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Intravascular treatment of vascular occlusion and associated devices, systems, and methods

  • US 10,524,811 B2
  • Filed: 11/22/2017
  • Issued: 01/07/2020
  • Est. Priority Date: 10/23/2015
  • Status: Active Grant
First Claim
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1. A method of treating deep vein thrombosis in a peripheral vasculature of a patient, the method comprising:

  • percutaneously accessing a venous vessel of a patient with an introducer sheath through an access site into the venous vessel of the patient;

    inserting a catheter constraining a thrombus extraction device through a lumen of the introducer sheath to proximate the vascular thrombus in the venous vessel, wherein the thrombus extraction device comprises a proximal self-expanding coring portion having a substantially unobstructed flow path and a distal expandable tubular portion formed of a mesh structure, wherein a proximal end of the mesh structure is coupled to a distal end of the coring portion, wherein a proximal end of the coring portion is coupled to a distal end of a first shaft of the catheter, and wherein a distal end of the mesh structure is coupled to a distal end of a second shaft of the catheter that extends at least partially through the first shaft;

    deploying the thrombus extraction device from the catheter from a constrained configuration to an expanded configuration until the coring portion of the thrombus extraction device is beyond a distal end of the catheter;

    retracting the thrombus extraction device proximally so that the coring portion cores and separates the portion of the vascular thrombus from a venous vessel wall while the mesh structure captures the vascular thrombus portion; and

    withdrawing the thrombus extraction device from the patient.

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