly actuates the end effector of the shaft assembly. The first coupling feature is longitudinally aligned with the first drive assembly. The first drive assembly engages the first coupling feature of the shaft assembly when the first drive assembly is laterally translated from the first position to the second position. | 2014-09-18 |
20140276762 | ABLATION CATHETERS AND SYSTEMS INCLUDING ROTATIONAL MONITORING MEANS - The present disclosure provides an improved ablation catheter. In particular, the present disclosure provides an improved renal denervation ablation catheter and system including a catheter handle and a means for tracking, monitoring, and/or recording the circumferential angular history of the renal denervation ablation catheter handle. The renal denervation ablation catheters in accordance with the present disclosure are well-suited for use with a renal denervation ablation system that can record the circumferential angular history of the renal denervation catheter handle, and hence the circumferential angular ablation history of the catheter electrode within a vessel, and use this data in combination with other known information to estimate the percent circumferential denervation of the vessel. | 2014-09-18 |
20140276763 | ELECTROSURGICAL INSTRUMENT - An electrosurgical instrument that reduces the amount of fatigue experienced by a physician performing electrosurgery includes a hand piece with a utility conduit connected to the hand piece. The utility conduit can include an electrical cable and a smoke/fluid evacuation hose. The location at which the utility conduit exits the hand piece is selectively adjustable to reduce the resistance to the movement of the electrosurgical instrument created by the weight of the utility conduit. An electrosurgical instrument may also include an extendable shaft that allows for selective adjustment of the reach of the operational capabilities of the instrument. | 2014-09-18 |
20140276764 | Flexible RF Ablation Needle - Embodiments disclosed herein are directed to devices, methods, and systems for the treatment of tissue using energy delivery. Specifically, certain embodiments may be used for the treatment of lung tissue, such as lung nodules, using RF ablation, via a catheter provided with a first electrode attached to a distal end of the catheter, wherein the first electrode is hollow, wherein the first electrode comprises a piercing tip configured to pierce through an airway all and a second electrode received in a movable manner within the first electrode, wherein the second electrode is extendable from the first electrode to form a first extended configuration. | 2014-09-18 |
20140276765 | ABLATION SYSTEM, METHODS, AND CONTROLLERS - Multi-electrode ablation systems, methods, and controllers are described. In one example, a multi-electrode ablation system includes a power supply configured to be coupled to a plurality of electrodes and a controller coupled to the power supply. The controller is configured to determine a thermal gain of each electrode of the plurality of electrodes. For each electrode of the plurality of electrodes, the controller sets a power limit based at least in part on said electrode's determined thermal gain. The power limit establishes a maximum power that may be dissipated through said electrode. | 2014-09-18 |
20140276766 | ABLATION SYSTEM, METHODS, AND CONTROLLERS - Multi-electrode ablation systems, methods, and controllers are described. In one example, a multi-electrode ablation system generally includes a power supply and a controller. The power supply is configured to be coupled to a plurality of electrodes for delivering power to the electrodes. The controller is operable to compare a measured temperature at each electrode to a desired temperature to thereby define a temperature difference for each electrode. The controller is operable to determine, based on the temperature difference, a desired power for each electrode, compare the desired power of one of the electrodes to an actual power delivered to the one of the electrodes to define a power difference, and adjust the actual power delivered by the power supply to the one of the electrodes based on the power difference. | 2014-09-18 |
20140276767 | ABLATION SYSTEM, METHODS, AND CONTROLLERS - In a multi-electrode ablation system, method, and controller, a power supply is configured to be coupled to a plurality of electrodes, and a controller is coupled to the power supply. The controller is configured to couple an output voltage of the power supply to the plurality of electrodes, and for each electrode of the plurality of electrodes, measure a temperature associated with the electrode, and determine a thermal gain of each electrode of the plurality of electrodes. | 2014-09-18 |
20140276768 | ELECTROSURGICAL SYSTEMS - An electrosurgical instrument can selectively provide electrosurgical energy to an energizable electrode. The instrument can include an interface configured to issue one or more waveform command signals corresponding to a selected therapeutic result; waveform generation circuitry configured to deliver in response to the one or more wave form command signals, a corresponding one or more waveforms selected from a first, a second, and a third waveform, each of the first, second and third waveforms being different from the other of the first, second and third waveforms. The instrument can include a variable output voltage supply configured to supply a selected electrical current to a corresponding output, and an output driver circuitry configured to combine at least one or more of the waveforms with the respective high-voltage electrical current to generate an electrosurgical current suitable for achieving the therapeutic result when applied to a treatment site by the energizeable electrode. | 2014-09-18 |
20140276769 | DETECTING IMPROPER ENERGY TRANSMISSION CONFIGURATION IN MEDICAL DEVICE SYSTEM - A medical device system may be configured to detect an improper energy transmission configuration therein. The condition may be detected by way of a detection of a condition where an energy-transmitting electrode of the medical device system becomes too close to or becomes in contact with an object resulting in an inability of the electrode to properly transmit energy. For example, if the energy-transmitting electrode is a first electrode configured in its operational state to transmit energy to bodily tissue adjacent the first electrode, but the first electrode is inadvertently contacting a second electrode, such contact may cause at least some energy transmitted by the first electrode to follow an unintended path away from its intended path to the adjacent tissue. Such a condition may be detected based at least upon an analysis of information acquired from a sensing device system. | 2014-09-18 |
20140276770 | Electrosurgical Handpiece - One embodiment of the present invention is a electrosurgical tool which includes a electrically powered handpiece with a detachable electrode at one end and a power connection at the other. The handpiece includes a feedback controller incorporated in tool to adjust operational characteristics of the electrosurgical tool. | 2014-09-18 |
20140276771 | SYSTEMS AND METHODS FOR CONTROLLED TISSUE ABLATION - The invention describes methods for safely delivering ablation energy to a tissue, e.g., thrombus, in need of ablation therapy. The method uses a catheter adapted for IVUS imaging, ablation, and impedance measurements to monitor the impedance of a tissue receiving ablation energy. In an embodiment, a user may view an IVUS image of the tissue with impedance measurements to determine if it is safe to deliver additional energy. In another embodiment, a processor is configured to determine if it is safe to deliver additional ablation energy based upon the impedance measurement. | 2014-09-18 |
20140276772 | COMBINATION ELECTROSURGICAL DEVICE - An electrosurgical system comprising: a handpiece including: a first power connector; a second power connector; and one or more moveable members having a first position and a second position; and an activation circuit having a first switch state and a second switch state, wherein the activation circuit in the first switch state does not allow either a first electrosurgical therapy signal or a second electrosurgical therapy signal to exit the handpiece; wherein when the activation circuit is in the second switch state and the one or more moveable members are in the first position the activation circuit allows the first electrosurgical therapy signal to exit the handpiece so that a first therapy current extends between the first power connector and the second power connector, and wherein when the activation circuit is in the second switch state and the one or more moveable members are in the second position the activation circuit allows the second electrosurgical therapy signal to exit the handpiece so that a second therapy current extends between the first power connector and the second power connector. | 2014-09-18 |
20140276773 | ABLATION SYSTEM, METHODS, AND CONTROLLERS - In a multi-electrode ablation system, method, and controller, the controller is configured to measure a first current through a common return path when a first voltage is applied by a power supply to a first electrode of a plurality of electrodes, measure a second current through the common return path when a second voltage is applied by the power supply to a second electrode of the plurality of electrodes, measure a third current through the common return path when a third voltage is applied by the power supply concurrently to the first electrode and the second electrode, and determine a common path impedance based at least in part on the first voltage and the first current, the second voltage and the second current, and the third voltage and the third current. | 2014-09-18 |
20140276774 | TISSUE DISSECTION DEVICE AND RELATED METHODS OF USE - Embodiments of the present disclosure include a method for treating tissue. The method may include delivering a medical device through a channel of an endoscopic device, wherein the medical device may include an elongate member, a cap coupled to a distal end of the elongate member and having a cavity, and an electrically-conductive tool extending into the cavity of the cap. The method may also include extending a portion of the medical device out of the channel of the endoscopic device and to the tissue, drawing a portion of the tissue into the cavity of the cap, electrically activating the tool to pierce the portion of the tissue, and cutting the tissue by moving the medical device along a plane of the tissue. | 2014-09-18 |
20140276775 | IDENTIFICATION OF SURGICAL SMOKE - A method includes assessing tumor margins and discriminating between tumor and non-tumor tissues by analyzing the compositional make-up of smoke produced during cautery resection of tissues. | 2014-09-18 |
20140276776 | ELECTROSURGICAL DEVICE WITH DISPOSABLE SHAFT HAVING CLAMSHELL COUPLING - A surgical device for operating on tissue comprises an end effector, a disposable shaft assembly, and an interface assembly. The shaft assembly comprises an articulation section operable to provide deflection of the end effector relative to the longitudinal axis of the shaft. The interface assembly comprises a plurality of pivotable base sections. The interface assembly comprises a plurality of drive components associated with drive shafts driven by an external system and each drive component is associated with a section of the base. The drive components are operable to cause rotation of one or both of the shaft or end effector and movement of components of the end effector. The drive components are further operable to cause articulation of the articulation section. The base sections are pivotable toward each other to couple with the shaft assembly or away from each other to disengage the shaft assembly. | 2014-09-18 |
20140276777 | ELECTROSURGICAL INSTRUMENT WITH MULTI-STAGE ACTUATOR - An apparatus comprises an end effector, a shaft, and a handpiece. The end effector is operable to manipulate tissue. The shaft is in communication with the end effector. The shaft includes a firing beam operable to actuate a portion of the end effector. The handpiece comprises a pivoting trigger that is operable to distally advance a firing beam driver to advance the firing beam. The handpiece also comprises an activation button and lockout assembly. The lockout assembly is movable between a locked and unlocked state. In the locked state, the lockout assembly blocks a portion of the firing beam driver from advancing. In the unlocked state, the lockout assembly allows the firing beam driver to advance. The activation button switches is operable to unlock the lockout assembly. | 2014-09-18 |
20140276778 | FLEXIBLE MESH ABLATION DEVICE - A flexible mesh ablation device for ablating tissue in a body lumen. The flexible mesh ablation device includes a flexible mesh with at least one conductor on an exterior surface of the flexible mesh. When the flexible mesh is compressed axially it expands radially to contact the inner surface of the body lumen and conform to the shape of the body lumen. Power is applied to the conductor ablating tissue proximate the conductor. | 2014-09-18 |
20140276779 | CATHETER WITH NEEDLES FOR ABLATING TISSUE LAYERS IN VESSEL - A catheter has a catheter body and a distal tip section with needles that are positioned radially to extend outside of the distal tip section to pierce and penetrate tissue layers of a vessel or tubular region. The needles are supported in a retracted position inside the distal tip section on an elongated support member. For deployment, the needles are lifted and a portion thereof pushed through openings in the distal tip section by an actuator that is longitudinally slidable on the elongated support member. The actuator has a tapered end to help lift the needle onto the actuator. In another embodiment, an inflatable balloon member with needles is movable between retracted and deployed positions. | 2014-09-18 |
20140276780 | CATHETER ADAPTED FOR USE WITH GUIDE WIRE FOR ACCESSING VESSELS - An ablation catheter adapted for use with a guide wire has a 3-D shaped portion that carries ring electrodes for ablating a vessel or tubular region, including the renal artery. The 3-D shaped portion, for example, a helical portion, enables the ring electrodes to contact an inner surface of the vessel at a plurality of locations at different depths along the vessel to form a conduction block without forming a closed conduction loop which would otherwise increase the risk of stenosis of the vessel. In one embodiment, the catheter has a lumen with entry and exit ports to allow the guide wire to pass through the lumen but bypass the 3-D shaped portion. In another embodiment, the catheter has outer bands providing side tunnels through which the guide wire can pass through. | 2014-09-18 |
20140276781 | METHOD AND SYSTEM FOR DELIVERING A TISSUE TREATMENT USING A BALLOON-CATHETER SYSTEM - A balloon catheter system configured to deliver one or more stimulation signal to a tissue comprises an expandable balloon disposed around a distal portion of a catheter, a plurality of electrodes, and an external sheath having a lumen sized to slidably accommodate the expandable balloon, catheter and the plurality of electrodes. The plurality of electrodes are flexibly distributed along a balloon length and are configured to deliver the stimulation signals to the tissue. The plurality of electrodes may preferably be disposed on a flexible frame coupled externally of the expandable balloon and in sliding engagement to the balloon during inflation and deflation. The flexible frame may further comprise one or more sensors. The external sheath is made of a non-conductive material and is configured to prevent delivery of the stimulation signals by the electrodes disposed along an inoperable length of the expandable balloon when the balloon is inflated. | 2014-09-18 |
20140276782 | CATHETER SYSTEM - A catheter system that includes a catheter element sized to pass through blood vessels to an organ of an animal. The distal end portion of the catheter element is capable of assuming and maintaining a curved configuration. A medical element is disposed with respect to the catheter element so as to interact therewith, the medical element being capable of assuming and maintaining a curved configuration. At least one ablating or mapping tool is disposed on the distal end portion of either the medical element or the catheter element, or both, for either mapping or ablating tissue in the organ when the distal end portion of the catheter system is disposed in the organ. The catheter system can include a hand grip for controlling the catheter system. | 2014-09-18 |
20140276783 | Multi-Electrode Apposition Judgment Using Pressure Elements - Apparatus and methods for determining positioning of a energy delivery element include deploying a energy delivery element at a treatment site proximal to a vessel wall; using a multi-region pressure sensing apparatus to sense pressures applied in a plurality of directions about the energy delivery element; and determining an orientation of the energy delivery element based on the pressures measured in the plurality of directions about the energy delivery element. | 2014-09-18 |
20140276784 | SYSTEM AND METHOD FOR BIOFILM REMEDIATION - A method for removing biofilm from a lumen of a medical implant is disclosed. The method includes the steps of inserting a plasma applicator into a lumen defined in a medical implant, the lumen having a proximal end portion and a distal end portion having an opening therein, positioning the plasma applicator adjacent a biofilm formation, generating a selectively reactive plasma effluent at the plasma applicator and directing the selectively reactive plasma effluent at the biofilm formation. | 2014-09-18 |
20140276785 | ELECTROSURGICAL INSTRUMENT - An electrosurgical instrument comprising a first arm carrying at least a first and optionally a second and third electrode, and a second arm opposing the first arm, the second arm carrying one of a nonconductor element or one or more conductive elements. | 2014-09-18 |
20140276786 | OFFSET FORCEPS - An electrosurgical device comprising: forceps including: (i) a first working arm having a contact surface and (ii) a second working arm having a contact surface; wherein the forceps has a first electrical configuration where the contact surface of the first working arm and the contact surface of the second working arm are substantially opposite each other so that the contact surfaces of the forceps can be used to grip an item between the working arms and so that the forceps is configured to deliver a first therapy current through the first working arm, the second working arm, or both; and wherein the forceps has second electrical configuration where the contact surface of the first working arm and the contact surface of the second working arm are askew relative to each other and an electrode edge is formed on at least one side of the forceps so that a second therapy current extends from the electrode edge. | 2014-09-18 |
20140276787 | DEFLECTABLE MEDICAL DEVICES - A deflective medical device including a catheter shaft having a distal end, and an ablation electrode disposed at the distal end of the catheter shaft. A deflection body is provided within the catheter shaft, and the deflection body includes a longitudinally extending spine. Multiple slots are formed in the deflection body, and the slots define a group of ribs. A flex member is disposed distal to the deflection body, and an intermediate region is defined between the deflection body and the flex member. A deflection mechanism is coupled to the intermediate region, which includes a retaining member, a collar, and a pull wire coupled to the collar. | 2014-09-18 |
20140276788 | ABLATION CATHETER HAVING ELECTRONIC DEVICE DISPOSED WITHIN A LUMEN - The present disclosure relates generally to catheter devices, including irrigated and non-irrigated ablation catheters. More specifically, this disclosure relates to irrigated ablation catheters including an irrigation lumen having at least one electronic device at least partially disposed therein. In many embodiments, the irrigation lumen further includes at least one sideport. In some embodiments, the electronic device has a distal end extending out of the irrigation lumen and into an electrode tip assembly. In some embodiments, a proximal end of the electronic device extends through the sideport in the irrigation lumen. | 2014-09-18 |
20140276789 | METHODS AND APPARATUSES FOR REMODELING TISSUE OF OR ADJACENT TO A BODY PASSAGE - Medical devices and methods for making and using the same are disclosed. An medical device may include a medical device for renal nerve ablation. The medical device may include a catheter shaft having a distal region. An expandable balloon may be coupled to the distal region. An electrode assembly may be coupled to the balloon. The electrode assembly may include a first electrode pad including one or more electrodes. The first electrode pad may have a first lead-in edge, a first protruding edge, and a first transition region with a continuously changing curvature disposed between the first lead-in edge and the first protruding edge. | 2014-09-18 |
20140276790 | DEVICES FOR TISSUE SEPARATION AND RELATED METHODS OF USE - The present disclosure is directed to a medical instrument. The medical instrument may include a shaft having a distal end configured to cauterize tissue. An expandable member may be positioned adjacent the distal end of the shaft. The expandable member may be configured for deployment between a collapsed configuration and an expanded configuration. | 2014-09-18 |
20140276791 | Treatment Device With Electrode Contact Surface Configured for Enhancing Uniformity of Electrical Energy Distribution and Associated Devices and Methods - Treatment devices with electrode contact surfaces configured for enhancing uniformity of electrical energy distribution are provided. In one embodiment, a treatment device includes a tubular electrode having a wall, a contact surface defined by the wall, and cut shapes at least partially extending through the wall. The tubular electrode is configured to transmit electrical energy to a treatment site within a body lumen via the contact surface, and the individual cut shapes are configured to draw a portion of the electrical energy toward an interior region of the contact surface. A shaft having a distal end portion operably coupled to the tubular electrode can locate the tubular electrode at the treatment site. | 2014-09-18 |
20140276792 | FLUID DELIVERY SYSTEM AND METHOD FOR TREATMENT - A treatment system includes a fluid cooling supply system for chilling and delivering liquid coolant to a patient. The fluid cooling supply system includes a cooling device and a heat exchanger device. The heat exchanger device is biased to the cooling device and is in fluid communication with a treatment device in a patient. The fluid cooling supply system includes at least one biasing mechanism to provide a given biasing force between the heat exchanger device and the cooling device to effectuate and improve heat transfer. The liquid coolant may be circulated through an energy delivery device positioned in an airway of a patient to preserve tissue. The system is controlled to circulate liquid coolant at a given temperature and pressure for a selected amount of time during pulmonary treatment of a patient. | 2014-09-18 |
20140276793 | HANDPIECE FOR AN ABLATION DEVICE HAVING TOOL PIECE WITH MULTIPLE ORIENTATIONS AND METHOD FOR RECONFIGURING HANDPIECE - Handpiece for an ablation device has a handle assembly and a tool piece with a plurality of operative elements, each operative for a different ablative purpose and for reconfiguring a handpiece for an ablation device. The handle assembly is configured to repositionably hold the tool piece in first and second orientations by the first and second portions of the handle assembly. The handpiece presents a first of the plurality of operative elements with the tool piece being positioned in the first orientation and wherein the ablation device presents a second of the plurality of operative elements with the tool piece positioned in the second orientation. | 2014-09-18 |
20140276794 | ELECTROSURGICAL INSTRUMENT - An electrosurgical instrument comprising a first arm carrying at least a first and optionally a second and third electrode, and a second arm opposing the first arm, the second arm carrying one of a nonconductor element or one or more conductive elements. | 2014-09-18 |
20140276795 | COMBINATION ELECTROSURGICAL DEVICE - An electrosurgical device comprising: (a) forceps including: (i) a first working arm and (ii) a second working arm; (b) a blade electrode; wherein the electrosurgical device is capable of being switched between a first electrical configuration so that the electrosurgical device delivers a first therapy current through the first working arm, the second working arm, or both, and a second electrical configuration so that the electrosurgical device delivers a second therapy current through the blade electrode: and wherein the first working arm and the second working arm of the forceps are immobilized in the second electrical configuration so that both the forceps and the first therapy current are disabled. | 2014-09-18 |
20140276796 | COMBINATION ELECTROSURGICAL DEVICE - An electrosurgical system comprising: a handpiece including: (a) a first working arm, (b) a second working arm, and (c) a blade electrode; and an activation circuit having a first switch state and a second switch state, wherein a therapy current is conducted between the first working arm and the second working arm when the activation circuit is in the second switch state and the handpiece is in a first position; wherein the therapy current is conducted between the blade electrode, the first working arm, the second working arm, or a combination thereof and an adjacent handpiece component when the activation circuit is in the second switch state and the handpiece is in a second position; and wherein the therapy current is not conducted when the activation circuit is in the first switch state. | 2014-09-18 |
20140276797 | COMBINATION ELECTROSURGICAL DEVICE - An electrosurgical system comprising: a handpiece including: (a) a first power connector; (b) a second power connector; and (c) one or more moveable members having a first position and a second position; and an activation circuit having a first switch state and a second switch state, wherein the activation circuit in the first switch state does not allow either a first electrosurgical therapy signal or a second electrosurgical therapy signal to exit the handpiece; wherein when the activation circuit is in the second switch state and the one or more moveable members are in the first position the activation circuit allows the first electrosurgical therapy signal to exit the handpiece so that a first therapy current extends between the first power connector and the second power connector, and wherein when the activation circuit is in the second switch state and the one or more moveable members are in the second position the activation circuit allows the second electrosurgical therapy signal to exit the handpiece so that a second therapy current extends between the first power connector and the second power connector. | 2014-09-18 |
20140276798 | HAND SWITCHED COMBINED ELECTROSURGICAL MONOPOLAR AND BIPOLAR DEVICE - An electrosurgical instrument connectivity system providing monopolar and bipolar plugs each having a plurality of conductors which allow for use of combination monopolar/bipolar electrosurgical devices with industry standard electrosurgical generator outlets. | 2014-09-18 |
20140276799 | COMBINATION ELECTROSURGICAL DEVICE - An electrosurgical device: forceps having: a first working arm, a second working arm, wherein the electrosurgical device has a first electrosurgical configuration where the first working arm and the second working arm are in an opposed position so that the forceps deliver a first therapy current that flows between the first working arm and the second working arm; and wherein the electrosurgical device has a second electrosurgical configuration when the first working arm, the second working arm, or both are repositionable relative to each other so that the first working arm is extended with respect to the second working arm or vice versa and a second therapy current is delivered from the first working arm to a remote electrode. | 2014-09-18 |
20140276800 | COMBINATION ELECTROSURGICAL DEVICE - An electrosurgical system comprising: a handpiece including: a first working arm, a second working arm, and an activation circuit having a first switch state and a second switch state, wherein a therapy current is conducted between the first working arm and the second working arm when the activation circuit is in the second switch state and the handpiece is in a first position; wherein the therapy current is conducted between the first working arm or the second working arm, and an adjacent handpiece component when the activation circuit is in the second switch state and the handpiece is in a second position; and wherein the therapy current is not conducted when the activation circuit is in the first switch state. | 2014-09-18 |
20140276801 | ELECTROSURGICAL SYSTEMS AND METHODS - An electrosurgical device can have a housing and an electrode defining an energizable surface at least partially positioned externally of the housing. The electrode can move longitudinally relative to the housing. A shank of the electrode can be positioned within the housing and configured to urge against an energizable element in the housing. The energizable element can have a longitudinally movable electrical coupler configured to electrically couple with the shank portion when the shank portion urges against the energizable element. Related methods are also disclosed. | 2014-09-18 |
20140276802 | ROTATABLE CUTTING INSTRUMENT AND METHOD - A surgical instrument includes a first member having an inner surface defining a first passageway. A second member is disposable within the first passageway and movable relative to the first member. The second member defines a longitudinal axis and extends between a first end and a second end configured to engage tissue. The second end includes a first surface configured for a non-penetrating engagement with the tissue and a second surface including at least two spaced apart cutting members extending axially from the first surface. The cutting members are rotatable to excise a portion of the tissue. Systems and methods are disclosed. | 2014-09-18 |
20140276803 | ELECTROSURGICAL INSTRUMENT WITH A KNIFE BLADE STOP - An electrosurgical forceps is provided with a shaft that extends from a housing of the electrosurgical forceps. An end effector assembly operably coupled to a distal end of the shaft includes a pair of first and second jaw members having proximal and distal ends. One or both of the first and second jaw members is movable from an open configuration for positioning tissue therebetween, to a clamping configuration for grasping tissue therebetween. A knife blade assembly includes a knife blade that is translatable within the first and second jaw members when the first and second jaw members are in the clamping configuration. The knife blade assembly includes a knife blade stop configured to contact at least a portion of the proximal end of the second jaw member when the first and second jaw members are in the open configuration to limit translation of the knife blade assembly. | 2014-09-18 |
20140276804 | OFFSET FORCEPS - An electrosurgical device comprising: forceps including: (i) a first working arm having a contact surface and (ii) a second working arm having a contact surface; wherein the forceps has a first electrical configuration where the contact surface of the first working arm and the contact surface of the second working arm are substantially opposite each other so that the contact surfaces of the forceps can be used to grip an item between the working arms and so that the forceps is configured to deliver a first therapy current through the first working arm, the second working arm, or both; and wherein the forceps has second electrical configuration where the contact surface of the first working arm and the contact surface of the second working arm are askew relative to each other and an electrode edge is formed on at least one side of the forceps so that a second therapy current extends from the electrode edge. | 2014-09-18 |