Metered-dose inhaler counter with switch and metered-dose inhaler including such a counter
US9943656B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2015 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Aug 26, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/502
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dose counter includes a triggering unit having at least a first and a second trigger member thereon. The triggering unit is configured interact with the canister of a metered-dose inhaler when the canister moves in a longitudinal direction from a rest position to an activation position. A circuit assembly includes a substrate with at least a first and a second switch thereon. The first and second switches are configured to interact with the first and second trigger members when the canister moves from the rest position to the activation position. The circuit assembly includes a counting circuit that is configured to receive a signal from the first and second switches and to determine when the metered dose inhaler is activated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.