Patent US3744062A successfully refreshed from Google Patents.
US3744062A
Expired / Lapsed
US
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Heart valve construction having a collagen cover encapsulation thereon
Assignee: Individual
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Filing: 1971-10-08
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Granted: 1973-07-10
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Expires: 1991-10-08
Abstract
Abstract An autogenous heart valve with three leaflets is formed by a mold having slick back-up segments positioned behind each leaflet while the heart valve is implanted in the human body until a collagen covering has been formed; the heart valve so formed is removed from the host body, the excess collagen and mold are removed and the valve is implanted in the correct valve position in the heart.
Inventors
- 👤 V Parsonnet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:00
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
A heart valve construction comprising: a. a ring, b. three posts on the ring generally parallel to the axis of the ring, c. an orifice in the top of each post, d. an open mesh fabric cover on the ring and posts, e. three arcuate edged fabric leaflets attached to the ring and the posts, f. a top hem on the leaflets, g. a tie passed through the hem, h. opposite ends of the ties attached to the orifices, i. a collagen cover on the ring, posts, cover and leaflets, j. a slick collagen ventral face on each leaflet.
Claim 2
Dependent Claim
99 words
A heart valve construction comprising: a. a ring, b. three posts on the ring generally parallel to the axis of the ring, c. an orifice in the top of each post, d. an open mesh fabric cover on the ring and posts, e. three arcuate edged fabric leaflets attached to the ring and the posts, f. a top hem on the leaflets, g. a tie passed through the hem, h. opposite ends of the ties attached to the orifices, i. a collagen cover on the ring, posts, cover and leaflets, j. a slick collagen ventral face on each leaflet.
Claim 3
Dependent Claim
26 words
A heart valve construction according to claim 1, and the arcuate edges of the leaflets positioned on two posts and the intervening portion of the ring.
Claim 4
Dependent Claim
44 words
A heart valve construction according to claim 1, and the ties of sufficient length to hold the leaflets upright and to permit their upper edges and hems to meet together to form a closure responsive to ventral back pressure, but yieldable to dorsal pressure.
References Cited (Backward Citations)
US3445916A
Cited
US3514791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |