| 摘要 |
PCT No. PCT/GB99/01184 Sec. 371 Date Dec. 17, 1999 Sec. 102(e) Date Dec. 17, 1999 PCT Filed Apr. 16, 1999 PCT Pub. No. WO99/53979 PCT Pub. Date Oct. 28, 1999An injection device has a drive spring which, when released, urges a loaded capsule forwards to project its needle from the end of a barrel and ejects the dose. A light return spring then retracts the needle. The drive spring acts on the capsule plunger through a drive member having a movable barrier against which the rear end of the plunger initially abuts. A first trigger releases the drive member and drive spring and after an injection a second trigger can be actuated to shift the barrier relative to the drive member and allow the return spring to act.
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