| abstract |
An injection device with puncture function includes, in a single casing 30, a cylindrical cartridge 11 in which insulin 12 is enclosed, a cartridge holder 14 to which the cartridge 11 is inserted, a needle 16 inserted at a front end 11 a of the cartridge 11, a reciprocation means 32 for reciprocating the cartridge 11 toward the needle 16, and an extrusion means 23 for extruding the insulin 12 from a rear end 11 b of the cartridge 11 toward the needle 16, and the motion speed and the motion amount of the reciprocation means 32 are made variable. |