Drug Delivery Device with Brake Mechanism

摘要

A drug delivery device (1) comprises a housing and an expelling assembly adapted to expel a dose of drug from a cartridge (380). The expelling assembly comprises a drive spring (135) which in an energized state is adapted to drive the expelling assembly, a rotating component (550,650) adapted to rotate relative to an axis of rotation during expelling of a dose of drug, and user actuated release means (191, 190) for releasing the drive spring to thereby expel a dose of drug. The device is provided with a brake element (575, 675) being moveable in a plane generally perpendicular to the axis of rotation, the brake element being adapted to engage the rotating component such that during rotation thereof the brake element is moved back and forth, whereby the brake element provides a braking action on the rotating component.

主权项

1. A drug delivery device comprising or being adapted to receive a cartridge, the cartridge comprising a cylindrical body portion, an axially displaceable piston, and a distal outlet portion, the drug delivery device comprising:
a housing, an expelling assembly adapted to axially move the piston of a cartridge to thereby expel a dose of drug, comprising:
a drive spring which in an energized state is adapted to drive the expelling assembly,a rotating component adapted to rotate relative to an axis of rotation during expelling of a dose of drug,user actuated release structure for releasing the drive spring to thereby expel a dose of drug,the device further comprising a brake element being moveable in a plane perpendicular to the axis of rotation, the brake element being adapted to engage the rotating component such that during rotation thereof the brake element is moved back and forth by the rotating component, whereby the brake element provides a braking action on the rotating component.