| 摘要 |
<p>A disposable syringe for use in a needle-free hypodermic injector, which includes a transparent plastic cylinder with an injection orifice at a closed front end thereof and an open rear end for receiving a piston. The cylinder is filled with medicine by using a needle, which may form an integral part of the cylinder, by means of the partial withdrawal of the piston from the cylinder in order to suck medicine through the injection orifice. The cylinder and the piston are located in an injector and the latter is actuated in order to push the piston inside the cylinder, discharging the medicine. Alternatively, the syringe is filled with medicine whilst it is in an injector of the type which includes a removable injection head and a removable charging or filling head. (Fig. 1)</p> |
