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Surgical instrument with contained dual helix actuator assembly

  • US 10,188,453 B2
  • Filed: 10/27/2016
  • Issued: 01/29/2019
  • Est. Priority Date: 09/24/2010
  • Status: Active Grant
First Claim
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1. A surgical instrument, comprising:

  • (a) a handle assembly including a rotary member rotatably extending along an axis of rotation;

    (b) an end effector;

    (c) a shaft assembly defining a longitudinal axis, wherein the longitudinal axis is parallel to the axis of rotation of the rotary member, wherein the shaft assembly includes;

    (i) a distal end portion, wherein the end effector is positioned at the distal end portion of the shaft assembly,(ii) a proximal end portion associated with the handle assembly,(iii) an articulation section positioned between the distal and proximal end portions and configured to articulate the distal end portion relative to the proximal end portion to deflect at least part of the end effector positioned at the distal end portion away from the longitudinal axis,(iv) a first lead member operatively connected between the rotary member and the articulation section and configured to translate longitudinally a first longitudinal direction, and(v) a second lead member operatively connected between the rotary member and the articulation section and configured to translate longitudinally a second longitudinal direction, wherein the second longitudinal direction is simultaneous and opposite the first longitudinal direction,wherein the rotary member is configured to be selectively rotated about the axis of rotation to direct the first and second lead members in the first and second longitudinal direction and thereby articulate the articulation section for deflecting the end effector.

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