Patent US5379772A successfully refreshed from Google Patents.
US6475239B1
Expired / Lapsed
US
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Method for making polymer heart valves with leaflets having uncut free edges
Assignee: Corcym SRL
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Filing: 1998-10-13
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Granted: 2002-11-05
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Expires: 2018-10-13
Abstract
Abstract A method for manufacturing a prosthetic heart valve. An elastic valve body and at least one leaflet are formed on a mold. The leaflet has a free edge which is formed by the mold without cutting the leaflet at the free edge.
Inventors
- 👤 Louis A. Campbell
- 👤 Riyad Moe
- 👤 Edward J. Sarnowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:18
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2415; Y; Y10; Y10S; Y10S623/00; Y10S623/901
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
98 words
A method of manufacturing and implanting a prosthetic heart valve comprising: 1) providing a mold comprising a heart valve body portion and at least one leaflet portion integral with said valve body portion, said leaflet portion comprising a free edge portion; 2) forming a valve body having at least one polymeric leaflet in said mold, said leaflet comprising a free edge; 3) removing said valve body from said mold to obtain a heart valve having at least one leaflet with an uncut free edge; and 4) implanting said heart valve in a patient without cutting said free edge.
Claim 2
Independent Claim
98 words
A method of manufacturing and implanting a prosthetic heart valve comprising: 1) providing a mold comprising a heart valve body portion and at least one leaflet portion integral with said valve body portion, said leaflet portion comprising a free edge portion; 2) forming a valve body having at least one polymeric leaflet in said mold, said leaflet comprising a free edge; 3) removing said valve body from said mold to obtain a heart valve having at least one leaflet with an uncut free edge; and 4) implanting said heart valve in a patient without cutting said free edge.
Claim 3
Dependent Claim
94 words
The method of claim 1 wherein said providing step comprises: providing an outflow mold having a recess in the shape of the free edge of said leaflet, said outflow mold defining a generally concave outflow side of said leaflet and at least a portion of a generally convex inflow side of said leaflet adjacent said free edge of said leaflet; and providing an inflow mold defining another portion of said inflow side of said leaflet, said outflow mold and said inflow mold meeting at a separation line on said inflow side of said leaflet.
Claim 4
Dependent Claim
94 words
The method of claim 1 wherein said providing step comprises: providing an inflow mold having a recess in the shape of the free edge of said leaflet, said inflow mold defining a generally convex inflow side of said leaflet and at least a portion of a generally concave outflow side of said leaflet adjacent said free edge of said leaflet; and providing an outflow mold defining another portion of said outflow side of said leaflet, said inflow mold and said outflow mold meeting at a separation line on said outflow side of said leaflet.
Claim 5
Dependent Claim
56 words
The method of claim 1 wherein said providing step comprises: providing an outflow mold defining a generally concave outflow side of said leaflet; and providing an inflow mold defining a generally convex inflow side of said leaflet, said outflow mold and said inflow mold meeting at a separation line on said free edge of said leaflet.
Claim 6
Dependent Claim
96 words
The method of claim 1 wherein said providing step comprises: providing an inflow mold having a recess in the shape of the free edge of said leaflet, said inflow mold defining a generally convex inflow side of said leaflet and at least a portion of an outflow side of said leaflet adjacent said free edge of said leaflet, and said inflow mold terminating at a point spaced away from said free edge, said point forming a line along said outflow side of said leaflet; and wherein said method further comprises trimming said leaflet along said line.
Claim 7
Dependent Claim
12 words
The method of claim 1 wherein said forming step comprises dip casting.
Claim 8
Dependent Claim
13 words
The method of claim 1 , wherein said forming step comprises compression molding.
Claim 9
Dependent Claim
12 words
The method of claim 1 wherein said forming step comprises injection molding.
Claim 10
Dependent Claim
28 words
The method of claim 1 wherein said removing step further comprises the step of cutting an opening in the valve, said cutting occurring away from said free edge.
Claim 11
Dependent Claim
18 words
The method of claim 1 wherein said forming step comprises molding the leaflet in a partially open position.
Claim 12
Dependent Claim
18 words
The method of claim 1 wherein said forming step comprises molding the leaflet in a fully open position.
Claim 13
Independent Claim
92 words
A method of making and implanting a prosthetic heart valve comprising: providing a mold for a heart valve having a valve body and a plurality of polymeric leaflets, each of said leaflets comprising a free edge, said mold comprising a free edge portion for forming each said free edge independently of the other free edges; forming said valve body and said plurality of leaflets in said mold; removing said valve body and said leaflets from said mold without cutting any of said free edges; and implanting said heart valve in a patient.
Claim 14
Independent Claim
92 words
A method of making and implanting a prosthetic heart valve comprising: providing a mold for a heart valve having a valve body and a plurality of polymeric leaflets, each of said leaflets comprising a free edge, said mold comprising a free edge portion for forming each said free edge independently of the other free edges; forming said valve body and said plurality of leaflets in said mold; removing said valve body and said leaflets from said mold without cutting any of said free edges; and implanting said heart valve in a patient.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2005-11-04 | 2006-05-06 | 2006-11-05 | $2000.00 | Window Closed / Lapsed |
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