US4655773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicuspid valve prosthesis for an auriculo-ventricular cardiac aperture
Assignee: GE SV IN Srl A CORP OF ITALY
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Filing: 1985-06-20
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Granted: 1987-04-07
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Expires: 2005-06-20
Abstract
Abstract The disclosed prosthesis for replacement of the bicuspid or mitral valve in the left auriculo-ventricular aperture, or of the tricuspid valve in the right auriculo-ventricular aperture, is fitted to a semi-rigid ellipsoidal and reniform support which imitates the biological shape of the original organ. The moving part of the valve is fashioned from a single piece of biological, bio-compatible or polymeric material, and fabricated such that the sub-valve section is supported by two "suspenders" in order to ensure a singularly biological type of operation, with no drop in pressure incurred during the opening movement, and with minimal regurgitation during the closing movement.
Inventors
- 👤 Gino Grassi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:22
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2418
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
104 words
A bicuspid valve prosthesis for an auriculoventricular cardiac aperture comprising: a bio-compatible material stent having a substantially ellipsoidal basic loop shape and two prongs which depart perpendicularly from a greater diameter of the ellipsoidal basic loop, said prongs being sloped inwardly of the stent; and a moving valve part formed from a single piece of biocompatible material, the moving valve part having a cut out formed in the center thereof and being sutured to the stent, said single piece including two cusps adapted to operate simultaneously for opening and closing movements of the valve, and suspenders mounted on the prongs for supporting the cusps.
Claim 2
Dependent Claim
104 words
A bicuspid valve prosthesis for an auriculoventricular cardiac aperture comprising: a bio-compatible material stent having a substantially ellipsoidal basic loop shape and two prongs which depart perpendicularly from a greater diameter of the ellipsoidal basic loop, said prongs being sloped inwardly of the stent; and a moving valve part formed from a single piece of biocompatible material, the moving valve part having a cut out formed in the center thereof and being sutured to the stent, said single piece including two cusps adapted to operate simultaneously for opening and closing movements of the valve, and suspenders mounted on the prongs for supporting the cusps.
Claim 3
Dependent Claim
18 words
The bicuspid valve prosthesis as in claim 1 wherein the moving valve part is formed from biological material.
Claim 4
Dependent Claim
19 words
The bicuspid valve prosthesis as in claim 1 wherein the moving valve part is formed from a polymeric material.
Claim 5
Dependent Claim
37 words
The bicuspid valve prosthesis as in claim 1 which further comprises: a flexible sheath clad on the stent; and a woven polymer fabric clad on the flexible sheath for suturing the moving valve part to the stent.
References Cited (Backward Citations)
US3739402A
Cited
US4340977A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |