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End-effector force measurement drive circuit

  • US 10,175,127 B2
  • Filed: 03/27/2015
  • Issued: 01/08/2019
  • Est. Priority Date: 05/05/2014
  • Status: Active Grant
First Claim
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1. A surgical instrument for applying fasteners, comprising:

  • a handle assembly;

    a drive motor disposed within the handle assembly;

    a replaceable loading unit having an end-effector assembly; and

    an adapter configured to releaseably couple to the handle assembly and to releaseably couple to the replaceable loading unit such that the replaceable loading unit is coupled to the drive motor, the adapter including a strain gauge and a drive circuit directly coupled to the strain gauge, the drive circuit including a microprocessor within the adapter, wherein the strain gauge and the drive circuit are configured to directly measure a driving force in the adapter.

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