首页>
外国专利>
Metered-Dose Inhaler Counter (MDI) with Lateral Switches and Metered-Does Inhaler Including such a Counter
Metered-Dose Inhaler Counter (MDI) with Lateral Switches and Metered-Does Inhaler Including such a Counter
展开▼
机译:带有侧向开关的定量吸入器计数器(MDI)和包括这种计数器的定量吸入器
展开▼
页面导航
摘要
著录项
相似文献
摘要
A dose counter for a metered-dose inhaler (MDI) has an actuator housing and canister with an activation valve at a valve end of the canister. The dose counter includes a circuit assembly having a substrate with at least a first and a second switch thereon. The first and second switches are sized and positioned to interact with the valve end of the canister when the canister moves from a rest position to an activation position, such that the first switch is triggered when the canister reaches a first longitudinal position and the second switch is triggered when the canister reaches a second longitudinal position that is offset from the first longitudinal position during movement of the canister from the rest position to the activation position. A counting circuit is configured to receive a signal from the first and second switches and to determine when the metered dose inhaler is activated.
展开▼