Patent ID: 11937834
Assignee: INARI MEDICAL, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 17:
18. A method for the intravascular treatment of chronic clot material from within a blood vessel of a human patient, the method comprising:
positioning a distal portion of an aspiration catheter proximate to the clot material within the blood vessel, wherein the aspiration catheter defines an aspiration lumen;
coupling a syringe to the aspiration lumen via a fluid control device, wherein (a) opening of the fluid control device fluidly connects the syringe to the aspiration lumen and (b) closing of the fluid control device fluidly disconnects the syringe from the aspiration lumen;
generating vacuum pressure with the syringe while the fluid control device is closed;
opening the fluid control device to apply the vacuum pressure to the aspiration lumen to aspirate a first portion of the chronic clot material into the aspiration lumen;
advancing a clot treatment device having an expandable member through the aspiration lumen such that the expandable member is positioned at least partially distal to a second portion of the clot material remaining within the blood vessel after the aspiration;
expanding the expandable member of the clot treatment device within the blood vessel distal of the clot material, wherein the expandable member includes a plurality of interconnected struts forming a unitary structure having a proximal region and a distal region, wherein the struts form a plurality of first cells in the proximal region and a plurality of second cells in the distal region, and wherein the first cells are larger than the second cells; and
proximally retracting the expandable member through the second portion of the clot material to capture and/or disrupt the second portion of the clot material.