Patent US4164046A successfully refreshed from Google Patents.
US4164046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve prosthesis
Assignee: MTRUST CORP NATIONAL ASSOCIATION
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Filing: 1977-05-16
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Granted: 1979-08-14
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Expires: 1997-05-16
Abstract
Abstract An improved valve prosthesis for mitral and tricuspid heart valves, the valve prosthesis being configurated as an open ring and covered with a double velour fabric having a laterally projecting fabric appendage for simultaneously facilitating suturing the prosthesis in place and improving tissue infiltration.
Inventors
- 👤 Denton A. Cooley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:09
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2442; A61F2/2445
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
121 words
A mitral valve prosthesis comprising in combination: an essentially symmetrical, elongated open ring comprising a spine having opposed ends, the ends being spaced one from the other a distance which is selected to permit unencumbered movement of the anterior leaflet of the mitral valve between the ends when the prosthesis is in place in the mitral valve annulus; and a double velour fabric sheath substantially encapsulating the spine, the double velour fabric being joined to the spine and extending laterally away from the open ring to form an appendage, both top and bottom of said appendage presenting double velour fabric so as to come into direct contact with surrounding tissue when the prosthesis is in place within the mitral valve annulus.
Claim 2
Dependent Claim
121 words
A mitral valve prosthesis comprising in combination: an essentially symmetrical, elongated open ring comprising a spine having opposed ends, the ends being spaced one from the other a distance which is selected to permit unencumbered movement of the anterior leaflet of the mitral valve between the ends when the prosthesis is in place in the mitral valve annulus; and a double velour fabric sheath substantially encapsulating the spine, the double velour fabric being joined to the spine and extending laterally away from the open ring to form an appendage, both top and bottom of said appendage presenting double velour fabric so as to come into direct contact with surrounding tissue when the prosthesis is in place within the mitral valve annulus.
Claim 3
Dependent Claim
109 words
A tricuspid valve prosthesis comprising: an asymmetrical, elongated open ring comprising a stiff spine having opposed ends, one of the ends bending through a greater arc than the other end and the ends being spaced one from the other a distance which is selected to permit unencumbered movement of the septal leaflet of the tricuspid valve between the ends when the prosthesis is in place in the tricuspid valve annulus; and a double velour fabric sheath substantially encapsulating the spine, the velour fabric being joined to the spine so as to come into direct contact with surrounding tissue when the prosthesis is in place within the tricuspid valve annulus.
Claim 4
Dependent Claim
109 words
A tricuspid valve prosthesis comprising: an asymmetrical, elongated open ring comprising a stiff spine having opposed ends, one of the ends bending through a greater arc than the other end and the ends being spaced one from the other a distance which is selected to permit unencumbered movement of the septal leaflet of the tricuspid valve between the ends when the prosthesis is in place in the tricuspid valve annulus; and a double velour fabric sheath substantially encapsulating the spine, the velour fabric being joined to the spine so as to come into direct contact with surrounding tissue when the prosthesis is in place within the tricuspid valve annulus.
Claim 5
Dependent Claim
49 words
A heart valve prosthesis comprising a spine portion comprising: a flexible fabric, initially straight though bendable into an open ring configuration, the length of the spine portion approximating the arcuate distance between commissures of a selected heart valve leaflet; and a velour sheath encapsulating the entire fabric spine portion.
Claim 6
Dependent Claim
49 words
A heart valve prosthesis comprising a spine portion comprising: a flexible fabric, initially straight though bendable into an open ring configuration, the length of the spine portion approximating the arcuate distance between commissures of a selected heart valve leaflet; and a velour sheath encapsulating the entire fabric spine portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-13 | 1983-02-12 | 1983-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-13 | 1987-02-12 | 1987-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-13 | 1991-02-12 | 1991-08-14 | $7700.00 | Window Closed / Lapsed |