US 12,201,507 B2
Intravascular blood filters and methods of use
Michael Lee, Santa Rosa, CA (US); Daniel W. Fifer, Windsor, CA (US); and Randall T. Lashinski, Windsor, CA (US)
Assigned to Claret Medical, Inc., Santa Rosa, CA (US)
Filed by Claret Medical, Inc., Santa Rosa, CA (US)
Filed on Mar. 10, 2022, as Appl. No. 17/691,727.
Application 17/691,727 is a continuation of application No. 16/144,468, filed on Sep. 27, 2018, granted, now 11,284,986.
Application 16/144,468 is a continuation of application No. 15/080,345, filed on Mar. 24, 2016, abandoned.
Application 15/080,345 is a continuation of application No. 12/871,708, filed on Aug. 30, 2010, granted, now 9,326,843, issued on May 3, 2016.
Application 12/871,708 is a continuation in part of application No. 12/689,997, filed on Jan. 19, 2010, granted, now 8,372,108, issued on Feb. 12, 2013.
Claims priority of provisional application 61/348,979, filed on May 27, 2010.
Claims priority of provisional application 61/334,893, filed on May 14, 2010.
Claims priority of provisional application 61/244,418, filed on Sep. 21, 2009.
Claims priority of provisional application 61/145,149, filed on Jan. 16, 2009.
Prior Publication US 2022/0192812 A1, Jun. 23, 2022
Int. Cl. A61F 2/01 (2006.01); A61M 25/01 (2006.01)
CPC A61F 2/012 (2020.05) [A61F 2/0105 (2020.05); A61F 2/014 (2020.05); A61M 25/0147 (2013.01); A61F 2002/018 (2013.01); A61F 2230/0006 (2013.01); A61F 2230/0008 (2013.01); A61F 2230/0067 (2013.01); A61F 2230/008 (2013.01); A61M 25/0133 (2013.01); A61M 2025/0161 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of preventing embolic material from entering cerebral vasculature, the method comprising:
introducing a protection system into an aortic arch artery, the protection system comprising:
a proximal shaft having a first outer diameter;
a distal shaft slidable within the proximal shaft, the distal shaft defining a sleeve at a distal end thereof, wherein the sleeve has a second outer diameter substantially equal to the first outer diameter;
a proximal filter configured to be disposed within the proximal shaft during delivery;
a distal filter that when delivered from within the sleeve is configured and adapted to prevent debris from entering a left common carotid artery;
deploying the proximal filter from a distal end of the proximal shaft in a location configured to prevent debris from flowing into a right common carotid artery and a right subclavian artery; and
after deploying the proximal filter, then deploying the distal filter to a location distal to the proximal filter;
wherein the protection system is introduced into the aortic arch artery with a proximal end of the sleeve abutting the distal end of the proximal shaft.