Surgical Stapling Instrument With A Geared Return Mechanism
First Claim
1. A surgical instrument, comprising:
- an end effector;
a firing member;
a trigger;
a firing drive selectively engageable with said firing member, wherein said firing drive is configured to advance said firing member relative to said end effector upon an actuation of said trigger; and
a reversing drive selectively engageable with said firing member, wherein said reversing drive includes a gear configured to retract said firing member relative to said end effector upon a subsequent actuation of said trigger.
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0 Petitions
Accused Products
Abstract
A surgical instrument including a firing drive configured to selectively advance a firing member and/or cutting member relative to an end effector and, in addition, a reversing drive configured to selectively retract the firing member and/or cutting member relative to the end effector. The firing drive can include a pawl which can be selectively engaged with the firing member in order to advance the firing member, wherein the pawl can be disengaged from the firing member when the reversing drive is engaged with the firing member. The reversing drive can include a gear train having a first gear operably engaged with the firing member and, in addition, a second gear operably engaged with the first gear, wherein the second gear can be selectively operable with the trigger such that an actuation of the trigger can retract the firing member and/or cutting element via the first and second gears.
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Citations
30 Claims
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1. A surgical instrument, comprising:
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an end effector; a firing member; a trigger; a firing drive selectively engageable with said firing member, wherein said firing drive is configured to advance said firing member relative to said end effector upon an actuation of said trigger; and a reversing drive selectively engageable with said firing member, wherein said reversing drive includes a gear configured to retract said firing member relative to said end effector upon a subsequent actuation of said trigger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A surgical instrument, comprising:
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an end effector; a firing drive, comprising; a trigger; a firing member; and a pawl operably engaged with said trigger, wherein said trigger is configured to advance said pawl, and wherein said pawl is selectively engageable with said firing member to advance said firing member relative to said end effector upon an actuation of said trigger; and a return mechanism selectively engageable with said firing member to retract said firing member relative to said end effector upon a subsequent actuation of said trigger, wherein said return mechanism is configured to selectively disengage said pawl from said firing member when said return mechanism is engaged with said firing member. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A surgical instrument, comprising:
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an end effector; a firing member; a trigger; a firing drive selectively engageable with said firing member, wherein said firing drive is configured to advance said firing member relative to said end effector upon an actuation of said trigger; and a gear train, comprising; a first gear operably engaged with said firing member; a second gear operably engaged with said trigger, wherein said second gear is selectively operable with said first gear such that a subsequent actuation of said trigger retracts said firing drive relative to said end effector. - View Dependent Claims (22, 23, 24, 25)
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26. A surgical instrument, comprising:
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an end effector; a firing member; a trigger; a firing drive selectively engageable with said firing member, wherein said firing drive is configured to advance said firing member relative to said end effector upon a first actuation of said trigger; a reversing drive selectively engageable with said firing member to retract said firing member relative to said end effector upon a subsequent actuation of said trigger; and an anti-backup mechanism configured to substantially prevent said firing member from being retracted relative to said end effector prior to said subsequent actuation of said trigger. - View Dependent Claims (27, 28, 29, 30)
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Specification