US 11,793,532 B2
Devices, systems and methods to remove blood clots
Paul A. Spence, Louisville, KY (US)
Assigned to Ischemicure Ltd., Louisville, KY (US)
Filed by Ischemicure Ltd., Louisville, KY (US)
Filed on Jul. 19, 2021, as Appl. No. 17/379,566.
Application 17/379,566 is a continuation of application No. 16/637,046, granted, now 11,065,017, previously published as PCT/US2019/015220, filed on Jan. 25, 2019.
Claims priority of provisional application 62/775,510, filed on Dec. 5, 2018.
Claims priority of provisional application 62/654,693, filed on Apr. 9, 2018.
Claims priority of provisional application 62/621,776, filed on Jan. 25, 2018.
Prior Publication US 2021/0386439 A1, Dec. 16, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/22 (2006.01); A61B 17/221 (2006.01); A61F 2/844 (2013.01); A61F 2/958 (2013.01); A61B 17/3203 (2006.01); A61M 1/00 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/221 (2013.01) [A61B 17/22 (2013.01); A61B 17/32037 (2013.01); A61F 2/844 (2013.01); A61F 2/958 (2013.01); A61M 1/75 (2021.05); A61M 1/79 (2021.05); A61M 1/85 (2021.05); A61B 2017/00323 (2013.01); A61B 2017/00867 (2013.01); A61B 2017/22079 (2013.01)] 40 Claims
OG exemplary drawing
 
1. A method of using an intravascular device for removing a blood clot from a blood vessel, the method comprising:
introducing a catheter having a radially expandable proximal member into the blood vessel and proximal to the blood clot, the proximal member defining an opening at its distal end;
introducing an elongate body having a radially expandable distal seal distally relative to the catheter and beyond the blood clot such that the distal seal is disposed distal to the blood clot, the distal seal defining an opening at its proximal end;
with the distal seal disposed distal to the blood clot, allowing the distal seal to self-expand from a constrained position to an unconstrained position, and introducing gas into an area between the blood clot and a distal end of the distal seal to increase a pressure within the area to simultaneously (1) further expand the distal seal to form a fluid pressure seal against an interior wall surface of the blood vessel distal to the blood clot, and (2) apply pressure to the clot, thereby urging the blood clot towards and into at least a portion of the proximal member; and
circumferentially surrounding at least a portion of the blood clot with the proximal member, and removing the blood clot from the blood vessel by withdrawing the proximal member.