US5908149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skin stapler with multi-directional release mechanism
Assignee: Ethicon Endo Surgery Inc
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Filing: 1997-03-12
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Granted: 1999-06-01
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Expires: 2017-03-12
Abstract
Abstract An improved surgical stapler which allows for the multi-directional release of staples includes a stapler body and a driver contained therein. A magazine is connected to the stapler body and includes a staple track for carrying a plurality of staples wherein each of the staples has staple legs. An anvil is associated with the staple track for providing a staple forming surface for forming a staple thereon. A feeder element which is spring biased against the staples is used for feeding each staple from the staple track to the anvil. A trigger is operatively connected to the driver and is movable from a pre-fire position to a firing position for advancing the driver against the anvil for forming the staple against the anvil. A kick-off spring is positioned beneath and substantially parallel to the staple track and the anvil. The kick-off spring has a deflectable tip which is deflected away from the anvil and engages the staple legs of the staple by downwardly camming against the staple legs when the trigger is moved from its pre-fire position to its firing position. The kick-off spring ejects the staples off of and away from the anvil by disengaging the staple legs with the deflectable tip by upwardly camming against the staple legs upon returning of the trigger from the firing position to the pre-fire position.
Inventors
- 👤 Robert F. Welch
- 👤 Steven W. Hamblin
- 👤 Robert L. Koch, Jr.
- 👤 John I. Izuchukwu
- 👤 Jeff Kirk
- 👤 John Kretchman
- 👤 Richard Schweet
- 👤 David Wolf
- 👤 Charles Hansford
- 👤 Navneet Tony Sharma
- 👤 John Mertz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:02
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/068; A61B17/0682; A61B17/0684
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
254 words
A surgical stapler for applying a staple in tissue comprising: a stapler body having a driver; a magazine connected to said stapler body, said magazine including a staple track for carrying a plurality of staples wherein each of said staples has staple legs, an anvil associated with said staple track and having a staple forming surface for forming each of said staples thereon, a feeder element spring biased against said plurality of staples for feeding each of said staples from said staple track to said anvil, a kick-off spring positioned beneath and substantially parallel to said staple track and said anvil; a trigger operatively connected to said driver for advancing said driver against said anvil so as to form said staple against said staple forming surface of said anvil, said trigger being movable from a pre-fire position to a firing position; and wherein said kick-off spring has a deflectable tip which is deflected away from said anvil by said staple legs of said staple by downwardly camming of said staple legs against said tip when said trigger is moved from said pre-fire position to said firing position, said distal ends of said staple legs being anchored in said tissue at a rotation point, said kick-off spring ejecting said staple off and away from said anvil by disengaging said staple legs with said deflectable tip by upwardly camming against said staple legs upon returning of said trigger from said firing position to said pre-fire position and wherein said staple is rotated about said rotation point.
Claim 2
Dependent Claim
254 words
A surgical stapler for applying a staple in tissue comprising: a stapler body having a driver; a magazine connected to said stapler body, said magazine including a staple track for carrying a plurality of staples wherein each of said staples has staple legs, an anvil associated with said staple track and having a staple forming surface for forming each of said staples thereon, a feeder element spring biased against said plurality of staples for feeding each of said staples from said staple track to said anvil, a kick-off spring positioned beneath and substantially parallel to said staple track and said anvil; a trigger operatively connected to said driver for advancing said driver against said anvil so as to form said staple against said staple forming surface of said anvil, said trigger being movable from a pre-fire position to a firing position; and wherein said kick-off spring has a deflectable tip which is deflected away from said anvil by said staple legs of said staple by downwardly camming of said staple legs against said tip when said trigger is moved from said pre-fire position to said firing position, said distal ends of said staple legs being anchored in said tissue at a rotation point, said kick-off spring ejecting said staple off and away from said anvil by disengaging said staple legs with said deflectable tip by upwardly camming against said staple legs upon returning of said trigger from said firing position to said pre-fire position and wherein said staple is rotated about said rotation point.
Claim 3
Dependent Claim
21 words
The surgical stapler according to claim 1, wherein said deflectable tip of said kick-off spring includes at least one beveled surface.
Claim 4
Dependent Claim
19 words
The surgical stapler according to claim 2, wherein said at least one beveled surface includes an angled outer edge.
Claim 5
Dependent Claim
17 words
The surgical stapler according to claim 3, wherein said kick-off spring is made of a plastic material.
Claim 6
Dependent Claim
24 words
The surgical stapler according to claim 1, wherein said deflectable tip of said kick-off spring includes two beveled surfaces having a notch interposed therebetween.
Claim 7
Dependent Claim
17 words
The surgical stapler according to claim 5, wherein said two beveled surfaces include an angled outer edge.
Claim 8
Dependent Claim
17 words
The surgical stapler according to claim 6, wherein said two beveled surfaces include a substantially C-shaped configuration.
Claim 9
Dependent Claim
42 words
The surgical stapler according to claim 1, wherein said kick-off spring includes a longitudinal split along a portion of a longitudinal axis through said deflectable tip and a beveled surface located on each side of said longitudinal split at said deflectable tip.
Claim 10
Dependent Claim
21 words
The surgical stapler according to claim 8, wherein each beveled surface is deflectable toward said longitudinal axis of said kick-off spring.
Claim 11
Dependent Claim
25 words
The surgical stapler according to claim 9, wherein each beveled surface is deflectable across said longitudinal axis of said kick-off spring at said deflectable tip.
Claim 12
Dependent Claim
262 words
An improved surgical stapler for applying a staple in tissue having a stapler body and a driver contained therein, a magazine connected to said stapler body, said magazine including a staple track for carrying a plurality of staples wherein each of said staples has staple legs, an anvil associated with said staple track for providing a staple forming surface for forming each of said staples thereon, a feeder element spring biased against said plurality of staples for advancing said plurality of staples along said staple track feeding each staple from said staple track to said anvil, a trigger operatively connected to said driver for advancing said driver against said anvil so as to form said staple against said staple forming surface of said anvil, said trigger being movable from a pre-fire position, wherein the improvement comprises: a kick-off spring positioned beneath and substantially parallel to said staple track and said anvil, said kick-off spring having a deflectable tip which is deflected away from said anvil by said staple legs of said staple by downwardly camming of said staple legs against said tip when said trigger is moved from said pre-fire position to said firing position, said distal ends of said staple legs being anchored in said tissue at a rotation point, said kick-off spring ejecting said staple off and away from said anvil by disengaging said staple legs with said deflectable tip by upwardly camming against said staple legs upon returning of said trigger from said firing position to said pre-fire position and wherein said staple is rotated about said rotation point.
Claim 13
Dependent Claim
262 words
An improved surgical stapler for applying a staple in tissue having a stapler body and a driver contained therein, a magazine connected to said stapler body, said magazine including a staple track for carrying a plurality of staples wherein each of said staples has staple legs, an anvil associated with said staple track for providing a staple forming surface for forming each of said staples thereon, a feeder element spring biased against said plurality of staples for advancing said plurality of staples along said staple track feeding each staple from said staple track to said anvil, a trigger operatively connected to said driver for advancing said driver against said anvil so as to form said staple against said staple forming surface of said anvil, said trigger being movable from a pre-fire position, wherein the improvement comprises: a kick-off spring positioned beneath and substantially parallel to said staple track and said anvil, said kick-off spring having a deflectable tip which is deflected away from said anvil by said staple legs of said staple by downwardly camming of said staple legs against said tip when said trigger is moved from said pre-fire position to said firing position, said distal ends of said staple legs being anchored in said tissue at a rotation point, said kick-off spring ejecting said staple off and away from said anvil by disengaging said staple legs with said deflectable tip by upwardly camming against said staple legs upon returning of said trigger from said firing position to said pre-fire position and wherein said staple is rotated about said rotation point.
Claim 14
Dependent Claim
21 words
The surgical stapler according to claim 11, wherein said deflectable tip of said kick-off spring includes at least one beveled surface.
Claim 15
Dependent Claim
19 words
The surgical stapler according to claim 12, wherein said at least one beveled surface includes an angled outer edge.
Claim 16
Dependent Claim
17 words
The surgical stapler according to claim 13, wherein said kick-off spring is made of a plastic material.
Claim 17
Dependent Claim
24 words
The surgical stapler according to claim 11, wherein said deflectable tip of said kick-off spring includes two beveled surfaces having a notch interposed therebetween.
Claim 18
Dependent Claim
17 words
The surgical stapler according to claim 15, wherein said two beveled surfaces include an angled outer edge.
Claim 19
Dependent Claim
17 words
The surgical stapler according to claim 16, wherein said two beveled surfaces include a substantially C-shaped configuration.
Claim 20
Dependent Claim
42 words
The surgical stapler according to claim 11, wherein said kick-off spring includes a longitudinal split along a portion of a longitudinal axis through said deflectable tip and a beveled surface located on each side of said longitudinal split at said deflectable tip.
Claim 21
Dependent Claim
21 words
The surgical stapler according to claim 18, wherein each beveled surface is deflectable toward said longitudinal axis of said kick-off spring.
Claim 22
Dependent Claim
25 words
The surgical stapler according to claim 19, wherein each beveled surface is deflectable across said longitudinal axis of said kick-off spring at said deflectable tip.
Claim 23
Dependent Claim
298 words
An improved surgical stapler for applying a staple in tissue having a stapler body and a driver contained therein, a magazine connected to said stapler body, said magazine including a staple track for carrying a plurality of staples wherein each of said staples has staple legs, an anvil associated with said staple track for providing a staple forming surface for forming each of said staples thereon, a feeder element spring biased against said plurality of staples for advancing said plurality of staples along said staple track feeding each staple from said staple track to said anvil, a trigger operatively connected to said driver for advancing said driver against said anvil for forming said staple against said staple forming surface of said anvil, said trigger being movable from a pre-fire position to a firing position, wherein the improvement comprises: a kick-off spring positioned beneath and substantially parallel to said staple track and said anvil, said kick-off spring having a longitudinal axis and a longitudinal slot extending along a substantial portion of said longitudinal axis, said kick-off spring also including a deflectable tip comprising a pair of beveled tines at a distal end of said longitudinal slot, said beveled tines being inwardly deflectable toward said longitudinal axis by the camming of said staple legs of said staple against said tines when said trigger is moved from said pre-fire position to said firing position, said distal ends of said staple legs being anchored in said tissue at a rotation point, said kick-off spring ejecting said staple off and away from said anvil and disengaging said staple legs by outwardly deflecting said beveled tines away from said longitudinal axis upon returning of said trigger from said firing position to said pre-fire position and wherein said staple is rotated about said rotation point.
Claim 24
Dependent Claim
298 words
An improved surgical stapler for applying a staple in tissue having a stapler body and a driver contained therein, a magazine connected to said stapler body, said magazine including a staple track for carrying a plurality of staples wherein each of said staples has staple legs, an anvil associated with said staple track for providing a staple forming surface for forming each of said staples thereon, a feeder element spring biased against said plurality of staples for advancing said plurality of staples along said staple track feeding each staple from said staple track to said anvil, a trigger operatively connected to said driver for advancing said driver against said anvil for forming said staple against said staple forming surface of said anvil, said trigger being movable from a pre-fire position to a firing position, wherein the improvement comprises: a kick-off spring positioned beneath and substantially parallel to said staple track and said anvil, said kick-off spring having a longitudinal axis and a longitudinal slot extending along a substantial portion of said longitudinal axis, said kick-off spring also including a deflectable tip comprising a pair of beveled tines at a distal end of said longitudinal slot, said beveled tines being inwardly deflectable toward said longitudinal axis by the camming of said staple legs of said staple against said tines when said trigger is moved from said pre-fire position to said firing position, said distal ends of said staple legs being anchored in said tissue at a rotation point, said kick-off spring ejecting said staple off and away from said anvil and disengaging said staple legs by outwardly deflecting said beveled tines away from said longitudinal axis upon returning of said trigger from said firing position to said pre-fire position and wherein said staple is rotated about said rotation point.
Claim 25
Independent Claim
371 words
A method for placing a surgical staple in tissue comprising the steps of: providing a surgical stapler having a stapler body and a driver contained therein, a magazine having a contact surface connected to said stapler body, said magazine including a staple track for carrying a plurality of staples wherein each of said staples has staple legs, an anvil associated with said staple track for providing a staple forming surface for forming each of said staples thereon, a feeder element spring biased against said plurality of staples for feeding each staple from said staple track to said anvil, a trigger operatively connected to said driver for advancing said driver against said anvil for forming said staple on said staple forming surface of said anvil, said trigger being movable from a pre-fire position to a firing position, a kick-off spring positioned beneath and substantially parallel to said staple track and said anvil, said kick-off spring having a deflectable tip which is deflected away from said anvil by said staple legs of said staple by downwardly camming of said staple legs against said tip when said trigger is moved from said pre-fire position to said firing position, said kick-off spring ejecting said staple off and away from said anvil by disengaging said staple legs with said deflectable tip by upwardly camming against said staple legs upon returning of said trigger from said firing position to said pre-fire position; placing said magazine against said tissue such that said contact surface contacts said tissue; actuating said driver; forming said staple against said anvil with said driver; deflecting said deflectable tip of said kick-off spring away from said anvil by the downward camming of said staple legs of said staple with said deflectable tip of said kick-off spring as said staple is being driven into said tissue; driving said staple legs into said tissue such that said distal ends of said staple are anchored in said tissue at a rotation point; and disengaging said staple legs of said staple with said deflectable tip of said kick-off spring by upwardly camming against said staple legs for ejecting said staple off of and away from said anvil by rotating said staple about said rotation point in said tissue.
Claim 26
Independent Claim
371 words
A method for placing a surgical staple in tissue comprising the steps of: providing a surgical stapler having a stapler body and a driver contained therein, a magazine having a contact surface connected to said stapler body, said magazine including a staple track for carrying a plurality of staples wherein each of said staples has staple legs, an anvil associated with said staple track for providing a staple forming surface for forming each of said staples thereon, a feeder element spring biased against said plurality of staples for feeding each staple from said staple track to said anvil, a trigger operatively connected to said driver for advancing said driver against said anvil for forming said staple on said staple forming surface of said anvil, said trigger being movable from a pre-fire position to a firing position, a kick-off spring positioned beneath and substantially parallel to said staple track and said anvil, said kick-off spring having a deflectable tip which is deflected away from said anvil by said staple legs of said staple by downwardly camming of said staple legs against said tip when said trigger is moved from said pre-fire position to said firing position, said kick-off spring ejecting said staple off and away from said anvil by disengaging said staple legs with said deflectable tip by upwardly camming against said staple legs upon returning of said trigger from said firing position to said pre-fire position; placing said magazine against said tissue such that said contact surface contacts said tissue; actuating said driver; forming said staple against said anvil with said driver; deflecting said deflectable tip of said kick-off spring away from said anvil by the downward camming of said staple legs of said staple with said deflectable tip of said kick-off spring as said staple is being driven into said tissue; driving said staple legs into said tissue such that said distal ends of said staple are anchored in said tissue at a rotation point; and disengaging said staple legs of said staple with said deflectable tip of said kick-off spring by upwardly camming against said staple legs for ejecting said staple off of and away from said anvil by rotating said staple about said rotation point in said tissue.
References Cited (Backward Citations)
US2839753A
Cited
US2845626A
Cited
US3643851A
Cited
US4127227A
Cited
US4109844A
Cited
US4109844B1
Cited
US4196836A
Cited
US4179057A
Cited
US4396139A
Cited
US4391402A
Cited
US4406392A
Cited
US4591086A
Cited
US4411378A
Cited
US4410125A
Cited
US4979954A
Cited
US4664305A
Cited
US4523707A
Cited
US4493322A
Cited
US4596350A
Cited
US4796793A
Cited
US4648542A
Cited
US4691853A
Cited
US4747531A
Cited
US4951860A
Cited
US4811886A
Cited
US5161725A
Cited
US5240164A
Cited
US5330087A
Cited
US5044540A
Cited
US5170926A
Cited
US5251801A
Cited
US5516024A
Cited
US5715987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-05-31 | 2002-11-30 | 2003-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-05-31 | 2006-11-30 | 2007-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-05-31 | 2010-11-30 | 2011-06-01 | $7700.00 | Window Closed / Lapsed |