# US 12,184,218 B2 · System, apparatus, and method for a pump motor failsafe > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,184,218 B2 - Document ID: US12184218B2 - Status: Granted - Kind: B2 - Application number: 17/522,854 - Filed: 2021-11-09 - Published: 2022-05-12 - Granted: 2024-12-31 - Earliest claimed: 2020-11-09 - Assignees: HydroCision, Inc. - Applicants: Hydrocision, Inc. - Inventors: Mark Lewis; David E. Cassidy - Web page: https://patentgrep.com/patent/US12184218B2 ## CPC - H02P 6/12: Monitoring commutation; Providing indication of commutation failure - A61M 1/72: {Cassettes forming partially or totally the fluid circuit} - A61M 3/0201: {Cassettes therefor} - A61M 3/0258: {by means of electric pumps} - H02P 6/08: Arrangements for controlling the speed or torque of a single motor (H02P6/10, H02P6/28 take precedence) - H02P 29/10: for preventing overspeed or under speed - H02P 29/60: Controlling or determining the temperature of the motor or of the drive (H02P29/02 takes precedence) - A61M 1/80: {Suction pumps (A61M1/64, A61M1/71, A61M60/00 take precedence)} - A61M 2205/121: interface between cassette and base - A61M 2205/14: Detection of the presence or absence of a tube, a connector or a container in an apparatus - A61M 2205/3306: Optical measuring means - A61M 2205/3553: remote, e.g. between patient's home and doctor's office - A61M 2205/3584: using modem, internet or Bluetooth® - A61M 2205/6018: providing set-up signals for the apparatus configuration - A61M 2205/6054: Magnetic identification systems - H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS - 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 Provided for may be a pump failsafe apparatus for use with a pump motor, the pump failsafe apparatus comprising a foot pedal configured to generate a first signal when depressed and a second signal when released. The apparatus may comprise a power supply having an internal logic controlled power switch, the power supply in electrical communication with at least the pump motor, wherein the internal logic controlled power switch includes an active state (ON) and an inactive state (OFF). The apparatus may further include an overspeed detector, an under voltage detector in electrical communication with at least the power supply, the under voltage detector configured to measure a logic voltage, and a pump cartridge detector. ## Claims ### Claim 1 A pump failsafe apparatus for use with a pump motor, the pump failsafe apparatus comprising: a pump cartridge configured to connect to the pump motor; a foot pedal configured to generate a first signal when depressed by a user, the foot pedal further configured to generate a second signal when released by the user; a power supply comprising an internal logic controlled power switch, the power supply in electrical communication with at least the pump motor, wherein the internal logic controlled power switch includes an active state and an inactive state, and wherein the active state and the inactive state are switchable; an overspeed detector in electrical communication with at least the pump motor and a hall position sensor, the overspeed detector configured to generate a first overspeed signal, the overspeed detector further configured to generate a second overspeed signal; an under voltage detector in electrical communication with at least the power supply, the under voltage detector configured to measure a logic voltage, the under voltage detector further configured to generate an under voltage disable signal; and a pump cartridge detector in electrical communication with at least the pump cartridge, the pump cartridge detector configured to generate a positive pump cartridge signal, the pump cartridge detector further configured to generate a negative pump cartridge signal, wherein the pump cartridge detector is configured to determine whether the pump cartridge is in proper communication with the pump motor, where in a pump cartridge piston is forced into a known location by positioning a transmission at a top dead center position before fully inserting the pump cartridge, wherein the pump motor is turned to 60 thrusts per minute, enabling an index sensor to detect a position of the pump cartridge piston, and wherein, if a piston position is not fully compressed and a pump cartridge motion stops, a user interface generates a warning to the user until the pump cartridge piston is fully compressed. ### Claim 2 (depends on 1) The pump failsafe apparatus of claim 1, further comprising an over temperature switch in electrical communication with at least the overspeed detector, the over temperature switch configured to determine a motor temperature and instruct the pump failsafe apparatus to enter the inactive state if the motor temperature surpasses a predetermined motor temperature threshold. ### Claim 3 (depends on 2) The pump failsafe apparatus of claim 2, wherein the predetermined motor temperature threshold is 75 degrees Celsius. ### Claim 4 (depends on 2) The pump failsafe apparatus of claim 2, further comprising a thermistor configured to monitor the motor temperature. ### Claim 5 (depends on 1) The pump failsafe apparatus of claim 1, further comprising a handpiece sensor in electrical communication with at least the overspeed detector, the handpiece sensor configured to determine whether a handpiece is properly attached and, if the handpiece is not properly attached, to instruct the pump failsafe apparatus to enter the inactive state. ### Claim 6 (depends on 1) The pump failsafe apparatus of claim 1, wherein the first signal immediately disables the overspeed detector, and wherein the second signal, generated upon release of the foot pedal, includes a delay, enabling the pump motor to slow from a first speed to a second speed. ### Claim 7 (depends on 1) The pump failsafe apparatus of claim 1, wherein the pump cartridge detector is an optical sensor. ### Claim 8 (depends on 1) The pump failsafe apparatus of claim 1, wherein the pump motor is a brushless DC motor, and wherein the pump motor is in electrical communication with a motor driver, the motor driver configured to transfer power from the power supply to the pump motor. ### Claim 9 (depends on 8) The pump failsafe apparatus of claim 8, wherein the motor driver is further configured to convert a computer speed signal and signals from the hall position sensor into an AC voltage. ### Claim 10 A pump failsafe apparatus for use with a pump motor, the pump failsafe apparatus comprising: a pump cartridge configured to connect to the pump motor; a foot pedal configured to generate a first signal when depressed by a user, the foot pedal further configured to generate a second signal when released by the user; a power supply comprising an internal logic controlled power switch, the power supply in electrical communication with at least the pump motor, wherein the internal logic controlled power switch includes an active state and an inactive state, and wherein the active state and the inactive state are switchable; an overspeed detector in electrical communication with at least the pump motor and a hall position sensor, the overspeed detector configured to generate a first overspeed signal, the overspeed detector further configured to generate a second overspeed signal; an under voltage detector in electrical communication with at least the power supply, the under voltage detector configured to measure a logic voltage, the under voltage detector further configured to generate an under voltage disable signal; a pump cartridge detector in electrical communication with at least the pump cartridge, the pump cartridge detector configured to generate a positive pump cartridge signal, the pump cartridge detector further configured to generate a negative pump cartridge signal; and wherein the first signal immediately disables the overspeed detector, and wherein the second signal, generated upon release of the foot pedal, includes a delay, enabling the pump motor to slow from a first speed to a second speed. ### Claim 11 (depends on 10) The pump failsafe apparatus of claim 10, further comprising an over temperature switch in electrical communication with at least the overspeed detector, the over temperature switch configured to determine a motor temperature and instruct the pump failsafe apparatus to enter the inactive state if the motor temperature surpasses a predetermined motor temperature threshold. ### Claim 12 (depends on 11) The pump failsafe apparatus of claim 11, wherein the predetermined motor temperature threshold is 75 degrees Celsius. ### Claim 13 (depends on 11) The pump failsafe apparatus of claim 11, further comprising a thermistor configured to monitor the motor temperature. ### Claim 14 (depends on 10) The pump failsafe apparatus of claim 10, further comprising a handpiece sensor in electrical communication with at least the overspeed detector, the handpiece sensor configured to determine whether a handpiece is properly attached and, if the handpiece is not properly attached, to instruct the pump failsafe apparatus to enter the inactive state. ### Claim 15 (depends on 10) The pump failsafe apparatus of claim 10, wherein the pump cartridge detector is configured to determine whether the pump cartridge is in proper communication with the pump motor, wherein a pump cartridge piston is forced into a known location by positioning a transmission at a top dead center position before fully inserting the pump cartridge, wherein the pump motor is turned to 60 thrusts per minute, enabling an index sensor to detect a position of the pump cartridge piston, and wherein, if a piston position is not fully compressed and a pump cartridge motion stops, a user interface generates a warning to the user until the pump cartridge piston is fully compressed. ### Claim 16 (depends on 15) The pump failsafe apparatus of claim 15, wherein the pump cartridge detector is an optical sensor. ### Claim 17 (depends on 10) The pump failsafe apparatus of claim 10, wherein the pump motor is a brushless DC motor, and wherein the pump motor is in electrical communication with a motor driver, the motor driver configured to transfer power from the power supply to the pump motor. ### Claim 18 (depends on 17) The pump failsafe apparatus of claim 17, wherein the motor driver is further configured to convert a computer speed signal and signals from the hall position sensor into an AC voltage.