Patent US3725961A successfully refreshed from Google Patents.
US3725961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prosthetic heart valve having fabric suturing element
Assignee: HV Corp
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Filing: 1970-12-29
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Granted: 1973-04-10
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Expires: 1990-12-29
Abstract
Abstract A prosthetic heart valve is disclosed having a support ring which carries means for retaining a movable closure element in positions adjacent one side of the ring. The support ring has a fabric wrapping which defines, as a suturing element, an annular protrusion of fabric of double thickness extending from the side of the ring which is opposite the side adjacent the closure element.
Inventors
- 👤 G Magovern
- 👤 H Cromie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:43
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2421; A61F2/2409
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
109 words
A prosthetic heart valve which comprises: a support ring defining an orifice, which support ring carries means retaining a moveable closure element adjacent one side of said support ring, said support ring having a fabric wrapping which defines, as a suturing element, a flexible annular protrusion. of fabric of multiple thickness extending solely from a radially inward portion of the side of the support ring in position adjacent the orifice, and positioned opposite said one side adjacent the closure element, said protrusion extending in a direction approximately perpendicular to the plane of said support ring, and an annular seam securing together the thickness of fabric defining said annular protrusion.
Claim 2
Dependent Claim
109 words
A prosthetic heart valve which comprises: a support ring defining an orifice, which support ring carries means retaining a moveable closure element adjacent one side of said support ring, said support ring having a fabric wrapping which defines, as a suturing element, a flexible annular protrusion. of fabric of multiple thickness extending solely from a radially inward portion of the side of the support ring in position adjacent the orifice, and positioned opposite said one side adjacent the closure element, said protrusion extending in a direction approximately perpendicular to the plane of said support ring, and an annular seam securing together the thickness of fabric defining said annular protrusion.
Claim 3
Dependent Claim
18 words
The heart valve of claim 1 iN which said fabric wrapping is a folded and sewn tubular sleeve.
Claim 4
Dependent Claim
16 words
The heart valve of claim 2 in which the annular fabric protrusion is of double thickness.
Claim 5
Dependent Claim
16 words
The heart valve of claim 3 in which said fabric is velour which comprises polyester fiber.
Claim 6
Dependent Claim
28 words
The heart valve of claim 4 in which said movable closure element is a disc which is movable between an open, flow-permitting position and a closed, flow-occluding position.
Claim 7
Dependent Claim
151 words
A prosthetic heart valve which comprises a support ring defining an orifice, which support ring carries means retaining a moveable closure element adjacent one side of said support ring, said support ring having a fabric wrapping which defines, as a suturing element, a flexible annular protrusion of fabric of multiple thickness extending solely from a radially inward portion of the side of the support ring in a position adjacent the orifice, and positioned opposite said one side adjacent the closure element, said protrusion extending in a direction approximately perpendicular to the plane of said support ring and having inner and outer ends, an annular seam securing the thickness of fabric defining said annular protrusion of fabric together adjacent said inner end, and sutures in the outer end of said protrusion for securance to a mitral orifice of a heart, the outer periphery of said support ring being free of tissue-securing sutures.
Claim 8
Dependent Claim
151 words
A prosthetic heart valve which comprises a support ring defining an orifice, which support ring carries means retaining a moveable closure element adjacent one side of said support ring, said support ring having a fabric wrapping which defines, as a suturing element, a flexible annular protrusion of fabric of multiple thickness extending solely from a radially inward portion of the side of the support ring in a position adjacent the orifice, and positioned opposite said one side adjacent the closure element, said protrusion extending in a direction approximately perpendicular to the plane of said support ring and having inner and outer ends, an annular seam securing the thickness of fabric defining said annular protrusion of fabric together adjacent said inner end, and sutures in the outer end of said protrusion for securance to a mitral orifice of a heart, the outer periphery of said support ring being free of tissue-securing sutures.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |