212 results about "Native valve" patented technology

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.

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 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.

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.

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.

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.

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 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.

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 prosthetic heart valve for replacing a native valve includes a stent extending between a proximal end and a distal end and including a plurality of struts forming cells, the stent having a collapsed condition and an expanded condition. At least one runner is coupled a cell, the at least one runner being configured to transition from a first configuration to a second configuration when the stent moves from the collapsed condition to the expanded condition, the at least one runner projecting radially outwardly from the cell in the second configuration. A valve assembly is disposed within the stent, the valve assembly including a plurality of leaflets, a cuff at least partially disposed on a luminal surface of the stent, and a covering material disposed on an abluminal surface of the stent and covering the at least one runner in the second configuration.

The application discloses a heart valve device and relates to the technical field of artificial heart valves, which comprises an outer valve frame and a valve leaflet assembly connected to the inside of the outer valve frame, and the outer valve frame is a ring-shaped grid frame; the outer valve frame comprises an inflow side grid frame and an outflow side grid frame arranged in sequence from an inflow end to an outflow end, and the inflow side grid frame and the outflow side grid frame form an annular recess for clamping a native valve ring on the outer periphery of the outer valve frame; the outflow side grid frame comprises a plurality of groups of grid support units connected in sequence along the circumferential direction and enclosed into a ring, and the grid support unit comprises an outer convex grid support and an inner concave grid support, and the outer surface of the inner concave grid support is arranged in a concave manner relative to the outer surface of the outer convex grid support. In this way, the anterior leaflet of the original mitral valve can be attached to the inner concave grid support, the extrusion of the outer valve frame on the anterior leaflet is reduced, the anterior leaflet is prevented from being extruded to the left ventricular outflow tract by the outer valve frame, and the outflow area of the left ventricular outflow tract is prevented from being reduced to cause obstruction.

Systems, apparatus, and methods for axially aligning a prosthetic valve with a native valve to achieve implantation at a desired or selected deployment position. A delivery apparatus can include a shaft and a balloon on a distal end portion of the shaft. A prosthetic valve can be radially compressed around the balloon in a valve mounting portion of the delivery apparatus. The delivery apparatus can include a radiopaque marker array attached to the shaft in the valve mounting portion of the delivery apparatus. The markers in the marker array can be sized and spaced from adjacent ones of the markers such that they define locators in the array that are indicative of a plurality of deployment positions, and each locator can be aligned relative to a portion of a host structure to result in the prosthetic valve being implanted at a respective one of the deployment positions.

Docking devices for securing a prosthetic valve at a native valve are 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 may be attached to the coil by being coupled to at least a portion of a helical turn thereof. The docking devices include a atrial functional turn configured to enhance the transient stage stability of the docking device in the left atrium of the heart.

A catheter assembly for retaining a prosthetic valve as the prosthetic valve is guided to a point of delivery within a patient is provided with radioscopic markers. The markers are distributed within the catheter assembly such that an observer may discern a rotational orientation of the assembly from a radioscopic image of the assembly within the patient. Delivery of the prosthetic valve may include aligning the markers with the commissures of the prosthetic valve and radioscopic observation of the location or movement of the markers to rotationally align the prosthetic valve with a native valve within the patient, such as by aligning the commissures of the prosthetic valve with the commissures of the native valve.

A valve repair device, e.g., for treating mitral valve regurgitation, includes a tubular body defining a longitudinal axis, paddles supported by the tubular body and movable to change abduction of the paddles relative to the longitudinal axis, and retention members supported by the tubular body proximal the paddles and similarly movable to change abduction of the retention members relative to the longitudinal axis to facilitate capture of native valve leaflets between pairs of paddles and retention members. Movement of the paddles and / or retention members is provided by one or more control mechanisms including a collar a shaft extending within the tubular body. Each shaft is threadedly engaged to a respective collar and coupled to one or more of the movable elements such that, when the collar is rotated, the shaft translates to change abduction of the movable element relative to the longitudinal axis.

A capsule of a delivery system for a transcatheter heart valve prosthesis includes markers for rotationally orienting the capsule within a native valve. The capsule includes markers that are sized and located on the capsule such that when viewed in a cusp overlap viewing angle image, the markers indicate whether the capsule is in a desired rotational orientation. Methods for rotationally aligning a capsule of a delivery system containing a transcatheter heart valve prosthesis within a native valve are also provided.

The present application relates to a kind of trans-catheter heart valve replacement system, which is composed of artificial heart valve and valve anchoring device, wherein the valve anchoring device can be wrapped outside valve chordae tendineae, while capturing native valve leaflet, providing positioning point for subsequent implantation of artificial heart valve;Artificial heart valve can be implanted in heart, and replace the physiological function of native valve.The valve anchoring device and artificial heart valve can be matched and positioned, in order to prevent the two from being too tight and continuous extrusion, friction and causing chordae tendineae rupture, there are two kinds of cooperation between them: the first cooperation state, can let artificial heart valve and valve anchoring device abut each other, ensure the stability of structure and position when the two are matched with each other;Second cooperation state, there is gap between artificial heart valve and valve anchoring device at this time, so that native valve leaflet or chordae tendineae can pass through, to reduce the contact area between valve replacement system and chordae tendineae as much as possible, avoid extruding chordae tendineae.

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 discloses a self-expanding atrioventricular valve prosthesis device, comprising: a main body portion, which is a frame structure, and the main body portion is implanted at the native valve annulus of the heart. The main body portion includes an inflow section, an outflow section and a transition section. The inflow section is located at the atrial end, the outflow section is located at the ventricular end, and the transition section is located between the inflow section and the outflow section; it further includes at least one artificial valve leaf, which is fixed to the transition section of the main body portion, and the artificial valve leaf is provided with a connecting portion; it further includes a chordae tendineae portion, one end of which is fixed, and the other end is connected to the artificial valve leaf through the connecting portion. The present invention restricts the movement range of the artificial valve leaf through the chordae tendineae portion, and the connecting portion prevents the chordae tendineae portion from tearing and stress concentration on the valve leaf, thereby increasing the durability of the artificial valve leaf.

A prosthetic tricuspid heart valve system includes a collapsible anchor frame and a collapsible prosthetic heart valve. The anchor includes a support structure having a waisted central portion, and atrial and ventricular flared portions sized to clamp a native valve annulus. Atrial and ventricular sheets are coupled to the atrial and ventricular flared portions, and each include a central aperture. A generally cylindrical fabric valve-receiving member has an inflow end coupled to the atrial sheet and an outflow end coupled to the ventricular sheet to provide a conduit through the valve-receiving member between the atrial and ventricular sheet. The prosthetic heart valve may include a stent and a plurality of prosthetic leaflets, the prosthetic heart valve configured to be expanded into and received within the valve-receiving member of the anchor frame.

The application provides a valve anchoring device, a guide device and a method for anchoring a prosthetic valve, mainly comprising an anchoring structure and a positioning member, wherein the anchoring structure has a first anchoring member and a second anchoring member extending from both sides of a combination member, the positioning member is connectable to the combination member, the combination member passes through a commissure of a leaflet of a heart tissue, the positioning member is positioned at one side of a heart atrioventricular valve adjacent to an atrium, the first anchoring member and the second anchoring member are positioned at one side of the heart atrioventricular valve adjacent to a ventricle, and the first anchoring member and the second anchoring member are cooperatively matched to anchor the prosthetic valve, so that the prosthetic valve is positioned relative to a native valve of the heart tissue. Therefore, the anchoring effect of the prosthetic valve can be improved.

The aortic valve comprises a valve body, a limiting rod, a connecting structure and a connecting piece, and the limiting rod is arranged on the far end side of the connecting structure; before the valve body is completely released, the far end of the connecting structure is arranged close to the valve body, one end of the limiting rod extends in the direction away from the valve body and protrudes out of the outer side of the valve body, and the far end of the connecting piece can penetrate in from the near end of the connecting structure, penetrate out from the far end of the connecting structure and is detachably connected with the valve body. After the valve body is completely released, the limiting rod can abut against the native valve leaflet in the body so as to limit the aortic valve to move towards the ventricle, the connecting piece can be separated from the valve body, and the connecting piece, the connecting structure and the limiting rod can be retracted into the conveying system so that foreign matter implanted into the body can be reduced, and the inflammation degree and foreign body sensation can be reduced. And the aortic valve is recovered into the sheathing canal and is repositioned and released, so that the accuracy of positioning and releasing the aortic valve is improved.

A device is provided for securing a prosthetic valve at a native valve. The docking device can include a coil comprising a plurality of helical turns when in a deployed orientation. The docking device can include a compressible plug attached to the coil by being coupled to at least a portion of a helical turn thereof. The compressible plug is movable between a radially compressed state in a delivery orientation and a radially expanded state in the deployed orientation. The compressible plug includes: a compressible scaffold formed from a shape-memory material; and a plugging component operably coupled with the compressible scaffold to provide a liquid plugging function to the compressible plug.

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.

To provide methods and apparatuses for bisection of heart valve leaflets using a catheter having a cutting element.SOLUTION: The invention is a device, system, and method for repairing the heart valve function, which may include bisecting native valve leaflets for improved deployment of a prosthetic heart valve in the native valve annulus. The invention may include a catheter having a cutting element shaft with a cutting element configured to puncture a valve leaflet and / or make a controlled cut through the leaflet. The device may have an extendable foot configured to be positioned on an opposite side of the valve leaflet from the cutting element shaft. The device may include magnets to guide the cutting element and / or cutting element shaft in proper alignment with the extendable foot and to hold the elements in place during leaflet bisection.SELECTED DRAWING: Figure 7