# US 10,946,146 B2 · Syringe driving apparatus and system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,946,146 B2 - Document ID: US10946146B2 - Status: Granted - Kind: B2 - Application number: 15/848,528 - Filed: 2017-12-20 - Published: 2018-06-28 - Granted: 2021-03-16 - Earliest claimed: 2016-12-22 - Assignees: Epic Medical Pte. Ltd. - Applicants: Epic Medical Pte Ltd - Inventors: Freddie Eng Hwee Lee - Web page: https://patentgrep.com/patent/US10946146B2 ## CPC - A61M 5/31571: {Means preventing accidental administration (for automatic syringes A61M5/20)} - A61M 5/1454: {spring-actuated, e.g. by a clockwork} - A61M 5/2033: {Spring-loaded one-shot injectors with or without automatic needle insertion (multishot dosing syringes A61M5/31525, needle insertion only A61M5/3287)} - A61M 39/28: Clamping means for squeezing flexible tubes, e.g. roller clamps {(tube strippers A61M1/83)} - A61M 2005/2073: {preventing premature release, e.g. by making use of a safety lock} - A61M 2205/0216: Materials providing elastic properties, e.g. for facilitating deformation and avoid breaking - 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 A syringe driving apparatus includes a housing, a driving member disposed in the housing and a resilient member connected to the housing and the driving member. The housing having a front end, a back end and a compartment between the front end and the back end, the compartment is configured to receive a plunger of the syringe therein. The driving member is movable relative to the housing between the front end and the back end. Movement of the driving member towards the back end deforms the resilient member to store potential energy in the resilient member, and upon release of the potential energy, the resilient member moves the driving member towards the front end to press the plunger to expel medicine out of the syringe. ## Claims ### Claim 1 A syringe driving apparatus comprising: a housing to which a syringe is attachable, the housing having a front end, a back end and a compartment between the front end and the back end, the compartment is configured to receive a plunger of the syringe therein; a driving member disposed in the compartment, the driving member being movable relative to the housing between the front end and the back end; a resilient member connected to the housing and the driving member, wherein movement of the driving member towards the back end deforms the resilient member to store potential energy in the resilient member, upon release of the potential energy, the resilient member moves the driving member towards the front end to press the plunger to expel medicine out of the syringe, and wherein the driving member includes a casing and a slider rotatably coupled to the casing, the casing being rotatably and slidably coupled to the housing, the slider being slidably coupled to the housing, wherein the resilient member is a spiral spring having an inner end connected to the slider and an outer end connected to the casing, wherein movement of the slider along an axial direction of the housing towards the back end causes the casing to rotate to wind the spiral spring to store potential energy in the spiral spring, and upon release of the potential energy, the spiral spring unwinds to move the casing along an axial direction towards the front end to press the plunger. ### Claim 2 (depends on 1) The syringe driving apparatus of claim 1, further comprising a locking member connected to the driving member and engageable to the housing to secure the driving member at the back end of the housing. ### Claim 3 (depends on 2) The syringe driving apparatus of claim 2, wherein the locking member is separable from the driving member to release the driving member from the housing. ### Claim 4 (depends on 3) The syringe driving apparatus of claim 3, further comprising a neck portion between the locking member and the driving member, wherein the locking member is separable from the driving member at the neck portion. ### Claim 5 (depends on 1) The syringe driving apparatus of claim 1, wherein the resilient member is an elastic band having a first portion affixed to the housing and a second portion abutting against the driving member, wherein movement of the driving member towards the back end stretches the elastic band to store potential energy in the elastic band, and upon release of the potential energy, the elastic band shrinks to move the driving member towards the front end to press the plunger to expel medicine out of the syringe. ### Claim 6 (depends on 1) The syringe driving apparatus of claim 1, further comprising a seat member movably coupled to the casing to receive the plunger. ### Claim 7 (depends on 6) The syringe driving apparatus of claim 6, wherein the casing having ridges formed on an outer surface thereof, the housing having helical grooves formed on an inner surface thereof, wherein the casing is rotatably and slidably coupled to the casing via an engagement of the ridges and the helical grooves. ### Claim 8 (depends on 7) The syringe driving apparatus of claim 7, wherein the spiral spring winds and unwinds with respect to a spring axis parallel to the axial direction, and wherein the spiral spring unwinds to generate a first force exerting against the casing along a peripheral direction, and the first force is converted into a second force. ### Claim 9 (depends on 1) The syringe driving apparatus of claim 1, further comprising a locking member connected to the slider and a knob coupled to the housing to engage the locking member to secure the driving member at the back end of the housing. ### Claim 10 (depends on 9) The syringe driving apparatus of claim 9, wherein the knob is rotatable relative to the housing to break the locking member from the slider to release the potential energy. ### Claim 11 An apparatus comprising: a housing having a front end and a back end; a driving member disposed in the housing, the driving member being movable relative to the housing between the front end and the back end; a resilient member connected between the housing and the driving member, a locking member coupled to the housing to fix the driving member at the back end; wherein movement of the driving member towards the back end deforms the resilient member to store potential energy in the resilient member, wherein disengagement of the locking member from the housing releases the potential energy to cause the driving member to move towards the front end, and wherein the driving member includes a casing and a slider rotatably coupled to the casing, the casing being rotatably and slidably coupled to the housing, the slider being slidably coupled to the housing, wherein the resilient member is a spiral spring having an inner end connected to the slider and an outer end connected to the casing, wherein movement of the slider along an axial direction of the housing towards the back end causes the casing to rotate to wind the spiral spring to store potential energy in the spiral spring, and upon release of the potential energy, the spiral spring unwinds to move the casing along an axial direction towards the front end to press the plunger. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein the locking member is connected to the driving member during the movement of driving member towards the back end, and separated from the driving member to allow the driving member to move towards the first end. ### Claim 13 (depends on 11) The apparatus of claim 11, wherein the resilient member is an elastic band having a first portion affixed to the housing and a second portion abutting against the driving member, wherein movement of the driving member towards the back end stretches the elastic band to store potential energy in the elastic band, and upon release of the potential energy, the elastic band shrinks to move the driving member towards the front end to press the plunger to expel medicine out of the syringe. ### Claim 14 (depends on 11) The apparatus of claim 11, further comprising a seat member movably coupled to the casing to receive the plunger. ### Claim 15 (depends on 14) The apparatus of claim 14, wherein the casing having ridges formed on an outer surface thereof, the housing having helical grooves formed on an inner surface thereof, wherein the casing is rotatably and slidably coupled to the casing via an engagement of the ridges and the helical grooves. ### Claim 16 (depends on 15) The apparatus of claim 15, wherein the spiral spring winds and unwinds with respect to a spring axis parallel to the axial direction, and wherein the spiral spring unwinds to generate a first force exerting against the casing along a peripheral direction, and the first force is converted into a second force. ### Claim 17 (depends on 11) The apparatus of claim 11, further comprising a knob coupled to the housing to engage the locking member to secure the driving member at the back end of the housing. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein the knob is rotatable relative to the housing to break the locking member from the slider to release the potential energy.