ARTICULATING SURGICAL STAPLING INSTRUMENT INCORPORATING A TWO-PIECE E-BEAM FIRING MECHANISM

  • US 20180070946A1
  • Filed: 08/17/2017
  • Published: 03/15/2018
  • Est. Priority Date: 07/28/2004
  • Status: Active Grant
First Claim
Patent Images

1. A surgical instrument comprising:

  • a handle portion operable to produce a firing motion; and

    an implement portion responsive to the firing motions from the handle portion, the implement portion comprising;

    an elongate channel coupled to the handle portion and including a channel slot,a staple cartridge received by the elongate channel and incorporating a proximally positioned wedge member aligned to cam upward a driver supporting a staple,an anvil pivotally coupled to the elongate channel and including an anvil channel,a firing device including a distally presented cutting edge longitudinally received between the elongate channel and the anvil, an upper member engageable to the anvil channel, a lower member engaging the channel slot, and a middle member operable to actuate the staple cartridge by distally translating the wedge member of the staple cartridge, the firing device positively engaging both the elongate channel and the anvil during longitudinal firing travel to provide spacing therebetween for staple formation,an articulation joint proximally coupled to the elongate channel, anda thinned firing strip proximally attached to the firing device for transferring the firing motion from the handle portion through the articulation joint.

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