Patent US5156621A successfully refreshed from Google Patents.
US5156621A
Expired / Lapsed
US
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Stentless bioprosthetic cardiac valve
Assignee: Individual
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Filing: 1991-03-15
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Granted: 1992-10-20
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Expires: 2011-03-15
Abstract
Abstract A self-supporting cardiac valve bioprosthesis of the type fixable to the patient's aortic ring for replacing an explanted valve. The bioprosthesis consists of a tubular body having a flow passageway therethrough and having a proximal and a distal end. A multi-valve obturator is located adjacent the proximal end of the tubular body for closing the flow passageway. Each valve of the multi-valve obturator is capable of rotating about a fulcrum adjacent an outer circumference of the flow passageway. A suture ring is provided having a continuous annular cord forming the fulcrum of each valve of the multi-valve obturator which cord is directly fixable to a patient's aortic ring. A textile coating compatible with the human body coats the outer surface of the tubular body and the continuous annular cord.
Inventors
- 👤 Jose A. Navia
- 👤 Domingo S. Liotta
- 👤 Felix O. Caivano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:26
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
125 words
A self-supporting stentless cardiac valve bioprosthesis of the type fixable to a patient's aortic ring for replacing an explanted valve comprising: a tubular body of animal origin defining a flow passageway therethrough having a proximal and a distal end; a multi-valve obturator adjacent the proximal end of the tubular body for closing the flow passageway, each valve of the multi-valve obturator capable of rotating about a fulcrum adjacent an outer circumference of the flow passageway; a suture ring having a continuous annular cord disposed adjacent the fulcrum of each valve of the multi-valve obturator and being directly fixable to the patient's aortic ring; and a textile coating compatible with the human body coating an outer surface of the tubular body and said continuous annular cord.
Claim 2
Dependent Claim
125 words
A self-supporting stentless cardiac valve bioprosthesis of the type fixable to a patient's aortic ring for replacing an explanted valve comprising: a tubular body of animal origin defining a flow passageway therethrough having a proximal and a distal end; a multi-valve obturator adjacent the proximal end of the tubular body for closing the flow passageway, each valve of the multi-valve obturator capable of rotating about a fulcrum adjacent an outer circumference of the flow passageway; a suture ring having a continuous annular cord disposed adjacent the fulcrum of each valve of the multi-valve obturator and being directly fixable to the patient's aortic ring; and a textile coating compatible with the human body coating an outer surface of the tubular body and said continuous annular cord.
Claim 3
Dependent Claim
20 words
The bioprosthesis as claimed in claim 1, wherein said multi-valve obturator has three valves corresponding to a natural aortic valve.
Claim 4
Dependent Claim
35 words
The bioprosthesis as claimed in claim 1, wherein the tubular body has notches extending from its distal end toward the proximal end defining therebetween skirts for anchoring the tubular body to a patient's aortic root.
Claim 5
Dependent Claim
16 words
The bioprosthesis as claimed in claim 1, wherein the multi-valve obturator is a porcine aortic valve.
Claim 6
Dependent Claim
38 words
The bioprosthesis as claimed in claim 1, wherein the continuous annular cord forming the fulcrum of each valve of the multi-valve obturator as well as an outer surface of the tubular body are coated by a synthetic fiber.
Claim 7
Dependent Claim
22 words
The bioprosthesis as claimed in claim 5, wherein the synthetic fiber is in the form of a thin polyester synthetic fiber cloth.
Claim 8
Dependent Claim
30 words
The bioprosthesis as claimed in claim 1, wherein the continuous annular cord is undulated, having a shape and size matching those of the aortic ring into which it is fixable.
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) | 1995-10-20 | 1996-04-20 | 1996-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-20 | 2000-04-20 | 2000-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-20 | 2004-04-20 | 2004-10-20 | $7700.00 | Window Closed / Lapsed |