Class / Patent application number | Description | Number of patent applications / Date published |
623100180 | Having shape memory | 62 |
20080221662 | Endoluminal Prosthesis - An endoluminal prosthesis, comprising a tubular body, said tubular body developing along a longitudinal axis, said tubular body comprising a plurality of serpentines, which develop along a substantially circumpherential direction, each of said serpentines comprising arm portions of a preset width transversal to their main longitudinal extension, and bend portions joining two subsequent arms, at least one bridge, having a main longitudinal extension, connecting two adjacent serpentines, wherein the bends facing an adjacent serpentine are circumpherentially staggered relative to the opposite bends of the adjoining serpentine, both when the prosthesis is collapsed and when the prosthesis is expanded or partially expanded, wherein the at least one bridge connecting adjacent serpentines extends substantially straight, and wherein the at least one bridge has a width transversal to its main longitudinal direction of a greater value than the arm width. | 09-11-2008 |
20080221663 | Vascular prosthesis and methods of use - An implantable vascular prosthesis is provided for use in a wide range of applications wherein at least first and second helical sections having alternating directions of rotation are coupled to one another. The prosthesis is configured to conform to a vessel wall without substantially remodeling the vessel, and permits accurate deployment in a vessel without shifting or foreshortening. | 09-11-2008 |
20080281405 | Highly convertible endolumenal prostheses and methods of manufacture - Endolumenal prostheses that readily and extensively convert from a delivery configuration to a deployed configuration are disclosed. Endolumenal prostheses may be fabricated from one or more shape memory polymers, a high modulus elastomer, a polymer that is both elastomeric and exhibits shape memory behavior, a hydrogel, or some combination thereof. Polymers used to fabricate the prostheses are selectively synthesized to exhibit desired characteristics such as crystallinity, strain fixity rate, strain recovery rate, elasticity, tensile strength, mechanical strength, cross-linking density, extent physical cross-linking, extent of covalent cross-linking, extent of interpenetrating networks, rate of erosion, heat of fusion, crystallization temperature, and acidity during erosion. The endolumenal prostheses convert to the deployed configuration following delivery to a treatment site, upon exposure to an initiator either present within the body naturally or introduced into the body. | 11-13-2008 |
20080306583 | HYBRID BALLON EXPANDABLE/SELF-EXPANDING STENT - A stent comprises a tubular member having openings therein and having a plurality of interconnected members and one or more frangible restraining members. The frangible restraining members break upon partial expansion of the stent. Thereafter, the stent self-expands. | 12-11-2008 |
20080312733 | SHAPE MEMORY POLYMERIC STENT - An implantable, radially distensible stent includes a plurality of helically wound elongate members. The members include an overlapping portion having a longitudinal extent, opposed and convexly rounded sides defining a width of the members and opposed luminal and exterior surfaces. The members include shape memory polymer. The side of one elongate member slidingly overlaps the side of an adjacent elongate member to form a self-supporting wall structure of a stent. The stent wall is self-supporting without other support structure incorporated into or abutting the elongate members. Further, the shape memory polymer may comprise a biodegradable or bioabsorbable elements. | 12-18-2008 |
20090005857 | Lesion Specific Stents, Also for Ostial Lesions, and Methods of Application - A balloon or dilatation activated stent particularly for use in a body vessel for specific lesions, particularly in the region of the ostium of a vessel or a bifurcation featuring at least two different stent characteristics ( | 01-01-2009 |
20090018644 | Boron-Enhanced Shape Memory Endoprostheses - An endoprosthesis comprises a member capable of supporting a body passageway. The member has a surface region overlying a bulk region, and comprises a shape memory alloy and boron. The concentration of boron in the surface region is greater than the concentration of boron in the bulk region. | 01-15-2009 |
20090036975 | SELF-SENSING STENTS, SMART MATERIALS-BASED STENTS, DRUG DELIVERY SYSTEMS, OTHER MEDICAL DEVICES, AND MEDICAL USES FOR PIEZO-ELECTRIC MATERIALS - A medically implantable stent comprising at least one piezo-electric material may be active, such as by one or more of: delivering an anti-coagulant or other therapeutic effect to a patient in which it is implanted; powering itself; and/or sending an outbound electronic signal to a remote device. When a stent can send such an outbound signal, a physician may non-invasively ascertain the condition of the tissue near the stent. | 02-05-2009 |
20090062906 | Stent with autonomic function - To provide a stent which holds various performances such as deliverability, prevention of restenosis, flexible shape conformability, and so on and is therefore adaptable not only to a bile duct but also to a blood vessel system such as a tortuous coronary artery substantially without causing restenosis. | 03-05-2009 |
20090248140 | STENT GEOMETRY FOR IMPROVED FLEXIBILITY - A stent comprises one or more circumferential serpentine bands and having alternating peak portions and trough portions. The peak portions include shorter peak portions and longer peak portions. The longer peak portions are of a longitudinal extent greater than the shorter peak portions. The longer peak portions include first bent peak portions which extend in a first direction non-parallel to the longitudinal axis of the stent and second bent peak portions which extend in a second direction non-parallel to the longitudinal axis of the stent. Each first bent peak portion is circumferentially adjacent to one second bent peak portion which points toward the first bent peak portion and to one second bent peak portion which points away from the first bent peak portion. Adjacent first and second bent peak portions which point toward one another are separated one from the other by at least one shorter peak portion. | 10-01-2009 |
20090264985 | Branch Vessel Suture Stent System and Method - A branch vessel suture stent system and method including a branch vessel suture stent having a stent body having a first end, a second end, and a central axis, the first end having a first periphery; and shape memory hooks disposed about the first periphery, each of the shape memory hooks being attached to the first periphery at an attachment point, the shape memory hooks being elongated in a stressed state and looped in a parent state, each of the shape memory hooks defining a loop plane in the parent state. The shape memory hooks are substantially parallel to the central axis in the stressed state, and the first periphery at the attachment point for each of the shape memory hooks is substantially orthogonal to the loop plane for each of the shape memory hooks in the parent state. The delivery system allows the main body of the branch device to expand while maintaining the hooks in an undeployed configuration using individual hypotubes. Then once the body of the suture stent has expanded allowing the suture stent shape memory hooks to be released and engage the main graft body and/or surrounding tissue. | 10-22-2009 |
20090281616 | VASCULAR PROSTHESIS - A vascular endoprosthesis ( | 11-12-2009 |
20090287296 | ATRAUMATIC PROSTHETIC HEART VALVE PROSTHESIS - An atraumatic heart valve prosthesis includes a prosthetic valve coupled to an expandable anchoring structure including a outflow portion configured to taper inwardly in a distal direction towards a central axis of the prosthesis. By this configuration, the distal end of the anchoring structure imparts less force upon the vessel wall (e.g., the aortic tunica intima) during continued expansion and contraction of the heart. The expandable anchoring structure can be balloon expandable or self-expanding. | 11-19-2009 |
20090306767 | SHAPE MEMORY DEVICES - The present invention concerns shape memory devices, methods of producing same and the use of these materials. | 12-10-2009 |
20100016952 | Process For Inducing A Two-Way Shape Memory Effect In A Device Formed Of A Shape Memory Alloy And A Device Made By The Process - A process for inducing a two-way shape memory effect in a device forward of a shape memory alloy and a device made by the process are disclosed. The two-way memory effect occurs in the device in a temperature range of between about 5° C. to 25° C. wherein the training process is based on B2←→R phrase transformations. An R-phase formation or reorientation takes place in the device under stress whereupon the R-phase transforms into stress induced martenite. The device is subjected to thermocycling. | 01-21-2010 |
20100030321 | MEDICAL DEVICE INCLUDING CORRUGATED BRAID AND ASSOCIATED METHOD - Embodiments of the present invention provide medical devices for treating a target site within the body and associated methods for fabricating and delivering medical devices. According to one embodiment, a medical device includes a tubular structure having proximal and distal ends and a side wall extending therebetween. At least a portion of the side wall can have a corrugated surface. The side wall further includes at least one layer of a metallic fabric configured to be compressed and heat set to define the corrugated surface. The tubular structure may comprise an expanded shape, and may be configured to be constrained to a smaller diameter than the expanded shape for delivery within a catheter to a target site and to assume the expanded shape upon release from the catheter. | 02-04-2010 |
20100100170 | SHAPE MEMORY TUBULAR STENT WITH GROOVES - An implantable, radially distensible stent includes a tubular structure having opposed open ends. The wall of the stent is made from a shape memory polymeric material. Grooves may be disposed within an outer surface of stent wall to improve flexibility and drainage of the stent. | 04-22-2010 |
20100211163 | COLLAPSIBLE STENT - A stent suitable for the repair of lesions in bifurcated blood vessels is provided, having a deformable end portion such that a free end of the end portion can be aligned with the surface of an abutting stent or angioplasty balloon in a main branch of the bifurcated vessel. A method of blood vessel repair using this stent is also provided. | 08-19-2010 |
20100228340 | STENT AND METHOD FOR DETERMINING THE POSITION OF A STENT - A method for determining the position of a stent within a body, comprising the steps of: providing a 3D dataset of voxels representing a 3D image containing the stent;
| 09-09-2010 |
20100234937 | Recoverable Valve Stent - A recoverable, safe and reliable valve stent for unidirectional flow of human lumen which can be implanted temporarily or for a long term and is used in the interventional therapy so as to obstruct from anisotropic flow, in the case of lung diseases. It comprises a cylindrical stent made up of memory alloy material. In particular, an elastic diaphragm is arranged inside the cylindrical stent and at least one gap is arranged on the diaphragm so that the spring piece is divided into a bendable section. One end of the cylindrical stent is provided with a fixed rear clip which is used to fix the alloy material making up the cylindrical stent. The rear clip is provided with screwthreads which can be connected with the conveyor. The stent in the present invention is in a structure without hook body, so the stent can be accurately positioned, adjusted and placed or recovered in double directions with strong anti-backflow ability. | 09-16-2010 |
20100268327 | Mobile External Coupling for Branch Vessel Connection - An endovascular prosthesis includes a tubular body and a mobile external coupling. The tubular body includes a graft material and stents coupled thereto, a forms a lumen therethrough. The mobile external coupling extends outwardly from the tubular body. The mobile external coupling includes a graft material and is generally frustoconically shaped. The mobile external coupling includes a base coupled to the tubular body, a top spaced from the tubular body, and a coupling lumen disposed between the base and the top, wherein the coupling lumen is in flow communication with the body lumen. The coupling graft material is a woven fabric with warp yarn which run generally parallel to a longitudinal axis of the mobile external coupling including a shape memory material. | 10-21-2010 |
20100280594 | Antithrombotic Neurovascular Device Containing a Glycoprotein IIB/IIIA Receptor Inhibitor for The Treatment of Brain Aneurysms and/or Acute Ischemic Stroke, and Methods Related Thereto - Disclosed is an antithrombotic neurovascular device useful for the treatment of brain aneurysms and/or acute ischemic stroke. The device comprises a mechanical structure, which may be a stent, stent-like structure, or flow diverter, and a drug-eluting coating. This device is designed for local delivery of antiplatelet medication to the site of device implantation in order to improve outcomes for the population of brain aneurysm and/or acute ischemic stroke patients currently being treated with stents, and for use with patients presenting with ruptured aneurysms, in whom systemic dual antiplatelet therapy is contraindicated. The coating comprises an antiplatelet drug, preferably, a GPIIb/IIIa receptor inhibitor, more preferably, abcixmab, and optionally comprises a polymeric binder that functions as a drug modulating polymer. Also disclosed are methods for producing the antithrombotic neurovascular device, and using the device for the treatment of brain aneurysms and/or acute ischemic stroke. | 11-04-2010 |
20110046719 | Luminal Endoprosthesis For the Occlusion of an Aneurysm and Method of Manufacturing Such an Endoprosthesis - A luminal endoprosthesis for treating aneurysms, particularly aneurysms located at an arterial bifurcation. One feature of the endoprosthesis is a tubular armature that can expand radially from a compressed state to an expanded state. A further feature of the endoprosthesis, when in the expanded state, is a lenticular head whom axis coincides with that of the tubular armature, and which can be inserted into an aneurysm pocket. A method of manufacturing such an endoprosthesis is also described. | 02-24-2011 |
20110046720 | Apparatus and Method for Creating Arteriovenous Fistulas - Apparatus ( | 02-24-2011 |
20110257728 | Catheter-Based Annuloplasty System and Method - A catheter-based annuloplasty system for use in repairing a heart valve having leaflets and a valve annulus, includes a delivery catheter having a proximal end and a distal end, and an expandable stent disposed on the distal end of the catheter. An adjustable annuloplasty ring is disposed on the expandable stent and is configured to expand and contract in response to expansion and contraction of the stent. | 10-20-2011 |
20120035711 | ENHANCING PERFUSION BY CONTRACTION - Apparatus and methods are described including a mechanical support element that is placed inside a first vein of a subject. At least one electrode disposed on the mechanical support element is placed inside the first vein, in a vicinity of a site upstream of a bifurcation with a second vein of the subject. A control unit enhances downstream blood flow from the first vein by driving the at least one electrode to divert blood downstream into the second vein by constricting the first vein at the upstream site, by driving the at least one electrode to apply a current to the vicinity of the site. The mechanical support element prevents the first vein from collapsing by providing mechanical support to the vein. Other embodiments are also described. | 02-09-2012 |
20120101568 | DEVICE FOR REGULATING BLOOD - An implantable device for regulating blood flow through a blood vessel comprising an elongated support dimensioned and configured to be implanted in a blood vessel. The support includes a linking member linking axially spaced apart portions to one another. A valve membrane extends between the axially spaced apart support portions and includes first region folded over the first linking member and attached thereto and a second region adjacent the first region and unattached to the first linking member. The second region is movable between a first position to enable blood flow and a second position to inhibit blood flow. | 04-26-2012 |
20120136429 | DEVICE FOR REGULATING BLOOD FLOW - An implantable device for regulating blood flow through a blood vessel includes an elongated support. The support includes axially spaced apart first and second substantially annular support portions, and an x-shaped linking member linking the axially spaced apart portions to one another. The device also includes a valve membrane extending between the axially spaced apart support portions and having an upper portion, a lower portion and an intermediate portion. The valve membrane includes a first region and a second lower region. The first region is folded over the linking member for attachment and the second region is adjacent the first region and unattached to the linking member. The second region is movable between a first position to enable blood flow and a second position to inhibit blood flow. | 05-31-2012 |
20120203328 | SCAFFOLD DEVICE FOR PREVENTING TISSUE TRAUMA - A scaffold is provided for managing access through tissue. The scaffold can support the tissue during medical procedures. The scaffold is placed around or proximate an opening in tissue. The scaffold can expand when medical devices are introduced through the scaffold and through the opening and retract when the medical devices are removed. When the medical devices are removed, the scaffold closes automatically to substantially close the opening. | 08-09-2012 |
20130060323 | BRAIDED HELICAL WIRE STENT - Exemplary non-woven helical stents are described that are efficient to fabricate in terms of labor and resources by being able to be manufactured by hand or machine while providing mechanical stability equivalent or close thereto of known braided or woven stents. | 03-07-2013 |
20130090720 | DEVICE FOR SPLINTING A CAVITY, ORGAN DUCT AND/OR VESSEL - The invention relates to a device for splinting and/or maintaining a cavity, an organ duct and or a vessel in a human or animal body, said device including at least one compressible and self-expanding stent that is composed of at least three phases. | 04-11-2013 |
20130150951 | Shape Memory Polymeric Stent - An implantable, radially distensible stent includes a plurality of helically wound elongate members. The members include an overlapping portion having a longitudinal extent, opposed and convexly rounded sides defining a width of the members and opposed luminal and exterior surfaces. The members include shape memory polymer. The side of one elongate member slidingly overlaps the side of an adjacent elongate member to form a self-supporting wall structure of a stent. The stent wall is self-supporting without other support structure incorporated into or abutting the elongate members. Further, the shape memory polymer may include a biodegradable or bioabsorbable elements. | 06-13-2013 |
20130197623 | NON-WOVEN HELICAL WIRE STENT - Exemplary non-woven helical stents are described that are efficient to fabricate in terms of labor and resources by being able to be manufactured by hand or machine while providing mechanical stability equivalent or close thereto of known braided or woven stents. | 08-01-2013 |
20130197624 | STENT - The invention relates to a medical device and a method of using it. The device is a stent which can be percutaneously deliverable with (or on) an endovascular catheter or via other surgical or other techniques and then expanded. The stent is configured to have a central portion defined by “open” cells and at least two end portions, defined by “closed” cells, spaced apart and directly connected to the distal and proximal ends of the central portion of the stent. The stent may also optionally have a covering or a lattice with openings. | 08-01-2013 |
20130245747 | Anti-migration features and geometry for a shape memory polymer stent - A radially-expandable stent for implantation in a bodily passageway, being expandable from an initial unexpanded state to an expanded state, having an outer surface with a geometric pattern covering said outer surface to minimize migration after implantation is provided. Also provided is a method of manufacturing such a stent. | 09-19-2013 |
20130274866 | METHODS AND DEVICES FOR TREATMENT OF VASCULAR DEFECTS - An expandable support structure and methods of use for treatment of a patient's cerebral aneurysm are described. The support structure includes a fixed diameter ring and a plurality of elongate support members that are everted. The ring is secured to the plurality of elongate support members at a first end of the support structure. The support structure has a low profile, radially constrained state with an elongated tubular configuration having a low profile suitable for delivery from a microcatheter. The support structure also has an expanded relaxed state that defines a substantially globular hollow shape. | 10-17-2013 |
20140012366 | STENT - A stent capable of retarding or preventing occlusion resulting from granulation includes: an outer annular body with a circular cross section in which an outer through-hole penetrating in a direction intersecting the radial direction of the circular cross section is formed and which can expand and contract in the radial direction; and an inner annular body disposed on the inside of the outer through-hole, forms a double annular cross section together with the outer annular body at least at the openings of the outer through-hole, and in which an inner through-hole penetrating in a direction that intersects with the radial direction of said circular cross-section is formed. When placed indwelling in a living body, the outer annular body can expand in the radial direction and can thereby support the living tissue with at least the opening of the inner through-hole of the inner annular body spaced from the living tissue. | 01-09-2014 |
20140200655 | INTRAVASCULAR CARDIAC RESTRAINING IMPLANTS AND METHODS FOR TREATING HEART FAILURE - Intravascular cardiac restraining implants designed for treatment of heart disease and heart failure and methods for their use. The disclosed implants can be used to reshape or reinforce a diseased, weakened or distended portion of a patient's heart to counteract heart disease and heart damage. An intravascular cardiac restraining implant may include a first tissue anchor configured for implantation in a first region of a coronary vein, a second tissue anchor configured for implantation in a second region of the coronary vein, and at least one elongate member coupled to the first tissue anchor and the second tissue anchor. In one embodiment, the at least one elongate member may be a spring or a similar device configured for biasing the first and second tissue anchors toward one another, thus reshaping or reinforcing a diseased, weakened or distended portion of a patient's heart. | 07-17-2014 |
20140207228 | SHAPE MEMORY ALLOY ARTICLES WITH IMPROVED FATIGUE PERFORMANCE AND METHODS THEREFORE - Articles made of shape memory alloys having improved fatigue performance and to methods of treating articles formed from shape memory alloy materials by pre-straining the articles (or desired portions of the articles) in a controlled manner so that the resultant articles exhibit improved fatigue performance. The shape memory articles are preferably medical devices, more preferably implantable medical devices. They are most preferably devices of nitinol shape memory alloy, most particularly that is superelastic at normal body temperature. The pre-straining method of the present invention as performed on such articles includes the controlled introduction of non-recoverable tensile strains greater than about 0.20% at the surface of a desired portion of a shape memory alloy article. Controlled pre-straining operations are performed on the shape-set nitinol metal to achieve non-recoverable tensile strain greater than about 0.20% at or near the surface of selected regions in the nitinol metal article. | 07-24-2014 |
20140277384 | MEDICAL DEVICE WITH SELECTIVE RIGIDITY - A device for obtaining selective rigidity with respect to a patient is provided. The device includes a scaffold that is arranged to be flexible when in a first relaxed configuration, wherein the scaffold is configured to become substantially more rigid when a suction force is applied thereto. The scaffold comprises first and second opposing outer flexible layers that are sealed together to form a plurality of elongate pockets therein, and an expanded structure disposed within the plurality of elongate pockets and in communication with a vacuum port that receives the suction force. | 09-18-2014 |
20140343664 | IMPLANTABLE FLOW DIVERTER - A flow diverter for implantation into a patient's vessel includes a distal annular support element and a proximal annular support element, the proximal and distal support elements supporting a longitudinally twisted diverter element. The flow diverter is designed to be disposed within a vessel and to impart a rotational or twisting motion to the flow of blood passing therethrough, thereby to reduce the pressure of blood at the center of the vessel. Such flow diversion can reduce the pressure of blood impinging upon an aneurysm at a bifurcation downstream of the vessel. The device can be particularly useful for the treatment of aneurysms occurring at the bifurcation between the basilar artery and the posterior cerebral arteries. | 11-20-2014 |
20150127088 | WOVEN FABRIC WITH SHAPE MEMORY ELEMENT STRANDS - The disclosure relates to a woven fabric for use in an implantable medical device. The woven fabric comprises shape memory element strands woven with textile strands. At least one of the shape memory element strands has at least one float of at least five textile strands between binding points. | 05-07-2015 |
20150148886 | COLLAPSIBLE, SHAPE MEMORY ALLOY STRUCTURES AND FOLDING FIXTURES FOR COLLAPSING SAME - A shape memory alloy structure comprises at least one tubular member formed of shape memory material, each tubular member including a plurality of panels having side edges, wherein each tubular member is moveable between a radially contracted position and a radially extended position, and wherein the coupled side edges of adjacent panels of each tubular member form hinges for moving the structure between the contracted position and the extended position. Multiple layer tubular structures, methods for forming and fixtures for collapsing same are also disclosed. | 05-28-2015 |
20150366683 | Helical High Fatigue Stent-Graft - An implantable prosthesis, including a generally tubular substrate and a continuous shape memory member disposed over the outer surface of the substrate. The shape memory member may include a series of zig-zag struts alternating between a first strut with a first length and a second strut with a second length different from the first length. A graft member may be positioned over the substrate and shape memory member. | 12-24-2015 |
20160038316 | STENT APPARATUS AND TREATMENT METHODS - An apparatus including a plurality of stents is provided, each stent having a centre line curving in three dimensions. The plurality of stents includes at least one stent with a centre line having a right handed curvature and at least one stent with a centre line having a left handed curvature. | 02-11-2016 |
20160081799 | STENT MEMBER, ARTIFICIAL VALVE, AND METHOD OF IMPLANTING THE SAME - In various embodiments, a stent member is provided. The stent member may include a self-expanding stent frame defining in its expanded position a central annular opening along a longitudinal axis, the opening extending from a first end to a second end of the stent frame. The stent member may include at least one anchoring structure extending radially outwards from the second end of the stent frame. The stent member may further include a biocompatible coating on the stent frame. | 03-24-2016 |
20160081825 | HEAT-TREATED BRAIDED INTRAVASCULAR DEVICES AND METHODS - A process for making a product including an expandable member is provided. The process can include braiding a plurality of wires to form a tubular structure that is capable of being manipulated such that a region of the tubular structure changes in diameter from a first dimension to a second dimension different from the first dimension. The process can also include initially heat-treating the tubular structure while the region is in the first dimension, changing the diameter of the tubular structure such that the region achieves the second dimension, and subsequently heat-treating the tubular structure while the region is in the second dimension. | 03-24-2016 |
20160120642 | HEART AND PERIPHERAL VASCULAR VALVE REPLACEMENT IN CONJUNCTION WITH A SUPPORT RING - An implantable valve replacement system for a cardiovascular valve may include an adjustable stabilizing ring. The stabilizing ring may be composed of a body member that is transitionable from an elongate insertion geometry to an annular operable geometry. The stabilizing ring may further include a plurality of anchors deployable in the annular operable geometry to engage the annulus of the cardiovascular valve. The ring may be used in conjunction with an implantable valve frame. The valve frame may be located within the ring and the ring, in turn, may be stabilized through the anchors engaging the valve annulus. The valve replacement system may be applied by engaging the ring in its annular operable geometry with the valve annulus through the anchors. The valve frame may be inserted through the opening of the ring, thereby forming a stabilizing mechanical contact between the frame and the annulus. | 05-05-2016 |
20160135969 | APPARATUS AND METHOD FOR TISSUE ADHESION - An array of a plurality of shape memory material microposts have a proximal end configured to be secured to a substrate with a tissue penetrating distal end. The microposts further have a deployment state with the microposts in a substantially straightened configuration with a substantially smooth and continuous outer surface which is substantially parallel to adjacent microposts and an engaged state wherein at least a section of the microposts assume a configuration that is not substantially parallel to adjacent microposts or is not substantially straight with a substantially smooth and continuous outer surface so as to mechanically capture tissue adjacent thereto | 05-19-2016 |
623100190 | Temperature responsive | 13 |
20080208321 | POLYMERIC STENT AND METHOD OF MANUFACTURE - A stent formed of polymeric material, useful for the expansion of a lumen and the delivery of one or more therapeutic agents in situ is disclosed. The stent may be multi-layered, and may change shape at a state transition temperature governed by the materials forming the layers. Methods of use and manufacture are also disclosed. | 08-28-2008 |
20080249610 | SHAPE MEMORY ALLOY ENDOPROSTHESIS DELIVERY SYSTEM - In accordance with embodiments of the present invention, a method for preparing a shape memory alloy endoprosthesis, displaying strain induced martensite phenomenon, for delivery includes inserting a shape memory alloy endoprosthesis into a delivery device, inducing a first strain within a first region of the shape memory alloy endoprosthesis, inducing a second strain within a second region of the shape memory alloy endoprosthesis, and sterilizing the delivery device while maintaining the first strain and the second strain induced within the shape memory alloy endoprosthesis. In accordance with other embodiments of the present invention, an apparatus for delivering a shape memory alloy endoprosthesis includes an inner core having a first diameter, an outer body having a second diameter greater than the first diameter, and a calibrated endcap attached to the inner core. The outer body surrounds the inner core, and the calibrated endcap includes a roof section having a third diameter greater than the first diameter and less than the second diameter. | 10-09-2008 |
20090248141 | Shape Memory Polymer Medical Devices - Medical devices for in vivo medical applications are disclosed. The medical devices are constructed of shape memory polymer (SMP) materials capable of assuming a memory shape at physiological temperatures. These medical devices may be used in surgical procedures and in both vascular and non-vascular applications. These SMP medical devices have a post-implantation memory shape that is substantially identical to or slightly larger than the insertion site to adapt to vessel growth or size changes. SMP medical devices may be formed as stents or occlusion devices (i.e., plugs) having a number of different structural features. The SMP medical devices may be formed from a first monomer and a second cross-linking monomer, wherein the weight percentages of the first and second monomers are selected by performing an iterative function to reach a predetermined glass transition temperature (T | 10-01-2009 |
20100249906 | REDUCED PROFILE MEDICAL BALLOON ELEMENT - Medical dilatation balloons comprise a polymer that has the attribute of memory, and/or is crosslinked to impart memory. Such balloons exhibit a reduced tendency to overinflate at high inflation pressures. Furthermore, such balloons when shrunk radially by the application of heat while restraining axial shrinkage, exhibit customizable linear or non-linear compliance curves and lower crosslinking profile relative to the same balloon when unshrunk. Also disclosed is an expansive element within a tube whose outer diameter is equal to the outer diameter of the tube from which it was made. In addition, disclosed are (a) processes for preparing crosslinkable polymers, (b) joining crosslinked balloons to catheter systems, (c) forming shrunk balloon elements, and (d) forming an expansive element within a tube whose outer diameter is equal to the outer diameter of the tube from which it was made. | 09-30-2010 |
20110137405 | Stent with Expandable Foam - A stent for treating a physical anomaly. The stent includes a skeletal support structure for expanding in the physical anomaly and a shape memory material coupled to the skeletal support structure. | 06-09-2011 |
20120016463 | GUIDE WIRE AND STENT - A guide wire includes a distal core member made of a ferrous alloy which has shape memory properties and superelasticity. The ferrous alloy preferably includes substantially two phases, and has a difference of 100° C. or less between an Af point and an Ms point in a thermal hysteresis of martensitic transformation and reverse transformation. The guide wire may include a proximal core member made of an iron-containing alloy and having a higher modulus of elasticity than the distal core member. The two core members may be joined together by welding to form a core of the guide wire. | 01-19-2012 |
20130253634 | Stent With Expandable Foam - A stent for treating a physical anomaly. The stent includes a skeletal support structure for expanding in the physical anomaly and a shape memory material coupled to the skeletal support structure. | 09-26-2013 |
20130331927 | BIODEGRADABLE ENDOPROSTHESIS AND METHODS FOR THEIR FABRICATION - The disclosure provides biodegradable implantable devices such as a stent comprising a biodegradable polymeric wherein the polymeric material is treated to control crystallinity and/or Tg. The stent is capable to expand at body temperature in a body lumen from a crimped configuration to a deployed diameter and have sufficient strength to support a body lumen. | 12-12-2013 |
20140025161 | SHAPE MEMORY BIORESORBABLE POLYMER PERIPHERAL SCAFFOLDS - Bioabsorbable scaffolds having high crush recoverability, high fracture resistance, and reduced or no recoil due to self expanding properties at physiological conditions are disclosed. The scaffolds are made from a random copolymer of PLLA and a rubbery polymer such as polycaprolactone. | 01-23-2014 |
20140172074 | STENT WITH REINFORCED JOINTS - The present invention relates generally to stents for insertion into bodily lumens that include at least one strand that forms a self-expanding tubular structure. Specifically, these strands form a plurality of intersections at which one portion of the strand is in proximity to another portion of the same or different strand. More specifically, at least some of those intersections include a plurality of reinforcement members. | 06-19-2014 |
20150112423 | PHASE-CHANGE MATERIALS - A method is provided, including, delivering into a heart of a patient an annuloplasty ring structure including a body portion and an adjusting mechanism configured to adjust a size of the body portion of the annuloplasty ring structure, the adjusting mechanism including a housing, and following the delivering, moving the housing with respect to the body portion. Other applications are also described. | 04-23-2015 |
20150142099 | SHAPE MEMORY BIORESORBABLE POLYMER PERIPHERAL SCAFFOLDS - Bioabsorbable scaffolds having high crush recoverability, high fracture resistance, and reduced or no recoil due to self expanding properties at physiological conditions are disclosed. The scaffolds are made from a random copolymer of PLLA and a rubbery polymer such as polycaprolactone. | 05-21-2015 |
20160101221 | SHAPE CHANGE STRUCTURE - An expandable structure comprising: a first shape memory (SM) portion which is in a strain-induced state; and a second portion which resists expansion of said structure due to said first portion, over a plurality of different expansion states of said first portion. Optionally, wherein said SM portion resists contraction of said structure due to forces applied by said second portion. Optionally or alternatively, said strain induced state is characterized by a SM portion expanding force decreasing as a function of strain of said SM portion, so as to have a difference of at least 10% in force between two strain states said structure is usable at. | 04-14-2016 |