DRIVE MECHANISM FOR A DRUG DELIVERY DEVICE

摘要

The present invention relates to a drive mechanism for a drug delivery device for dispensing of a dose of a medicament, and to a respective drug delivery device, wherein the drive mechanism comprises:—an elongated housing (20) extending in an axial direction (1, 2),—a piston rod (160) to operably engage with a piston (14) of a cartridge (12) to displace the piston (14) in axial distal direction (1),—a first dose indicating member (81) rotatably supported on a longitudinal axis (4),—a second dose indicating member (82) axially adjacent to the first dose indicating member (81) and rotatably supported on the longitudinal axis (4),—a dose setting sleeve (50) extending in axial direction (1, 2), rotatably engaged with the first dose indicating member (81) and axially extending through the first dose indicating member (81) to rotatably engage with the second dose indicating member (82).

主权项

1. A drive mechanism of a drug delivery device for dispensing of a dose of a medicament, the mechanism comprising:
an elongated housing (20) extending in an axial direction (1, 2), a piston rod (160) to operably engage with a piston (14) of a cartridge (12) to displace the piston (14) in axial distal direction (1), a first dose indicating member (81) rotatably supported on a longitudinal axis (4), a second dose indicating member (82) axially adjacent to the first dose indicating member (81) and rotatably supported on the longitudinal axis (4), a dose setting sleeve (50) extending in axial direction (1, 2), rotatably engaged with the first dose indicating member (81) and axially extending through the first dose indicating member (81) to rotatably engage with the second dose indicating member (82).