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Percutaneously deliverable heart valve including folded membrane cusps with integral leaflets

A technology of artificial heart valve and cusp valve, which is used in heart valve, medical science, prosthesis, etc.

Active Publication Date: 2013-11-13
COLIBRI HEART VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] These issues illustrate some of the challenges to forming a PHV; namely, how to confine the functioning leaflets within a partially sealed tubular structure, while maintaining a single valve and leaflet geometry (such as the separate and unique upper and lower parts of a native valve). geometry) maintain ideal valve opening and closing behavior without benefiting from the natural mechanisms of the Valsalva sinus

Method used

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  • Percutaneously deliverable heart valve including folded membrane cusps with integral leaflets
  • Percutaneously deliverable heart valve including folded membrane cusps with integral leaflets
  • Percutaneously deliverable heart valve including folded membrane cusps with integral leaflets

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Embodiment Construction

[0072] One or more embodiments of one or more inventions described herein include an implantable prosthetic heart valve having a frame and two or more cusp and leaflet structures mounted to the frame. The frame preferably comprises a generally tubular lattice of alloy metal mesh. The cusp and leaflet structure includes membranes that are operable to open and close, thereby providing a properly functioning valve when mounted within a frame. In at least one embodiment, the membrane preferably comprises a flat sheet of processed mammalian tissue membrane folded into a generally conical shape according to a flat fold pattern.

[0073] In the ensuing description and reference figures, it will be seen that when applied to a dry membrane, the folds initially result in the cusp shape of an inverted pyramid with a rhomboid base. When the creases relax as occurs naturally (especially when the membrane is hydrated) because of the flexible and flexible membrane, the cusp shape becomes ge...

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Abstract

A transcatheter, percutaneously implantable, prosthetic heart valve is provided that comprises a lattice frame and two or more integrated cusp and leaflet folded structures attached to the lattice frame. The two or more integrated cusp and leaflet folded structures each comprise a flat sheet of biocompatible membrane that is folded to include a substantially conical shape according to a flat folding pattern. The substantially conical shape is further formed by joining apposing sides of the substantially conical shape along a seam. The two or more integrated cusp and leaflet folded structures are each attached along their respective seams to the lattice frame in a direction substantially parallel to an axis of the lattice frame. Embodiments of valves described herein have application within the entire vascular system.

Description

technical field [0001] The present invention relates to the field of medical devices, and more particularly to percutaneously deliverable heart valves. Background technique [0002] Native heart valves, and especially the aortic valve, have a complex geometry that is anatomically connected by the tubular inflow structure of the left ventricular outflow tract and between the valve flaps defined by the aortic annulus, the fibrous "skeletal" part of the heart. The expansion of the valve sinuses above the hinge points of the leaflets imparts ideal both opening and closing geometry. [0003] For purposes of discussion and definition in the ensuing description, the "superior", downstream outlet structure of the native aortic valve above its hinge point contains a three-valve "cusp" of roughly spherical outline with The central movable portion induces the leaflets to converge centrally to close and move radially outward to open during valve operation by fluid pressure gradients. ...

Claims

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Application Information

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IPC IPC(8): A61F2/24
CPCA61F2230/0054A61F2/2418A61F2220/0075A61F2/2415
Inventor D.R.菲什E.因杜尼D.帕尼亚瓜
Owner COLIBRI HEART VALVE
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