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Dose counting in metered dose inhaler

  • US 20060254581A1
  • Filed: 05/09/2006
  • Published: 11/16/2006
  • Est. Priority Date: 05/12/2005
  • Status: Abandoned Application
First Claim
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1. A counter for indicating the number of doses left in a canister that is suitable for use in a metered dose inhaler, comprising:

  • a module for providing an indication of the number of doses left in the canister; and

    a triggering mechanism for updating the indication in response to activation of the inhaler;

    whereby the counter is affixed to the canister.

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