39 results about "Chordae tendinae" patented technology

For repairing a valve situated between an atrium and a ventricle of a heart of a subject, and having a first leaflet and a second leaflet, apparatus is provided that includes an implant and a delivery tool. The implant includes a flexible patch defining slots along an edge of the patch; a first anchor; and a second anchor. The delivery tool is adapted to transluminally deliver the implant to the heart; and implant the implant in the ventricle by securing the patch against a ventricular surface of the first leaflet by anchoring the first anchor to the first leaflet, and against a ventricular surface of the second leaflet by anchoring the second anchor to the second leaflet, such that (i) chordae of the valve extend through the slots, and (ii) the patch bridges a gap between the first leaflet and the second leaflet. Other embodiments are also disclosed.

Methods, apparatuses, and systems for performing a valve replacement or repair. Apparatuses may include systems and may include an outer catheter, one or more interchangeable inner catheters, a guidewire and an expandable chordae tendinae deflector. Also described herein are rapid pacing sheaths that may be used with any of these apparatuses and methods.

Methods and devices for transvascular prosthetic chordae tendinea implantation are disclosed. A catheter is advanced into the left atrium, through the mitral valve, and into the left ventricle. A ventricular anchor is deployed from the catheter and into a wall of the left ventricle, leaving a ventricular suture attached to the ventricular anchor and extending proximally through the catheter. A leaflet anchor is deployed to secure a mitral valve leaflet to a leaflet suture, with the leaflet suture extending proximally through the catheter. The leaflet suture is secured to the ventricular suture to limit a range of travel of the leaflet in the direction of the left atrium. Also disclosed is an assembled in situ mitral valve leaflet restraint, having a neo papillary muscle and a neo chordae tendinea.

Methods, apparatuses, and systems for performing a valve replacement or repair. Apparatuses may include systems and may include an outer catheter, one or more interchangeable inner catheters, a guidewire and an expandable chordae tendinae deflector. Also described herein are rapid pacing sheaths that may be used with any of these apparatuses and methods.

To provide a moving device capable of moving one member relative to the other member.SOLUTION: A moving device 1 according to an aspect of the present invention includes: a stationary member 10; a first tendon 20 which is coupled at one side thereof to the stationary member 10; a first movable member 30 which can move relative to the stationary member 10; a first sheath 40 which is coupled at one side thereof to the first movable member 30 and is formed to be passed through by the first tendon 20; a first holder 70 which fixes one of the other side of the first tendon 20 and the other side of the first sheath 40; and a first drive unit 80 which moves the other one of the other side of the first tendon 20 and the other side of the first sheath 40, wherein the first movable member 30 is formed to be movable relative to the stationary member 10 according to relative movement between the first tendon 20 and the first sheath 40.SELECTED DRAWING: Figure 1

The invention particularly relates to a chordae tendineae implanting device which comprises a capturing assembly with a base body, a first clamping piece and a second clamping piece, and the first end of the first clamping piece is pivotally connected with the base body. The second clamping piece is arranged on the side face, facing the base body, of the first clamping piece, the second clamping piece has a first state and a second state, and in the second state, the second clamping piece and the first clamping piece jointly clamp the valve. The first clamping piece is provided with a first position forming an angle with the base body and a second position driving the second clamping piece in the second state to abut against the base body, and when the first clamping piece is located at the first position, the second clamping piece can be switched between the first state and the second state. According to the chordae tendineae implanting device, through the matching structure of the base body, the first clamping piece and the second clamping piece, secondary clamping of a valve is achieved, and the problem that in the using process of an existing chordae tendineae implanting device, the valve is prone to slipping is solved.

The invention relates to the technical field of medical instruments, in particular to a forward torque self-locking mitral valve replacement valve stent which comprises an annular atrial umbrella disc and a plurality of flexible supporting parts which are sequentially connected in the circumferential direction to form the atrial umbrella disc. Due to the arrangement of the inner concave sections, the grid units form outer edge parts which are bent in the circumferential direction, and the bending direction of the outer edge parts is the instantaneous needle direction; the annular support anchoring disc is formed by sequentially connecting a plurality of anchoring arms in the circumferential direction, the circumferential bending direction of the anchoring arms is the same as the circumferential bending direction of the outer edge part, and the anchoring arms are matched with the grid units. The valve support has the advantages that the forward torque self-locking effect can be generated, the valve support continuously winds and hooks the chordae tendineae, the attaching force of the valve support and an original valve leaflet is kept, the valve is prevented from shifting and slipping, and the perivalvular leakage risk is reduced.

The present disclosure relates generally to the field of medical devices for grasping leaflets of a heart valve. In particular, the present disclosure relates to medical devices, systems, and methods for delivering artificial chordae in a patient. In one embodiment, a system can include a clip having a plurality of arms at a first end. The plurality of arms can have a closed configuration in which the arms are oriented toward one another and an open configuration in which the arms are oriented away from one another. A spring portion can be coupled to the plurality of arms at a second end configured to bias the arms to the closed configuration. The arms of the clip can be configured to fixedly engage a leaflet of the heart valve. The second end of the clip can be configured to be coupled to an artificial chordae.

Apparatuses and methods are described that include a delivery device that delivers a valve frame (120) to a native mitral valve and positions the valve frame (120) such that the center of the valve frame (120) is off-centered with respect to the center of an annular plane of the annulus and is positioned towards a posterior side of the annular plane. The arms (124) of the valve frame (120) are deployed between chordae tendineae of the native mitral valve. The valve frame (120) is rotated to cause the arms (124) to pull the leaflets of the native valve radially inward. The frame body (121) of the valve frame (120) expands radially to capture the native leaflet and cause the valve frame (120) to be deployed off-center with respect to the center of the annular plane. Other applications are also described herein.

The application discloses a tendon chord cutting catheter and relates to the technical field of medical devices. The tendon chord cutting catheter comprises a cutting part, a connecting part and an operating part. The end of the cutting part is a blunt round structure with a smooth outer convex surface. A cutting groove capable of hooking a tendon chord is arranged on the side wall of the cutting part close to the end. A cutting assembly is arranged at the opening of the cutting groove. One end of the connecting part is connected with the first end of the cutting part. The connecting part can drive the cutting part to enter a cutting area through a delivery catheter and move axially along the connecting part to complete the cutting of the tendon chord. The operating part is arranged outside an operated object and is connected with the end of the connecting part away from the cutting part. The operating part is used for operating the action of the connecting part and / or the cutting part. The tendon chord cutting catheter provided by the application has the advantages of small trauma, simple operation and reduced intraoperative mortality.

Methods, apparatuses, and systems for performing a valve replacement or repair. Apparatuses may include systems and may include an outer catheter, one or more interchangeable inner catheters, a guidewire and an expandable chordae tendinae deflector. Also described herein are rapid pacing sheaths that may be used with any of these apparatuses and methods.

A personalized naturally designed mitral valve prosthesis and a method for manufacturing the such to precisely fit a specific patient for which the valve prosthesis is made for, is provided. The method includes measuring size and shape of a mitral valve of the specific patient by using imaging means, building a 3D model of the personalized mitral valve prosthesis, optimizing the 3D model using FEM method and fabricating the personalized mitral valve prosthesis by cutting and connecting the annular ring, leaflets and chords to form a personalized prosthesis mitral valve.

Methods and devices for transvascular prosthetic chordae tendinea implantation are disclosed. A catheter is advanced into the left atrium, through the mitral valve, and into the left ventricle. A ventricular anchor is deployed from the catheter and into a wall of the left ventricle, leaving a ventricular suture attached to the ventricular anchor and extending proximally through the catheter. A leaflet anchor is deployed to secure a mitral valve leaflet to a leaflet suture, with the leaflet suture extending proximally through the catheter. The leaflet suture is secured to the ventricular suture to limit a range of travel of the leaflet in the direction of the left atrium. Also disclosed is an assembled in situ mitral valve leaflet restraint, having a neo papillary muscle and a neo chordae tendinea.

The present invention discloses a multifunctional mitral regurgitation simulation device and a construction method, the simulation device comprising: a base, the base having a first accommodating cavity penetrating the base body; a deformable bearing seat, the deformable bearing seat having a second accommodating cavity penetrating the deformable bearing seat body, the second accommodating cavity being connected to the first accommodating cavity; a simulated valve, the simulated valve being arranged on the deformable bearing seat and being located in the second accommodating cavity, the simulated valve having a simulated valve ring, the fixed end of the simulated valve leaflet being attached to the simulated valve ring, the free end of the simulated valve leaflet being connected with a simulated chordae, the deformable bearing seat being capable of providing a variable valve ring for the simulated valve; and an adjustment component, the adjustment component penetrating the side wall of the base and being connected to the simulated chordae. In the present invention, the multifunctional mitral regurgitation simulation device can simulate a variety of valve pathological states, and has good versatility for a variety of instruments and tests.

The utility model relates to an external cable steering gear which comprises an embedded pipe arranged in a concrete foundation, the embedded pipe deviates in the concrete foundation, a steering block is arranged on the inner wall of the upper end of the embedded pipe in a sleeved mode, a plurality of vertically-through installation holes are formed in the steering block, and a plurality of damping pipes are arranged in the installation holes in a sleeved mode in a one-to-one correspondence mode. A plurality of steel strands penetrate through the damping pipes in a one-to-one correspondence mode, the steel strands penetrating out of the damping pipes extend downwards and penetrate out of the embedded pipe, the cylindrical face of the outer wall of the steering block is arranged to be a steering conical face with the middle protruding outwards and the upper end and the lower end gradually recessed inwards, and the protruding position of the steering conical face is attached to the inner wall of the embedded pipe. The two ends of the steering conical surface are in clearance fit with the inner wall of the embedded pipe, upper and lower openings of the inner wall of the steering block are open and provided with chamfers, and the steel strand is in clearance fit with the chamfers of the steering block. According to the utility model, wrinkles and fractures of the steel strand after the wind power embedded pipe is embedded in a deviated manner can be effectively reduced.

The invention relates to a device (1) for placing an artificial mitral valve chorda (30), the device comprising: - a central body (10); - two end portions (12, 14) arranged on either side of the central body (10), each comprising a through-opening (122, 142) and comprising two jaws (124, 144) defining the corresponding opening (122, 142); it being possible for each end portion (12, 14) to be placed in two distinct configurations: - a first configuration in which the jaws are in a closed position, in which position an artificial chorda strand passing through the corresponding opening (122, 142) cannot pass between the corresponding jaws (124, 144); - a second configuration in which the jaws are in an open position, in which position an artificial chorda strand passing through the corresponding opening (122, 142) can pass between the corresponding jaws.

The present invention relates generally to the field of medical devices for treating heart disease. In particular, the present invention relates to medical devices, systems, and methods for delivering artificial chordae tendinae in a patient. A system for delivering a chordae tendinae into a heart can include a delivery catheter. A clip catheter can be configured to translate through the delivery catheter. An expander can be disposed on the clip catheter. A first clip can be at least partially contained in the expander in a closed configuration and can be attached to the chordae tendinae. An anchor catheter can be configured to translate through the delivery catheter and can have an anchor attached to the chordae tendinae. A sheath can extend over the anchor catheter and the anchor and can be configured to constrain arms of the anchor.

The present invention relates generally to the field of medical devices for delivering artificial chordae tendinae in a patient. A system for adjusting tension in an artificial chordae tendinae includes an artificial chordae tendinae couplable between a clip and an anchor. The clip is engageable with a leaflet of a heart valve and the anchor is engageable with a papillary muscle or heart wall. The anchor includes a body portion and a locking portion couplable with the artificial chordae tendinae and configured to allow movement of the artificial chordae tendinae in a first direction while preventing movement of the artificial chordae tendinae in a second direction opposite the first direction. An actuator is coupled to the locking portion to selectively release the locking portion to enable selective movement of the artificial chordae tendinae in the second direction.

Apparatuses, including systems, for performing a valve replacement or repair. Apparatuses may include an outer catheter, 2024 / 148366 one or more interchangeable inner catheters, a guidewire and an expandable chordae tendinae deflector. The outer catheter and inner catheter may be configured to engage with to prevent gaps. The inner catheter may include a chordae tendinae deflector. The outer catheter may be configured as a rapid pacing sheath that may be used with any of these apparatuses.WO

Apparatuses, systems, and methods for prosthetic valves. Embodiments of prosthetic valves may include sealing bodies configured for an anchor to at least partially pass through. The pass through may allow for the sealing body to seal to a portion of a patient's heart in the event of a miscapture of a leaflet by the anchor. Embodiments may include modular valve systems and prosthetic valves including anchors for coupling to chordae, trabeculae, or papillary structures of a patient's heart. Embodiments may include prosthetic valves including anchors for engaging calcification of a patient's native valve.

Disclosed herein are minimally invasive systems and methods for intravascularly accessing the heart and performing a transcatheter repair of a heart valve by inserting a suture as an artificial chordae into a heart valve leaflet. In various embodiments, such systems and methods can be employed in other heart valve repair procedures such an edge to edge repair to coapt leaflets by inserting one or more sutures that retain the leaflets in a coapted positioned or inserting a suture to repair a tear in a leaflet, for example.

The application relates to the field of medical devices, in particular to a heart valve prosthesis capable of being anchored with autologous leaflets, comprising a valve support, a leaflet clamping fixing device connected with the valve support, the leaflet clamping fixing device comprising a clamping mechanism and an anchoring ring, the proximal end of the clamping mechanism being connected with the valve support, the distal end of the clamping mechanism being free, and at least part of the anchoring ring being arranged on the clamping mechanism; after the valve support is installed in place, autologous leaflets are pulled by the anchoring ring, autologous leaflets or / and chordae tendineae tissues are clamped between the valve support and the leaflet clamping fixing device, and the anchoring ring is tightened around the valve support; in the scheme, the anchoring ring can also curl part of the autologous leaflets, reduces the influence of the original leaflet tissues on blood flow after replacement, solves two technical pain points in the treatment of mitral valve replacement in the prior art, and has good clinical significance.

Devices and methods including a frame (20) configured to support a prosthetic valve within a native atrioventricular valve are described. The frame (20) includes an atrial portion (26) and a cylindrical portion (22) to which prosthetic valve leaflets (23) are coupled. A plurality of chordal recruitment arms (24) extend radially from at least a ventricular end of the cylindrical portion (22). The chordal recruitment arms (24) are coupled to the ventricular end of the cylindrical portion by a suture (82), and the suture (82) is configured to act as a hinge such that, when released from a radially constrained configuration, the chordal recruitment arms (24) are configured to extend radially outward by pivoting about the suture (82) relative to the cylindrical portion (22) while the cylindrical portion (22) is held in at least a partially radially constrained configuration. Other applications are also described herein.

Disclosed in the present invention are a heart valve repair device, apparatus and system. The device is used as a carrier for an annuloplasty ring when the annuloplasty ring is implanted into a valve annulus, and comprises a first carrier, which matches the annuloplasty ring in terms of shape, wherein the first carrier is provided with a cord loop, which is configured to connect to an artificial tendinous cord; two ends of the cord loop are in a wound connection with a connecting unit, and a wound connection structure of the cord loop and the connecting unit is fitted with a limiting structure provided on the first carrier, so that the cord loop and the connecting unit can be stably connected to the first carrier; and when the connecting unit is pulled out from the connection with the cord loop, the cord loop can be disconnected from the first carrier, so that the cord loop can be pulled out from the connection with the artificial tendinous cord. By means of the present invention, an artificial tendinous cord can be separated from the cord loop without the need to cut the cord loop, such that the surgical difficulty of artificial tendinous cord implantation is reduced, the time required for surgical operations can be shortened, and possible safety risks resulting from cutting operations are avoided.

The present invention relates to an artificial heart valve, which comprises a valve stent, a first sealing film, a second sealing film, valve leaflets and valve leaflet anchoring members. The valve stent includes an inflow section and an outflow section. The first sealing film is arranged on the outermost side of the artificial heart valve and covers at least all regions corresponding to the outer surface of the inflow section. The second sealing film is attached to the inner side of the valve stent, and its upper edge is turned outwards from the upper edge of the inflow section and covers a part of the first sealing film to reduce paravalvular leakage. The valve leaflets are arranged inside the valve stent and are used to control the one-way flow of blood. The valve leaflet anchoring members are spiral-shaped and can be wound outside the chordae tendineae of the mitral / tricuspid valve and interact with the valve stent. By providing the first sealing film and the second sealing film, the artificial heart valve of the present invention can better fit with the native tissue after being implanted into the mitral / tricuspid valve, so as to effectively prevent the occurrence of paravalvular leakage.

This invention discloses a device and method for chordae tendineae-assisted mitral valve reconstruction, belonging to the field of minimally invasive cardiac surgical instruments. It includes a gripping component, a pressure bar sheath, a pressure bar, and a fixation frame. The innovative aspects of this invention are as follows: Innovative procedures: The traditional steps are simplified to "temporary fixation → assessment → final fixation," significantly shortening the operation time and improving the success rate; Precise control: The locking component can lock or release the pressure bar in real time at the gripping end, achieving stepless adjustment of the chordae tendineae height and preventing suture slippage; Repeatable adjustment: The tension of the chordae tendineae can be repeatedly fine-tuned during the operation, and the closure of the valve leaflets can be verified immediately, eliminating the need for repeated loosening and threading of sutures; Economical and safe: The overall structure is simple, resistant to high-temperature and high-pressure sterilization, and reusable, without increasing disposable consumables or patient costs; Minimally invasive compatibility: Particularly suitable for small-incision mitral valve repair techniques; This invention has outstanding advantages in simplifying the operation process, improving fixation accuracy, and reducing medical costs, and can be widely applied to various mitral valve chordae tendineae reconstruction surgeries.

An embodiment includes a chordal replacement system comprising: a pledget coupled to a first suture length and at least one of a first needle and a first ferrule; a second suture length coupled to the pledget and at least a second needle; and a third suture length coupled to the pledget and at least a third needle; wherein the second and third suture lengths are not monolithic with each other and do not constitute a single suture. Other embodiments are described herein.

The present invention relates to the field of medical devices, and in particular to an implant and a component for forming the implant, wherein the implant comprises an artificial chord and a papillary muscle anchoring element, wherein the artificial chord comprises an artificial chord body and a self-tightening structure for anchoring the valve leaflets formed at one end of the artificial chord body, and the other end of the artificial chord body is connected to the papillary muscle anchoring element. The implant of the present invention optimizes the valve leaflet fixation method of the artificial chord prosthesis, and can complete the fixation of the artificial chord and the valve leaflet through interventional surgery, without the need for thoracotomy, with minimal surgical trauma and rapid patient recovery. The self-tightening knot will not shift, reducing the friction between the knot and the valve leaflet, resulting in a small anchoring wound, minimal damage to the native valve leaflet, good anchoring effect, and stable reflux treatment effect; at the same time, it is conducive to the rapid endothelialization of the implant, better endothelialization effect, and will not change the anatomical morphology of the valve leaflet.

Methods and devices for transvascular prosthetic chordae tendinea implantation are disclosed. A catheter is advanced into the left atrium, through the mitral valve, and into the left ventricle. A ventricular anchor is deployed from the catheter and into a wall of the left ventricle, leaving a ventricular suture attached to the ventricular anchor and extending proximally through the catheter. A leaflet anchor is deployed to secure a mitral valve leaflet to a leaflet suture, with the leaflet suture extending proximally through the catheter. The leaflet suture is secured to the ventricular suture to limit a range of travel of the leaflet in the direction of the left atrium. Also disclosed is an assembled in situ mitral valve leaflet restraint, having a neo papillary muscle and a neo chordae tendinea.