Patent US2787376A successfully refreshed from Google Patents.
Patent US4924865A successfully refreshed from Google Patents.
US4924865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Repair tack for bodily tissue
Assignee: Linvatec Corp
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Filing: 1988-05-16
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Granted: 1990-05-15
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Expires: 2008-05-16
Abstract
Abstract An apparatus for repairing in vivo torn cartilaginous or other bodily tissue, particularly torn meniscus tissue during arthroscopic surgery, employs a repair tack of biodegradable material chosen to have a degradation time in excess of the required healing time for the tissue. The repair tack has a shaft portion with a longitudinal bore and a grip portion adapted for releasable engagement by a hollow applicator. In one embodiment the grip portion of the tack is a cross bar, at the proximal end of the shaft, which fits into an open-sided slot at the forward end of the applicator.
Inventors
- 👤 F. Barry Bays
- 👤 Arthur F. Trott
- 👤 Sam R. Marchand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:04
CPC Classifications
F; F16; F16B; F16B15/00; F16B15/06; A; A61; A61B; A61B17/00; A61B17/04; A61B17/0469; A61B17/064; B; B25; B25B; B25B13/00; B25B13/48; B25B13/50; B25B13/5091; A61B2017/00004; A61B2017/0646; A61B2017/0647
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
178 words
A tack for holding together severed or torn segments of the meniscus to permit healing in vivo comprising a shaft having a proximal flange-like end, a distal end and a substantially cylindrical bore extending longitudinally from said proximal end to said distal end to allow a needle to pass freely entirely through said shaft to extend from said distal end for penetration in the meniscus segments; and a plurality of tapered barbs disposed longitudinally in axial sequence along at least one-half of the length of said shaft, said barbs having substantially equal points of maximum width to be imbedded in the meniscus segments and including a distal barb tapering to terminate at a sharp circular edge at said distal end of said shaft, said sharp circular edge having a diameter substantially the same as said bore to facilitate penetration and imbedding of said barbs in the meniscus segments, the entirety of said tack being made of a biodegradable material having a degradation time selected to be at least as long as the required healing time for the meniscus.
Claim 2
Dependent Claim
178 words
A tack for holding together severed or torn segments of the meniscus to permit healing in vivo comprising a shaft having a proximal flange-like end, a distal end and a substantially cylindrical bore extending longitudinally from said proximal end to said distal end to allow a needle to pass freely entirely through said shaft to extend from said distal end for penetration in the meniscus segments; and a plurality of tapered barbs disposed longitudinally in axial sequence along at least one-half of the length of said shaft, said barbs having substantially equal points of maximum width to be imbedded in the meniscus segments and including a distal barb tapering to terminate at a sharp circular edge at said distal end of said shaft, said sharp circular edge having a diameter substantially the same as said bore to facilitate penetration and imbedding of said barbs in the meniscus segments, the entirety of said tack being made of a biodegradable material having a degradation time selected to be at least as long as the required healing time for the meniscus.
Claim 3
Dependent Claim
27 words
The tack according to claim 1 wherein said barbs have rear surfaces facing said proximal end and disposed substantially perpendicular to the longitudinal dimension of said shaft.
Claim 4
Dependent Claim
14 words
The tack according to claim 1 wherein said barbs each have a frusto-conical configuration.
Claim 5
Dependent Claim
15 words
The tack according to claim 1 wherein said barbs each have a truncated pyramidal configuration.
Claim 6
Dependent Claim
18 words
The tack according to claim 4 wherein each of said barbs has a generally triangular transverse cross section.
Claim 7
Dependent Claim
18 words
The tack according to claim 4 wherein each of said barbs has a generally rectangular transverse cross section.
Claim 8
Dependent Claim
17 words
The tack according to claim 1 wherein the tack in its entirety is an integrally-molded plastic unit.
Claim 9
Dependent Claim
29 words
The tack according to claim 1 wherein said barbs are formed of a continuous helical barb extending about said shaft over a portion of the length of said shaft.
Claim 10
Dependent Claim
23 words
A tack according to claim 1 wherein said distal barb has an axial length greater than the axial length of the other barbs.
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) | 1993-05-14 | 1993-11-13 | 1994-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-14 | 1997-11-13 | 1998-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-14 | 2001-11-13 | 2002-05-15 | $7700.00 | Window Closed / Lapsed |