US4591086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical stapling instrument
Assignee: Covidien AG
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Filing: 1983-01-19
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Granted: 1986-05-27
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Expires: 2003-01-19
Abstract
Abstract A surgical stapling instrument is disclosed. The instrument has a handle, a trigger, means for carrying a staple, the carrying means comprising a track for containing at least one staple, and means for closing the staple. The improvement to the track comprises a leaf spring. The track and the leaf spring are a unitary element. The leaf spring is at the end of the track adjacent to the closing means. In one embodiment, the closing means is an anvil surface terminating in a flange.
Inventors
- 👤 Jay E. Campbell
- 👤 Richard H. Reichmann
- 👤 Lehmann K. Li
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:32
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/068; A61B17/0682; A61B17/0684
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
124 words
A surgical stapling instrument comprising: a handle; a movable trigger mounted on said handle; means connected to said handle for forming and driving a staple, said means comprising a movable forming and driving blade and a staple forming anvil; means for carrying a plurality of staples and presenting them to said forming blade to be driven and formed, said carrying means comprising a one piece track; a plurality of staples carried on said track with the proximal staple of said plurality being adjacent said anvil; the improvement comprising a leaf spring which is a unitary part of said track and positioned at the end of said track adjacent said anvil whereby said proximal staple is biased away from said anvil by said leaf spring.
Claim 2
Dependent Claim
124 words
A surgical stapling instrument comprising: a handle; a movable trigger mounted on said handle; means connected to said handle for forming and driving a staple, said means comprising a movable forming and driving blade and a staple forming anvil; means for carrying a plurality of staples and presenting them to said forming blade to be driven and formed, said carrying means comprising a one piece track; a plurality of staples carried on said track with the proximal staple of said plurality being adjacent said anvil; the improvement comprising a leaf spring which is a unitary part of said track and positioned at the end of said track adjacent said anvil whereby said proximal staple is biased away from said anvil by said leaf spring.
Claim 3
Dependent Claim
22 words
An instrument of claim 1 wherein said carrying means comprises means for advancing a staple to a position adjacent said leaf spring.
Claim 4
Dependent Claim
16 words
An instrument of claim 1 wherein a portion of said leaf spring extends beyond said track.
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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) | 1989-05-26 | 1989-11-25 | 1990-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-26 | 1993-11-25 | 1994-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-26 | 1997-11-25 | 1998-05-27 | $7700.00 | Window Closed / Lapsed |