Articulating surgical stapling instrument incorporating a two-piece e-beam firing mechanism

  • US 10,314,590 B2
  • Filed: 08/17/2017
  • Issued: 06/11/2019
  • Est. Priority Date: 07/28/2004
  • Status: Active Grant
First Claim
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1. A surgical instrument, comprising:

  • an actuatable portion operable to produce a firing motion; and

    an implement portion responsive to the firing motion from the actuatable portion, wherein the implement portion is closable during a closing motion, the implement portion comprising;

    an elongate channel coupled to the actuatable 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; and

    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, wherein the firing device is retracted and disengaged from the anvil during the closing motion, the firing device positively engaging both the elongate channel and the anvil during longitudinal firing travel to provide spacing therebetween for staple formation.

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