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Four bar articulation mechanism for tissue specimen retrieval device

  • US 10,667,800 B2
  • Filed: 05/08/2018
  • Issued: 06/02/2020
  • Est. Priority Date: 05/08/2018
  • Status: Active Grant
First Claim
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1. A tissue specimen retrieval device, comprising:

  • a housing;

    an outer shaft extending distally from the housing and defining a longitudinal axis;

    an end effector assembly extending distally from the outer shaft in a deployed position of the end effector assembly;

    a first actuator operably associated with the housing and actuatable to deploy and retract the end effector assembly; and

    a second actuator operably associated with the housing and actuatable to selectively move a four-bar articulation mechanism, the four-bar articulation mechanism including first, second and third movable links and a stationary link coupled together by respective first, second and third pivots, wherein actuation of the second actuator moves the first link distally which forces the second and third links to rotate in opposing directions about the first and second pivots while the third link is anchored by the third pivot which, in turn, forces at least one of the first or second links against the end effector assembly to articulate the same.

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