SYRINGE FOR MULTIPLE COMPONENTS

摘要

PURPOSE: To obtain a syringe for multiple components with which an easy discarding treatment and production are possible by molding an outside cylinder of plastics, forming through holes at the outside cylindrical wall between a plug body and an exit port end, mounting a cover member to cover these through holes on the outside wall surface of the outside cylinder and forming flow passages for injection components by the inside wall of this cover member and the through holes. CONSTITUTION: The outside cylinder 2 of this syringe 1 for the multiple components is formed of a plastic molding and the through holes 7 formed at the outside cylinder 2 exist between the injection port 2A end of the outside cylinder 2 and the rubber plug body 4, thereby making the housing side of medicines 5 and the outer side thereof communicate with each other. The spacing L between the through holes 7 is formed larger than the tight contact region width W of the rubber plug body 4. Slit-like lancing grooved parts 11 are formed on the outside wall surface of the outside cylinder 2 connecting the through holes 7 to each other. The cover member 9 is molded of the same resin as the resin of the outside cylinder 2 and is bonded to the outside wall surface of the outside cylinder 2. The cover member 9 is formed to an arc shape in section and the inner wall surface is formed with slit--like lancing grooved parts 12. The through holes 7 are covered by both ends of the grooved parts 12.