公开(公告)号：US20240164800A1

公开(公告)日：2024-05-23

申请号：US18365127

申请日：2023-08-03

Applicant: Penumbra, Inc.

Inventor： Cheng Yong Timothy Thio ,  Lincoln Herbert Davidson ,  Scott Teigen ,  Corey Teigen

IPC: A61B17/22 ,  A61M1/00

CPC classification number: A61B17/22 ,  A61M1/77 ,  A61B2017/00292 ,  A61B2017/22079 ,  A61M2205/3331

Abstract: An aspiration thrombectomy system for use with a vacuum source and an aspiration catheter includes an aspiration catheter, connection tubing configured to act as a common conduit for fluid communication between the aspiration catheter and a vacuum source, controllable valves operable to selectively open and close to control fluid flow, pressure sensors associated with the aspiration catheter or the connection tubing, and an automatic controller configured to operate the valves in a first operational state to generate fluid pressure changes, detect pressure levels in the system, wherein changes in the detected pressure levels are correlated with the generated fluid pressure changes, determine system states based on system state scores determined based on the detected pressure levels, the system state scores indicating a measure of occlusion in the aspiration catheter or the connection tubing, and operate the valves in a second operational state based on the determined system states.

公开(公告)号：US12232751B2

公开(公告)日：2025-02-25

申请号：US18365127

申请日：2023-08-03

Applicant: Penumbra, Inc.

Inventor： Cheng Yong Timothy Thio ,  Lincoln Herbert Davidson ,  Scott Teigen ,  Corey Teigen

IPC: A61B17/22 ,  A61B17/00 ,  A61M1/00

Abstract: An aspiration thrombectomy system for use with a vacuum source and an aspiration catheter includes an aspiration catheter, connection tubing configured to act as a common conduit for fluid communication between the aspiration catheter and a vacuum source, controllable valves operable to selectively open and close to control fluid flow, pressure sensors associated with the aspiration catheter or the connection tubing, and an automatic controller configured to operate the valves in a first operational state to generate fluid pressure changes, detect pressure levels in the system, wherein changes in the detected pressure levels are correlated with the generated fluid pressure changes, determine system states based on system state scores determined based on the detected pressure levels, the system state scores indicating a measure of occlusion in the aspiration catheter or the connection tubing, and operate the valves in a second operational state based on the determined system states.

公开(公告)号：US11730499B1

公开(公告)日：2023-08-22

申请号：US17991536

申请日：2022-11-21

Applicant: Penumbra, Inc.

Inventor： Cheng Yong Timothy Thio ,  Lincoln Herbert Davidson ,  Scott Teigen ,  Corey Teigen

IPC: A61B17/22 ,  A61M1/00 ,  A61B17/00

CPC classification number: A61B17/22 ,  A61M1/77 ,  A61B2017/00292 ,  A61B2017/22079 ,  A61M2205/3331

Abstract: An aspiration thrombectomy system for use with a vacuum source and an aspiration catheter includes a connection tubing configured to selectively connect the aspiration catheter to the vacuum source via a controllable vacuum valve. A distal pressures sensor is configured to detect pressure at the distal end within the connection tubing. An automatic controller may operate the vacuum valve to generate fluid pressure change in the connection tubing, and detect pressure profiles in the connection tubing correlated with the generated pressure changes via the distal pressure sensor. The automatic controller may determine one or more system states in the aspiration catheter or connection tubing based on the detected pressure profiles, and may operate the vacuum valve based on the determination of system state.