Syringe including different materials

Abstract

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.

What is claimed is: 
     
         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.