Patent US6558417B2 successfully refreshed from Google Patents.
US6558417B2
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Single suture biological tissue aortic stentless valve
Assignee: St Jude Medical LLC
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Filing: 2001-07-02
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Granted: 2003-05-06
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Expires: 2021-07-02
Abstract
Abstract A semilunar stentless valve is formed entirely of biological tissue, and has a plurality of leaflets that are joined to form an annulus and coapt to form a one-way valve. The leaflets open fully to minimize obstruction. A narrow rim of tissue is provided over commissures where the leaflets join and around a base of the valve for a sewing ring. The valves can be sutured to heart tissue wall in a single suture row.
Inventors
- 👤 Mario Osvaldo Vrandecic Peredo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:29
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2415; A61F2220/00; A61F2220/0025; A61F2220/0075
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
111 words
A method of repairing a human heart valve comprising the steps of: forming a stentless valve prosthesis made entirely of tissue and having a plurality of leaflets; joining side edges of the leaflets along commissures extending in a flow direction; forming the leaflets to encircle a flow opening to form a valve; providing a tissue sewing rim formed at least in part by portions of the leaflets around an inlet of the valve, and including a tissue layer over the commissures formed where the leaflets join; and suturing the valve to heart tissue of a patient with a single suture row along the sewing rim and tissue layer over the commissures.
Claim 2
Independent Claim
111 words
A method of repairing a human heart valve comprising the steps of: forming a stentless valve prosthesis made entirely of tissue and having a plurality of leaflets; joining side edges of the leaflets along commissures extending in a flow direction; forming the leaflets to encircle a flow opening to form a valve; providing a tissue sewing rim formed at least in part by portions of the leaflets around an inlet of the valve, and including a tissue layer over the commissures formed where the leaflets join; and suturing the valve to heart tissue of a patient with a single suture row along the sewing rim and tissue layer over the commissures.
Claim 3
Dependent Claim
56 words
The method of claim 1 , wherein the stentless valve has a low profile in a flow direction and the tissue layers at the commissures have a narrow width forming posts, and suturing the valve positioned with the commissures and sewing rim spaced from heart coronary ostia to leave the coronary ostia substantially free of impingement.
Claim 4
Dependent Claim
24 words
The method of claim 2 including forming the valve to have a larger outflow opening than an opening at the inlet of the valve.
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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) | 2006-05-05 | 2006-11-04 | 2007-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-05-05 | 2010-11-04 | 2011-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-05-05 | 2014-11-04 | 2015-05-06 | $7700.00 | Window Closed / Lapsed |