# US 2022/0031931 A1 · Pressure Switch for Aspiration Systems and Devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0031931 A1 - Document ID: US20220031931A1 - Status: Published application - Kind: A1 - Application number: 17/393,098 - Filed: 2021-08-03 - Published: 2022-02-03 - Earliest claimed: 2020-08-03 - Assignees: Stout Scientific, LLC - Applicants: Stout Scientific, LLC - Inventors: Charles Emmett Stout - Web page: https://patentgrep.com/patent/US20220031931A1 ## CPC - A61M 1/75: {Intermittent or pulsating suction (A61M1/63, A61M1/772 take precedence)} - 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 - A61M 1/743: {by changing the cross-section of the line, e.g. flow regulating valves (A61M1/7413 takes precedence)} - A61M 1/76: {Handpieces (specially for suction-irrigation A61M1/774, aspiration tips A61M1/84)} - A61B 2017/00146: {with multiple frequencies} - A61B 2017/22079: {with suction of debris} - A61B 2217/005: with suction drainage system - A61M 2210/0693: Brain, cerebrum - 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)} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract Pressure regulations allow for example, tension control on spring valves to regulate cycling behavior for aspiration catheter systems. Unique brain access and procedures are driven by the improved cycling patterns and managed periodic frequencies. ## Claims ### Claim 1 An improved pressure switch for cycling pressure between atmospheric and pump pressures which generates and communicates a novel cycle pattern. ### Claim 2 (depends on 1) The improved pressure switch of claim 1, whereby a curve which defines the cycle pattern shows that induced variations of cyclic pressure generate alternate periodic frequencies, for example, fixed or unfixed sinusoidal patterns. ### Claim 3 (depends on 2) The improved pressure switch of claim 2, effective for use in neurovascular and interventional procedures with currently existing medical devices. ### Claim 4 (depends on 3) The improved pressure switch of claim 3, effective for use with newly developed or later developed medical devices. ### Claim 5 A medical device system for cycling pressure between pump pressure and atmospheric pressure comprising, in combination: at least an aspiration pump, suction tubing connecting the at least a pump to a device; and an associated aspiration catheter, whereby a novel cycle pattern is generated. ### Claim 6 (depends on 5) The medical device system of claim 5, defined by the curve in FIG. 2. ### Claim 7 (depends on 6) The medical device system of claim 6, whereby a spring-loaded mechanism is effective to actuate a release valve as mechanical means to regulate pressure. ### Claim 8 (depends on 7) The medical device system of claim 7, further comprising tension control on the spring valve. ### Claim 9 (depends on 8) The medical device system of claim 8, wherein cycling behavior is regulated. ### Claim 10 (depends on 9) The medical system of claim 9, forming a kit for using any medical device along with the pump and tubing and aspiration catheter. ### Claim 11 (depends on 10) The medical device system of claim 10, wherein the aspiration catheter is designed for neurovascular use. ### Claim 12 (depends on 10) The medical device system of claim 10, wherein the aspiration catheter is designed for peripheral vascular use. ### Claim 13 (depends on 10) The medical device system of claim 10, using an aspiration catheter or modified device for cardiovascular applications. ### Claim 14 An advanced pressure switching mechanism for managing periodic frequency of pressure used during interventional and neurovascular procedures. ### Claim 15 (depends on 14) The advanced pressure switching mechanism as defined by claim 14 and FIG. 2, herein, which is expressly incorporated by reference herein. ### Claim 16 (depends on 15) The advanced pressure switching mechanism of claim 15, further comprising a pump, specialized tubing and an aspirating catheter according unique specification for neuromuscular usage. ### Claim 17 (depends on 16) The advanced pressure switching mechanism of claim 16, whereby tension control on spring valves is used to manage cycling behavior for specialized aspiration catheters. ### Claim 18 (depends on 17) The advanced pressure switching mechanism of claim 17, whereby tension control on spring valves is used to managed cycling behavior for generally available aspiration catheters. ### Claim 19 (depends on 18) The advanced pressure switching mechanism of claim 18, whereby catheters and catheter systems may access and aspirate previously challenged vessels and locations in the brain. ### Claim 20 (depends on 19) The advanced pressure switching mechanism of claim 19, useful to access the cerebral septum, among other situses.