| 摘要 |
FIELD: medical engineering. ^ SUBSTANCE: device has body having holes in upper part and movable piston with rod mounted in the device body. The rod is mounted in one of the body holes. The device has spring-loaded valve. The rod has smooth step for making engagement with ring, threaded portion and smooth step having ring-shaped groove for guiding the rod. The rod has central hole for receiving rod, opening with cone engageable with valve, two holes for receiving joint-pins and ring-shaped groove for receiving sealing ring. Threaded rod portion is mounted in casing hole. The rod is connected to the piston by means of two joint-pins arranged in rod holes and ring-shaped rod notch. The pins are freely rotatable in piston hole. The spring-loaded valve is mounted in piston hole and upper body part hole. ^ EFFECT: simplified design; reliability in operation. ^ 2 dwg |
