| 摘要 |
<p>Support casing for a hypodermic syringe for administration of injections for cylindrical ampoules, has an ampoule holder with an injection needle and a piston rod for displacing a plug piston closing off the end of the cylindrical ampoule, in which the holder and the piston rod are fabricated in plastic, the former being cylindrical with a holder for the injection needle at one end and open over its full cross section at the other end, and the latter having a handle joined both to a cylindrical tube, with its outer and inner dias. fitting the inner dia. of the ampoule holder and the outer dia. of the ampoule respectively, and to a ram surrounded concentrically by, but spaced from, this tube so as to form an annular slot.</p> |
