Sanofi
CONSERVING POWER IN AN INJECTION DEVICE

Abstract:

A drug injection device (102) comprising: a cartridge (104) configured to hold a volume of a drug; one or more processors (120) configured to operate in at least an enabled state and a sleep state, wherein the one or more processors (120) are configured to control an operation of the drug injection device (102) while the one or more processors (120) are in the enabled state; a member (115) disposed in the cartridge (104), the member (115) including at least two conductive surfaces (122) electrically connected to the one or more processors (120); and a drive mechanism (106) including a conductive element (124) spaced from the at least two conductive surfaces (122), wherein the one or more processors (120) are configured to enter the enabled state from the sleep state when the conductive element (124) makes electrical contact with the at least two conductive surfaces (122).