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Vascular device visibility

  • US 10,265,089 B2
  • Filed: 02/12/2016
  • Issued: 04/23/2019
  • Est. Priority Date: 02/12/2016
  • Status: Active Grant
First Claim
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1. A method for engaging a thrombus, the method comprising:

  • (a) advancing a thrombectomy device, using an elongate manipulation member, to a location radially adjacent to a thrombus in a blood vessel, the thrombectomy device comprising a working length and a non-working length, the non-working length comprising a mesh portion disposed between and separating the working length and a connection between the thrombectomy device and the elongate manipulation member, the non-working length having a connection marker disposed at the connection, the working length having a proximal end and a distal end with a plurality of proximal markers disposed at the proximal end, a plurality of distal markers, discrete from the proximal markers, disposed at the distal end; and

    a plurality of intermediate markers between the plurality of proximal markers and the plurality of distal markers;

    (b) positioning the thrombectomy device relative to the thrombus such that all of the proximal markers are proximal to or longitudinally aligned with a proximal end of the thrombus and all of the distal markers are distal to or longitudinally aligned with a distal end of the thrombus;

    (c), after (b), expanding the thrombectomy device into the thrombus;

    (d) determining whether a maximum marker separation of the plurality of intermediate markers is less than a maximum marker separation of either the plurality of proximal markers or plurality of distal markers; and

    (e) determining a state of engagement of the working length with the thrombus by observing the proximal, intermediate, and distal plurality of markers.

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