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Powered stapling apparatus

  • US 9,592,056 B2
  • Filed: 03/05/2014
  • Issued: 03/14/2017
  • Est. Priority Date: 03/14/2013
  • Status: Active Grant
First Claim
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1. A stapler, comprising:

  • a handle assembly;

    a shaft extending distally from the handle assembly;

    a tool assembly configured to selectively couple to the shaft and including a cartridge assembly and an anvil assembly, the cartridge assembly including a staple guide defining a tissue contacting surface and a plurality of staple retaining slots therein;

    a resilient member operably positioned within the cartridge assembly and configured to bias the staple guide distally to provide a predetermined compressive force against tissue when the cartridge assembly and anvil assembly are approximated toward one another; and

    a microcontroller configured to operably communicate with a motor and a power source configured to energize the motor, wherein the microcontroller is in operable communication with the cartridge assembly and configured to test a spring constant of the resilient member.

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