US3717883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cardiac valve replacement
Assignee: Techno Corp
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Filing: 1970-11-23
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Granted: 1973-02-27
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Expires: 1990-11-23
Abstract
Abstract A valve suitable for cardiac surgery to replace a diseased valve. The valve is made of a molded material which will be compatible with the human body. The valve has a generally hemispherical shape with annular grooves around its base. Rings are disposed in the grooves which merge with the base to define a concave peripheral groove. The concave groove is provided so that a soft fibrous material may be secured thereto allowing the entire assembly to be sutured in a flexible conduit such as a vein or a principal artery. The hemispherical part of the valve is divided into petals which will spread like the sections of an orange peel when fluid force is exerted in one direction. The petals will close when a force is exerted in the opposite direction.
Inventors
- 👤 F Mosher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:08
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7854; Y10T137/7879; Y10T137/788; Y10T137/7882; Y10T137/7883
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
181 words
A valve suitable for cardiac surgery to replace a diseased valve comprising a hollow generally hemispherical body terminating at its base in an annular rim, said annular rim having two spaced concentric grooves formed therein and being adapted to be attached to a soft material, a first ring and a second ring, each said ring being disposed in a said groove, said hemispherical body being divided into generally triangular petals defined by slits terminating adjacent the edges of said body, said petals being concave when viewed from below and fixed to said body adjacent the base thereof, said petals being attached to said rings and said petals and said ringS presenting a continuously curved surface curved about a relatively large radius, said body terminating in a first annular surface, each said ring having a second annular surface adjacent said first annular surface, said triangular petals each having an apex adjacent the apex of said hemispherical member, said first annular surfaces and said second annular surfaces merging together and having substantially the same radius of curvature and forming a single continuous surface.
Claim 2
Dependent Claim
181 words
A valve suitable for cardiac surgery to replace a diseased valve comprising a hollow generally hemispherical body terminating at its base in an annular rim, said annular rim having two spaced concentric grooves formed therein and being adapted to be attached to a soft material, a first ring and a second ring, each said ring being disposed in a said groove, said hemispherical body being divided into generally triangular petals defined by slits terminating adjacent the edges of said body, said petals being concave when viewed from below and fixed to said body adjacent the base thereof, said petals being attached to said rings and said petals and said ringS presenting a continuously curved surface curved about a relatively large radius, said body terminating in a first annular surface, each said ring having a second annular surface adjacent said first annular surface, said triangular petals each having an apex adjacent the apex of said hemispherical member, said first annular surfaces and said second annular surfaces merging together and having substantially the same radius of curvature and forming a single continuous surface.
Claim 3
Dependent Claim
26 words
The valve recited in claim 1 wherein said petals have a wire mesh molded therein, said wire mesh biasing said valve petals toward a closed position.
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) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |