US4055861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support for a natural human heart valve
Assignee: Rhone Poulenc Industries SA
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Filing: 1976-04-09
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Granted: 1977-11-01
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Expires: 1996-04-09
Abstract
Abstract A support for a natural human heart valve is disclosed, said support consisting of an annular or part annular semi-rigid frame having the shape of at least a substantial portion of the periphery of said natural heart valve at the base of its cusps, the frame being completely or partly enclosed in a textile sheath, the frame and the sheath being formed of a bio-compatible material and being deformable after implantation. The frame and sheath may be flexurally deformable, and are extensible by 0.001 times to 0.3 times their length. Preferably, the frame has the same flexural elasticity as an annular bundle or 2 to 8 turns of a cylindrical bristle or poly(ethylene terephthalate) and having a circumference equal to 0.025 times the length of one turn. The frame may be formed of at least one strand of bristle. The frame and the sheath may be in the form of a portion of a convex curve.
Inventors
- 👤 Alain Carpentier
- 👤 Xavier Leclercq
- 👤 Jean Paris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:13
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2442; A61F2/2445; A61F2/2448; Y; Y10; Y10S; Y10S623/00; Y10S623/90
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
82 words
A support for a natural human heart valve, said support consisting of a partannular semi-rigid frame defining a longitudinal axis along its length and having the shape of at least a substantial portion of the periphery of said natural heart valve at the base of its cusps, the frame being at least partly enclosed in a textile sheath, the frame and the sheath being flexurally deformable in all directions about the longitudinal axis of the frame and formed of a biocompatible material.
Claim 2
Dependent Claim
82 words
A support for a natural human heart valve, said support consisting of a partannular semi-rigid frame defining a longitudinal axis along its length and having the shape of at least a substantial portion of the periphery of said natural heart valve at the base of its cusps, the frame being at least partly enclosed in a textile sheath, the frame and the sheath being flexurally deformable in all directions about the longitudinal axis of the frame and formed of a biocompatible material.
Claim 3
Dependent Claim
22 words
A support according to claim 1, wherein the frame and the sheath are extensible by 0.001 times to 0.3 times their length.
Claim 4
Dependent Claim
42 words
A support according to claim 1, wherein the frame has the same flexural elasticity as an annular bundle of 2 to 8 turns of a cylindrical bristle of poly(ethylene terephthalate) having a circumference equal to 0.025 times the length of one turn.
Claim 5
Dependent Claim
18 words
A support according to claim 1, wherein the frame is formed of at least one strand of bristle.
Claim 6
Dependent Claim
23 words
A support according to claim 1, wherein the frame and the sheath are in the form of a portion of a convex curve.
Claim 7
Dependent Claim
33 words
A support according to claim 5, wherein the distance between the extremities of the said portion of the convex curve is between one quarter and one half the length of the said portion.
Claim 8
Dependent Claim
20 words
A support according to claim 1, wherein the frame and the sheath are in the form of an annular ring.
Claim 9
Dependent Claim
19 words
A support according to claim 7, wherein the frame is formed of at least two turns of a bristle.
Claim 10
Dependent Claim
82 words
A support for a natural human valve, said support consisting of an elongated flexurally deformable frame having a longitudinal axis curved along its length to define a generally ring-shaped frame having the shape of at least a substantial portion of the periphery of a natural heart valve at the base of its cusps, said frame being substantially enclosed in a textile sheath, said frame and sheath being formed of biocompatible material and being flexurally deformable in all directions about said longitudinal axis.
Claim 11
Dependent Claim
82 words
A support for a natural human valve, said support consisting of an elongated flexurally deformable frame having a longitudinal axis curved along its length to define a generally ring-shaped frame having the shape of at least a substantial portion of the periphery of a natural heart valve at the base of its cusps, said frame being substantially enclosed in a textile sheath, said frame and sheath being formed of biocompatible material and being flexurally deformable in all directions about said longitudinal axis.
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) | 1980-10-31 | 1981-05-02 | 1981-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-31 | 1985-05-02 | 1985-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-31 | 1989-05-02 | 1989-11-01 | $7700.00 | Window Closed / Lapsed |