15 results about "Cardiac valve prosthesis" patented technology

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).

An interventional delivery device for a heart valve prosthesis, and a threading member (101) of the delivery device. The interventional delivery device for the heart valve prosthesis comprises: an outer tube (103); an inner tube (102) located in the outer tube (103); a threading member (101) provided on the inner tube (102), the threading member (101) being provided with a threading hole (114) and a positioning portion (111); a suture end positioning member (105), one end of the suture end positioning member (105) being detachably positioned in the positioning portion (111) of the threading member (101); and a traction member (106), one end of the traction member (106) passing through the threading hole (114) to be connected to a heart valve prosthesis (104) and to be connected to the suture end positioning member (105), and the other end of the traction member extending out of the outer tube (103). By means of such an arrangement, the relative position of the heart valve prosthesis (104) and the heart can be adjusted, thereby improving the implantation accuracy of the heart valve prosthesis (104).

The disclosure relates to heart valve prostheses with the reduced need of pacemaker implantation and / or improved means for positioning the replacement heart valve. A heart valve prosthesis is provided with a stent and at least one locator. The locator has an adapted design for positioning within a cusp of the native aortic valve for implantation at the native heart valve site. Placement of the locators within the cusps preferably prevents movement from the native heart valve site post-implantation, including proximal movement of the prosthesis into the left ventricle.

This invention provides a loading system and loading method. The loading system includes a main body, a receiving plate, and a receiving tube. The main body has a gripping channel extending through it axially. The receiving plate has a first central through hole extending through it axially. A plurality of first limiting grooves are circumferentially spaced along the first central through hole on one end face of the receiving plate. The first limiting grooves extend radially along the first central through hole. A plurality of second limiting grooves are circumferentially spaced on the inner wall of the receiving tube. The second limiting grooves extend through it axially. One end of the receiving plate with the first limiting grooves can be connected to the main body, and the receiving tube can be connected to the end of the receiving plate away from the main body, so that the lumen of the receiving tube, the first central through hole, and the gripping channel are coaxially connected, and the plurality of second limiting grooves are arranged in a one-to-one correspondence with the plurality of first limiting grooves. By using the loading system to grip a heart valve prosthesis with a flange and a gripper, and loading the gripped heart valve prosthesis into the delivery device, the loading quality can be effectively improved.

A prosthetic heart valve assembly includes a heart valve prosthesis including an annular frame extending along a valve axis between a first valve end of the heart valve prosthesis and a second valve end of the heart valve prosthesis. The annular frame includes a plurality of frame members and is adjustable between a radially-collapsed configuration and a radially-expanded configuration. The heart valve prosthesis includes a plurality of prosthetic leaflets attached to the annular frame. The prosthetic heart valve assembly includes an anchoring element positioned within the heart valve prosthesis. The anchoring element includes a support frame that contacts the annular frame and applies an outward radial force to the annular frame in a radial direction away from the valve axis. Methods of implanting a heart valve prosthesis are provided.

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 embodiment of the application provides a heart valve stent, a heart valve prosthesis and a preparation method thereof, and belongs to the technical field of medical devices. The heart valve stent comprises a first valve frame and a second valve frame. The first valve frame comprises a first valve frame body and a plurality of first valve corners. The first valve frame body defines a flow channel for blood circulation. The plurality of first valve corners are distributed along the circumference of the first valve frame body and are located on the same side of the first valve frame body in the axial direction. The second valve frame comprises a plurality of second valve corners for connecting valve leaflets. The plurality of second valve corners have the same extension direction in the axial direction as the first valve corners and correspond to the first valve corners in the circumferential direction. The second valve frame is arranged on the radially inner side of the first valve frame. The second valve frame and the first valve frame are connected after being shaped, and the second valve corners are connected with the corresponding first valve corners. The heart valve stent is beneficial to reducing the difficulty of covering the membrane, improving the covering effect of the heart valve stent, and prolonging the service life of the heart valve stent.

This invention provides a tether adjuster and its method of use. The tether adjuster includes a housing, a clamping mechanism, and a tension adjusting mechanism. The clamping mechanism is connected to the distal end of the housing and is capable of clamping an apical pad. The apical pad is used to connect to the proximal end of the tether, and the distal end of the tether is connected to a heart valve prosthesis. The clamping mechanism includes a first driving part and a jaw. The jaw includes two clamping arms symmetrically arranged circumferentially on the housing. The first driving part is connected to the two clamping arms respectively and is used to drive the distal ends of the two clamping arms to move in a direction of mutual approach to open the jaw, or to drive the distal ends of the two clamping arms to move in a direction of mutual approach to close the jaw. The tension adjusting mechanism is connected to the housing and to the proximal end of the tether, and is used to drive the proximal end of the tether to move relative to the heart valve prosthesis to adjust the tension of the tether. When adjusting the tension of the tether using the tether adjuster, two symmetrically arranged clamping arms are used to clamp the apical pad, so that the apical pad is subjected to symmetrical and balanced clamping force, maintaining the stability of the apical pad. This allows the operator to manipulate the tension adjustment mechanism to move the proximal end of the tether and thus adjust the tension of the tether.

The application relates to the technical field of medical devices, and provides an artificial heart valve leaflet and a heart valve prosthesis, which comprise a valve leaflet body and a first edge reinforcing part; the valve leaflet body comprises a free edge part; a laminated structure is formed between the first edge reinforcing part and the free edge part; the first edge reinforcing part is formed by extending the free edge part, or the first edge reinforcing part is connected to the free edge part. In the application, the first edge reinforcing part is arranged, and the laminated structure is arranged between the first edge reinforcing part and the valve leaflet body, so that the stress performance of the edge of the valve leaflet body used for participating in the valve closing action can be improved, the application reliability of the artificial heart valve leaflet can be improved, and the service life of the artificial heart valve leaflet can be prolonged.

To provide a device for implanting a prosthesis for a heart valve.SOLUTION: A device for implanting a heart prosthesis having a central body (16) and a containment portion having one or more sub-components (22) comprises a release device for the central body capable of being inserted into a catheter, and a connection operation assisting device for assisting connection operation between the central body (16) and the sub-components of the containment portion. The connection operation assisting device comprises a catheter assembly including at least two catheters for each sub-component of the containment portion, the catheters being partly joined to each other and each having at least one free end.SELECTED DRAWING: Figure 16

The present application relates to a multi-part replacement heart valve prosthesis. The replacement mitral valve prosthesis includes a support structure and a valve body having three flexible leaflets. The support structure preferably includes an inner valve frame and an outer sealing frame. The valve frame supports the flexible leaflets. The sealing frame is adapted to conform to the shape of a native mitral annulus. The sealing frame can be coupled to an inlet end of the valve frame, an outlet end of the valve frame, or both. A plurality of anchors are coupled to the outlet end of the valve frame. The anchors extend radially outward to be disposed behind native leaflets. The prosthesis preferably includes a skirt disposed along an exterior of the outer sealing frame. The prosthesis is collapsible for delivery into the heart by a delivery catheter. The prosthesis is configured to self-expand for deployment in the heart upon release from the delivery catheter.