US6283995B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heart valve leaflet with scalloped free margin
Assignee: Sorin Group Italia SRL
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Filing: 1999-04-15
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Granted: 2001-09-04
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Expires: 2019-04-15
Abstract
Abstract A heart valve prosthesis includes a molded body and a plurality of leaflets. Each leaflet includes a free margin having opposite ends and a mid-point. The opposite ends are attached to a peripheral portion of the valve. Each free margin is adjacent each other free margin to form a natural-state non-uniform gap therebetween. The gap has a maximized width adjacent the mid-point of each leaflet. Each free margin is scalloped to form a peak at the opposite ends and a mid-point peak between the opposite ends. Each peak is substantially the same height above the base.
Inventors
- 👤 Riyad E. Moe
- 👤 Edward J. Sarnowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:59
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
117 words
A heart valve prosthesis comprising: a peripheral valve body; at least three polymeric leaflets, each leaflet comprising a free margin having opposite ends attached to said peripheral valve body and a mid-point, each said free margin being adjacent another free margin to form a plurality of adjacent free margin pairs, and each free margin being scalloped to form a peak at each of said opposite ends and a mid-point peak between said opposite ends; and a plurality of natural state non-uniform gaps formed between each of said adjacent free margin pairs, said gaps having a first width adjacent said opposite ends and a second width adjacent said mid-point, said second width being greater than said first width.
Claim 2
Dependent Claim
117 words
A heart valve prosthesis comprising: a peripheral valve body; at least three polymeric leaflets, each leaflet comprising a free margin having opposite ends attached to said peripheral valve body and a mid-point, each said free margin being adjacent another free margin to form a plurality of adjacent free margin pairs, and each free margin being scalloped to form a peak at each of said opposite ends and a mid-point peak between said opposite ends; and a plurality of natural state non-uniform gaps formed between each of said adjacent free margin pairs, said gaps having a first width adjacent said opposite ends and a second width adjacent said mid-point, said second width being greater than said first width.
Claim 3
Dependent Claim
15 words
The heart valve of claim 1 wherein the peripheral valve body comprises an annular surface.
Claim 4
Dependent Claim
17 words
The heart valve of claim 2 wherein the annular surface comprises a plurality of commissures formed therewith.
Claim 5
Dependent Claim
20 words
The heart valve as defined in claim 3 wherein the opposite ends terminate adjacent a respective one of the commissures.
Claim 6
Dependent Claim
18 words
The heart valve of claim 1 wherein the body includes a base having a sewing ring formed therewith.
Claim 7
Dependent Claim
23 words
The heart valve of claim 1 wherein the body includes a base, each peak extending to a substantially equal height above the base.
Claim 8
Dependent Claim
11 words
The heart valve of claim 1 wherein the leaflets are molded.
Claim 9
Dependent Claim
19 words
The heart valve of claim 1 further comprising a central opening the mid-point peak being adjacent the central opening.
Claim 10
Dependent Claim
34 words
The heart valve of claim 1 wherein each mid-point peak is of a height sufficient to contact each other mid-point peak in response to each free margin being urged toward each other free margin.
Claim 11
Dependent Claim
95 words
A heart valve prosthesis comprising: a valve body comprising a base and a plurality of polymeric leaflets, each leaflet comprising a free margin having opposite ends attached to said valve body and a mid-point; each free margin being adjacent another free margin to form a natural-state nonuniform gap therebetween, the gap having a maximized width adjacent the mid-point of each leaflet; and each free margin being scalloped to form a peak at each of the opposite ends and a mid-point peak between the opposite ends, each peak being of substantially equal height above the base.
Claim 12
Dependent Claim
95 words
A heart valve prosthesis comprising: a valve body comprising a base and a plurality of polymeric leaflets, each leaflet comprising a free margin having opposite ends attached to said valve body and a mid-point; each free margin being adjacent another free margin to form a natural-state nonuniform gap therebetween, the gap having a maximized width adjacent the mid-point of each leaflet; and each free margin being scalloped to form a peak at each of the opposite ends and a mid-point peak between the opposite ends, each peak being of substantially equal height above the base.
Claim 13
Dependent Claim
19 words
The heart valve of claim 10 wherein the valve body further comprises a peripheral portion comprising an annular surface.
Claim 14
Dependent Claim
20 words
The heart valve as defined in claim 11 wherein the annular peripheral surface includes a plurality of commissures formed therewith.
Claim 15
Dependent Claim
20 words
The heart valve as defined in claim 12 wherein the opposite ends terminate adjacent a respective one of the commissures.
Claim 16
Dependent Claim
18 words
The heart valve of claim 10 wherein the body includes a base having a sewing ring formed therewith.
Claim 17
Dependent Claim
10 words
The heart valve of claim 10 wherein the body molded.
Claim 18
Dependent Claim
19 words
The heart valve of claim 10 further comprising a central opening, the mid-point peak being adjacent the central opening.
Claim 19
Dependent Claim
43 words
The prosthetic heart valve as defined in claim 10 wherein each mid-point peak is of a height sufficient to converge with each other mid-point peak to a substantially closed position in response to each free margin being urged toward each other free margin.
Claim 20
Dependent Claim
105 words
A flexible leaflet heart valve comprising: a body and at least three leaflets, each leaflet including a free margin having opposite ends and a mid-point, the opposite ends being attached to a peripheral portion of the valve; each free margin being adjacent each other free margin to from a natural-state non-uniform gap therebetween, the gap including at least three legs having a substantially uniform first width and a central opening having a second width greater than the first width interconnecting the three legs; and each free margin being scalloped to form a peak at the opposite ends and a mid-point peak adjacent the central opening.
Claim 21
Dependent Claim
105 words
A flexible leaflet heart valve comprising: a body and at least three leaflets, each leaflet including a free margin having opposite ends and a mid-point, the opposite ends being attached to a peripheral portion of the valve; each free margin being adjacent each other free margin to from a natural-state non-uniform gap therebetween, the gap including at least three legs having a substantially uniform first width and a central opening having a second width greater than the first width interconnecting the three legs; and each free margin being scalloped to form a peak at the opposite ends and a mid-point peak adjacent the central opening.
Claim 22
Dependent Claim
24 words
The heart valve of claim 18 wherein the peripheral portion of the valve comprises an annular surface comprising a plurality of commissures formed therewith.
Claim 23
Dependent Claim
20 words
The heart valve as defined in claim 19 wherein the opposite ends terminate adjacent a respective one of the commissures.
Claim 24
Dependent Claim
21 words
The heart valve of claim 18 wherein the body is molded and comprises a base having a sewing ring formed therewith.
Claim 25
Dependent Claim
23 words
The heart valve of claim 18 wherein the body comprises a base, each peak extending to a substantially equal height above the base.
Claim 26
Dependent Claim
15 words
The heart valve as defined in claim 18 wherein each leaflet free margin is molded.
Claim 27
Dependent Claim
21 words
The heart valve as defined in claim 18 wherein each leaflet free margin is molded separate from each other leaflet margin.
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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) | 2004-09-03 | 2005-03-05 | 2005-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-09-03 | 2009-03-05 | 2009-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-09-03 | 2013-03-05 | 2013-09-04 | $7700.00 | Window Closed / Lapsed |