DRIVE MECHANISM OF A DRUG DELIVERY DEVICE COMPRISING AN ACCESSORY DRIVE

• Main Authors: GILMORE, Stephen Francis, DRAPER, Paul Richard, MORRIS, Anthony Paul
• Format: Patent
• Language: English; French; German
• Published: 07.04.2021
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

The present invention relates to a drive mechanism of a drug delivery device and to a respective drug delivery device for setting and dispensing of a dose of a medicament, the drive mechanism comprising: - an elongated housing (12) extending in an axial direction (1, 2), - a piston rod (22) to operably engage with a piston (20) of a cartridge (14) containing the medicament, - a dosing arrangement (31) manually and axially displaceable relative to the housing (12) for setting and dispensing of the dose, - an accessory drive (26) operably engaged with the piston rod (22) to support a manually operated dose dispensing displacement of the dosing arrangement (31).