CARTRIDGE INJECTOR

PROBLEM TO BE SOLVED: To provide a disposable injector with less sliding resistance allowing an entire injector 21 to be disposed to solve a problem with infectious diseases, formed in such a structure that only contaminated portions are treated and portions not contaminated are recycled to reduce waste portions. SOLUTION: In this cartridge injector 2, the chemical storage portion 24 of the injector 21 is formed in an independent bellows cartridge container 10, the cartridge container is combined with an outer tube 9 and a plunger 13, and a chemical fill-out member 1 is connected to the combination thereof to integrally form these parts. When the chemical is released by the plunger 13, the cartridge container 10 is contracted and a hook 11 installed in the cartridge container is pressed into a hook receiver 7 and fixed in the contacted state. Then, the only the cartridge portion is separated from the cartridge injector and treated. The outer tube 9 and the plunger 13 can be recycled by replacing the cartridge at the chemical storage portion. COPYRIGHT: (C)2004,JPO