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Methods and systems for delivering an implant using a planetary gear actuation assembly

  • US 10,195,065 B2
  • Filed: 11/04/2015
  • Issued: 02/05/2019
  • Est. Priority Date: 11/04/2014
  • Status: Active Grant
First Claim
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1. A system for delivering an implant, the implant to be disposed within a distal end portion of an outer tubular member and positioned to be engaged by a distal end portion of an inner shaft member when the inner shaft member is moved distally relative to the outer tubular member, the inner shaft member being disposed within the outer tubular member and movable distally and proximally relative to the outer tubular member, comprising:

  • a handle;

    a trigger operatively coupled to the handle; and

    an actuation assembly operatively coupled to the trigger, the inner shaft member, and the outer tubular member, the actuation assembly havinga planet carrier;

    at least one planet gear operatively coupled to the planet carrier;

    a sun gear shaft operatively engaged with the planet gear;

    a ring gear operatively engaged with the planet gear;

    a first clutch driver configured to limit the sun gear shaft to uni-directional rotational motion; and

    a second clutch driver configured to uni-directionally lock the sun gear shaft and the planet carrier;

    a first tension member functionally coupled to the sun gear shaft and the outer tubular member; and

    a second tension member functionally coupled to the ring gear and the inner tubular member;

    wherein the actuation assembly is configured to displace the outer tubular member proximally a distance (d) relative to the handle and to separately move the inner shaft member distally a distance (x) relative to the handle upon deployment of the trigger from a first position to a second position, and further wherein the actuation assembly is configured to move the inner shaft member proximally a distance (y) relative to the handle with no displacement of the outer tubular member relative to the handle upon return of the trigger from the second position to the first position.

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