US3723996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cloth covered heart valve with protected cage legs
Assignee: American Hospital Supply Corp
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Filing: 1971-12-07
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Granted: 1973-04-03
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Expires: 1991-12-07
Abstract
Abstract A cloth covering on the cage is protected on the inside surfaces of the cage legs by continuous metal track bars extending from the orifice ring to the apex of the cage. The track bars hold the movable valve member out of contact with the cloth to prevent wear on the cloth. In two embodiments the track bars form an inner metal cage nested in grooves in the legs of the main structural cage with the cloth coverings on the latter lining the grooves between the inner and outer cages. In another embodiment the track bars are of plastic material molded into the cloth coverings on the cage legs. In this embodiment the track bars project on both the inside and the outside of the cloth coverings and are held seated in grooves in the cage legs by the cloth coverings.
Inventors
- 👤 D Raible
- 👤 W Pierie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:55
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2409; A61F2/2421; A61F2/2424; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791; Y10T137/7913; Y10T137/7914
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
82 words
A heart valve comprising an orifice ring, a valve member movable to open and closed positions relative to said orifice ring, a cage having legs connected with said ring retaining said valve member, cloth coverings on said cage legs, continuous track bars extending along and substantially coextensive with the length of the inside edges of said cage legs holding said valve member away from contact with said cloth coverings, and means holding said track bars and said cage legs in assembled relationship.
Claim 2
Dependent Claim
82 words
A heart valve comprising an orifice ring, a valve member movable to open and closed positions relative to said orifice ring, a cage having legs connected with said ring retaining said valve member, cloth coverings on said cage legs, continuous track bars extending along and substantially coextensive with the length of the inside edges of said cage legs holding said valve member away from contact with said cloth coverings, and means holding said track bars and said cage legs in assembled relationship.
Claim 3
Dependent Claim
14 words
A heart valve as defined in claim 1, said cloth coverings comprising cloth tubes.
Claim 4
Dependent Claim
18 words
A heart valve as defined in claim 1, said cage legs having longitudinal grooves receiving said track bars.
Claim 5
Dependent Claim
22 words
A heart valve as defined in claim 3, said cloth coverings lining said grooves between said track bars and said cage legs.
Claim 6
Dependent Claim
28 words
A heart valve as defined in claim 1, said track bars being connected together at the apex of the cage forming an inner cage within said first cage.
Claim 7
Dependent Claim
20 words
A heart valve as defined in claim 5, said inner cage being connected to and supported by said first cage.
Claim 8
Dependent Claim
31 words
A heart valve as defined in claim 5, said orifice ring having an outwardly facing channel therearound and the legs of said first cage having hooked ends secured in said channel.
Claim 9
Dependent Claim
29 words
A heart valve as defined in claim 7 including pins on the ends of the legs of said first cage and socketS in said orifice ring receiving said pins.
Claim 10
Dependent Claim
17 words
A heart valve as defined in claim 7, said inner cage being integral with said orifice ring.
Claim 11
Dependent Claim
54 words
A heart valve as defined in claim 1, said cage legs having longitudinal grooves receiving said track bars, said cloth coverings lining said grooves between said track bars and said cage legs, and said track bars being connected together at the apex of said cage forming an inner cage nested in said first cage.
Claim 12
Dependent Claim
33 words
A heart valve as defined in claim 10, said first cage being a separate member mounted on said orifice ring and said inner cage being a separate member mounted on said first cage.
Claim 13
Dependent Claim
34 words
A heart valve as defined in claim 10, said inner cage being integral with said orifice ring and said first cage being a separate member mounted on said orifice ring and said inner cage.
Claim 14
Dependent Claim
26 words
A heart valve as defined in claim 1 including pins on the ends of said cage legs, and sockets in said orifice ring receiving said pins.
Claim 15
Dependent Claim
17 words
A heart valve as defined in claim 1, said track bars being molded into said cloth coverings.
Claim 16
Dependent Claim
21 words
A heart valve as defined in claim 14, said means securing said track bars to said legs comprising said cloth coverings.
Claim 17
Dependent Claim
18 words
A heart valve as defined in claim 14, said cage legs having longitudinal grooves receiving said track bars.
Claim 18
Dependent Claim
39 words
A heart valve as defined in claim 16, said track bars having portions on the inside of said cloth coverings projecting into said grooves and portions projecting from the outside of said cloth coverings to engage said valve member.
Claim 19
Dependent Claim
30 words
A heart valve as defined in claim 17, said orifice ring having an outwardly facing channel therearound and the legs of said cage having hooked ends secured in said channel.
References Cited (Backward Citations)
US3466671A
Cited
US3534410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |