Abstract: Medication delivery devices are provided having a sensor in the form of a switch having a conductive pad and a cantilevered arm that is moveable toward and away from the conductive pad. Contact between the cantilevered arm and the conductive pad changes the state of the switch, while lack of contact between the cantilevered arm and the conductive pad changes the state of the switch. The switch may be used to sense dosage of medication delivered during dose delivery. The switch may interact with a rotating component having a plurality of teeth that slide against the cantilevered arm during dose delivery.

Abstract: Medication delivery devices are provided having a dose delivery sensing capability. A dose button includes a support and a cover that at least partially encloses an electronics assembly including a sensor for detecting rotation of a component during dose delivery to determine a dosage of delivered medication. The electronics assembly includes a controller for receiving a signal from the sensor. The medication delivery device may be configured to communicate dosage delivery information to an external device.

Abstract: An injection device assembly including a housing, a syringe, a drive mechanism and one or more sensing systems are described. The drive mechanism advances the syringe from a storage position to an injection position, and a plunger advances the syringe piston from an initial position to a final position. The status sensing system may include one or more main PCB(s) disposed in an end portion of the injection device assembly's housing. The system may determine various parameters related to an operational status of the injection device, including the location of the devices components, an amount of medication remaining in the device, a temperature of the medication, and whether or not the device is properly contacting the users skin before injection. The system may communicate such determined parameters to an external device via a wireless communication link.

Abstract: An injection device assembly including a housing, a syringe, a drive mechanism and one or more sensing systems are described. The drive mechanism advances the syringe from a storage position to an injection position, and a plunger advances the syringe piston from an initial position to a final position. The status sensing system may include one or more main PCB(s) disposed in an end portion of the injection device assembly's housing. The system may determine various parameters related to an operational status of the injection device, including the location of the devices components, an amount of medication remaining in the device, a temperature of the medication, and whether or not the device is properly contacting the users skin before injection. The system may communicate such determined parameters to an external device via a wireless communication link.