US3861416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heart valve
Assignee: Czech Academy of Sciences
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Filing: 1973-01-29
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Granted: 1975-01-21
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Expires: 1993-01-29
Abstract
Abstract A heart valve and method of making the same, the valve regulating the flow of fluid in a body passage. The valve comprises a substantially circular body having an outer ring portion and at least two interior flap portions. Each flap portion is pivotally secured to the ring along an axis represented by chords of the ring and being flexible to pivot in response to the flow of fluid in the passage. Means are located on each flap portion which are adapted to engage the wall of the ring portion to limit movement of the flap in one direction. The flaps are cooperatively shaped to close the interior of said body when they are pivoted in the one direction to their limit.
Inventors
- 👤 Otto Wichterle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:07
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2403; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7882; Y10T137/7885
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
164 words
A valve for regulating the flow of fluid in a body passage, comprising a valve body having an outer peripheral ring portion surrounding an interior flow passage defining a valve body inner wall and at least two interior flap portions pivotal in response to the flow of fluid therethrough, said flaps comprising a substantially polygonal shape having flexible edge portions shaped to cooperate with each other to jointly close the interior passage of said valve body when said flaps are pivoted in one direction and to open the interior passage of said valve body when said flaps are pivoted in the other direction, each of said flaps being pivotally secured to the inner wall of said peripheral ring along an axis represented by chords of said ring and having stop means located adjacent thereto for engagement with the wall of the ring portion for limiting movement of said flap to maintain said flaps closed in response to flow of fluid in the one direction.
Claim 2
Dependent Claim
164 words
A valve for regulating the flow of fluid in a body passage, comprising a valve body having an outer peripheral ring portion surrounding an interior flow passage defining a valve body inner wall and at least two interior flap portions pivotal in response to the flow of fluid therethrough, said flaps comprising a substantially polygonal shape having flexible edge portions shaped to cooperate with each other to jointly close the interior passage of said valve body when said flaps are pivoted in one direction and to open the interior passage of said valve body when said flaps are pivoted in the other direction, each of said flaps being pivotally secured to the inner wall of said peripheral ring along an axis represented by chords of said ring and having stop means located adjacent thereto for engagement with the wall of the ring portion for limiting movement of said flap to maintain said flaps closed in response to flow of fluid in the one direction.
Claim 3
Dependent Claim
40 words
The valve according to claim 1 wherein said means for limiting movement of said flaps comprise an enlarged portion integral with said flaps extending from the face of said flaps downstream of the flow of fluid in the one direction.
Claim 4
Dependent Claim
34 words
The valve according to claim 2 wherein said flaps are geometrically shaped so that their edges cooperatively abut and contact each other when said flaps are pivoted in said one direction to their limit.
Claim 5
Dependent Claim
27 words
The valve according to claim 2 wherein said flaps lie in a plane parallel to said ring portion when pivoted in said one direction to their limit.
Claim 6
Dependent Claim
38 words
The valve according to claim 2 including a peripheral wall extending about the edges of each of said flap members, said peripheral walls extending perpendicularly to the plane of said flap on the downstream side of said valve.
Claim 7
Dependent Claim
29 words
The valve according to claim 3, wherein said peripheral walls are formed of thin flexible material and are adapted to contact the wall of the correspondingly adjacent flap member.
Claim 8
Dependent Claim
34 words
The valve according to claim 2 wherein said flap members are connected to the ring portion by a hinge suspension made from flexible material to provide a continuous connection between flap and ring portion.
Claim 9
Dependent Claim
26 words
The valve according to claim 7 including a reinforcement member embedded within the ring portion and flap member and connecting the same across the hinge suspension.
Claim 10
Dependent Claim
21 words
The valve according to claim 8 wherein said reinforcement member is comprised of fibrous material oriented substantially in the radial direction.
Claim 11
Dependent Claim
21 words
The valve according to claim 2 wherein the flap member and ring portion are integrally formed of a unitary elastic material.
Claim 12
Dependent Claim
18 words
The valve according to claim 10 wherein said elastic material is a hydrophilic gel strongly swollen by water.
Claim 13
Dependent Claim
18 words
The valve according to claim 11 wherein the ring portion is provided with an annular steel reinforcing member.
References Cited (Backward Citations)
US2670757A
Cited
US2644663A
Cited
US2822819A
Cited
US3361858A
Cited
US3320972A
Cited
US3445916A
Cited
US3579642A
Cited
US3689942A
Cited
US3717883A
Cited
US3726446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |