US4917698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-segmented annuloplasty ring prosthesis
Assignee: Edwards Lifesciences Corp
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Filing: 1988-12-22
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Granted: 1990-04-17
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Expires: 2008-12-22
Abstract
Abstract A ring prosthesis which provides different flexibilities at various points about the circumference of an associated heart valve. Specifically, the annuloplasty ring prosthesis of the invention includes a segmented body formed by two or more segments. The individual segments form a body which is substantially circular and shaped proportional to fit about the annulus of the associated heart valve. The individual segments are held in position with respect to each by a flexible joint. This flexible joint is formed by covering the segments with a flexible material which fits snugly about the segments. The cover is tied off between the adjacent segments to further restrain movement of the segments with respect to each other.
Inventors
- 👤 Alain Carpentier
- 👤 Hung L. Lam
- 👤 Than Nguyen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:18
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2442; A61F2/2445; A61F2/2448
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
85 words
An annuloplasty ring prosthesis comprising: a body which defines a substantially circular shaped ring proportioned to fit about the annulus of a heart valve, said body being formed from two or more segments, each of which is formed with opposing ends; a flexible covering fitted about said segments to position each of said segments ends adjacent to an end of another of said segments, with said ends remaining unconnected; and means associated with said covering for snugly holding said covering about said adjacently positioned ends.
Claim 2
Dependent Claim
85 words
An annuloplasty ring prosthesis comprising: a body which defines a substantially circular shaped ring proportioned to fit about the annulus of a heart valve, said body being formed from two or more segments, each of which is formed with opposing ends; a flexible covering fitted about said segments to position each of said segments ends adjacent to an end of another of said segments, with said ends remaining unconnected; and means associated with said covering for snugly holding said covering about said adjacently positioned ends.
Claim 3
Dependent Claim
14 words
The annuloplasty ring prosthesis of claim 1 wherein said individual segments are substantially rigid.
Claim 4
Dependent Claim
20 words
The annuloplasty ring prosthesis of claim 1 wherein said body is formed from three substantially equivalently sized and shaped segments.
Claim 5
Dependent Claim
25 words
The annuloplasty ring prosthesis of claim 1 wherein at least one of said segments is formed from a plurality of individual smaller elements linked together.
Claim 6
Dependent Claim
41 words
The annuloplasty ring prosthesis of claim 1 including two of said segments wherein one of said segments is substantially straight with slightly curved ends, and said second of said segments is formed from a plurality of individual smaller linked together elements.
Claim 7
Dependent Claim
17 words
The annuloplasty ring prosthesis of claim 5 wherein said smaller elements are tied together with a cord.
Claim 8
Dependent Claim
26 words
The annuloplasty ring prosthesis of claim 6 wherein each of said elements are formed with at least a first aperture through which said cord is drawn.
Claim 9
Dependent Claim
30 words
The annuloplasty ring prosthesis of claim 1 wherein said holding of said covering about said adjacently positioned segment ends is obtained by tightening said covering between said adjacent segment ends.
Claim 10
Dependent Claim
14 words
The annuloplasty ring prosthesis of claim 8 wherein said ring prosthesis includes two segments.
Claim 11
Dependent Claim
14 words
The annuloplasty ring prosthesis of claim 8 wherein said ring prosthesis includes three segments.
Claim 12
Dependent Claim
25 words
The annuloplasty ring prosthesis of claim 10 wherein a first of said segments is substantially straight, with said two other of said segments being curved.
Claim 13
Dependent Claim
41 words
The annuloplasty ring prosthesis of claim 8 wherein said ring prosthesis includes a first substantially straight segment having curved ends and a second segment formed from a plurality of linked together elements positioned between said curved ends of said first segment.
Claim 14
Dependent Claim
25 words
The annuloplasty ring prosthesis of claim 12 wherein said first segment is formed from titanium and said second segment is formed from a plastic material.
Claim 15
Dependent Claim
25 words
The annuloplasty ring prosthesis of claim 2 wherein said holding of said segment ends is obtained by tightening said covering between said adjacent segment ends.
Claim 16
Dependent Claim
25 words
The annuloplasty ring prosthesis of claim 4 wherein said holding of said segment ends is obtained by tightening said covering between said adjacent segment ends.
Claim 17
Dependent Claim
25 words
The annuloplasty ring prosthesis of claim 5 wherein said holding of said segment ends is obtained by tightening said covering between said adjacent segment ends.
Claim 18
Dependent Claim
53 words
The annuloplasty ring prosthesis of claim 16 wherein said individual elements forming said segment are oblong bodies arranged in an end to end relationship, with alternating ones of said bodies being formed with circular ends and said remaining ones of said bodies being formed with concave ends for receiving said circular element ends.
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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) | 1993-04-16 | 1993-10-16 | 1994-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-16 | 1997-10-16 | 1998-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-16 | 2001-10-16 | 2002-04-17 | $7700.00 | Window Closed / Lapsed |