# US 11,992,652 B2 · Self-powered syringe drivers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,992,652 B2 - Document ID: US11992652B2 - Status: Granted - Kind: B2 - Application number: 16/933,850 - Filed: 2020-07-20 - Published: 2021-01-07 - Granted: 2024-05-28 - Earliest claimed: 2016-04-29 - Assignees: Altaviz, LLC - Applicants: Altaviz, LLC - Inventors: Jack R. Auld; Matthew Flowers; Matthew McCawley; John C. Huculak; Andrew Schieber; James Lescoulie - Web page: https://patentgrep.com/patent/US11992652B2 ## CPC - A61M 5/1456: {with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir} - A61M 5/1454: {spring-actuated, e.g. by a clockwork} - A61M 5/2053: {Media being expelled from injector by pressurised fluid or vacuum (for infusion A61M5/145, A61M5/155)} - A61M 5/14526: {the piston being actuated by fluid pressure} - A61M 5/24: Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or cartridges, e.g. automatic - A61M 5/482: {Varying injection pressure, e.g. by varying speed of injection} - A61M 5/484: {Regulating injection pressure} - A61M 5/488: {Limiting injection pressure} - A61M 2005/14506: {mechanically driven, e.g. spring or clockwork} - A61M 2005/14513: {with secondary fluid driving or regulating the infusion} - A61M 2205/128: with incorporated valves - A61M 2207/00: Methods of manufacture, assembly or production - 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 Devices and methods are provided for delivering fluid into a patient's body. In an exemplary embodiment, the device may include a syringe cartridge and a syringe driver that may be coupled to the cartridge. The cartridge may include a housing including a proximal end, a distal end, and defining an interior, the cartridge further including a piston slidably disposed within the interior for delivering fluid within the interior through a port in the distal end. The driver may include a plunger for advancing the piston within the interior of the housing, a source of pressurized fluid, a valve, and an actuator member coupled to the valve for selectively opening a flow path from the source to the plunger to control flow of the pressurized fluid to advance the plunger to deliver fluid from the interior of the housing at a desired rate. ## Claims ### Claim 1 A device for delivering a medicament into a patient's body, comprising: a syringe cartridge comprising a housing including a proximal end, a distal end, and defining an interior, the cartridge further comprising a piston slidably disposed within the interior for delivering a medicament within the interior through a port in the distal end; and a syringe driver comprising a plunger for advancing the piston within the interior of the housing, a source of pressurized fluid, a valve, and an actuator member coupled to the valve for selectively opening a flow path from the source to the plunger to control flow of the pressurized fluid to advance the plunger to deliver medicament from the interior of the housing at a desired flow rate during an initial stage of activation comprising delivery of the medicament, wherein the source of pressurized fluid comprises a canister of compressible gas, and wherein the valve comprises a pin received within a recess communicating with the flow path, the pin and recess configured to limit flow of the fluid along the flow path during a final stage of activation after the initial stage of activation to limit advancement of the plunger while the actuator member remains activated such that the flow path from the source to the plunger remains open, thereby limiting flow of the medicament to a maximum flow rate during the final stage. ### Claim 2 (depends on 1) The device of claim 1, wherein the source of pressurized fluid further comprises a chamber containing incompressible fluid and a piston disposed between the chamber and the canister of pressurized gas to apply a predetermined pressure to the incompressible fluid within chamber when the pressurized gas is released from the canister. ### Claim 3 (depends on 2) The device of claim 2, wherein the incompressible fluid is a viscous fluid. ### Claim 4 (depends on 1) The device of claim 1, further comprising one or more connectors for coupling the syringe driver to the proximal end of the syringe cartridge. ### Claim 5 (depends on 4) The device of claim 4, wherein the one or more connectors comprise one or more flanges on the proximal end of the housing and a latch or bracket on the syringe driver for receiving the one or more flanges. ### Claim 6 (depends on 4) The device of claim 4, wherein the one or more connectors comprise a receiver on the syringe driver for receiving the proximal end of the syringe cartridge. ### Claim 7 (depends on 4) The device of claim 4, wherein the one or more connectors removably couple the syringe driver to the syringe cartridge. ### Claim 8 (depends on 4) The device of claim 4, wherein the one or more connectors permanently couple the syringe driver to the syringe cartridge. ### Claim 9 (depends on 1) The device of claim 1, further comprising a repeating stroke limiter that limits a number of doses of the medicament that may be delivered from the syringe cartridge. ### Claim 10 (depends on 9) The device of claim 9, wherein the repeating stroke limiter comprises an adjustment mechanism that is adjustable by a user to set the number of doses. ### Claim 11 (depends on 1) The device of claim 1, further comprising a volumetric stroke limiter that limits a distance the delivery piston can travel when the actuator member is activated to limit a volume of the medicament that may be delivered from the syringe cartridge. ### Claim 12 (depends on 11) The device of claim 11, wherein the volumetric stroke limiter comprises an adjustment mechanism that is adjustable by a user to set the volume of the medicament delivered when the actuator member is activated. ### Claim 13 (depends on 1) The device of claim 1, wherein the source of pressurized fluid further comprises a substantially incompressible liquid. ### Claim 14 (depends on 1) The device of claim 1, wherein the valve is configured to control flow along the flow path to provide proportional control of a speed at which the plunger advances and the corresponding flow rate of the medicament. ### Claim 15 (depends on 1) The device of claim 1, wherein the actuator member and valve provide a flow controller that provides an output to the plunger such that the flow rate of the fluid is one of linear, exponential, and polynomial relative to the pressure applied by the pressurized gas. ### Claim 16 (depends on 1) The device of claim 1, wherein the pin and recess are further configured to provide proportional control during initial activation of the actuator member. ### Claim 17 A device for delivering a medicament into a patient's body, comprising: a syringe cartridge comprising a housing including a proximal end, a distal end, and defining an interior, the cartridge further comprising a piston slidably disposed within the interior for delivering a medicament within the interior through a port in the distal end; and a syringe driver comprising a plunger for advancing the piston within the interior of the housing, a source of pressurized fluid, a valve, and an actuator member coupled to the valve for selectively opening a flow path from the source to the plunger to control flow of the pressurized fluid to advance the plunger to deliver medicament from the interior of the housing at a desired rate during an initial stage of activation comprising delivery of the medicament, the valve configured to limit flow of the fluid along the flow path during a final stage of activation after the initial stage of activation to limit advancement of the plunger while the actuator member remains activated such that the flow path from the source to the plunger remains open, thereby limiting flow of the medicament to a maximum flow rate during the final stage of activation. ### Claim 18 (depends on 17) The device of claim 17, wherein the valve comprises a pin received within a recess communicating with the flow path, the pin and recess configured to limit the flow of the fluid to the maximum flow rate after the actuator member is activated beyond a predetermined position, thereby limiting flow of the medicament to the maximum flow rate during the final stage. ### Claim 19 (depends on 18) The device of claim 18, wherein the maximum flow rate is greater than no flow rate. ### Claim 20 (depends on 1) The device of claim 1, wherein the maximum flow rate is greater than no flow rate.