Patent US4011601A successfully refreshed from Google Patents.
US4011601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prosthetic heart valve
Assignee: Research Corp
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Filing: 1975-10-14
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Granted: 1977-03-15
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Expires: 1995-10-14
Abstract
Abstract A prosthetic heart valve wherein the occluder member is of high camber air-foil-like configuration which assists in creating vortices in the blood flow pattern into the ventricular cavity. The formed vortices aid in cleansing the cavity and in closing the valve during contraction of the cavity.
Inventors
- 👤 Michael Francis Clune
- 👤 John Richard Shanebrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:54
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2403; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7903
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
133 words
A prosthetic heart valve comprising a base member and an occluder disc having upstream and downstream curvilinear faces, the downstream face being concave, and the upstream face being convex, said concave and convex faces defining a high camber airfoil-like structure having leading and trailing edge portions, means supporting the occluder disc for (a) movement longitudinally downstream relative to the base member to move the upstream face out of seating engagement with said base member, and (b) rotational movement about an axis between the leading and trailing edges of the disc and means on said base member providing a seat for the marginal portion of the upstream curvilinear face of the disc said seat providing means having a curved profile that matches the curved profile of the upstream curvilinear face of the occluder disc.
Claim 2
Dependent Claim
133 words
A prosthetic heart valve comprising a base member and an occluder disc having upstream and downstream curvilinear faces, the downstream face being concave, and the upstream face being convex, said concave and convex faces defining a high camber airfoil-like structure having leading and trailing edge portions, means supporting the occluder disc for (a) movement longitudinally downstream relative to the base member to move the upstream face out of seating engagement with said base member, and (b) rotational movement about an axis between the leading and trailing edges of the disc and means on said base member providing a seat for the marginal portion of the upstream curvilinear face of the disc said seat providing means having a curved profile that matches the curved profile of the upstream curvilinear face of the occluder disc.
Claim 3
Dependent Claim
69 words
The invention defined in claim 1 wherein the supporting means for the occluder disc comprise a pair of spaced track-forming members secured at one end to the external wall of the base member and extending generally in a downstream direction and a pair of pivot pins secured to the periphery of the occluder disc between the leading and trailing edges thereof received between each pair of track forming members.
Claim 4
Dependent Claim
24 words
The invention defined in claim 2 wherein the pivot pins are closer to the leading edge of the disc than the trailing edge thereof.
Claim 5
Dependent Claim
22 words
The invention defined in claim 1 wherein the occluder disc comprises silicone rubber and the base member comprises a non-resilient biocompatible material.
Claim 6
Dependent Claim
15 words
The invention defined in claim 4 wherein the base member comprises a non-ferrous cobalt-chromium alloy.
Claim 7
Dependent Claim
12 words
The invention defined in claim 4 wherein the base member comprises pyrocarbon.
Claim 8
Dependent Claim
154 words
A prosthetic heart valve comprising an occluder disc having upstream and downstream curvilinear faces, the downstream face being concave, and the upstream face being convex, said concave and convex faces defining a high camber airfoil-like structure having leading and trailing edge portions, the thickness of the airfoil-like disc being greater in the region of the leading edge portion than in the region of the trailing edge portion, means supporting the occluder disc for (a) movement longitudinally downstream relative to the base member to move the upstream face out of seating engagement with said base member, and (b) rotational movement about an axis between the leading and trailing edges of the disc and means on said base member providing a seat for the marginal portion of the upstream curvilinear face of the disc said seat providing means having a curved profile that matches the curved profile of the upstream curvilinear face of the occluder disc.
Claim 9
Dependent Claim
154 words
A prosthetic heart valve comprising an occluder disc having upstream and downstream curvilinear faces, the downstream face being concave, and the upstream face being convex, said concave and convex faces defining a high camber airfoil-like structure having leading and trailing edge portions, the thickness of the airfoil-like disc being greater in the region of the leading edge portion than in the region of the trailing edge portion, means supporting the occluder disc for (a) movement longitudinally downstream relative to the base member to move the upstream face out of seating engagement with said base member, and (b) rotational movement about an axis between the leading and trailing edges of the disc and means on said base member providing a seat for the marginal portion of the upstream curvilinear face of the disc said seat providing means having a curved profile that matches the curved profile of the upstream curvilinear face of the occluder disc.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |