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Methods of treating a thrombus in an artery using cyclical aspiration patterns

  • US 10,342,655 B2
  • Filed: 01/04/2019
  • Issued: 07/09/2019
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. A method of treating a thrombus in an artery using a repetitive cyclical pattern for aspiration, the method comprising:

  • inserting a distal end of a catheter into the artery, wherein the thrombus is distal to the distal end of the catheter, the catheter being a microcatheter, a distal access microcatheter, or a guide catheter, the thrombus causing acute ischemic stroke due to occlusion of the artery;

    choosing the cyclical pattern from a plurality of stored cyclical patterns, the cyclical pattern comprising repetition of a first suction level, a second suction level different than the first suction level;

    aspirating the thrombus using negative pressure through the catheter, the negative pressure varying according to the chosen cyclical pattern generated by power electronics of an automated negative suction device; and

    arresting flow in the artery including inflating a balloon proximal to the thrombus and stopping anterograde forward flow proximal to the thrombus during aspirating the thrombus.

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