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Surgical instrument shaft with resiliently biased coupling to handpiece

  • US 9,421,062 B2
  • Filed: 10/12/2011
  • Issued: 08/23/2016
  • Est. Priority Date: 11/05/2010
  • Status: Active Grant
First Claim
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1. A surgical instrument comprising:

  • (a) a handle assembly comprising;

    i. a trigger,ii. a housing having a distal aperture formed in a distal end of the housing, andiv. a drive member in communication with the trigger such that actuation of the trigger is configured to actuate the drive member in a first direction; and

    (b) a transmission assembly comprising;

    i. a proximal shaft portion received within the distal aperture,ii. a rotator knob, the rotator knob having a proximal portion and a distal portion, the proximal portion received within the distal aperture, and the distal portion projecting distally from distal end of the housing, the proximal portion having a coupling feature configured to removably couple the rotator knob relative to the housing, wherein the coupling feature is further configured to uncouple the rotator knob relative to the housing such that the proximal portion of the rotator knob is configured to be removed distally from the distal aperture of the housing,iii. a distal shaft assembly extending distally relative to the rotator knob, andiv. an end effector coupled to a distal end of the distal shaft assembly;

    wherein the drive member of the handle assembly is removably coupled to the proximal shaft portion of the transmission assembly, and wherein the proximal shaft portion of the transmission assembly is configured to be removed distally from the distal aperture of the housing.

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