US 12,144,915 B2
Methods and systems for treatment of acute ischemic stroke
Michi E. Garrison, Sunnyvale, CA (US); Tony M. Chou, Sunnyvale, CA (US); and Gregory M. Hyde, Sunnyvale, CA (US)
Assigned to Silk Road Medical, Inc., Sunnyvale, CA (US)
Filed by Silk Road Medical, Inc., Sunnyvale, CA (US)
Filed on Apr. 17, 2023, as Appl. No. 18/301,838.
Application 18/301,838 is a continuation of application No. 16/880,594, filed on May 21, 2020, granted, now 11,654,222.
Application 16/880,594 is a continuation of application No. 16/297,348, filed on Mar. 8, 2019, granted, now 11,103,627, issued on Aug. 31, 2021.
Application 16/297,348 is a continuation of application No. 12/645,179, filed on Dec. 22, 2009, granted, now 10,226,563, issued on Mar. 12, 2019.
Claims priority of provisional application 61/176,463, filed on May 7, 2009.
Claims priority of provisional application 61/140,601, filed on Dec. 23, 2008.
Prior Publication US 2024/0091424 A1, Mar. 21, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 1/36 (2006.01); A61B 17/22 (2006.01); A61B 17/3207 (2006.01); A61M 25/00 (2006.01); A61M 25/06 (2006.01); A61M 25/10 (2013.01); A61M 29/02 (2006.01); A61N 7/00 (2006.01)
CPC A61M 1/3621 (2013.01) [A61B 17/320725 (2013.01); A61M 1/3613 (2014.02); A61M 1/3656 (2014.02); A61M 1/3659 (2014.02); A61M 25/0662 (2013.01); A61M 25/10 (2013.01); A61N 7/00 (2013.01); A61B 17/22004 (2013.01); A61B 2017/320716 (2013.01); A61B 2017/320733 (2013.01); A61M 1/3653 (2013.01); A61M 2025/0031 (2013.01); A61M 2025/0037 (2013.01); A61M 2025/0042 (2013.01); A61M 25/007 (2013.01); A61M 2025/0681 (2013.01); A61M 2025/1052 (2013.01); A61M 29/02 (2013.01); A61M 2205/7545 (2013.01); A61N 2007/0043 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for treating stroke, comprising:
forming a penetration in a wall of common carotid artery;
applying a closure device upon commencement of the procedure at a site of the penetration and before placement of any structure through the penetration;
positioning an arterial access sheath having an occlusion element through the penetration such that the occlusion element is positioned within an internal carotid artery;
occluding the internal carotid artery;
inserting a distal catheter having an aspiration lumen into an intracranial artery through the access sheath, the distal catheter further having a distal-most end that defines an opening into the aspiration lumen;
treating a thrombotic blockage in the intracranial artery by positioning the distal-most end of the distal catheter so that the distal-most end is located immediately adjacent the thrombotic blockage in the intracranial artery;
aspirating material from the thrombotic blockage in the intracranial artery into the opening at the distal-most end of the distal catheter such that the aspiration causes the material from the thrombotic blockage to flow into the opening at the distal-most end of the distal catheter;
removing the arterial access sheath from the penetration; and
closing the penetration with sutures of the closure device.