Surgical instrument system including replaceable end effectors

  • US 10,874,391 B2
  • Filed: 12/22/2015
  • Issued: 12/29/2020
  • Est. Priority Date: 06/28/2012
  • Status: Active Grant
First Claim
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1. A surgical instrument system, comprising:

  • a housing, wherein the housing comprises a motor-driven drive shaft;

    a first end effector assembly configured to be coupled to and decoupled from the housing, wherein the first end effector assembly defines a first firing path having a first firing length, the first end effector assembly comprising;

    a first electrical circuit configured to transmit a first identification signal;

    a first firing member configured to travel along the first firing path, wherein the first firing member comprises;

    a first sled configured to eject staples; and

    a first cutting member configured to cut tissue; and

    a first drive screw configured to be operably coupled to and operably decoupled from the motor-driven drive shaft, wherein the first drive screw is configured to engage the first firing member such that rotation of the first drive screw causes the first firing member to travel along the first firing path, and wherein the first drive screw comprises a first rotatable proximal connector nested within a first twist-to-lock proximal housing connector assembly; and

    a second end effector assembly configured to be coupled to and decoupled from the housing, wherein the second end effector assembly defines a second firing path having a second firing length, and wherein the second firing length is different than the first firing length, the second end effector assembly comprising;

    a second electrical circuit configured to transmit a second identification signal;

    a second firing member configured to travel along the second firing path, wherein the second firing member comprises;

    a second sled configured to eject staples; and

    a second cutting member configured to cut tissue; and

    a second drive screw configured to be operably coupled to and operably decoupled from the motor-driven drive shaft, wherein the second drive screw is configured to engage the second firing member such that rotation of the second drive screw causes the second firing member to travel along the second firing path, and wherein the second drive screw comprises a second rotatable proximal connector nested within a second twist-to-lock proximal housing connector assembly; and

    a control circuit configured for signal communication with the first and second electrical circuits, wherein the control circuit is further configured to;

    transmit a first control signal based on the first identification signal, wherein the first control signal operates to cause the first firing member to travel the first firing length; and

    transmit a second control signal based on the second identification signal, wherein the second control signal operates to cause the second firing member to travel the second firing length.

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