Methods and apparatuses for assembly of a pericardial prosthetic heart valve
First Claim
1. An assembly for constructing a leaflet for a prosthetic valve, comprising a first leaflet sewing plate having a first surface, a first layer of material adjacent to the first surface of the first leaflet sewing plate, a wall protection plate adjacent to the first layer of material, a second layer of material adjacent to the wall protection plate, and a second leaflet sewing plate adjacent to the second layer of material, wherein the first leaflet sewing plate forms a margin of attachment stitch pattern including a series of spaced apart holes through a thickness of the first leaflet sewing plate and suture channels through a thickness of the first leaflet sewing plate, respective ones of the channels connecting adjacent ones of the holes.
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Accused Products
Abstract
A method of assembling a prosthetic valve using sheets of material, such as pericardium material, polymer or bioengineered film, or other material. The method provides an accurate and repeatable system of making pericardial valves in which sheets or pieces of material are held securely in place relative to each other throughout the steps of assembling the valve. In addition, methods of the present invention include maintaining consistent alignment of the fixtures and pericardium material throughout the valve assembly process and utilize features that make the tooling components easy to assemble and handle. Certain aspects of the invention can be used to help establish a repeatable sewing and cutting technique for creating a pattern shape for valve leaflets, establishing stitch lengths, and determining the exact placement of stitches.
546 Citations
7 Claims
- 1. An assembly for constructing a leaflet for a prosthetic valve, comprising a first leaflet sewing plate having a first surface, a first layer of material adjacent to the first surface of the first leaflet sewing plate, a wall protection plate adjacent to the first layer of material, a second layer of material adjacent to the wall protection plate, and a second leaflet sewing plate adjacent to the second layer of material, wherein the first leaflet sewing plate forms a margin of attachment stitch pattern including a series of spaced apart holes through a thickness of the first leaflet sewing plate and suture channels through a thickness of the first leaflet sewing plate, respective ones of the channels connecting adjacent ones of the holes.
Specification