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Wire collection device for stent delivery system

  • US 9,974,677 B2
  • Filed: 08/15/2014
  • Issued: 05/22/2018
  • Est. Priority Date: 08/20/2013
  • Status: Active Grant
First Claim
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1. A wire collection device for a stent delivery system, the wire collection device comprising:

  • a plurality of nested wire collection drums comprising a first drum concentric in at least one second drum, the at least one second drum comprising an inner diameter larger than an outer diameter of the first drum;

    a retraction wire attached to the first drum and extending through a slot of the at least one second drum;

    a thumbwheel coupled to the first drum and rotatable to actuate rotation of the first drum to collect the retraction wire around the outer diameter of the first drum, the retraction wire connected to a proximal end of an outer sheath of the stent delivery system; and

    a catching mechanism rotatable about the first drum so as to engage a catch portion of the at least one second drum to actuate rotation of the at least one second drum to collect the retraction wire around an outer diameter of the at least one second drum, thereby increasing a collection diameter of the retraction wire to provide a mechanical advantage for sheath retraction.

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