Motor-driven surgical cutting and fastening instrument

  • US 10,278,722 B2
  • Filed: 04/08/2016
  • Issued: 05/07/2019
  • Est. Priority Date: 01/31/2006
  • Status: Active Grant
First Claim
Patent Images

1. A stapling assembly, comprising:

  • an end effector, comprising;

    a first jaw; and

    a second jaw, wherein said second jaw is movable relative to said first jaw between an unclamped position and a clamped position;

    a lockout circuit configured to detect if a staple cartridge is in said end effector;

    a firing member movable between an unfired position and a fired position during a firing stroke; and

    a drive system configured to clamp said second jaw and advance said firing member through said firing stroke, wherein said drive system comprises;

    an electric motor;

    a selectively operable first planetary gear train;

    a selectively operable second planetary gear train; and

    a switching mechanism configured to switch between the operation of said first planetary gear train and said second planetary gear train.

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