| 摘要 |
A breath-operated device having a return mechanism for deactivating a canister to close when an airflow drops below a certain threshold value, is new. A breath-operated device having a return mechanism for deactivating a canister to close when an airflow drops below a certain threshold value, is new. The device is used with an inhaler and comprises an actuator mechanism for activating a canister to open and dispense a medicament in response to an airflow in the inhaler caused by user inhalation through an opening, and a return mechanism for deactivating the canister to close. The return mechanism comprises a flap, cylindrical shuttle, second arm, rotatable holders, and a fork-like member deactivates the canister when the airflow drops below a certain threshold value. The actuator mechanism comprises pressure plate (34), cylindrical body (36), flap, first arm (44), cylindrical shuttle, rotatable holders, and fork-like member. The inhaler comprises a body containing medicament, an aerosol canister arranged in the body, a nozzle fluidly connected with the canister, and an opening for dispensing the medicament which is also fluidly connected with the nozzle. The body includes a metered dose chamber, and dispenses a metered dose of the medicament. An Independent claim is also included for a medical distributor for distributing medicament to a patient, comprising breath-operated devices arranged in sequence with one another. |
