Cardiac valve prosthesis

Abstract

A cardiac valve prosthesis including an armature for anchorage of the valve prosthesis at an implantation site. The armature defining a lumen for the passage of the blood flow and having a longitudinal axis, and a set of prosthetic valve leaflets supported by said armature and configured to move, under the action of blood flow, in a radially divaricated condition to enable the flow of blood through said lumen in a first direction, and in a radially contracted condition, in which said valve leaflets co-operate with one another and block the flow of blood through the prosthesis in the directionopposite said first direction. The armature including an annular part and a pattern of arched struts carried by said annular part, said pattern of arched struts having proximal ends connected to saidannular part, and distal ends spaced axially from the proximal ends and opposite said annular part, a plurality of sets of anchoring formations configured to protrude radially outwardly of said annular part, each set being supported by at least one of said annular part and a corresponding arched strut, and a plurality of support posts, each support post being supported by adjacent arched struts, wherein the sets of anchoring formations alternate with the support posts around said longitudinal axis.

Description

technical field [0001] The present disclosure relates to heart valve prostheses. More specifically, the present disclosure has been developed with reference to so-called "stented" heart valve prostheses, that is, characterized by a support structure and a prosthetic heart valve carried by the support structure, where the support structure is commonly referred to as an "armature". )” and are provided as support members. Background technique [0002] Some heart valve prostheses include a multileaflet prosthesis that is sewn, stitched, or otherwise permanently connected to a guard that defines a lumen for passing blood through the prosthesis. The shield is provided as a stent member and as such it exhibits a wide range of deformability. Typically, the guard of a stented heart valve prosthesis has a radially collapsed configuration intended for its delivery to and positioning at the implantation site (e.g., via a delivery instrument such as a catheter), and Radially expanded ...

AI Technical Summary

Problems solved by technology

This is clearly an undesirable situation, as the function of the natural heart valve replaced by the prosthesis cannot be restored, not to mention the damage this could do to the already suffering patient

[0005] In addition, radially protruding anchoring structures that may be provided on the guard of the prosthesis may affect the resistance to bending when the prosthesis is implanted in places such as the mitral annulus or the flat sinus of Valsalva

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