An integrated valve prosthesis includes an anchor stent, a tether component, and a valve component. The anchor stent includes a self-expanding tubular frame member configured to be deployed in the annulus of an aortic valve or the aorta. The valve component includes a valve frame and a prosthetic valve coupled to the valve frame, and is configured to be deployed within the anchor stent. The tether component includes a first end coupled to the anchor stent and a second end coupled to the valve frame. In the delivery configuration, the tether component extends in a first direction from the anchor stent to the valve component, and in the deployed configuration, the tether component extends in a second direction from the anchor stent to the valve component. The second direction is generally opposite the first direction. The tether component may set the location of the valve component relative to the anchor stent.

Integrated valve assembly and method of delivering and deploying an integrated valve assembly

The invention discloses a valvular prosthetic replacement device with a buffer action and a stent. The stent comprises an aorta stent, a valve stent and a flowing channel stent. The stent is provided with a transition section stent and has a mesh-shaped cylindrical structure formed by sequentially connecting the aorta stent, the transition section stent, the valve stent and the flowing channel stent. The top edge of the aorta stent is provided with at least two fixing lugs. The top edges of the fixing lugs are different from each other in height. A transition section is arranged between the valvular prosthetic replacement device and the stent of the invention and can have a buffer action, protect the valve stent and an internal three-leafvalve and ensure seal performance for long-term use. The valvular prosthetic replacement device of the invention has good positioning effect, not only reduces the difficulty of surgery but also realizes recycling.

Valvular prosthetic replacement device with buffer action and stent

The utility model provides an artificial aortic valve support implanted through a catheter. The artificial aortic valve support comprises a support body and an artificial valve, wherein the support body is of a dumbbell-shaped structure formed by elastic fiber-shaped materials in a woven mode and comprises a head portion, a waist portion and a tail portion, a biological compatible film covers the outer surface of the head portion of the support body, and the tail portion of the support body is provided with an installation anchor. The utility model further provides a conveying system used for conveying the support. The conveying system is formed by an outer sheath, an inner core, a loader, a push rod and a fixing head, the installation anchor on the tail portion of the support body is installed on the fixing head, and the artificial valve is conveyed into a human body in a puncture method. The support body is more close to a physiological anatomical structure and can achieve self-expandable separation, the artificial biovalve is adopted and is close to the function of the artificial valve, the conveying system is formed through slight modification of a conveying system for congenital heart disease plugging devices, an instrument for interventional therapy structural heart diseases is gradually standardized and normalized, meanwhile resources are saved and consumption is reduced.

Artificial aortic valve support implanted through guide tube and conveying system thereof

The invention discloses an artificial aortic valve ring system, which is used for taking effects of supporting and fixing in trans-catheter aortic valve replacement on patients of aortic valve regurgitation without calcification. The system comprises a valve ring scaffold at distal end and anchoring legs at proximal end, wherein the valve ring scaffold is fixedly connected to the anchoring legs; the valve ring scaffold is of a tubular structure and has a gridding structure; the anchoring legs are arranged along the periphery of the valve ring scaffold and are embedded in a cavity structure on ascending aortic root so as to fix the system; and the system is capable of transforming between a first form of radial expansion and a second form of radial shrinkage. With the implantation of the system, the trans-catheter aortic valve replacement on patients of aortic valve regurgitation without calcification becomes possible.

Artificial aortic valve ring system implanted through peripheral arterial approach

The invention discloses a self-expansion intervention valve stent for preventing the coronary artery from being shielded, and relates to the field of intervention therapy equipment for cardiovasculardiseases. The intervention valve stent is composed of two parts including the upper end and the lower end; the upper end is composed of three arc supporting ribs, and the supporting ribs are of an annular structure and expand outwards from bottom to top; the lower end is composed of one circle of 6 or more quadrangular net-shaped structures in the circumferential direction. The cross section areaof the supporting ribs at the upper end is equal to or larger than that of metal ribs of the quadrangular structures at the lower end to provide radial support force with proper intensity. By means ofthe self-expansion intervention valve stent, the metal coverage area of the upper half part of the self-expansion intervention valve stent is reduced, and the coronary artery can be prevented from being shielded by the stent.

Self-expansion intervention valve stent for preventing coronary artery from being shielded

The invention relates to an aorta valve bracket with an anchoring foot, consisting of three parts: a dual-horn-shaped bracket (1), a valve (2) which is arranged inside the dual-horn-shaped bracket (2) and an anchoring foot (3); the dual-horn-shaped bracket (1) is divided into a near-core-end large bell mouth (11), a middle waist (12) and a far-core-end small bell mouth (13); the diameter of the waist (12) is less than that of the near-core-end large bell mouth (11) and the far-core-end small bell mouth (13); the valve (2) is oversewed between the far-core-end small bell mouth (13) and the middle waist (12); the anchoring foot (3) consists of a plurality of extended Ni-Ti wires (31) in inverted-shape and is arranged on the near-core-end large bell mouth (11). After the bracket of the invention is embedded, as the near-core-end anchoring foot exists, the displacement of the bracket generated by the blood flowing forwards is avoided, meanwhile, the mesh of the near-core-end is sparse, the opening of the coronary artery is not blocked; the mesh of the far-core-end is dense, thus providing powerful supporting force, effectively reducing the valve leakage and greatly improving the safety coefficient.

Yuan Bai

Papers

Aorta valve stent with anchoring foot