INJECTOR SUPPLIED WITH MEDICINE.

摘要

An injector supplied with a feed quantity of a medicine (5) sealed inside the cylinder (1) thereof before used for injection and, in particular, to an injector supplied with a medicine requiring addition of liquid thereto at the time of injection. A characteristic of the invention is such that a plunger (4) is formed longer than a distance of movement thereof required for sucking the liquid into the cylinder (1). This structure can prevent the medicine and the liquid from being polluted by bacteria because the inner wall of the cylinder (1) is shielded by the plunger (4) to be kept in a sterilized state before brought into contact with the medicine and the liquid being sucked.