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Multi-pivot thrombectomy device

  • US 9,924,959 B2
  • Filed: 04/18/2016
  • Issued: 03/27/2018
  • Est. Priority Date: 11/06/2012
  • Status: Active Grant
First Claim
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1. A device for retrieving vascular debris in a vasculature, the device comprising:

  • at least three segments radially expandable from a collapsed state to an expanded state, each of the at least three segments having a waist comprising a radially largest region of the segment;

    at least one intermediate portion, each of the at least one intermediate portion connecting adjacent segments and having a diameter less than a diameter of the waist;

    wherein each of the at least three segments comprises a proximal end and a distal end that are connected by only struts and sub-struts, the struts and sub-struts extending radially outside the diameter of the at least one intermediate portion, wherein, in each of the at least three segments, at least one strut extends proximally from the distal end and along a first longitudinal region of the segment and divides into at least two sub-struts, the at least two sub-struts being entirely within a second longitudinal region of the segment that is outside the radially largest region of the segment, the struts tapering from the waist radially inwardly toward a longitudinal axis of the device as the struts approach an adjacent intermediate portion;

    wherein the at least three segments and the at least one intermediate portion form a single monolithic structure;

    wherein each intermediate portion forms a circumferentially continuous hollow cylinder.

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