52results about "Annuloplasty rings" patented technology

Provided is a valve implantation device with the assistance of a heart isolation device, which includes a valve, a heart isolation device, and a valve connection device, wherein the heart isolation device includes an isolation device body; the isolation device body is provided with a positioning part; the isolation device body is fixed on a heart tissue through the positioning part; the valve connection device includes a first connection part; one side of the first connection part is connected with the valve; the isolation device body is provided with a second connection part; and the first connection part and the second connection part are connected during use. The device of the present disclosure can improve the cardiac function before / during valve implantation and increases the effectiveness of an operation. Fixing the valve by the hook-type structure can reduce metal objects required for replacement and avoid potential injury to a heart valve structure. A connector structure connected to the valve stably locates the valve and accurately releases the height of the valve, so that paravalvular leak and injury to a valve annulus plane can be prevented.

To provide an apparatus and method for repairing an atrioventricular valve. **Solution**: An apparatus for use with an annulus forming ring (20) and an atrioventricular valve of a mammalian subject's heart. A plurality of chordae manipulating arms (26) each comprise a flexible material and a stiffening element (70), the stiffening element being configured to impart a desired shape to the chordae manipulating arm (26) when the chordae manipulating arm is disposed in a non-radially constrained configuration. The chordae manipulating arms (26) are deployed between the chordae of the atrioventricular valve and are then configured to reduce the size of the valve annulus by twisting the native atrioventricular valve and rotating the chordae manipulating arms (26) to pull the native atrioventricular valve radially inward. The stiffening element (70) is configured to be removed from and / or de-stiffened from the flexible material of the chordae manipulating arm to facilitate removal of the chordae manipulating arm from between the chordae. Other applications are also described.

The application provides a connecting assembly and a valve clamping system comprising the same. The connecting assembly comprises a first fixing member, a second fixing member, a mandrel, a locking member and an elastic member. The first fixing member is fixedly connected with a delivery sheath tube and is provided with a first axial inner cavity. The second fixing member is fixedly connected with a medical implant. The mandrel is movably arranged in the first axial inner cavity. The proximal end of the locking member is rotatably connected with the first fixing member and partially extends into the first axial inner cavity. The elastic member is arranged between the locking member and the first fixing member. The connecting assembly has a connected state and a released state. In the connected state, the mandrel abuts against the proximal end of the locking member, so that the distal end of the locking member is kept inserted into the second fixing member in the radial direction. In the released state, the mandrel has a radial gap with the proximal end of the locking member or is withdrawn from the first axial inner cavity, and the elastic member drives the corresponding locking member to rotate the proximal end of the locking member, so that the distal end of the locking member is radially separated from the second fixing member to release the connection.

An implantable prosthetic valve comprises an annular frame that is radially expandable from a radially compressed state to a radially expanded state. The frame has an inflow end, an outflow end, and a longitudinal axis extending from the inflow end to the outflow end. The prosthetic valve also comprises a plurality of leaflets positioned to regulate a flow of blood from the inflow end to the outflow end of the frame, and a skirt assembly. The skirt assembly comprises a laminate having a textile layer sandwiched between a first encapsulation layer and a second encapsulation layer. The first and second encapsulation layers are made of an elastomer and the textile layer comprises a first set of yarns and a second set of yarns interwoven with the first set of yarns, wherein the first and second sets of yarns are non-perpendicular and non-parallel to the longitudinal axis.

The guide assembly (100) is transluminally advanceable to the subject's heart. The guide assembly includes (i) a guide frame (110) deployable within the heart, (ii) one or more fasteners (40) secured to the guide frame, each fastener defining a closed loop (28), and (iii) a guide rail (102) threaded through the fasteners such that deployment of the guide frame to a site positions the guide rail along tissue (10). The tools (50, 56) are configured to fasten an implant (160) along tissue while guided by the guide rails, and secure the implant to the tissue such that the implant is coupled to the guide frame by being disposed through the loops of the fasteners. The fasteners are unlockable within the heart, allowing the guide frame to be decoupled from the implant. Other implementations are also described.

A suture locking assembly having a suture tensioner is disclosed herein. The suture locking assembly can include a suture tensioner configured to selectively rotate to gather a length of suture. The suture tensioner includes a pair of spaced posts and a connection body coupled to each of the posts. The suture locking assembly can also include a suture tensioner, a tensioner housing, and a quick release suture mechanism. The tensioner housing at least partially receives the suture tensioner and includes a suture inlet port and a suture outlet port. The suture tensioner is configured to selectively rotate relative to the tensioner housing to selectively increase the length of suture surrounded by the tensioner housing. The quick release suture mechanism includes a quick release dock port and a suture anchor cap configured to selectively couple to and decouple from the quick release dock port.

Various embodiments of the present invention comprise a single-chamber collapsible and expandable prosthetic valve implant device with an elevated valve section and comprising the following capabilities: (1) preservation of native valve functionality; (2) initial preservation of native valve functionality with subsequent full replacement of native valve functionality; (3) full replacement of native valve functionality; and / or (4) mitigation of the prolapsing distance of the dysfunctional leaflets by preventing the anterior excursion of the prolapsing leaflets above the upper annular surface and into the left atrial chamber in order to preserve native leaflet functionality for as long as possible. The expanded and implanted device does not extend beyond the boundaries of the subject heart chamber, e.g., the left atrium, thereby enabling the preservation of any remaining native valve functionality with subsequent full replacement of native valve functionality if and when needed.

An anchoring device that can be positioned within a native valve, such as the native mitral valve, to secure a replacement prosthetic valve in place. The anchoring device can comprise a docking Station formed of an elastic tube-like member defining a generally coiled shape. The docking Station can have an atrial or stabilization turn, a leading or encircling turn, and a central region. In many embodiments, the docking device possess a plurality of cuts on opposing sides of the tube-like member to allow biasing of the member.

The present invention discloses a one-way limiting expandable artificial heart valve which comprises a valve seat (1), a valve leaflet stent (2) and three valve leaflets (3) attached to the valve leaflet stent (2), wherein the valve seat (1) comprises a one-way limiting expandable annular metal seat (4), the annular metal seat (4) is composed of three sections of seat body units (5) which are connected with each other in an up-down staggered overlapping manner, the head end of each section of seat body unit (5) is sequentially provided with a first rivet (8), a limiting protrusion (7) and a first long circular groove (6), the tail end of each section of seat body unit (5) is sequentially provided with a second long circular groove (9) matched with the first rivet (8) at the head end of the adjacent seat body unit (5), a second limiting hole (11) and a first limiting hole (10) matched with the limiting protrusion (7) respectively, and a second rivet (12) matched with the first long circular groove (6), and the artificial heart valve has a normal use original state and a one-way limiting expansion state.

A suturing device for minimally invasive surgery is disclosed. The suturing device has a head defining one or more ferrule holders and a tissue bite area. The device also has a first needle comprising a flywheel portion and one or more curved arms extending from the flywheel portion, each of the one or more curved arms comprising a ferrule engaging tip, wherein the first needle is pivotably coupled to the head. The suturing device further has a first actuator coupled to the first needle and configured to rotate it from a retracted position, where the ferrule engaging tip of each of the one or more curved arms starts away from the one or more ferrule holders, through the tissue bite area, and to an engaged position where the ferrule engaging tip of each of the one or more curved arms is operationally aligned with the one or more ferrule holders.

This invention provides a transcatheter valve prosthesis comprising a stent, a prosthetic valve component, and a paravalvular leakage prevention component. The paravalvular leakage prevention component is coupled to the stent and includes an inner skirt, an outer covering, a lumen, an opening, and a one-way valve. The inner skirt is disposed on an inner surface of the stent and has an inflow end and a downstream end. The outer covering surrounds an outer surface of the stent and has an inflow end and a downstream end, the inflow end being coupled to the inflow end of the inner skirt. The lumen is formed between the outer surface of the inner skirt and the inner surface of the outer covering. The opening is disposed between the inner skirt and the outer covering. The one-way valve includes a flap at the opening, the flap being configured to open to allow blood to flow into the lumen but prevent blood from flowing out of the lumen.

A delivery catheter is in various embodiments configured to deliver an anchoring device to a native valve annulus of a patient's heart, where the anchoring device can better secure a prosthesis at the native annulus. The delivery catheter may include a flexible portion configured to form a spiral shape in embodiments.

A delivery catheter is in various embodiments configured to deliver an anchoring device to a native valve annulus of a patient's heart, where the anchoring device can better secure a prosthesis at the native annulus. The delivery catheter may include a flexible portion configured to form a spiral shape in embodiments.

A stent is disclosed, in particular a stent (scaffold) or other luminal prosthesis comprising circumferential structural elements which provide a high strength after deployment and allow the scaffold to be stented, and / or allow the scaffold or luminal prosthesis to be expanded thereafter. The circumferential scaffold is typically formed from a non-degradable material and will be modified to expand and / or be stented after deployment.

This invention provides a valve repair device, a valve repair system, and its operating method. The lifting components are all rigid structures, with the proximal end of each lifting component rotatably connected to the distal end of a stop structure. The distal end of each lifting component is rotatably connected to the distal end of a drive rod, allowing the shape of the lifting components to change through axial movement of the drive rod. This enables the lifting components to lift, clamp, and release chordae tendineae within a 0°–360° range, reducing the number of product specifications and significantly increasing the flexibility and convenience of the surgeon's operation. Furthermore, during surgery, if the valve repair device gets caught on the chordae tendineae, the flexible structure allows for a larger angle and smaller diameter in the open state, making release easier.

Systems and methods are provided for performing tensionable knotless cardiac valve procedures. A locking ferrule that includes a one-way locking mechanism may be utilized as part of the tensionable knotless cardiac valve procedure for tensioning and locking one or more strands of suture. In other implementations, the one-way locking mechanism may be integrated as part of a prosthetic device or other surgical device that can be utilized in combination with the prosthetic device.

A medical device for treating a heart valve insufficiency, with an endoprosthesis which can be introduced into a patient's body and expanded to secure a heart valve prosthesis in the patient's aorta. In an embodiment, the endoprosthesis has a plurality of positioning arches configured to be positioned with respect to a patient's aorta and a plurality of retaining arches to support a heart valve prosthesis. The endoprosthesis includes a first collapsed mode during the process of introducing it into the patient's body and a second expanded mode when it is implanted.

The present invention discloses a clamping device for repairing a heart valve, which includes an elastic member located inside an opening / closing assembly, the elastic member is designed to be folded, and a pull wire is connected to the opposite side, and the two wings of the elastic member are provided with barbs, and the elastic member is pulled by the pull wire, and the two wings are pulled together, so that the barbs are retracted in the opposite direction from the state where the two wings protrude into the two wings along the extension direction of the barbs. When the device is in a raised state, the barbs can be hidden by the two wings, and when the leaflet enters the support structure, the barbs do not contact the leaflet, and when it is necessary to capture the leaflet, the barbs are exposed from the hidden state to capture and position the leaflet.

The present invention discloses a presettable artificial biological aortic valve which comprises a valve seat (1), a valve leaflet stent (2) and three valve leaflets (3) attached to the valve leaflet stent (2), wherein the valve seat (1) is a one-way limiting expandable annular metal seat; the head end of each seat body unit (4) is sequentially provided with a first rivet (7), a limiting protrusion (6) and a first long circular groove (5) from the outside to the inside; the tail end of each seat body unit (4) is sequentially provided with a second long circular groove (8) matched with the first rivet (7) at the head end of the adjacent seat body unit (4), a second limiting hole (10) and a first limiting hole (9) matched with the limiting protrusion (6), and a second rivet (11) matched with the first long circular groove (5). The presettable artificial biological aortic valve has an original preset state and a normal use state after one-way limiting expansion.

The present invention comprises a novel and safer mechanism of deployment using a self-positioning, self-centering, and self-anchoring method. To embody the present invention, a disk-based valve apparatus allowing the repositioning and retrieval of the implantable valve while working on a dysfunctional valve structure is disclosed. The disk-based valve apparatus may comprise one or more disks, either proximal or distal, a valve-housing component and a valve component. The one or more disks may be either proximal or distal, may be either connected to each other or disconnected from each other and may either be symmetrical or have different shapes and dimensions. The disk-based valve apparatus may be self anchoring, such as anchored by pressure from the one or more disk, or may be anchored using any anchoring.

The present disclosure provides an implant for placement at a target site within a living body, including a therapeutic device, a wireless sensor, and a connecting member. The therapeutic device is configured to be placed at the target site to enhance the physiological functions of the living body; the wireless sensor includes a monitoring element and a wireless signal transmission element; the monitoring element is configured to acquire target physiological parameters, and the wireless signal transmission element is configured to transmit the target physiological parameters acquired by the monitoring element to the exterior of the body; wherein the connecting member is configured to connect a housing of the wireless sensor to the therapeutic device in a manner that preserves a signal transmission path of the wireless signal transmission element.

Disclosed herein are various embodiments directed to a device for minimally invasive medical treatment. The device being a hollow tube with a first end, a second end, and one or more anchors configured to extend outward from the exterior of the hollow tube. The hollow tube having a plurality of cutouts on the exterior, wherein the cutouts allow the hollow tube to be flexible. Additionally, the hollow tube may have at least one snap mechanism configured to connect the first end and the second end together.

A prosthetic heart valve is provided with a cuff (85, 285, 400) having features which promote sealing with the native tissues even where the native tissues are irregular. The cuff may include a portion (90) adapted to bear on the LVOT when the valve is implanted in a native aortic valve. The valve may include elements (210, 211, 230, 252, 253) for biasing the cuff outwardly with respect to the stent body when the stent body is in an expanded condition. The cuff may have portions of different thickness (280) distributed around the circumference of the valve in a pattern matching the shape of the opening defined by the native tissue. All or part (402) of the cuff may be movable relative to the stent during implantation.

A mitral valve prosthesis is percutaneously and / or transapically deployed in at least two stages. In a first stage, a mitral annular ring platform adapted for percutaneous delivery is delivered to and anchored in the mitral valve annulus. In the second stage, a valved-stent mitral valve prosthetic device adapted for percutaneously delivery is delivered to the mitral valve annulus for mounting in the mitral annular ring platform. This approach provides a consistent platform for accepting valved-stent mitral valve prosthetic devices from different vendors to be used.

To provide valve repair, e.g., repair of an atrioventricular valve of a patient.SOLUTION: The invention provides an apparatus comprising an implantable annuloplasty structure (1152), which comprises a primary body portion and a contracting member (226). A contracting member fastener (1560) can surround the contracting member, and comprise a clamping structure that is biased toward assuming a closed state to clamp the contracting member passed therethrough. A stop (1570) can be removably coupled to the fastener, and maintain the fastener in an open state. A contracting-member uptake tool (1502) can comprise static and dynamic cutting elements (1510, 1520) and graspers (1505) configured to pull the stop proximally so that the stop pushes and moves the dynamic cutting element onto the static cutting element in order to facilitate severing the contracting member. Other applications are also provided.SELECTED DRAWING: Figure 1