West Pharmaceutical Services, Inc.
Drug delivery device state recognition

Abstract:

A method of detecting and/or tracking use of a drug delivery device is disclosed. The drug delivery device includes a machine readable code and a visual indicator, and has pre-use and used states, such that use of the drug delivery device triggers a transition from the pre-use to the used state. The visual indicator has a first state when the drug delivery device is in the pre-use state and a different second state when the drug delivery device is in the used state. The method includes enabling a user device having an image sensor to capture an image of the drug delivery device, determining, by the user device processor from the captured image, whether the visual indicator of the drug delivery device is in the second state, and obtaining, by the processor, information from the machine readable code when the visual indicator is determined to be in the second state.