US5332142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear stapling mechanism with cutting means
Assignee: Ethicon Inc
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Filing: 1993-06-24
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Granted: 1994-07-26
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Expires: 2013-06-24
Abstract
Abstract A stapler mechanism is described which contains a stapling assembly, and anvil assembly, firing means and knife means. These means are activated by a firing trigger. The anvil assembly is closed upon the stapling assembly by means of a closure trigger. The firing trigger is inoperable until the closure trigger has been activated. Another mechanism in the stapler is capable of locking the closure trigger after use so it does not spring open inadvertently before actuation of the firing trigger. Additionally, the stapler mechanism allows forward motion of both triggers and also is capable of allowing reverse motion of the closure trigger to open the mechanism. Furthermore, the stapler mechanism contains means for obstructing the flow of insufflation gasses or bodily fluid from the surgical site through the instrument during endoscopic surgery.
Inventors
- 👤 Stephen C. Robinson
- 👤 Todd Olson
- 👤 Dan Meiser
- 👤 Gary Steed
- 👤 Eric Huffman
- 👤 Matthew Otten
- 👤 Ronald VanOverloop
- 👤 Darrel Powell
- 👤 Thomas Knodell
- 👤 Edward Rhad
- 👤 Ralph Chen
- 👤 Robert Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:37
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/068; A61B17/072; A61B17/07207; A61B17/32; A61B17/320016; A61B2017/07214; A61B2017/07271; A61B17/28; A61B17/29; A61B17/2909; A61B2017/2912; A61B2017/2919; A61B2017/2922; A61B2017/2926; A61B2017/2927; A61B2017/2929; A61B2017/2948; A61B90/00; A61B90/08; A61B2090/0814
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
161 words
A surgical stapler for endoscopic application comprising a stapling portion, a handle portion, and a shaft portion, the stapling portion connected to the handle portion by means of the shaft portion, and the stapling portion comprising a stapling assembly containing staples and an anvil assembly, such that the anvil assembly is pivotally attached to the stapling assembly, said handle portion containing a firing trigger and a closure trigger, such that said closure trigger is capable of pivoting said anvil assembly into proximity of said stapling assembly, and said firing trigger is capable of firing said staples contained in said stapling assembly toward said anvil assembly, said stapler assembly containing a knife mechanism actuable by said firing trigger, and said shaft portion containing a sealing assembly to obstruct the flow of gas through said stapler, said sealing assembly including an elastomeric sealing membrane and spacing means adjacent to said membrane for cushioning the movement of said membrane when said stapler is fired.
Claim 2
Dependent Claim
161 words
A surgical stapler for endoscopic application comprising a stapling portion, a handle portion, and a shaft portion, the stapling portion connected to the handle portion by means of the shaft portion, and the stapling portion comprising a stapling assembly containing staples and an anvil assembly, such that the anvil assembly is pivotally attached to the stapling assembly, said handle portion containing a firing trigger and a closure trigger, such that said closure trigger is capable of pivoting said anvil assembly into proximity of said stapling assembly, and said firing trigger is capable of firing said staples contained in said stapling assembly toward said anvil assembly, said stapler assembly containing a knife mechanism actuable by said firing trigger, and said shaft portion containing a sealing assembly to obstruct the flow of gas through said stapler, said sealing assembly including an elastomeric sealing membrane and spacing means adjacent to said membrane for cushioning the movement of said membrane when said stapler is fired.
Claim 3
Dependent Claim
32 words
The surgical stapler of claim 1 wherein said elastomeric sealing membrane is composed of a latex rubber, a fluorocarbon, a nitrile rubber, a polyurethane, a polyisoprene, a polyacrylate or a silicone rubber.
Claim 4
Dependent Claim
23 words
The surgical stapler of claim 2 wherein said elastomeric sealing membrane is composed of a silicone rubber, a latex rubber, or a polyurethane.
Claim 5
Dependent Claim
17 words
The surgical stapler of claim 3 wherein said elastomeric sealing membrane is composed of a silicone rubber.
Claim 6
Dependent Claim
30 words
The surgical stapler of claim 1 wherein said sealing assembly further comprises adapting means attached to said membrane for securely mounting said membrane to said shaft portion of said stapler.
Claim 7
Dependent Claim
27 words
The surgical stapler of claim 5 wherein said sealing assembly further comprises retaining means attached to said adapting means for retaining said membrane on said adapting means.
Claim 8
Dependent Claim
16 words
The surgical stapler of claim 6 wherein two spacing means are provided adjacent to said membrane.
Claim 9
Dependent Claim
15 words
The surgical stapler of claim 7 wherein said spacing means are composed of resilient foam.
Claim 10
Dependent Claim
16 words
The surgical stapler of claim 8 wherein said membrane is sandwiched between said two spacing means.
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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) | 1997-07-25 | 1998-01-24 | 1998-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-25 | 2002-01-24 | 2002-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-25 | 2006-01-24 | 2006-07-26 | $7700.00 | Window Closed / Lapsed |