US 12,232,751 B2
Aspiration thrombectomy system and methods for dynamic system state detection
Cheng Yong Timothy Thio, Davis, CA (US); Lincoln Herbert Davidson, Fargo, ND (US); Scott Teigen, West Fargo, ND (US); and Corey Teigen, Rosholt, SD (US)
Assigned to Penumbra, Inc., Alameda, CA (US)
Filed by Penumbra, Inc., Alameda, CA (US)
Filed on Aug. 3, 2023, as Appl. No. 18/365,127.
Application 18/365,127 is a continuation of application No. 17/991,536, filed on Nov. 21, 2022, granted, now 11,730,499.
Claims priority of provisional application 63/426,688, filed on Nov. 18, 2022.
Prior Publication US 2024/0164800 A1, May 23, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/22 (2006.01); A61B 17/00 (2006.01); A61M 1/00 (2006.01)
CPC A61B 17/22 (2013.01) [A61M 1/77 (2021.05); A61B 2017/00292 (2013.01); A61B 2017/22079 (2013.01); A61M 2205/3331 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An aspiration thrombectomy system, comprising:
an aspiration catheter configured to accommodate fluid;
connection tubing coupled to the aspiration catheter, wherein the connection tubing is configured to act as a common conduit for fluid communication between the aspiration catheter and a vacuum source;
one or more controllable valves, wherein each valve is configured to operate in a plurality of operational states, and wherein each valve is operable to selectively open and close to control fluid flow in the aspiration thrombectomy system;
one or more pressure sensors, wherein each pressure sensor is associated with the aspiration catheter or the connection tubing; and
an automated controller configured to:
operate one or more of the valves in a respective first operational state of the plurality of operational states to generate one or more changes in one or more pressure levels of fluid in the aspiration catheter or the connection tubing;
detect, via one or more of the pressure sensors, one or more pressure levels, wherein changes in the detected pressure levels are correlated with the one or more generated changes in pressure levels;
determine one or more system states in the aspiration catheter or the connection tubing based on one or more system state scores, wherein at least one system state score is determined based on the detected pressure levels and is indicative of a measure of occlusion in the aspiration catheter or the connection tubing; and
operate, based on the determined system states, one or more of the valves in a respective second operational state of the plurality of operational states.