# US 9,517,463 B2 ยท Syringe having a mechanical coupling piece > Agents: this data is available as JSON from the patentgrep API and MCP server โ€” see https://patentgrep.com/llms.txt - Number: US 9,517,463 B2 - Document ID: US9517463B2 - Status: Granted - Kind: B2 - Application number: 14/897,792 - Filed: 2014-06-06 - Published: 2016-05-19 - Granted: 2016-12-13 - Earliest claimed: 2013-06-13 - Assignees: Hamilton Bonaduz AG - Applicants: Hamilton Bonaduz AG - Inventors: Klaus Leckebusch - Web page: https://patentgrep.com/patent/US9517463B2 ## CPC - B01L 3/0217: {of the plunger pump type} - B01L 3/022: {Capillary pipettes, i.e. having very small bore (B01L3/0224 - B01L3/0237 take precedence)} - 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)} - B01L 2200/025: Align devices or objects to ensure defined positions relative to each other - B01L 2200/026: Fluid interfacing between devices or objects, e.g. connectors, inlet details - B01L 2200/0689: Sealing - B01L 2300/0609: Holders integrated in container to position an object - B01L 2300/0672: Integrated piercing tool - B01L 2300/12: Specific details about materials - B01L 2400/0478: pistons - B01L: CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE - 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 The invention relates to a syringe, comprising: a syringe body (12) having an axial inner cavity (16), which extends in the direction of a longitudinal axis (LA) of the syringe body (12) and in which a plunger (14) can be or is accommodated in such a way that the plunger can be moved in the longitudinal direction, and a needle (18), which can be or is connected to the syringe body (12) at a longitudinal end of the syringe body (12), wherein the syringe body (12) has a coupling segment (20) at the needle-side longitudinal end of the syringe body (12), to which coupling segment (20) the needle (18) can be or is fastened by means of a connecting element (22) that can be slid on in the longitudinal direction. According to the invention, at least one radially inward cavity (34) is provided on the coupling segment (20), which cavity can be brought into engagement or is in engagement with at least one corresponding locking segment (32) provided on the connecting element (22). ## Claims ### Claim 1 A syringe comprising: a syringe body (12) having an axial inner cavity (16) and a coupling segment (20) at one longitudinal end thereof, the coupling segment having at least one radially inwardly formed cavity (34); a needle (18); and a connecting element (22) within which the needle is held, the connecting element being configured to connect the needle to the longitudinal end of the syringe body and comprising: a syringe body-side connecting segment (28); a needle-side supporting segment (30); several locking segments (32) arranged on the connecting segment (28) and configured to engage the cavity of the coupling segment, wherein the locking segments are arranged in a circumferential direction on the connecting segment, extend along an inner circumference of the connecting element (22), and project radially inwards; and grooves (66) that extend in a longitudinal direction such that the locking segments (32) comprise several locking segment parts (70, 72, 74) arranged on corresponding connecting segment parts (68), wherein the connecting segment parts (68) can be deflected in a radial direction (RR). ### Claim 2 (depends on 1) Syringe according to claim 1, wherein the syringe further comprises tensioning means for producing an axial pretension between the coupling segment (20) and the connecting element (22), the pretension acting on sealing elements (42, 44), which are accommodated between the coupling segment (20) and the connecting segment (22). ### Claim 3 (depends on 2) Syringe according to claim 2, wherein the tensioning means comprises the at least one cavity (34) on the coupling segment (20), wherein the cavity (34) extends along the circumference of the coupling segment (20) and is formed as a thread. ### Claim 4 (depends on 3) Syringe according to claim 3, wherein the thread is formed such that it has a transition (34-1, 34-2) to an outer circumferential surface (62) of the coupling segment (20) in both turning directions, and configured such that the connecting element (22) is able to turn not more than one turn with respect to the coupling segment (34). ### Claim 5 (depends on 1) Syringe according to claim 1, wherein the connecting element (22) comprises on the needle-side supporting segment (30) a boundary wall (36) that points radially inwards and includes an inner surface (40) that faces the syringe body (12), and through a center of which (38) the needle (18) passes, wherein in an assembled state of the syringe the boundary wall (36) exerts with the inner surface (40) an axial force onto sealing elements (42, 44) that lie against an axial front surface (46) of the coupling segment (20). ### Claim 6 (depends on 5) Syringe according to claim 5, wherein the needle-side supporting segment (30) further comprises a stabilizing ring (48) that points radially inwards, which lies in the assembled state of the syringe (10) against the front surface (46) of the coupling segment (20). ### Claim 7 (depends on 2) Syringe according to claim 2, wherein the sealing elements (42, 44) and the needle (18) are accommodated in the connecting element (22) such that they can be or are connected as a combined element to the coupling segment (20) of the syringe body (12). ### Claim 8 (depends on 1) Syringe according to claim 1, wherein the syringe body (12) and the coupling segment (20) is integrally formed. ### Claim 9 (depends on 1) Syringe according to claim 1, wherein the connecting element (22) is formed of synthetic materials. ### Claim 10 (depends on 1) Syringe according to claim 1, further comprising a needle holder (50) accommodated in the connecting element (22), which tightly encompasses a syringe body-side end (52) of a cannula (26) of the needle (18) in circumferential direction, and which is held in the assembled state of the syringe (10) by means of sealing elements (42, 44) between the connecting element (22) and an axial front surface (46) of the coupling segment (20). ### Claim 11 (depends on 4) Syringe according to claim 4, wherein the thread is formed such that the connecting element (22) is able to turn about โ…› to โ…ž of the circumference of the coupling segment (20). ### Claim 12 (depends on 6) Syringe according to claim 6, wherein the stabilizing ring (48) is formed integrally with the connecting element (22). ### Claim 13 (depends on 8) Syringe according to claim 8, wherein the syringe body (12) and the coupling segment (20) are integrally formed of glass.