US 12,343,480 B2
Methods and systems for treatment of acute ischemic stroke
Michi E. Garrison, San Mateo, CA (US); and Tony M. Chou, San Mateo, CA (US)
Assigned to Route 92 Medical, Inc., San Mateo, CA (US)
Filed by Route 92 Medical, Inc., San Mateo, CA (US)
Filed on Nov. 9, 2020, as Appl. No. 17/093,401.
Application 17/093,401 is a continuation of application No. 16/931,234, filed on Jul. 16, 2020, granted, now 10,864,351.
Application 16/931,234 is a continuation of application No. 15/699,401, filed on Sep. 8, 2017, granted, now 11,318,282.
Application 15/699,401 is a continuation of application No. 15/425,460, filed on Feb. 6, 2017, granted, now 10,471,233, issued on Nov. 12, 2019.
Application 15/425,460 is a continuation of application No. 14/576,953, filed on Dec. 19, 2014, granted, now 9,561,345, issued on Feb. 7, 2017.
Claims priority of provisional application 62/083,128, filed on Nov. 21, 2014.
Claims priority of provisional application 62/075,169, filed on Nov. 4, 2014.
Claims priority of provisional application 62/075,101, filed on Nov. 4, 2014.
Claims priority of provisional application 62/046,112, filed on Sep. 4, 2014.
Claims priority of provisional application 62/029,799, filed on Jul. 28, 2014.
Claims priority of provisional application 61/919,945, filed on Dec. 23, 2013.
Prior Publication US 2021/0069467 A1, Mar. 11, 2021
Int. Cl. A61M 25/00 (2006.01); A61B 17/22 (2006.01); A61B 17/3207 (2006.01); A61B 17/34 (2006.01); A61F 2/01 (2006.01); A61M 25/01 (2006.01); A61M 25/06 (2006.01); A61M 29/00 (2006.01); A61B 17/00 (2006.01); A61B 17/221 (2006.01); A61B 90/00 (2016.01); A61M 25/10 (2013.01)
CPC A61M 25/0054 (2013.01) [A61B 17/22 (2013.01); A61B 17/320758 (2013.01); A61B 17/3417 (2013.01); A61F 2/013 (2013.01); A61M 25/0023 (2013.01); A61M 25/0041 (2013.01); A61M 25/0043 (2013.01); A61M 25/0068 (2013.01); A61M 25/01 (2013.01); A61M 25/0662 (2013.01); A61M 29/00 (2013.01); A61B 2017/00867 (2013.01); A61B 2017/00991 (2013.01); A61B 2017/22034 (2013.01); A61B 2017/22038 (2013.01); A61B 2017/22039 (2013.01); A61B 2017/22042 (2013.01); A61B 2017/22054 (2013.01); A61B 2017/22062 (2013.01); A61B 2017/22067 (2013.01); A61B 2017/22072 (2013.01); A61B 2017/22074 (2013.01); A61B 2017/22079 (2013.01); A61B 2017/22082 (2013.01); A61B 2017/22084 (2013.01); A61B 2017/22094 (2013.01); A61B 2017/2212 (2013.01); A61B 2017/2215 (2013.01); A61B 2017/2217 (2013.01); A61B 2017/320775 (2013.01); A61B 2017/3484 (2013.01); A61B 2017/3486 (2013.01); A61B 2090/062 (2016.02); A61M 2025/0004 (2013.01); A61M 2025/0037 (2013.01); A61M 2025/0042 (2013.01); A61M 25/0053 (2013.01); A61M 25/007 (2013.01); A61M 2025/0175 (2013.01); A61M 2025/0681 (2013.01); A61M 2025/1052 (2013.01); A61M 2210/12 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A suction catheter system comprising:
an arterial access device comprising:
a tubular shaft having a proximal end, a distal opening, and a central lumen having an inner diameter; and
a proximal section operably connected with the proximal end of the tubular shaft and having a fitting that connects to a suction device; and
an extension catheter comprising:
a distal catheter portion having a proximal end, a distal end, and only a single lumen extending between the proximal end and the distal end of the distal catheter portion; and
a proximal tether extending proximally from a point of attachment with the distal catheter portion, wherein the proximal tether is capable of controlling movement of the extension catheter,
wherein the extension catheter is configured to telescopically slide through the central lumen of the tubular shaft, out of the distal opening until the distal end of the distal catheter portion reaches the target site,
wherein an outer diameter of a proximal end region of the distal catheter portion is larger than an outer diameter of a distal end region of the distal catheter portion, and wherein the distal catheter portion of the extension catheter comprises a step up from the outer diameter of the distal end region of the distal catheter portion to the outer diameter of the proximal end region of the distal catheter portion while the single lumen of the distal catheter portion has an inner diameter through the distal end region and an inner diameter through the proximal end region, including where the step up is located, that remain unchanged, wherein the step up is over a transition section that is between 3 mm and 10 mm, and
wherein the proximal end region of the distal catheter portion and the inner diameter of the central lumen forms a seal and the seal forms a contiguous lumen extending from the distal end of the distal catheter portion to the proximal end of the arterial access device, and
wherein the distal catheter portion is flexible to navigate around a 180° bend with a radius of 0.100″ without kinking and does not collapse when connected to a vacuum up to 25 inHg while navigating around the 180° bend.