US 12,446,903 B2
Aspiration thrombectomy system and methods for thrombus removal with aspiration catheter
Derek Dee Deville, Coral Gables, FL (US); Matthew A. Palmer, Miami, FL (US); William T. Bales, Miami, FL (US); M. Sean McBrayer, Coral Gables, FL (US); Eric Peterson, Homestead, FL (US); Richard Cartledge, Boca Raton, FL (US); Thomas O. Bales, Jr., Miami, FL (US); and Carlos Rivera, Cooper City, FL (US)
Assigned to RapidPulse, Inc., Miami, FL (US)
Filed by RapidPulse, Inc., Miami, FL (US)
Filed on Dec. 2, 2022, as Appl. No. 18/061,094.
Application 18/061,094 is a continuation of application No. 16/899,514, filed on Jun. 11, 2020.
Application 16/899,514 is a continuation of application No. 16/681,564, filed on Nov. 12, 2019, granted, now 10,722,253, issued on Jul. 28, 2020.
Application 16/899,514 is a continuation of application No. PCT/US2019/042546, filed on Jul. 19, 2019.
Application 16/681,564 is a continuation of application No. 16/516,232, filed on Jul. 18, 2019, granted, now 10,531,883, issued on Jan. 14, 2020.
Application PCT/US2019/042546 is a continuation of application No. 16/516,232, filed on Jul. 18, 2019, granted, now 10,531,883, issued on Jan. 14, 2020.
Claims priority of provisional application 62/750,011, filed on Oct. 24, 2018.
Claims priority of provisional application 62/701,086, filed on Jul. 20, 2018.
Prior Publication US 2023/0100426 A1, Mar. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/22 (2006.01); A61B 17/00 (2006.01); A61F 2/01 (2006.01); A61M 25/00 (2006.01)
CPC A61B 17/22 (2013.01) [A61F 2/013 (2013.01); A61M 25/0075 (2013.01); A61B 2017/00022 (2013.01); A61B 2017/00154 (2013.01); A61B 2017/22079 (2013.01); A61B 2017/22082 (2013.01); A61B 2217/007 (2013.01); A61F 2/011 (2020.05)] 17 Claims
OG exemplary drawing
 
1. An aspiration thrombectomy system, comprising:
a catheter system including an aspiration catheter having a proximal portion, a distal end and a lumen extending through the aspiration catheter;
a vacuum source fluidically coupled to the catheter system;
a vacuum valve connected between the vacuum source and the proximal portion of the aspiration catheter to control a vacuum flow in the catheter lumen;
a vent valve fluidically coupled to the proximal portion of the aspiration catheter, the vent valve being configured to control a flow of a vent fluid in the catheter lumen;
and
a controller configured to open and close the vacuum valve and the vent valve in at least a first predetermined sequence comprising a vacuum-only state in which the vacuum valve is open and the vent valve is closed, a first off-off state following the vacuum-only state in which both the vacuum valve and the vent valve are closed, a vent-only state in which the vent valve is open and the vacuum valve is closed, and a second off-off state after the vent- only state in which both the vacuum valve and the vent valve are closed, wherein-
(a) the first off-off state lasts a predetermined period of time from 5.2 ms to less than the time for a pressure pulse to propagate from the vacuum valve to the distal end of the catheter,
(b) the second off-off state lasts a predetermined period of time, and
(c) the first predetermined sequence is repeated at a first frequency of approximately 6 Hz to approximately 16 Hz.