Patent US5891195A successfully refreshed from Google Patents.
US5891195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined prosthetic aortic heart valve and vascular graft with sealed sewing ring
Assignee: Corcym SRL
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Filing: 1996-05-24
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Granted: 1999-04-06
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Expires: 2016-05-24
Abstract
Abstract A combined heart valve and vascular graft, or "valve/graft combination", wherein the heart valve has a sewing ring that is substantially impervious to blood flow. In our preferred embodiment, the sewing ring comprises a solid circular silicone insert which supports the sewing ring radially outwardly form the valve and forms a shield to prevent the flow of blood through the sewing ring.
Inventors
- 👤 Tammi E. Klostermeyer
- 👤 Joseph A. Sauter
- 👤 Louis A. Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:37
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/24; A61F2/2403; A61F2/2409
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
70 words
An implantable prosthetic device comprising a prosthetic heart valve having an orifice, at least one leaflet mounted within said orifice, movable between open and closed positions, and a sewing ring surrounding said orifice, said sewing ring having means for substantially preventing blood from passing through said sewing ring, and a vascular graft having a proximal end and a distal end, the proximal end being connected to said prosthetic heart valve.
Claim 2
Dependent Claim
70 words
An implantable prosthetic device comprising a prosthetic heart valve having an orifice, at least one leaflet mounted within said orifice, movable between open and closed positions, and a sewing ring surrounding said orifice, said sewing ring having means for substantially preventing blood from passing through said sewing ring, and a vascular graft having a proximal end and a distal end, the proximal end being connected to said prosthetic heart valve.
Claim 3
Dependent Claim
21 words
The implantable prosthetic device according to claim 1 wherein the sewing ring further comprises an insert circumferentially disposed around said orifice.
Claim 4
Dependent Claim
17 words
The implantable prosthetic device according to claim 2 wherein said insert is comprised of an impervious material.
Claim 5
Dependent Claim
15 words
The implantable prosthetic device according to claim 3 wherein said insert is comprised of silicone.
Claim 6
Dependent Claim
33 words
The implantable prosthetic device according to claim 1 wherein said sewing ring further comprises a stiffening ring and a fabric collar, said fabric collar being captured between said stiffening ring and said orifice.
Claim 7
Dependent Claim
22 words
The implantable prosthetic device according to claim 5 wherein the sewing ring further comprises a insert circumferentially disposed around said stiffening ring.
Claim 8
Dependent Claim
17 words
The implantable prosthetic device according to claim 6 wherein said insert is comprised of an impervious sheet.
Claim 9
Dependent Claim
15 words
The implantable prosthetic device according to claim 7 wherein said insert is comprised of silicone.
References Cited (Backward Citations)
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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) | 2002-04-05 | 2002-10-05 | 2003-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-04-05 | 2006-10-05 | 2007-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-04-05 | 2010-10-05 | 2011-04-06 | $7700.00 | Window Closed / Lapsed |