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Devices and methods for vascular recanalization

  • US 9,931,495 B2
  • Filed: 03/23/2015
  • Issued: 04/03/2018
  • Est. Priority Date: 02/23/2010
  • Status: Active Grant
First Claim
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1. A method of treating an embolism comprising:

  • delivering an embolectomy device to an embolism that at least, partially restricts blood flow through a blood vessel, wherein the embolectomy device comprises an expandable member having a first expandable portion, a second expandable portion, and a third expandable portion, each of the first expandable portion, the second expandable portion, and the third expandable portion comprising a mesh, the meshes of the first expandable portion and the third expandable portion having a first mesh density, the mesh of the second expandable portion having a second mesh density, the second mesh density being less than the first mesh density when the first expandable portion, the second expandable portion, and the third expandable portion are expanded to the same extent, wherein at least a portion of the expandable member is configured to expand outwardly to engage at least a portion of the embolism or blood vessel wall;

    deploying the embolectomy device within the embolism so as to restore blood flow through the embolism and, form a flow channel through the embolism while the expandable member of the embolectomy device is expanded, wherein the embolectomy device in a deployed configuration comprises first and third portions expanded to a greater extent than the second portion, the second expandable portion being disposed between the first and third expandable portions, and wherein the first and third expandable portions project radially outward beyond the second portion;

    moving the embolectomy device and at east a portion of the embolism along the blood vessel; and

    withdrawing the embolectomy device and at least a portion of the embolism from the blood vessel.

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