Detachable motor powered surgical instrument

  • US 10,307,163 B2
  • Filed: 07/27/2017
  • Issued: 06/04/2019
  • Est. Priority Date: 02/14/2008
  • Status: Active Grant
First Claim
Patent Images

1. A surgical instrument for cutting and stapling patient tissue, comprising:

  • a handle;

    a motor configured to output rotary motion;

    a drive system operably responsive to said rotary motion;

    a power source configured to supply power to said motor;

    an elongate shaft extending from said handle;

    a disposable loading unit attachable to said elongate shaft, wherein said disposable loading unit comprises;

    a first jaw;

    a second jaw movable relative to said first jaw between an open position and a closed position, wherein the patient tissue is clamped between said first jaw and said second jaw when said second jaw is in said closed position;

    a carrier configured to operably support a staple cartridge;

    an anvil; and

    a firing member operably responsive to said drive system, wherein said firing member is configured to move within said disposable loading unit during a firing stroke, and wherein said firing member comprises;

    a first camming member configured to engage said first jaw during said firing stroke;

    a second camming member configured to engage said second jaw during said firing stroke; and

    a knife blade configured to incise the patient tissue during said firing stroke; and

    a control circuit configured to monitor the current drawn by said motor during said firing stroke and stop said firing stroke when the current drawn by said motor exceeds a threshold value.

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