Heart valve stent and process for preparing a stented heart valve prosthesis
First Claim
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1. A stent for a natural tissue heart valve prosthesis comprising:
- a. an annular frame comprising three ventricular struts, two of which are biased radially inwardly and the third of which is biased radially inwardly but to a lesser degree than the other two or is generally parallel to the frame axis and three ventricularly relieved portions respectively interconnecting said struts; and
b. a fabric cover covering at least the exterior surface of the frame.
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Abstract
An anatomically configured stent for a tanned, expanded natural tissue heart valve, a valve prosthesis including the stent, and a process for preparing the prosthesis are disclosed. The stent comprises a frame having three struts, two of which are biased radially inwardly and the third of which is also biased radially inwardly or generally parallel to the frame axis and a fabric cover covering at least the exterior of the frame, the cover having a bead along its perimeter that provides a site for attachment of the valve to the stent.
1098 Citations
17 Claims
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1. A stent for a natural tissue heart valve prosthesis comprising:
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a. an annular frame comprising three ventricular struts, two of which are biased radially inwardly and the third of which is biased radially inwardly but to a lesser degree than the other two or is generally parallel to the frame axis and three ventricularly relieved portions respectively interconnecting said struts; and b. a fabric cover covering at least the exterior surface of the frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Process for preparing stented heart valve prostheses for implantation in human patients comprising:
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a. procuring a series of fresh porcine heart valves that are representative of the size variation in human heart valves; b. tanning said series of porcine heart valves; c. preparing positive molds of the exterior configuration of each valve of the series; d. casting stents from each of said molds whereby a series of stents that have interior configurations that are substantially the negative of the configurations of the exteriors of said series of valves are formed; e. procuring a fresh porcine heart valve; f. tanning the valve of (e); g. selecting a stent from said series of stents that most closely accommodates the valve of (f); and h. affixing the valve of (f) within the selected stent. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification