| 摘要 |
An inhaler for delivery of medicament from a canister which is compressible to deliver a dose of medicament. The inhaler comprises a housing 1 for holding a canister 2, the housing having a mouthpiece 5 for inhalation of a dose of medicament delivered by the canister 2 and a breath-actuated actuation mechanism 6 for compressing a canister 2 held in the housing 1 in response to inhalation at the mouthpiece 5. The actuation mechanism 6 includes a vane in the form of a flap 13 disposed across a duct 24, 32 extending from the mouthpiece 5 arranged to lock the canister 2 in a compressed state and being responsive to the inhalation at the mouthpiece 5 to release the canister 2 when the level of inhalation at the mouthpiece falls below a predetermined threshold. |
