205 results about "Cardiac valve prosthesis" patented technology

The present application relates to the technical field of medical devices, and provides a recovery device for recovering connecting wires and a heart valve prosthesis delivery device, wherein the recovery device for recovering connecting wires comprises: a recovery body connected to a handle and a retractable wire assembly assembled on the recovery body; the retractable wire assembly comprises a rod body that can rotate relative to the recovery body, and several single rotators that are arranged on the rod body and can rotate relative to the rod body for unidirectional wire retraction, and each single rotator is provided with a fixing portion for connecting the connecting wire and a winding portion for winding the connecting wire. The technical solution of the present application can solve the technical problem that during the recovery process of the heart valve prosthesis, multiple connecting rings on the heart valve prosthesis cannot return to the position of abutting against the fixing head at the same time, resulting in failure of recovery of the heart valve prosthesis.

Delivery systems, devices, and methods for delivering a valve prosthesis to a native valve annulus are provided. The valve prosthesis may be secured to the native valve via an anchor that encircles the native valve annulus and the valve prosthesis. The anchor may be deployed around the chordae tendinea and / or leaflets of the native valve. A tether may be connected to the anchor and extend outside of the patient's body to maintain communication with the anchor. After the anchor is deployed, a guidewire may be advanced through the patient's vessels parallel to the tether and through the native valve annulus. A valve delivery catheter carrying the valve prosthesis may be advanced over the guidewire and into the native valve annulus where the valve prosthesis is released and deployed. The tether may be used to position the anchor and / or valve prosthesis during one or more operations of the valve delivery process.

The utility model provides a valve stent and an artificial heart valve prosthesis, the artificial heart valve comprises the valve stent, the valve stent is provided with an inflow end and an outflow end which are opposite to each other, and the valve stent comprises a main stent and a plurality of clamping mechanisms which are arranged at intervals along the circumferential direction of the main stent and are connected with the outer circumferential surface of the main stent; the clamping mechanism comprises a first clamping body and a second clamping body which are arranged in the direction from the inflow end to the outflow end. The first clamping body and the second clamping body are used for clamping the native valve leaflet so that the heart valve prosthesis can be anchored in the heart, the anchoring of the heart valve prosthesis can be achieved without extruding the valve ring in the radial direction through the main support, and the situation that native tissue such as the valve ring is damaged due to radial extrusion is avoided.

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.

A prosthetic valve component is disclosed for a valve prosthesis. The valve component includes valve leaflets configured to be operably coupled within a frame of the valve prosthesis, wherein each valve leaflet is shaped and sized to achieve a target pinwheeling score PS. The target pinwheeling score correlates to full contact being made between free edges of the valve leaflets, when the valve leaflets are operably coupled within the frame of the valve prosthesis, such that no central opening and little to no overlap occurs between the valve leaflets.

The present disclosure relates to methods of treating a patient that has a low coronary ostia height. The methods can involve advancing a heart valve prosthesis to a native valve structure having an ostium and positioning the prosthesis to align a gap between major peaks of the prosthesis with the ostium to avoid obstruction of the ostium. The presently disclosed methods and prostheses can be effective at treating patients with a coronary ostia height of as low as 10 mm, 8 mm, 6 mm, or less.

The present application relates to the technical field of medical devices, and provides an interventional heart valve prosthesis delivery device and a handle thereof, wherein the interventional heart valve prosthesis delivery device comprises: a handle; a delivery assembly extending in the handle and axially movable relative to the handle; the delivery assembly comprises a transmission rod; and at least two first drive assemblies, wherein the first drive assemblies are arranged along the circumference of the transmission rod, the first drive assemblies are connected to the transmission rod, and are used to drive the transmission rod to move axially relative to the handle. Through the technical solution of the present application, an interventional heart valve prosthesis delivery device and a handle thereof can be provided that improves the convenience of operation for medical staff.

A heart valve prosthesis is positioned within an index valve prosthesis. The heart valve prosthesis includes an annular frame extending along a valve axis between a first valve end and a second valve end. The annular frame includes a plurality of frame members and is adjustable between a radially-collapsed configuration and a radially- expanded configuration. The annular frame includes a central region including a folded segment that moves between a first configuration and a second configuration. The folded segment is biased toward the second configuration. The folded segment defines a channel on an outer radial side of the folded segment when the folded segment is in the second configuration. The channel receives at least one lacerated leaflet of the index valve prosthesis. Methods of implanting a heart valve prosthesis are provided.

The present application relates to the technical field of medical devices, and provides an interventional heart valve prosthesis delivery device and a threading member thereof, wherein the interventional heart valve prosthesis delivery device comprises: an outer tube; an inner tube located in the outer tube; a threading member, which is arranged on the inner tube, and is provided with a threading hole and a positioning portion; a thread end positioning member, one end of which is detachably positioned in the positioning portion of the threading member; a pulling member, one end of which passes through the threading hole to connect to the heart valve prosthesis and is connected to the thread end positioning member, and the other end extends out of the outer tube. Through the technical solution of the present application, the relative position of the heart valve prosthesis and the heart can be adjusted, and the accuracy of the implantation of the heart valve prosthesis can be improved.

A delivery system for transcatheter implantation of a heart valve prosthesis. The delivery system includes an outer sheath component defining a lumen therethrough, an elongate tube having at least two flat wires longitudinally extending from a distal end thereof, and self-expanding first and second frames disposed in series within a distal portion of the outer sheath component and held in a compressed delivery configuration therein. The elongate tube and the at least two flat wires are slidably disposed within the lumen of the outer sheath component. In the compressed delivery configuration the at least two flat wires longitudinally extend along exterior portions of the first and second frames and are woven through adjacent ends of the first and second frames to releasably couple them to each other. Proximal retraction of the at least two flat wires from the first and second frames releases at least the first frame from the delivery system.

Catheter apparatuses and methods are provided for repairing heart valves, particularly mitral valves. The method includes providing a catheter having an elongate, flexible body, with a proximal end and a distal end. The distal end can be transluminally advanced from the left atrium through the mitral valve. A distal anchor zone or portion coupled with the proximal end can extend and along the left ventricular outflow tract into the ascending aorta. A valve repair device is deployed to permanently connect leaflets at a mid-section of a mitral valve while permitting medial and lateral portions of the natural leaflets to open and close. The catheter apparatuses may be positionable using a steering device. The valve repair device detachably connects the distal and proximal ends of the catheter. The valve repair device can be detached using low profile devices actuatable from the proximal or distal ends, e.g., at a venous or arterial access site.

The application provides a heart valve prosthesis and a preparation method thereof, the heart valve prosthesis comprising a stent and an integrated valve, the integrated valve comprising artificial valve leaves and a skirt, and the integrated valve being fixed to the stent by sewing threads; the preparation method comprises the following steps: obtaining an integrated valve material, and sequentially subjecting the integrated valve material to cutting, pre-shaping and folding processes, and finally sewing the folded integrated valve material on the stent to obtain the heart valve prosthesis. The application can minimize the damage to the valve, increase the durability of the valve, simplify the sewing process, reduce the production cost and improve the production efficiency.

Systems of quickly and easily implanting a quick-connect heart valve prosthesis during a surgical procedure are provided. The heart valve may include a substantially non-expandable, non-compressible prosthetic valve and a plastically-expandable frame, thereby enabling attachment to the annulus without sutures. A system and method for deployment includes an integrated handle shaft and balloon catheter. A safety member disposed between the balloon catheter and handle shaft prevents premature catheter advancement prior to heart valve placement at the annulus, and also may prevent premature balloon inflation prior to full catheter advancement.

A heart valve prosthesis includes a frame defining a central lumen, a valve assembly disposed within the central lumen of the frame, and a plurality of gripper pads. The gripper pads are configured to engage lacerated leaflets of a previously implanted heart valve prosthesis. The gripper pads are configured to separate from each other to separate the lacerated leaflets when the heart valve prosthesis radially expands from a radially compressed configuration to a radially expanded configuration.

The present invention relates to a heart valve prosthesis for implantation into the heart of a patient and to an insertion system for introducing such a heart valve prosthesis into the heart of a patient.

A method of preventing paravalvular leakage includes concurrent delivery of a heart valve prosthesis and an annular sealing component. During delivery, the sealing component is moved from a first position to a second position of the heart valve prosthesis which is longitudinally spaced apart from the first position of the heart valve prosthesis. The sealing component is secured around the heart valve prosthesis at the second position by a contoured outer surface of the heart valve prosthesis. The sealing component may be a flexible ring or may be a cylindrical flexible sleeve having a plurality of ribs longitudinally extending over the cylindrical sleeve. The ribs operate to deploy the sealing component such that at least a portion of the cylindrical sleeve buckles outwardly away from the outer surface of the heart valve prosthesis.

Methods for the rapid retraction of trans-catheter heart valve delivery systems are provided. A rapid retraction trans-catheter heart valve delivery system comprises a catheter based delivery system. The delivery system has internal mechanisms that allow for the controlled deployment of a heart valve prosthesis, as well as mechanisms that allow for quickly closing the catheter once the heart valve prosthesis has been implanted. This rapid retraction ability allows for reduced procedural durations and thus reduced risk to the patient.

Heart valve prosthesis implantation apparatus (10), comprising: - a prosthesis catheter (11) with a heart valve prosthesis (12) to be implanted, - an ICE catheter (9) - for insertion into a surrounding area of ​​a heart valve (HC) to be treated, - for detecting a relative position (RPHC) and / or a relative orientation direction (ROHC) of the heart valve (HC) to the ICE catheter (9) by means of an ultrasound image (USHC) of the heart valve (HC) through the ICE catheter (9), and - preferably for performing ultrasound images (USPC) of the prosthesis catheter (11), wherein the ICE catheter (9) is configured to determine an absolute reference position (ARPHC) and / or an absolute reference orientation direction (AROHC) of the heart valve, 2D ultrasound images in multiple planes, and / or 3D ultrasound images of the heart valve (HK) to create- a navigation system (51) for determining an absolute position (APICE) and an absolute orientation direction (AOICE) of the ICE catheter (9), - a control device (52) for controlling the insertion of the heart valve prosthesis (12) into the annulus of the heart valve (HC) based on the ultrasound images (USHK, USPK, USHKP) of the ICE catheter (9) and position and orientation direction information (APICE, AOICE, APPK, AOPK, APHKP, AOHKP) from the navigation system (51), - a display (53) for simultaneously displaying information (APHKP, AOHKP) regarding the position and / or orientation of the heart valve prosthesis (12) and the 2D ultrasound images and / or 3D ultrasound images for monitoring the insertion of the heart valve prosthesis (12) into the annulus of the heart valve, wherein the control device (52) is set up toto verify the correct insertion of the heart valve prosthesis (12) based on a comparison of the current position (APHKP) and / or the current orientation direction (ORHKP) of the heart valve prosthesis (12) with the determined absolute reference position (ARPHK) and the reference orientation direction (AROHK) of the heart valve (HC).

A transcatheter heart valve delivery assembly is provided for delivering a heart valve prosthesis to a treatment site. The transcatheter heart valve delivery assembly includes a handle defining an elongated opening, and an actuator that rotates relative to the handle. A rotation member is positioned within the elongated opening and is attached to the actuator. The rotation member rotates with the actuator. An outer member is attached to the rotation member and extends from the handle toward the treatment site. The outer member rotates with the rotation member. A capsule is attached to the outer member. The capsule rotates with the outer member such that the heart valve prosthesis is rotatable. Methods of implanting a heart valve prosthesis are provided.

The present invention relates to an atrioventricular heart valve prosthesis implantable, for example, into the heart of a mammal. The heart valve prosthesis comprises a collapsible-expandable tubular stent having a lumen, preferably having an opening cross-section or area during use or in a fully expanded state of the stent that is smaller than an opening area of a native atrioventricular heart valve to be replaced by the heart valve prosthesis. The heart valve prosthesis further includes an inner valve tip disposed within the lumen of the tubular stent that closes the heart valve by resting against each other, an outer valve leaflet that closes against the native valve leaflet, and at least one anchor wire connected directly or indirectly to the tubular stent. The invention also relates to a method for manufacturing a heart valve prosthesis and to a method for inserting a heart valve prosthesis.

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.

Heart valve prostheses comprise an expandable stent frame configured to expand from a contracted orientation to an expanded orientation. The heart valve prostheses can further comprise a valve apparatus extending past a distal end of the expandable stent frame. The valve apparatus comprise a plurality of commissure posts, each commissure post of the plurality of commissure posts comprises a first end portion attached to a distal end portion of the expandable stent frame, a second end portion attached to a distal tip of the valve apparatus at a distal end of the valve apparatus. The plurality of commissure posts converge together in a distal direction towards the distal tip. The valve apparatus further comprise a plurality of leaflets each coupled to a corresponding pair of the plurality of commissure posts.

Disclosed is an improved stent and a related replacement heart valve prosthesis exhibiting various features for improved fixation and crush resistance. The stent is characterized by an inner stent fixed to an outer stent with connecting struts. The stent and heart valve prosthesis can be used for replacement of a defective endogenous heart valve.

The disclosure relates to a heart valve prosthesis with a variable sealing function, a method for replacing a native heart valve with a heart valve replacement prosthesis with a variable sealing function and the use of a heart valve replacement prosthesis with a variable sealing function for treating a heart valve disorder.

The present application provides a heart valve prosthesis, which has a first end and a second end opposite in a first direction; the heart valve prosthesis comprises a first support body, a second support body and an artificial valve leaflet; the first support body has a first edge and a second edge opposite in a second direction, which is perpendicular to the first direction; the second support body comprises a first segment, which is located on one side of the first support body and has a non-linear configuration; the first segment intersects the first edge at a first intersection point and intersects the second edge at a second intersection point; the second support body is connected with the first support body and allows the first segment to rotate relative to the first support body around a line connecting the first intersection point and the second intersection point; the artificial valve leaflet is connected with the edge of the second support body located on the side close to the first end and the first segment; the heart valve prosthesis has a contracted state and an expanded state; when the heart valve prosthesis switches from the contracted state to the expanded state, the first segment rotates and drives the middle part of the first segment to move in the direction close to the first end, and the distance between the middle part of the first segment and the first support body increases; when the heart valve prosthesis is in the expanded state, the area of the cross section of the artificial valve prosthesis perpendicular to the first direction first increases and then decreases along the first direction. The heart valve prosthesis can replace the native atrioventricular valve and / or the native arterial valve and has a larger effective valve orifice area.

A monitoring apparatus is provided for monitoring physiological information of a heart of a patient. The monitoring apparatus includes a heart valve prosthesis implanted into a first valve of the heart. At least one passive sensor is attached to the heart valve prosthesis and obtains physiological information adjacent to the first valve of the heart. A first wireless power component is electrically coupled to the at least one passive sensor. An electronic implant is implanted within the patient. The electronic implant includes a power source including a second wireless power component that wirelessly communicates with the first wireless power component. The wireless communication between the first wireless power component and the second wireless power component powers the at least one passive sensor. Methods of monitoring physiological information of a heart of a patient are provided.

Heart valve prosthesis delivery devices and methods. The devices include a delivery catheter and stabilization catheter. The stabilization catheter has expandable anchoring segments to anchor the device at a cardiac site superior to the implantation site of the heart valve prosthesis. The stabilization catheter also has a tubular assembly that includes an outer tubular member and an inner tubular member translationally displaceable within the outer tubular member. The outer tubular member defines a longitudinally extending slit and the inner tubular member defines an aperture positionable within the longitudinally extending slot. The device includes a snare and the location of the distal end of the snare adjacent to the distal portion of the delivery catheter is adjustable via translational displacement of the inner tubular member relative to the outer tubular member.

A heart valve prosthesis is positioned within an index valve prosthesis. The heart valve prosthesis includes an annular frame extending along a valve axis between a first valve end and a second valve end. The annular frame includes a plurality of frame members and is adjustable between a radially-collapsed configuration and a radially-expanded configuration. The annular frame includes an engagement region extending circumferentially around the valve axis and includes at least one protrusion arm extending radially outwardly. At least one anchor is attached to the at least one protrusion arm and contacts at least one lacerated leaflet of the index valve prosthesis and moves the at least one lacerated leaflet to a position that does not obstruct a coronary artery. Methods of implanting a heart valve prosthesis are provided.