Aventis Pharma Limited

Andrew J Ledgeway

Graham Keith Lacy

Stephen John Minshull

Duncan Grant Young

Simon Paul Wells

Julian F R Swan

Julian Francis R Swan

A counter mechanism useable with a dry powder inhaler is disclosed. The mechanism features first and second indicator members rotatable about a central axis. The indicator members have counting indicia visible to indicate inhaler doses remaining or dispensed. A coupling transmits rotary motion from the inhaler to the second indicator member when the inhaler is charged with a dose. A slave wheel, rotatable about an axis offset from the central axis, has a drive transfer wheel on one face and a gear on an opposite face. The gear engages the second indicator member, the drive transfer wheel intermittently engages and rotates the first indicator member in response to rotary motion of the second indicator member.

Slave wheel counter mechanism useable with an inhaler

Provided herein are dry powder inhalers for the delivery of metered doses of medicament, counters associated with the inhalers for counting and displaying the number of doses administered or remaining within the inhaler, and methods of use thereof.

Inhaler

Growing community of inventors

London, United Kingdom

Andrew J Ledgeway