| 摘要 |
PCT No. PCT/GB97/01614 Sec. 371 Date Dec. 18, 1998 Sec. 102(e) Date Dec. 18, 1998 PCT Filed Jun. 16, 1997 PCT Pub. No. WO97/48430 PCT Pub. Date Dec. 24, 1997An injection device has a two part barrel. The forward part (10) telescopes into the rear part (3) and within the barrel a capsule (1) with a needle (2) at its forward end is initially held by a trigger (11) formed integrally with the forward part (10) so that the needle (2) does not project. The trigger (11) is inoperable at this stage, being inaccessible because of the telescopic overlap. A spring (20) acts on a plunger at the rear of the capsule. When the overlap is increased, the trigger (11) becomes accessible through a slot (7), and when it is operated the capsule (1) is released for the spring (20) to shoot it forwards and eject the dose through the now projecting needle (2). The capsule (1) may have a two part dose and its mixing may then be effected by the spring (20), fully compressed after the overlap increase, urging the plunger forwards. |
