FIELD: medical engineering. SUBSTANCE: indicator is used for injection of accurately measured doses of pharmaceutic preparations. Indicator connected to syringe dose buttom produces certain sound after full dose is injected. Dose end indicator has appliance for producing the sound when dose injection buttom is pressed and another appliance for repeated actuation of the above indicated appliance. Sound producing appliance operates only at end of dose buttom motion. EFFECT: improved design. 6 cl, 5 dwg
