280 results about "Native valve" patented technology

A heart valve prosthesis for replacing a diseased native valve in a patient. The valve prosthesis includes a compressible and expandable frame structure and an anchor connected to an outer periphery of the frame structure. The anchor comprises a helical wire having a free end. The valve may further include a valve segment mounted within the frame structure and expanded with the frame structure. The frame structure may be configured for receiving a valve segment.

A polymeric mitral heart valve, comprising: valve leaflets (3), a valve stent (1) and a valve ring (2), wherein the valve stent (1) is of a hollow columnar structure, the valve stent (1) comprises a first end (11) and a second end (12), the first end (11) is provided with three column peaks (13) spaced apart in the circumferential direction and column valleys (14) are correspondingly formed; the valve ring (2) is arranged at the periphery of the second end (12) of the valve stent (1), two protruding sections (21) extending towards the first end (11) in the axial direction are formed at the periphery of the valve ring (2) to be capable of corresponding to two of the column peaks (13), and a flat section (22) is formed at a position corresponding to the other column peak (13); the valve further comprises an insert (5), the insert (5) is of a hollow columnar structure matching the valve stent (1), and the insert (5) is suitable for being embedded in the valve stent (1) in the axial direction; the valve leaflets (3), the valve stent (1) and the valve ring (2) undergo one-time injection molding, and the insert (5) is embedded in the valve stent (1) during injection molding to form a whole. By optimizing the structures of the valve ring (2) and the valve stent (1), the adaptability of the valve ring (2) to a native valve ring is improved, the radial support force of the valve stent (1) is improved, and the valve performance is optimized.

The present disclosure provides systems and methods for a replacement mitral valve. The replacement valve may be made of a less rigid material thereby allowing the packed diameter of the replacement valve to be decreased. The less rigid replacement mitral valve may include a ventricular portion and a central portion. The ventricular portion may include a guide channel. A wire may be advanced into the guide channel. The wire in the guide channel may increase the stiffness on the ventricular side of the replacement valve. The increased stiffness may prevent the replacement valve from collapsing through a native valve annulus.

Coaptation assist device for repairing cardiac valves and associated systems and methods are disclosed herein. A coaptation assist device configured in accordance with embodiments of the present technology can include, for example, a fixation member configured to press against cardiac tissue proximate to a native valve annulus, and a stationary coaptation structure extending away from the fixation member. The coaptation structure can include an anterior surface configured to coapt with a first native leaflet during systole and a posterior surface configured to displace at least a portion of a second native leaflet. The device also includes at least one sensor configured to detect parameters associated with at least one of cardiac function and device functionality. The sensors can be pressure sensors configured to detect left atrial pressure and / or left ventricular pressure.

A device configured to be positioned within a native heart valve to repair the valve. The device includes a leaflet pinching or capturing mechanism to capture a first leaflet and second leaflet of the native valve and then attach the first leaflet to the second leaflet. The device includes a first surface and a second surface, wherein the first surface and the second surface are movable between an open condition and a closed condition to pinch a first leaflet and a second leaflet of the native valve therebetween. Once the first and second leaflets are captured, portions of the leaflets are fused together, adhered together, or fused and adhered together. In some implementations, a system is configured to access a papillary muscle and ablate tissue of the papillary muscle to disable a conductive pathway to the papillary muscle.

The present application relates to the field of medical devices, and specifically to a repair device for preventing valve regurgitation, comprising a mounting bracket, a single anti-reflux prosthesis for replacing the function of a single native valve leaflet, and a fixing member, wherein one end of the single anti-reflux prosthesis is fixed on the mounting bracket, and an atrial segment is provided at the distal end of the mounting bracket, and the atrial segment is configured to adapt to the morphology of the native valve ring tissue, and the atrial segment includes a leak-proof portion, and the proximal end portion of the mounting bracket is anchored in the ventricle by the fixing member, wherein, after the mounting bracket is installed in place, the leak-proof portion abuts against or fits the native valve ring tissue, and when the native valve opens and closes so that the morphology of the native valve ring changes, the leak-proof portion follows the morphological change of the native valve ring and produces adaptive deformation, so that the leak-proof portion always abuts against or fits the native valve ring tissue.

A device for treating a diseased native valve in a patient is provided, the device including a frame structure; a valve segment positioned radially within the frame structure, the valve segment comprising a plurality of leaflets, and a plurality of commissure attachment mechanisms coupling the leaflets to the frame structure, each commissure attachment mechanism extending radially inwards from an outflow end of the frame structure as to create a gap between an interior diameter of the outflow end and an outflow edge of the valve segment. Other embodiments and methods of use are also provided.

A prosthetic heart valve for treatment of a diseased heart valve having native anterior and posterior leaflets that move between an open configuration and a closed position to regulate blood flow through the heart valve during a cardiac cycle of a heart. The prosthetic heart valve having a crescent shaped stent, at least one prosthetic leaflet mounted on an inner surface of the stent, and at least one prong structure coupling a portion of the at least one prosthetic leaflet to a lower ventricular portion of the stent frame. The prosthetic heart valve further having systems for anchoring the upper flared portion of the stent to a posterior portion of the native valve annulus.

A method of retrieving a previously implanted device from a native valve of a patient's heart includes attaching the retrieval device to the previously implanted device. An actuation member can engage the previously implanted device to move the previously implanted device from a closed configuration to an open configuration. A clasp capturing member can attach to a clasp of the previously implanted device.

Prosthetic heart valves may be delivered to a targeted native heart valve site via one or more delivery catheters. In some embodiments, the prosthetic heart valve includes structural features that securely anchor the prosthetic heart valve to the anatomy at the site of the native heart valve. Such structural features can provide robust migration resistance. In addition, the prosthetic heart valves can include structural features that improve sealing between the prosthetic valve and native valve anatomy to mitigate paravalvular leakage. In particular implementations, the prosthetic heart valves occupy a small delivery profile, thereby facilitating a smaller delivery catheter system for advancement to the heart. Some delivery catheter systems can include a curved inner catheter to facilitate deployment of the prosthetic heart valve to a native tricuspid valve site via a superior vena cava or inferior vena cava.

Disclosed are numerous embodiments of selective occlusion devices (SODs) that can be disposed in native heart valves in conjunction with leaflet clips to remediate regurgitation of the native valve.

An implantable prosthetic device includes a coaption portion, paddles, and clasps. The paddles are moveable from a closed position to an open position. The clasps are also moveable from an open position to a closed position. The clasps include a fixed arm and a plurality of movable arms. The implantable prosthetic device can be used to repair a native valve, such as a native mitral valve.

The present application relates to the field of medical devices, and specifically to an aortic valve auxiliary prosthesis for preventing regurgitation, comprising: a main body, which is configured to remain in place in the aorta at the surgical site; and three auxiliary leaflet segments configured to cooperate with the three free segments of the native leaflets of the aortic valve; the three auxiliary leaflet segments are fixed to the main body. The present invention allows the original native leaflets to be retained, and when the native valve is closed, the purpose of improving the prevention of regurgitation is achieved by overlapping and covering the free segments of the native valve, with significant therapeutic effects and stronger targeting. Since the native valve is retained, most of the impact force of blood when flowing is still on the native valve, the reliability requirements for the fixed positioning of the main body are low, and the morphological changes to the native valve are smaller.

A prosthetic device for treating a native valve of a heart includes a sealing element and an anchoring element. The sealing element comprises a braided mesh material. The sealing element is dimensioned to be deployed at the native valve. The sealing element is configured to both be radially expanded and radially reduced while at a position between the native valve leaflets. The anchoring element is coupled to the sealing element and is configured to support the sealing element between the native valve leaflets.

The present invention provides a prosthetic heart valve, including a stent, prosthetic leaflets and an occlusion mechanism. Both the prosthetic leaflets and the occlusion mechanism are connected to the stent. The occlusion mechanism is able to extend outwards away from the stent and fill up a recessed portion of a native valve annulus, thereby closely fitting the prosthetic heart valve against the native valve annulus and effectively preventing paravalvular leakage.

Prosthetic heart valves may be delivered to a targeted native heart valve site via one or more delivery catheters. In some embodiments, the prosthetic heart valve includes structural features that securely anchor the prosthetic heart valve to the anatomy at the site of the native heart valve. Such structural features can provide robust migration resistance. In addition, the prosthetic heart valves can include structural features that improve sealing between the prosthetic valve and native valve anatomy to mitigate paravalvular leakage. In particular implementations, the prosthetic heart valves occupy a small delivery profile, thereby facilitating a smaller delivery catheter system for advancement to the heart. Some delivery catheter systems can include a curved inner catheter to facilitate deployment of the prosthetic heart valve to a native tricuspid valve site via a superior vena cava or inferior vena cava.

An implant and system for reshaping a valve annulus includes an elongate template having one or more anchors which couple directly to a body of the implant or may be indirectly couple through a separate anchor array support. When implanted, the template foreshortens and / or reshapes a peripheral length of the valve annulus can be to improve coaption of native valve leaflets and / or to eliminate or decrease regurgitation of a valve. The template may have one or more skirts augmenting or replacing a defective native valve leaflet function. The template in another example may be coupled to a chordae which is attached to a ventricular wall to improve the heart hemodynamic function. The template may be configured to prevent displacement of an anchor.

An implantable prosthetic device has a coaptation element. At least a portion of the coaption element is formed from the strip of material. A pair of paddles are connected to the coaption element. The paddles are movable between an open position and a closed position. The paddles are configured to attach to the native valve of the patient.

Devices, including transcatheter heart valve repair devices and transcatheter replacement valves, are provided with sensing arrangements. The sensing arrangements can be configured such that a removable portion can be separated from an implantable portion, an entirety of the sensing arrangement can be removed from the device, an electrode of the sensing device is expandable, and / or a potentiometer of the sensing device can sense an amount of tension on a native valve leaflet. Fixation arrangements for fixating electronic components of the repair devices are also disclosed. Feedback indicators are further disclosed and can include, for example, haptic, visual and audio status indicators of leaflet position.

The invention discloses an intrusive aorta valved conduit, comprising: an ascending aorta prosthesis comprising an ascending aorta stent, and an ascending aorta covering film covering the ascending aorta stent, so that the ascending aorta prosthesis can be adapted to the inner wall of the ascending aorta and form a sealing fit with the inner wall of the ascending aorta; the valve prosthesis comprises a valve support and a valve blade. Comprising at least one group of connecting rib units, the connecting rib units are connected with the ascending aorta stent and arranged in the longitudinal direction of the ascending aorta stent, and one ends of the connecting rib units are connected with the valve stent to restrain the bending direction of the ascending aorta stent; the ascending aorta stent can only be bent along the plane where the connecting rib units and the central axis of the ascending aorta stent are located. Through the arrangement of the connecting ribs, the angle of the valved pipeline in the input process can be controlled, so that the bending direction of the valved pipeline in the in-vivo conveying process is accurately controlled, the implantation angle of the instrument is convenient to adjust and control, the instrument can be accurately aligned with the boundary edge of a native valve leaflet, and the implantation precision of the valved pipeline is guaranteed.

The utility model provides an anchoring device and a transcatheter artificial aortic valve system. The anchoring device is of an integrated structure and comprises an anchoring valve ring support at the telecentric end and an anchoring foot at the proximal end. The anchoring valve ring support is of a cylindrical net-shaped structure. The number of the anchoring feet is three, the anchoring feet are distributed on the periphery of the proximal end of the anchoring valve ring support, the anchoring feet have an abduction angle relative to the axis of the anchoring valve ring support, and each anchoring foot is of a C-shaped hollow structure. According to the anchoring device and the transcatheter artificial aortic valve system, after the anchoring device is released through a catheter, the anchoring foot is embedded into the aortic sinus bottom corresponding to the aorta root, the native valve is extruded between the anchoring foot and the artificial aortic valve, and a first anchoring state is formed; after the artificial aortic valve is expanded, the artificial aortic valve is tightly attached to the anchoring valve ring support and the aortic valve ring to form a second anchoring state; double anchoring provides a stable and reliable supporting effect for the artificial aortic valve.

Methods and systems for rotationally aligning cusps of a prosthetic heart valve with cusps of a native valve are disclosed. As one example, a method includes advancing a distal end portion of a delivery apparatus toward a native valve of a heart, a prosthetic heart valve radially compressed around the distal end portion, and visualizing under fluoroscopy, within an imaging view, a position one or more radiopaque markers disposed on the distal end portion relative to one or more native valve cusps. The method further includes rotating the distal end portion until the one or more markers are circumferentially aligned with a middle of the one or more native valve cusps and deploying the radially compressed prosthetic heart valve with the delivery apparatus to radially expand the prosthetic heart valve in the native valve such that the cusps of the prosthetic heart valve and the native valve are circumferentially aligned.

A prosthetic mitral valve includes an anchor assembly, a strut frame, and a plurality of replacement leaflets secured to the annular strut frame. The anchor assembly includes a ventricular anchor, an atrial anchor, and a central portion therebetween. The ventricular anchor and the atrial anchor are configured to flare radially outwards relative to the central portion. The annular strut frame is disposed radially within the anchor assembly and is attached to the anchor assembly. The central portion is configured to align with a native valve orifice and the ventricular anchor and the atrial anchor are configured to compress native cardiac tissue therebetween.

A docking device for securing a prosthetic valve at a native valve is provided. The docking device can include a coil and a guard member. The coil includes a plurality of helical turns when in a deployed orientation. The guard member is attached to the coil by being coupled to at least a portion of a helical turn thereof. The guard member includes a scaffold with a spine and a plurality of arms extending from the spine. The plurality of arms is coupled to a flap. The guard member is movable between a radially compressed state in a delivery orientation and a radially expanded state in the deployed orientation.

A valve device comprises a valve body with a framework and a valve portion coupled to the framework that is movable between open and closed positions. The framework comprises a plurality of wire portions. The valve portion may be formed of a material that promotes in-growth of native tissue so that the valve portion cooperates with native valve leaflets. The valve device also comprises one or more anchors and anchor tethers that secure the valve device in a heart. In some examples, the method includes folding and loading the valve body into a valve cartridge, delivering the valve body through a guide tube to a position the valve body at a target positioned within the heart, pushing the valve body out of the guide tube, and secure the anchors and anchor tethers in the heart, and cutting the anchor tethers to remove excess portions.

An implantable device or implant is configured to be positioned within anatomy such as a native heart valve to repair the valve. The implantable device or implant is configured to be attached to one or more portions of the anatomy or native heart valve, such as one or more portions thereof can be moved closer together. For example, native valve leaflets, chordae tendinea, papillary muscles, a leaflet cleft, etc. can be moved to prevent or inhibit regurgitant flow through the native valve.

An implantable prosthetic device has a coaption element, a pair of paddles, and at least one cover. The coaption element is configured to be positioned within the native heart valve orifice to help fill a space where the native valve is regurgitant and form a more effective seal. The cover can at least partially cover the coaption element and / or the pair of paddles. The cover is at least partially closed by alternating in and out stitches that are substantially unexposed when the cover is secured on the device.

A retrieval device for retrieving a previously implanted device from a native valve of a patient's heart includes one or more retrieval components. The retrieval components include one or more of a device securing member, a device actuation member, and a clasp capturing member. The securing member is configured to attach the retrieval device to the previously implanted device. The actuation member engages the previously implanted device to move the previously implanted device from a closed configuration to an open configuration. The clasp capturing member is configured to attach to a clasp of the previously implanted device.

The invention relates to a heart valve docking device and a system for treating a native valve of a patient. In various embodiments, the device is configured to repair a native heart valve or to secure a prosthetic heart valve within a native valve of a patient's heart. An embodiment of the apparatus includes at least an upper coil and a lower coil, wherein the apparatus is configured to assume an axially expanded state in which the entire upper coil is positioned on a first side of the lower coil relative to the central axis and an axially compressed state in which at least a portion of the upper coil is positioned on a second side of at least a portion of the lower coil opposite the first side relative to the central axis.

A valve stent and an artificial valve. The valve stent (100) comprises: a stent main body (110), a plurality of first support arms (120), and at least one second support arm (130). The plurality of first support arms are arranged in a circumferential direction of the stent main body. One end of each of the first support arms is connected to an outflow end (112) of the stent main body, and the other end (121) of each of the first support arms is arranged outside the stent main body and extends toward the direction of an inflow end (111) of the stent main body. One end of the second support arm is connected to the outflow end of the stent main body, and the other end (131) of the second support arm is arranged outside the stent main body. The stent main body is used for placement at an aortic valve. A native valve leaflet (11) is accommodated between the stent main body and the first support arms, and the other end of each of the first support arms is used for extending into a corresponding aortic sinus to provide anchoring. In each aortic sinus, at least one first support arm is arranged, and the second support arm is used for expanding an aortic wall. When a pure aortic regurgitation valve is replaced, the valve stent can provide stable and reliable anchoring by means of the first support arms and the second support arm, can be prevented from interfering and blocking the coronary artery ostia by means of the second support arm, and can expand the aortic wall during delivery.