# US 2024/0197342 A1 · Aspiration catheter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0197342 A1 - Document ID: US20240197342A1 - Status: Published application - Kind: A1 - Application number: 18/590,717 - Filed: 2024-02-28 - Published: 2024-06-20 - Earliest claimed: 2021-04-07 - Assignees: Expanse Technology Partners, LLC - Applicants: Expanse Technology Partners, LLC - Inventors: Eitan Konstantino; Matthew Drummond Ritch; Stephanie Morgan Boula; Tanhum Feld - Web page: https://patentgrep.com/patent/US20240197342A1 ## CPC - A61B 17/22: Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for - A61B 2017/00292: {mounted on or guided by flexible, e.g. catheter-like, means} - A61B 2017/22079: {with suction of debris} - A61B 2217/005: with suction drainage system - A61B 2217/007: with irrigation system - A61M 2025/0681: {Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube} - A61M 2039/2433: {Valve comprising a resilient or deformable element, e.g. flap valve, deformable disc} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract Systems and methods for performing aspiration thrombectomy. The aspiration catheter assembly can include a support catheter and an aspiration catheter extending through the support catheter. The catheter assembly can include a distal valve apparatus that can control a level of vacuum at a distal end of the catheter system. Irrigation can flow between the support catheter and the aspiration catheter to flush the catheter assembly. ## Claims ### Claim 1 An aspiration catheter assembly for removing a clot, the aspiration catheter assembly comprising: a support catheter comprising an elongate tubular body and a valve for controlling a level of vacuum at a distal end of the aspiration catheter assembly; an aspiration catheter disposed within the support catheter and capable of moving relative to the support catheter, the aspiration catheter comprising an aspiration lumen for receiving at least a portion of the clot; and a stopper configured to prevent the aspiration catheter from moving beyond a preset distance from the distal end of the support catheter. ### Claim 2 (depends on 1) The aspiration catheter assembly of claim 1, wherein the valve prevents irrigation flow out of the support catheter. ### Claim 3 (depends on 1) The aspiration catheter assembly of claim 1, wherein the valve opens when the aspiration catheter is advanced through the valve, and wherein the valve closes when the aspiration catheter is retracted proximal of the valve. ### Claim 4 (depends on 1) The aspiration catheter assembly of claim 1, wherein the support catheter comprises a valve housing secured to a distal end of the elongate tubular body, the valve housing comprising the valve. ### Claim 5 (depends on 1) The aspiration catheter assembly of claim 1, further comprising: a motor operably connected to the aspiration catheter; and a controller configured to cause the motor to advance and retract the aspiration catheter relative to the valve of the support catheter. ### Claim 6 (depends on 1) The aspiration catheter assembly of claim 1, further comprising a space between the aspiration catheter and the support catheter for irrigation fluid. ### Claim 7 (depends on 1) The aspiration catheter of claim 1, wherein the stopper is configured to prevent the aspiration catheter from moving more than a preset distance of up to 5 centimeters beyond a distal end of the support catheter. ### Claim 8 An aspiration catheter assembly for removing a clot, the aspiration catheter assembly comprising: a support catheter configured to be in fluid connection with an irrigation source; an aspiration catheter configured to be in fluid connection with a vacuum source, the aspiration catheter disposed within the support catheter and capable of moving relative to the support catheter, the aspiration catheter comprising an aspiration lumen for receiving at least a portion of the clot; and a valve for controlling a level of vacuum at a distal end of the aspiration catheter assembly and preventing irrigation flow out of the distal end of the aspiration catheter assembly; wherein the aspiration catheter is configured to move between an extended position when a distal end of the aspiration catheter is advanced distal of the valve and a retracted position when the distal end of the aspiration catheter is retracted proximal of the valve; wherein in the retracted position, fluid from the irrigation source is allowed to flow through a space between the support catheter and the aspiration catheter, into the distal end of the aspiration catheter, and proximally out of the aspiration catheter; and wherein in both the retracted position and in the extended position, fluid from the irrigation source does not flow out of the distal end of the support catheter. ### Claim 9 (depends on 7) The aspiration catheter assembly of claim 7, wherein the valve is at a distal end of the support catheter. ### Claim 10 (depends on 7) The aspiration catheter assembly of claim 7, wherein the support catheter comprises a valve housing at a distal end of the support catheter, the valve housing comprising the valve. ### Claim 11 (depends on 7) The aspiration catheter assembly of claim 7, further comprising: a motor operably connected to the aspiration catheter; and a controller configured to cause the motor to advance and retract the aspiration catheter relative to the valve. ### Claim 12 (depends on 7) The aspiration catheter assembly of claim 7, further comprising a space between the aspiration catheter and the support catheter for irrigation flow. ### Claim 13 (depends on 7) The aspiration catheter of claim 7, further comprising a manifold at a proximal end of the support catheter, the manifold comprising an inlet for fluid connection with a irrigation source and a passage through which the aspiration catheter extends for fluid connection with a vacuum source. ### Claim 14 (depends on 13) The aspiration catheter of claim 13, further comprising a seal member disposed within the passage to prevent irrigation flow from flowing out of a space within the passage and outside of the aspiration catheter.