US5089015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for implanting unstented xenografts and allografts
Assignee: Promedica International Inc
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Filing: 1989-11-28
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Granted: 1992-02-18
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Expires: 2009-11-28
Abstract
Abstract A holder for providing physiologic support to an unstented xenograft or allograft. The holder facilitates selection and implantation of a replacement unstented xenograft or allograft in the treatment of aortic heart valve dysfunction. The novel holder comprises a device replicating key dimensions of the recipient native aortic root and incorporates a trimming guide. The holder is designed for several common sizes of the recipient native aortic root and annulus.
Inventors
- 👤 Donald N. Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:59
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2427; A61B; A61B17/00; A61B2017/00969
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
A method of surgically implanting an unstented pulmonary or aortic valve into a human patient to replace the patient's aortic valve, using a holder having an elongated handle, a base, three generally spoon shaped support members extending in a first direction from the base to outwardly convex enlarged ends of the support members such that the support members can provide physiologic support for the valve sinuses, and a receptacle on the base which can releasably engage an end of the handle such that the handle extends in a direction opposite the support members, comprising: a) excising the patient's aortic valve while leaving the aortic root in place; b) inserting the support members of the holder into the unstented valve to be implanted, such that the support members provide physiologic support for the valve sinuses; c) releasably engaging an end of the handle in the base such that the handle extends outwardly through a pulmonary or aortic artery segment of the valve; d) inserting the supported valve temporarily into the patient's aortic root to confirm correct size; e) suturing the implanted valve in place in the patient's aortic root; and f) removing the holder by pulling on the handle.
Claim 2
Independent Claim
198 words
A method of surgically implanting an unstented pulmonary or aortic valve into a human patient to replace the patient's aortic valve, using a holder having an elongated handle, a base, three generally spoon shaped support members extending in a first direction from the base to outwardly convex enlarged ends of the support members such that the support members can provide physiologic support for the valve sinuses, and a receptacle on the base which can releasably engage an end of the handle such that the handle extends in a direction opposite the support members, comprising: a) excising the patient's aortic valve while leaving the aortic root in place; b) inserting the support members of the holder into the unstented valve to be implanted, such that the support members provide physiologic support for the valve sinuses; c) releasably engaging an end of the handle in the base such that the handle extends outwardly through a pulmonary or aortic artery segment of the valve; d) inserting the supported valve temporarily into the patient's aortic root to confirm correct size; e) suturing the implanted valve in place in the patient's aortic root; and f) removing the holder by pulling on the handle.
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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) | 1995-02-17 | 1995-08-19 | 1996-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-17 | 1999-08-19 | 2000-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-17 | 2003-08-19 | 2004-02-18 | $7700.00 | Window Closed / Lapsed |