Patent ID: 6978780

Claim:
An inhaler for administering medicament by inhalation, comprising: an inhalation channel; a rotatable dosing unit which includes at least one dosing element for providing a dose of medicament to the inhalation channel; and a dose counting unit which comprises an electronic display that displays usage of said inhaler, an electrical circuit for counting each dose of medicament provided to the inhalation channel and driving the display so as to provide an indication as to said usage of the inhaler, the electrical circuit including at least one switch which comprises a contact element that is movable between a first open position and a second closed position when a dose of medicament is provided to the inhalation channel, ad a rotatable member connected to the dosing unit so as to be rotatable therewith, the rotatable member including at least one cam surface which includes at least one cam, each cam on each cam surface being configured, on rotation of the dosing unit to provide a dose of medicament to the inhalation channel, to be in physical contact with said contact element and cause movement of the contact element of said at least one switch between said first open position and said second closed position.