SYRINGE INCLUDING DIFFERENT MATERIALS
A syringe includes a syringe body, a syringe cone having a distal opening, and a connection arranged in the region of the syringe cone, wherein the syringe body includes a first material and the connection includes a second material, and wherein the first material is different from the second material and the second material is a softer material than the first material.
1 . A syringe, comprising:
a syringe body;
a syringe cone including a distal opening; and
a connection arranged in the region of the syringe cone, wherein the syringe body comprises a first material and the connection comprises a second material, wherein the first material is different from the second material, wherein the second material is a softer material than the first material, and wherein the first material is a cycloolefin-copolymer (COC) or a cycloolefin-polymer (COP).
2 . The syringe according to claim 1 , wherein the connection comprises a thread having sections.
3 . The syringe according to claim 1 , wherein the first material has an E-module and the second material has an E-module that is 10 to 60% lower than the E-module of the first material.
4 . The syringe according to claim 1 , wherein the E-module of the first material is in the range of >2500 to 3500 MPa and the E-module of the second material in the range of 1200 to 2500 MPa.
5 . The syringe according to claim 1 , wherein the E-module of the first material is in the range of 2700 to 3200 MPa and the E-module of the second material in the range of 1500 to 1800 MPa.
6 . The syringe according to claim 1 , wherein the impact strength of the second, softer material is greater than 2 Kj/m 2 .
7 . The syringe according to claim 1 , wherein the second material is a thermoplastic elastomer (TPE), an elastomer, a polypropylene (PP), a polycarbonate (PC), a polyethylene (PE), a polyamide (PA) or a COC-E.
8 . The syringe according to claim 1 , wherein the first and the second material includes materials which can be sterilized at temperatures>100° C.
9 . The syringe according to claim 1 , wherein the first and the second material includes materials which can be sterilized at a temperature of 121° C.
10 . The syringe according to claim 1 , wherein the first and the second material includes materials which can be sterilized at temperatures greater than 100° C. and less than or equal to 180° C.
11 . The syringe according to claim 1 , wherein the syringe body represents a first component of the syringe and the connection represents a second component, wherein the first and second component are definably detachably connected with each other at least one of mechanically and through coalesced and a friction type and a form fitting.
12 . The syringe according to claim 1 , wherein the connection has an outside geometry and the outside geometry is consistent with the outside geometry of a Luer-Lock adapter.
13 . A method for producing a syringe, including:
providing a syringe body comprising a first material and a connection comprising a second material that is softer than the first material, wherein the second material has an E-module that is 10 to 60% lower than the E-module of the first material, and wherein the first material is a cycloolefin-copolymer (COC) or a cycloolefin-polymer (COP); and
connecting the connection and the syringe body with one another through at least one of a material fit and a friction fit and a form fit and a coalesced fit.
14 . The method according to claim 13 , wherein the connection comprises a thread.
15 . The method according to claim 13 , wherein the coalesced fit is a weld.
16 . The method according to claim 15 , wherein the weld is an ultrasonic weld.
17 . A method for producing a syringe including a syringe body having a first material and a connection having a second material that is softer than the first material, wherein the second material has an E-module that is 10 to 60% lower than the E-module of the first material, the method comprising:
producing the syringe through multicomponent injection molding, wherein the first material is a cycloolefin-copolymer (COC) or a cycloolefin-polymer (COP).
18 . The method according to claim 17 , wherein the connection comprises a thread.
19 . The method according to claim 17 , wherein the multicomponent injection molding process is conducted in such a manner that the connection is definably detachable at stresses in excess of at least 25 Ncm.
20 . The method according to claim 17 , wherein the multicomponent injection molding process is conducted in such a manner that the connection is definably detachable at stresses in excess of at least 35 Ncm.