US4759765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tissue augmentation device
Assignee: 3M Co
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Filing: 1986-03-17
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Granted: 1988-07-26
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Expires: 2006-03-17
Abstract
Abstract A tissue augmentation device is disclosed for use in parallel with biological tissue in the repair or reconstruction of ligaments and tendons. The device comprises at least one strap-like element formed of a stable biocompatible material and a biodegradable element connected in series with the strap-like element. The device is adapted for fixation at each end thereof to the anatomical structures connected by the ligament or tendon.
Inventors
- 👤 Craig L. Van Kampen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:44
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/08; A61F2/0811; A61F2002/0817; A61F2002/0823; A61F2002/0829; A61F2002/0835; A61F2002/0847; A61F2002/0858; A61F2002/087; A61F2002/0876; A61F2002/0882; A61F2002/0888; A61F2210/00; A61F2210/0004
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
144 words
A tissue augmentation device designed to be used in parallel with biological tissue in the repair or reconstruction of a ligament or tendon comprising: (1) at least two strap-like elements formed of a stable biocompatible material having sufficient mechanical properties to support at least the working loads normally supported by said ligament or tendon; and (2) a biodegradable element connecting a terminal portion of one of said strap-like elements to the terminal portion of another of said strap-like elements; said device being adapted for fixation at both ends thereof to the anatomical structures connected by said ligament or tendon and having sufficient mechanical properties to support at least the working loads normally supported by said ligament or tendon at the time of implantation, and wherein said biodegradable element gradually loses its load-bearing capabililty after implantation thereby gradually transferring increased loads to said biological tissue.
Claim 2
Dependent Claim
144 words
A tissue augmentation device designed to be used in parallel with biological tissue in the repair or reconstruction of a ligament or tendon comprising: (1) at least two strap-like elements formed of a stable biocompatible material having sufficient mechanical properties to support at least the working loads normally supported by said ligament or tendon; and (2) a biodegradable element connecting a terminal portion of one of said strap-like elements to the terminal portion of another of said strap-like elements; said device being adapted for fixation at both ends thereof to the anatomical structures connected by said ligament or tendon and having sufficient mechanical properties to support at least the working loads normally supported by said ligament or tendon at the time of implantation, and wherein said biodegradable element gradually loses its load-bearing capabililty after implantation thereby gradually transferring increased loads to said biological tissue.
Claim 3
Dependent Claim
14 words
The device according to claim 1 wherein said biodegradable element is a bioabsorbable suture.
Claim 4
Dependent Claim
18 words
The device according to claim 2 wherein said suture stitches together overlapped terminal portions of said strap-like elements.
Claim 5
Dependent Claim
43 words
The device according to claim 1 wherein said biodegradable element is a biodegradable bobbin, comprising two radial flanges spaced apart and connected by a shaft, at least one of said flanges being capable of placement through openings in both of said strap-like elements.
Claim 6
Dependent Claim
15 words
The device according to claim 1 wherein said strap-like member comprises a synthetic polymeric yarn.
Claim 7
Dependent Claim
11 words
The device according to claim 5 wherein said yarn is braided.
Claim 8
Dependent Claim
15 words
The device according to claim 6 wherein said yarn is formed into an openwork structure.
Claim 9
Dependent Claim
22 words
The device according to claim 5 wherein said polymeric yarn is selected from the group consisting of polyolefin, polyester, polytetrafluoroethylene and polyaramid.
Claim 10
Dependent Claim
13 words
The device according to claim 8 wherein said polymeric yarn is a polyolefin.
Claim 11
Dependent Claim
12 words
The device according to claim 9 wherein said polyolefin yarn is polypropylene.
Claim 12
Dependent Claim
18 words
The device according to claim 9 wherein said polyolefin yarn is polybutylene or ultra high molecular weight polyethylene.
Claim 13
Dependent Claim
12 words
The device according to claim 1 wherein said biodegradable element is bioabsorbable.
Claim 14
Dependent Claim
31 words
The device according to claim 1 wherein said biodegradable element is formed of a polymeric material selected from the group consisting of polyesteramide, polydioxanone, polylactic acid, polyglycolic acid and copolymers thereof.
Claim 15
Dependent Claim
23 words
The device according to claim 1 capable of bearing a tensile load of at least about 500 Newtons at the time of implantation.
Claim 16
Dependent Claim
29 words
The device according to claim 1 capable of bearing a tensile load of at least about 100 Newtons for one month and no longer than two years after implantation.
Claim 17
Dependent Claim
24 words
A method of repairing or reconstructing a ligament or tendon using a biological tissue in parallel with the tissue augmentation device of claim 1.
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) | 1991-07-26 | 1992-01-25 | 1992-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-26 | 1996-01-25 | 1996-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-26 | 2000-01-25 | 2000-07-26 | $7700.00 | Window Closed / Lapsed |