DOSE-SETTING DEVICE AND SYRINGE PROVIDED WITH THIS DOSE-SETTING DEVICE Russian patent published in 2003 - IPC

FIELD: medical equipment designed for injection of drugs. SUBSTANCE: syringe has body accommodating ampoule with drug sufficient for a series of dosed injections, injection push button, piston rod for engagement with piston in ampoule during injection. Dose-setting device has rotatable dose-setting member connected with push button, wheel for dose introduction connected with piston rod, and connecting ring connected with dose-setting member and push button. One of wheels for dose introduction with connecting ring, at least, partially surrounds the other. Wheel for dose introduction and connecting rod are made so that rotation of dose-setting member allows rotation of connecting ring to any direction relative to wheel for dose introduction, and setting into motion of push button resulting in rotation of connecting ring causes rotation of wheel for dose introduction. EFFECT: provided high accuracy in dose setting and return from set dose. 6 cl, 5 dwg