US4618086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skin stapler
Assignee: Covidien AG
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Filing: 1984-03-12
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Granted: 1986-10-21
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Expires: 2004-03-12
Abstract
Abstract The prior art discloses a surgical stapler having an anvil surface terminating in a flange, a staple feed track movably containing a plurality of staples and a staple forming track movably containing a forming blade. The improved stapler of this invention discloses the nondistal portion of the feed track being substantially parallel to the forming track. Further, the distal portion of the feed track is in substantial alignment with the distal portion of the forming track. Also the distal ends of the tracks are open in the same direction. Finally, the distal end of the feed track is between the anvil flange and the distal end of the forming track.
Inventors
- 👤 Lehmann K. Li
- 👤 Michael Marra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:49
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/068; A61B17/0682; A61B17/0684
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
144 words
In a surgical stapler having an anvil surface terminating in a flange, a staple feed track movably containing a plurality of staples and a staple forming track movably containing a forming blade, the improvement comprising the nondistal portion of said feed track being substantially parallel to said forming track and the distal portion of said feed track being in substantial alignment with the distal portion of said forming track (A) in a point to crown configuration (B) and the portion of said feed track between said distal and said nondistal portions being shaped such that said plurality of staples in said feed track move continuously and uninterrupted to said anvil flange, the distal ends of said tracks being open in the same direction and the distal end of said feed track being between the anvil flange and the distal end of said forming track.
Claim 2
Dependent Claim
144 words
In a surgical stapler having an anvil surface terminating in a flange, a staple feed track movably containing a plurality of staples and a staple forming track movably containing a forming blade, the improvement comprising the nondistal portion of said feed track being substantially parallel to said forming track and the distal portion of said feed track being in substantial alignment with the distal portion of said forming track (A) in a point to crown configuration (B) and the portion of said feed track between said distal and said nondistal portions being shaped such that said plurality of staples in said feed track move continuously and uninterrupted to said anvil flange, the distal ends of said tracks being open in the same direction and the distal end of said feed track being between the anvil flange and the distal end of said forming track.
Claim 3
Dependent Claim
34 words
A surgical stapler as in claim 1 wherein the distal portion of said feed track is curved toward said forming track such that said staple moves on said feed track to said anvil flange.
Claim 4
Dependent Claim
13 words
A surgical stapler as in claim 1 wherein said anvil flange is movable.
Claim 5
Dependent Claim
13 words
A surgical stapler as in claim 2 wherein said anvil flange is movable.
Claim 6
Dependent Claim
33 words
A surgical stapler as in claim 3 including means to move said anvil flange said means moving said anvil flange into substantial alignment with said tracks before said staple moves to said flange.
Claim 7
Dependent Claim
33 words
A surgical stapler as in claim 4 including means to move said anvil flange said means moving said anvil flange into substantial alignment with said tracks before said staple moves to said flange.
Claim 8
Dependent Claim
17 words
A surgical stapler as in claim 2 wherein said anvil surface is substantially parallel to said tracks.
Claim 9
Dependent Claim
17 words
A surgical stapler as in claim 6 wherein said anvil surface is substantially parallel to said tracks.
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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) | 1989-10-20 | 1990-04-21 | 1990-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-20 | 1994-04-21 | 1994-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-20 | 1998-04-21 | 1998-10-21 | $7700.00 | Window Closed / Lapsed |