Dose setting mechanism and method of using the same

摘要

The present invention relates to a dose setting mechanism for a drug delivery device and a method of using same. The mechanism comprises a drug delivery device housing, a dose dial component positioned in the housing and rotatable during dose setting and dose delivery, a clutch rotatable during dose setting and non-rotatable during dose delivery having, preferably located at a distal end, clutch teeth, and a clutch ring engaged with the housing in a first rotatable configuration and in a second non-rotatable configuration.

主权项

1. A dose setting mechanism for a drug delivery device, the mechanism comprising:
a drug delivery device housing; a dose dial sleeve positioned in the housing and rotatable during dose setting and dose delivery, a clutch rotatable during dose setting and non-rotatable during dose delivery, wherein the clutch releasably couples the dose dial sleeve to a driver during dose setting and uncouples the dose dial sleeve and the driver during dose delivery; and a clutch ring, which is engageable with the clutch and which is engaged with the housing in a first rotatable configuration until a predetermined minimum dose is reached and in a second non-rotatable configuration, wherein allowing the clutch ring to rotate in its first rotatable configuration prevents dose dispensing.