SYRINGE Russian patent published in 1994 - IPC

FIELD: medicine. SUBSTANCE: cup 7 is mounted for longitudinal movement onto case 1. One end of rod 6 is connected to the bottom of cup 7, and the other end is in contact with piston 5. Rod and piston are connected together by means of breakable members in form of traction rods, onto which resilient restrictors 16 are made in form of funnels. Slackened parts 17 in form of annular grooves are made onto rods between piston 5 and the restrictor being the closest member to the piston. EFFECT: improved efficiency. 7 dwg