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Shape-set textile structure based mechanical thrombectomy systems

  • US 9,179,931 B2
  • Filed: 08/28/2013
  • Issued: 11/10/2015
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. A thrombectomy device comprising:

  • an elongate support structure comprising a plurality of shape-memory and radiopaque wires woven to form a textile fabric having a collapsed state and an expanded state, the elongate support structure comprising;

    a plurality of self-expanding generally spherical bulbs in the expanded state comprising;

    a first bulb;

    a second bulb distal to the first bulb, the first bulb and the second bulb having a first diameter;

    a third bulb distal to the second bulb;

    a fourth bulb distal to the third bulb, the third bulb and the fourth bulb having a second diameter smaller than the first diameter;

    a fifth bulb distal to the fourth bulb;

    a sixth bulb distal to the fifth bulb;

    a seventh bulb distal to the sixth bulb, the fifth bulb, the sixth bulb, and the seventh bulb having a third diameter smaller than the second diameter;

    an eighth bulb distal to the seventh bulb;

    a ninth bulb distal to the eighth bulb; and

    a tenth bulb distal to the ninth bulb, the eighth bulb, the ninth bulb, and the tenth bulb having a fourth diameter smaller than the third diameter,necks longitudinally between and radially inward of the self-expanding bulbs, anda distal neck distal to and radially inward of a distal-most bulb of the self-expanding bulbs, the distal neck comprising a coated distal end;

    a delivery system comprising a hypotube comprising two longitudinally interspersed and circumferentially staggered cut patterns, the cut patterns each comprising a plurality of rows each comprising two longitudinally-spaced kerfs angled with respect to a longitudinal axis of the hypotube and comprising rounded edges, wherein a longitudinally-spacing of the kerfs varies along the hypotube; and

    a bonding zone where the delivery system is coupled to the elongate support structure, the bonding zone comprising a radiopaque marker band.

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