Abstract: An electronic system for a drug delivery device is provided. The electronic system comprises: at least one user interface member, which is arranged to be manipulated by a user of the drug delivery device, and an electrical user proximity detection unit. The user interface member has an exterior operation surface arranged and configured to be touched by a user of the drug delivery device during operation of the drug delivery device. The electrical user proximity detection unit is configured to generate a signal when the user is close to or touches the exterior operation surface.

Abstract: A drug delivery device, comprising housing comprising one or more bridging contacts; a movable dial located at least partially within the housing and arranged to move relative to the one or more bridging contacts, the movable dial comprising a series of conductive strips on an exterior surface of the movable dial, wherein the one or more bridging contacts selectively connect and disconnect conductive strips of the series of conductive strips as the movable dial moves to provide alternating electrical signals; at least one electronic component configured to: detect the alternating electrical signals; determine whether the alternating electrical signals are indicative of contact between conductive strips of the series of conductive strips and the one or more bridging contacts; and based on the alternating electrical signals, determine a medicament dosage programmed into the drug delivery device.

Abstract: The invention resides in a hand-held medicament delivery device which comprises a housing containing a first electrical circuit and a battery, a medicament delivery mechanism, and a protective cap releasably securable to the housing. The housing also includes a contactless switch and the cap a switch actuator. The switch is operable between an on state in which the first electrical circuit is connected to the battery and an off state in which the first electrical circuit is disconnected from the battery. The invention also resides in a method of controlling power in a hand held medicament delivery device comprising the steps of actuating a contactless switch in the housing by an actuator in a housing cap when the switch and actuator are in proximity, the actuation of the switch signalling to a microprocessor that the cap is on the housing, detecting the status of the device by the microprocessor, and only if the microprocessor determines the device is inactive, powering down the device.

Abstract: The invention resides in a hand-held medicament delivery device which comprises a housing containing a first electrical circuit and a battery, a medicament delivery mechanism, and a protective cap releasably securable to the housing. The housing also includes a contactless switch and the cap a switch actuator. The switch is operable between an on state in which the first electrical circuit is connected to the battery and an off state in which the first electrical circuit is disconnected from the battery. The invention also resides in a method of controlling power in a hand held medicament delivery device comprising the steps of actuating a contactless switch in the housing by an actuator in a housing cap when the switch and actuator are in proximity, the actuation of the switch signalling to a microprocessor that the cap is on the housing, detecting the status of the device by the microprocessor, and only if the microprocessor determines the device is inactive, powering down the device.