APPARATUS FOR INJECTION OF DRUGS Russian patent published in 1994 - IPC

FIELD: medical engineering. SUBSTANCE: one of inserts of hollow casing is in contact in initial position with one of end surfaces of end shoulders of movable button whose other end surface has revolving end teeth of ratchet mechanism of metering device. Pusher is hollow and is provided with contact head for syringe piston at one end and internal operating surfaces at the other. Operating member of movable button is made as spindle cantilevered inside, partly disposed in hollow Pusher and provided with external flats contacting with operating surfaces of said Pusher. Other end surface of Pusher has non-revolving end teeth of ratchet mechanism of metering device, which interact with turnable end teeth of button end shoulder. EFFECT: improved functional and operating characteristics. 2 cl, 10 dwg