US 11,653,945 B2
Thrombectomy apparatus and method
Mark L. Jenson, Greenfield, MN (US); William J. Drasler, Minnetonka, MN (US); and Joseph M. Thielen, Buffalo, MN (US)
Assigned to Walk Vascular, LLC, Irvine, CA (US)
Filed by Walk Vascular, LLC, Irvine, CA (US)
Filed on May 24, 2019, as Appl. No. 16/421,649.
Application 16/421,649 is a continuation of application No. 15/497,357, filed on Apr. 26, 2017, granted, now 10,314,608.
Application 15/497,357 is a continuation of application No. 14/513,579, filed on Oct. 14, 2014, granted, now 9,662,137.
Application 14/513,579 is a continuation of application No. 12/040,179, filed on Feb. 29, 2008, granted, now 8,900,179, issued on Dec. 2, 2014.
Application 12/040,179 is a continuation of application No. 12/026,317, filed on Feb. 5, 2008, granted, now 8,430,837, issued on Apr. 30, 2013.
Claims priority of provisional application 60/888,265, filed on Feb. 5, 2007.
Prior Publication US 2019/0274704 A1, Sep. 12, 2019
Int. Cl. A61B 17/3203 (2006.01); A61B 17/221 (2006.01); A61M 1/00 (2006.01); A61M 25/01 (2006.01); A61M 25/09 (2006.01)
CPC A61B 17/32037 (2013.01) [A61B 17/221 (2013.01); A61M 1/84 (2021.05); A61M 25/01 (2013.01); A61M 25/09 (2013.01); A61B 2017/2212 (2013.01); A61M 2025/0183 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of performing a thrombectomy, comprising:
inserting an elongate catheter shaft into a patient's vasculature, the elongate catheter shaft comprising a low pressure lumen comprising a proximal end and a distal end, the distal end forming an opening, the elongate catheter shaft further comprising a high pressure lumen comprising a proximal end and a distal end, the high pressure lumen extending within the low pressure lumen, wherein the high pressure lumen is closed at its distal end by a plug inserted into the high pressure lumen, and wherein the high pressure lumen comprises an opening disposed near its distal end which communicates between the high pressure lumen and the low pressure lumen, and which is in proximity to the opening of the low pressure lumen;
advancing the elongate catheter shaft to a target site in the vasculature;
providing a flow of fluid through the high pressure lumen from a high pressure source such that the fluid exits from the opening of the high pressure lumen to break a thrombus within the low pressure lumen into smaller pieces when the proximal end of the low pressure lumen is coupled to a vacuum source; and
providing a vacuum through the low pressure lumen from the vacuum source to aspirate the thrombus via the low pressure lumen.