US5449384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamic annulus heart valve employing preserved porcine valve leaflets
Assignee: Medtronic Inc
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Filing: 1992-09-28
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Granted: 1995-09-12
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Expires: 2012-09-28
Abstract
Abstract A prosthetic heart valve having a frame comprising a plurality of struts joined together at a common point and extending radially from the common point to free ends spaced from one another and a plurality of preserved tissue valve leaflets, each having a free edge, mounted to said frame means such that said free edges of said leaflets extend between the free ends of said frame struts. Each of the leaflets are provided with an associated strip of aortic tissue and the strips of aortic tissue are joined to one another to enclose the frame struts so that no synthetic materials are exposed to the bloodstream with the exception of suture material used to join the adjacent strips of aortic tissue.
Inventors
- 👤 Keith M. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:23
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2418; A61F2220/00; A61F2220/0025; A61F2220/0075
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
108 words
A prosthetic heart valve, comprising: a flexible frame means comprising a plurality of arcuate frame struts joined together at a common point and extending radially from said common point to free ends spaced from one another; and a plurality of preserved natural heart valve leaflets, each having a first free edge, mounted to said frame means such that said free edges of said leaflets extend between the said free ends of said frame struts wherein said leaflets are each provided with a second edge, having an associated strip of aortic tissue and wherein said strips of aortic tissue are joined to one another to enclose said frame struts.
Claim 2
Dependent Claim
108 words
A prosthetic heart valve, comprising: a flexible frame means comprising a plurality of arcuate frame struts joined together at a common point and extending radially from said common point to free ends spaced from one another; and a plurality of preserved natural heart valve leaflets, each having a first free edge, mounted to said frame means such that said free edges of said leaflets extend between the said free ends of said frame struts wherein said leaflets are each provided with a second edge, having an associated strip of aortic tissue and wherein said strips of aortic tissue are joined to one another to enclose said frame struts.
Claim 3
Dependent Claim
40 words
A valve according to claim 1 wherein each of said frame struts is provided with suturing means for allowing passage of sutures therethrough and wherein said strips of aortic tissue are joined to one another to cover said suturing means.
Claim 4
Dependent Claim
18 words
A valve according to claim 1 further comprising sutures, joining said strips of aortic tissue to one another.
Claim 5
Dependent Claim
31 words
A valve according to claim 1 wherein said strips of aortic tissue have edges and are joined to one another such that no said edges of said aortic tissue are exposed.
Claim 6
Dependent Claim
46 words
A prosthetic heart valve, comprising: a flexible frame means; and a plurality of preserved natural heart valve leaflets each provided with an edge having an associated strip of aortic tissue and wherein said strips of aortic tissue are joined to one another to enclose said frame.
Claim 7
Dependent Claim
46 words
A prosthetic heart valve, comprising: a flexible frame means; and a plurality of preserved natural heart valve leaflets each provided with an edge having an associated strip of aortic tissue and wherein said strips of aortic tissue are joined to one another to enclose said frame.
Claim 8
Dependent Claim
18 words
A prosthetic heart valve according to claim 5 wherein said strips of aortic tissue completely enclose said frame.
Claim 9
Dependent Claim
34 words
A valve according to claim 6 or claim 6 wherein said strips of aortic tissue have edges and are joined to one another such that no said edges of said aortic tissue are exposed.
Claim 10
Dependent Claim
40 words
A valve according to claim 5 or claim 6 wherein said frame is provided with suturing means for allowing passage of sutures therethrough and wherein said strips of aortic tissue are joined to one another to cover said suturing means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-09-11 | 1999-03-13 | 1999-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-11 | 2003-03-13 | 2003-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-11 | 2007-03-13 | 2007-09-12 | $7700.00 | Window Closed / Lapsed |