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Cerebral vasculature device

  • US 9,622,770 B2
  • Filed: 11/06/2014
  • Issued: 04/18/2017
  • Est. Priority Date: 09/22/2006
  • Status: Active Grant
First Claim
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1. A cerebral vascular device for capture and removal of thrombus, said cerebral vascular device comprising:

  • a catheter defining a lumen extending longitudinally therethrough, the catheter having a continuous braided structure comprising a plurality of wires, the catheter having a proximal portion wherein a polymer is embedded substantially throughout the braided structure, the catheter having a distal portion, the catheter having first and second expandable portions disposed between the proximal portion and the distal portion and an intermediate portion located between the first expandable portion and the second expandable portion, the braided structure along the distal portion and first and second expandable portions of the catheter being exposed and not covered by the polymer,an elongated core wire extending longitudinally through the lumen; and

    an atraumatic component being attached to the core wire and being entirely distal of the braided structure;

    wherein, in response to axial displacement of the proximal and distal portions of the braided structure toward each other, the first and second expandable portions expand radially outwardly to a maximum expanded diameter and flatten axially and the intermediate portion and remaining portions of the braided structure are restrained from axially expanding and remain aligned with the lumen of the catheter, andwherein the braid angle of the first and second expandable portions is about less than or equal to 10 degrees as measured from a longitudinal axis of the braided structure, and the intermediate portion and portions of the braided structure adjacent the first and second expandable portions have a braid angle that is substantially greater than 10 degrees as measured from a longitudinal axis of the braided structure such that the intermediate portion and remaining portions of the braided structure are restrained from axially expanding and remain aligned with the lumen of the catheter.

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