Patent US5163953A successfully refreshed from Google Patents.
US5163953A
Expired / Lapsed
US
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Toroidal artificial heart valve stent
Assignee: Individual
•
Filing: 1992-02-10
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Granted: 1992-11-17
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Expires: 2012-02-10
Abstract
Abstract A stent for a heart valve. The valve has a flap valve of biological material. The stent has a generally toroidal body formed of a flexible coil of wire. A plurality of posts extend upwardly from the body to mount the flap valves. The stent in combination with a percutaneous balloon dilatable catheter is also described. The catheter is positioned intraluminal of the valve and dilation of the balloon exerts stress to overcome the elastic limit of the stent to increase stent circumference.
Inventors
- 👤 Dennis J. Vince
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:32
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2418; Y; Y10; Y10S; Y10S623/00; Y10S623/90
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
48 words
A stent for a heart valve, the valve having flap valves of biological material, the stent comprising: a generally toroidal body formed of a flexible coil of wire; and a plurality of posts extending substantially parallel to the axis of the toroidal body to mount the flap valves.
Claim 2
Dependent Claim
48 words
A stent for a heart valve, the valve having flap valves of biological material, the stent comprising: a generally toroidal body formed of a flexible coil of wire; and a plurality of posts extending substantially parallel to the axis of the toroidal body to mount the flap valves.
Claim 3
Dependent Claim
25 words
A stent as claimed in claim 1 having a unitary structure with the plurality of posts formed by the wire of the generally toroidal body.
Claim 4
Dependent Claim
20 words
A stent as claimed in claim 2 in which there are three posts dividing the toroidal body into three segments.
Claim 5
Dependent Claim
13 words
A stent as claimed in claim 1 covered in a flexible silicone sheath.
Claim 6
Dependent Claim
37 words
A stent as claimed in clim 1 in combination with a percutaneous balloon dilatable catheter, intraluminal of the valve, dilation of the balloon exerting stress to overcome the elastic limit of the stent to increase stent circumference.
References Cited (Backward Citations)
US4038703A
Cited
US4106129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-17 | 1996-05-18 | 1996-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-17 | 2000-05-18 | 2000-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-17 | 2004-05-18 | 2004-11-17 | $7700.00 | Window Closed / Lapsed |