| 摘要 |
FIELD: medicine. SUBSTANCE: automatic intake ampoule 1 for subcutaneous injections, which contains liquid to be injected, uses cylinder 3 having a wall, and piston 44 that can accomplish reciprocating motion in cylinder 3 for creation of vacuum in ampoule 1 and for displacement of injected liquid from it; piston 44 uses a female annular part with a vertically directed cylindrical hole, having a cylindrical flat bottom portion, cylindrical flat top portion, positioned at a definite distance from the above cylindrical flat bottom portion, and a side portion connecting made integral with them; the mentioned side portion has an angle of inclination to the horizontal plane of about 1 deg to about 89 deg; and a mushroom-shaped male part, using cylindrical rod 52 of the piston with a slide fit in the mentioned female annular part and a cone-shaped head on one end of rod 52, made integral with it and having an angle of inclination to the horizontal plane of about 1 deg to about 89 deg, and elastomer plastics diaphragm-shell 44, having a cylindrical bottom portion and made integral with it into the cone-shaped side portion and covering the mentioned male and female parts; the mentioned cylindrical bottom portion is adapted to form a sliding seal between the female annular part and wall of cylinder 3, and the mentioned cone-shaped side portion is adapted to serve as a diaphragm, due to which at an alternate application of force to above rod 52 of the piston and at removal of it diaphragm deformation decreases the space in the front part of cylinder 3, thus forcing out the gas from it, and as soon as the force is removed, the diaphragm restores its initial shape causing an intake. EFFECT: enhanced convenience in use. 8 dwg |
