# US 2019/0167911 A1 · Quick-connect syringe and needle system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0167911 A1 - Document ID: US20190167911A1 - Status: Published application - Kind: A1 - Application number: 16/208,147 - Filed: 2018-12-03 - Published: 2019-06-06 - Earliest claimed: 2017-12-04 - Inventors: Arash Anthony Rassouli - Web page: https://patentgrep.com/patent/US20190167911A1 ## CPC - A61M 5/343: {Connection of needle cannula to needle hub, or directly to syringe nozzle without a needle hub (A61M5/322 takes precedence)} - A61M 5/3134: {characterised by constructional features of the distal end, i.e. end closest to the tip of the needle cannula} - A61M 5/3293: {characterised by features of the needle hub} - A61M 5/345: {Adaptors positioned between needle hub and syringe nozzle} - A61M 5/347: {rotatable, e.g. bayonet or screw (A61M5/344 takes precedence)} - A61M 5/348: {snap lock, i.e. upon axial displacement of needle assembly (A61M5/344 takes precedence)} - A61M 2039/1027: {Quick-acting type connectors} - 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 quick-connect syringe and needle system is provided including a syringe having a threaded portion, a needle assembly having a needle body and a needle affixed to the needle body and an intermediate adapter engageable with the syringe and releasably engageable with the needle body. A quick-connect mechanism is provided on the needle body and intermediate adapter for quickly and easily connecting the needle assembly with the syringe and intermediate adapter. The quick-connect mechanism can include a pair of diametrically opposed L-shaped slots formed in a rear portion of the needle body and a pair of corresponding and diametrically opposed projections extending from a front or locking portion of the intermediate adapter. The needle assembly is attached to the intermediate adapter by inserting the projections into the slots and giving the assembly a quick quarter turn to firmly seat the projections within the slots. ## Claims ### Claim 1 A quick-connect syringe and needle system, comprising: a syringe; a needle assembly including a needle assembly body and a needle affixed to the needle assembly body, the needle assembly body including a rear portion defining at least one slot; and an intermediate adapter, engageable with the syringe to secure the intermediate adapter to the syringe, the intermediate adapter comprising at least one projection releasably engageable with the at least one slot in the rear portion of the needle assembly body to disconnectably secure the intermediate adapter to the needle assembly; wherein the quick-connect and needle system is configured to adopt an assembled configuration in which the intermediate adapter is secured to the syringe, and further in which the intermediate adapter is disconnectably secured to the needle assembly by engagement of the at least one projection of the intermediate adapter with the at least one slot of the rear portion of the needle assembly body of the needle assembly. ### Claim 2 (depends on 1) The quick-connect syringe and needle system of claim 1, wherein the rear portion of the needle assembly body comprises a slotted sleeve which fits over a front portion of the intermediate adapter when the quick-connect and needle system is arranged in the assembled configuration. ### Claim 3 (depends on 2) The quick-connect syringe and needle system of claim 2, wherein the at least one slot is defined through the slotted sleeve. ### Claim 4 (depends on 3) The quick-connect syringe and needle system of claim 3, wherein the at least one slot is L-shaped. ### Claim 5 (depends on 4) The quick-connect syringe and needle system of claim 4, wherein the L-shaped slot comprises a first slot segment having an open end, and a second slot segment extending from the first slot segment and including a closed end. ### Claim 6 (depends on 5) The quick-connect syringe and needle system of claim 5, wherein the first slot segment of the L-shaped slot is parallel to a longitudinal axis of the needle assembly. ### Claim 7 (depends on 5) The quick-connect syringe and needle system of claim 5, wherein the second slot segment of the L-shaped is circumferential about the longitudinal axis. ### Claim 8 (depends on 1) The quick-connect syringe and needle system of claim 1, wherein the at least one projection of the intermediate adapter comprises two projections and the at least one slot defined in the rear portion of the needle assembly body comprises two slots, and further wherein the two projections are configured to engage with the two slots. ### Claim 9 (depends on 8) The quick-connect syringe and needle system of claim 8, wherein the two projections are diametrically opposed to each other, and the two slots are diametrically opposed to one another. ### Claim 10 (depends on 1) The quick-connect syringe and needle system of claim 1, wherein the intermediate adapter is disconnectably engageable with the syringe. ### Claim 11 (depends on 10) The quick-connect syringe and needle system of claim 10, wherein the intermediate adapter comprises a threaded portion disconnectably threadable to a forward threaded portion of the syringe. ### Claim 12 (depends on 1) The quick-connect syringe and needle system of claim 1, wherein the intermediate adapter comprises a through bore, and further wherein, when the quick-connect and needle system is arranged in the assembled configuration, the needle of the needle assembly extends through the through bore of the intermediate adapter and into the syringe. ### Claim 13 (depends on 1) The quick-connect syringe and needle system of claim 1, wherein the intermediate adapter comprises a radially-protruding collar configured to rest on a front face of the syringe. ### Claim 14 (depends on 1) The quick-connect syringe and needle system of claim 1, wherein the intermediate adapter comprises an outer wall disposed circumferentially about a longitudinal axis of the intermediate adapter, the outer wall comprising an outer texture facilitating manual application of a torque on the outer wall and needle assembly to rotate the needle assembly and intermediate adapter relative to one another for engaging the at least one projection of the intermediate adapter with the at least one slot of the rear portion of the needle assembly body of the needle assembly. ### Claim 15 (depends on 14) The quick-connect syringe and needle system of claim 14, wherein, when the quick-connect and needle system is arranged in the assembled configuration, the outer wall of the intermediate adapter is disposed radially outward of the rear portion of the needle assembly body. ### Claim 16 A quick-connect syringe and needle system, comprising: a syringe; a needle assembly including a needle assembly body and a needle affixed to the needle assembly body, the needle assembly body including a rear portion defining at least one slot; and an intermediate adapter, disconnectably threadable to a forward threaded portion of the syringe to secure the intermediate adapter to the syringe, the intermediate adapter comprising at least one projection releasably engageable with the at least one slot in the rear portion of the needle assembly body to disconnectably secure the intermediate adapter to the needle assembly; wherein the quick-connect and needle system is configured to adopt an assembled configuration in which the intermediate adapter is secured to the syringe by a threading of the intermediate adapter to the forward threaded portion of the syringe, and further in which the intermediate adapter is disconnectably secured to the needle assembly by engagement of the at least one projection of the intermediate adapter with the at least one slot of the rear portion of the needle assembly body of the needle assembly. ### Claim 17 (depends on 16) The quick-connect syringe and needle system of claim 16, wherein the at least one projection of the front portion of the intermediate adapter comprises two projections and the at least one slot defined in the rear portion of the needle assembly body comprises two slots, and further wherein the two projections are configured to engage with the two slots. ### Claim 18 (depends on 16) The quick-connect syringe and needle system of claim 16, wherein the intermediate adapter comprises a through bore, and further wherein, when the quick-connect and needle system is arranged in the assembled configuration, the needle assembly body of the needle assembly extends through the through bore of the intermediate adapter and into the syringe. ### Claim 19 (depends on 16) The quick-connect syringe and needle system of claim 16, wherein the intermediate adapter comprises a radially-protruding collar formed between the front portion and the rear portion and configured to rest on a front face of the syringe. ### Claim 20 A quick-connect syringe and needle system, comprising: a syringe; a needle assembly including a needle assembly body and a needle affixed to the needle assembly body, the needle assembly body including a rear portion defining at least one slot; and an intermediate adapter, disconnectably threadable to a forward threaded portion of the syringe to secure the intermediate adapter to the syringe, the intermediate adapter comprising at least one projection releasably engageable with the at least one slot in the rear portion of the needle assembly body to disconnectably secure the intermediate adapter to the needle assembly, the intermediate adapter further comprising a through bore; wherein the quick-connect and needle system is configured to adopt an assembled configuration in which the intermediate adapter is secured to the syringe by a threading of the intermediate adapter to the forward threaded portion of the syringe, and further in which the intermediate adapter is disconnectably secured to the needle assembly by engagement of the at least one projection of the intermediate adapter with the at least one slot of the rear portion of the needle assembly body of the needle assembly, with the needle assembly body of the needle assembly extending through the through bore of the intermediate adapter and into the syringe.