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Adapters with firing stroke sensing arrangements for use in connection with electromechanical surgical instruments

  • US 10,687,813 B2
  • Filed: 12/15/2017
  • Issued: 06/23/2020
  • Est. Priority Date: 12/15/2017
  • Status: Active Grant
First Claim
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1. An adapter for use with an electromechanical surgical instrument, said adapter comprising:

  • a surgical end effector comprising;

    an anvil;

    a cartridge assembly operably coupled to said anvil such that said anvil and cartridge assembly are movable relative to each other between open and closed positions, said cartridge assembly operably storing a plurality of fasteners therein; and

    a dynamic clamping assembly selectively axially movable within said surgical end effector through a firing stroke wherein, when said dynamic clamping assembly is moved from a starting position in a distal axial direction through a proximal portion of said firing stroke, said dynamic clamping assembly moves said anvil and cartridge assembly from a fully open position to a closed position and when said dynamic clamping assembly is distally advanced through an intermediate portion of said firing stroke, said dynamic clamping assembly causes at least a majority of said fasteners stored in said cartridge assembly to be ejected therefrom and when said dynamic clamping assembly is distally advanced through a distal portion of said firing stroke, said dynamic clamping assembly causes any remaining said fasteners stored in said cartridge assembly to be ejected therefrom and wherein said adapter further comprises;

    an axially movable firing member operably interfacing with a rotary drive shaft and configured to axially move said dynamic clamping assembly through said firing stroke;

    a sensor positioned adjacent a portion of said axially movable firing member in said adapter; and

    an actuator sensor movably interfacing with said portion of said axially movable firing member and configured to only be detected by said sensor when said axially movable firing member is in an intermediate actuation stroke portion, wherein said actuator sensor is biased into sensing alignment with said sensor when said axially movable firing member is located within said intermediate actuation stroke portion to communicate a signal indicative of a location of said dynamic clamping assembly to the electromechanical surgical instrument.

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