Multiple cavity carrier apparatuses for detecting removal of items from cavities and their replacement

Abstract

Devices, systems and methods are provided to detect when items are removed from a multiple cavity carrier (MCC) that stores items (e.g., pen needle assemblies) in respective cavities. A separate, reusable data collection unit (DCU) can be mounted to the MCC and has sensors for detecting cavity status (e.g., empty or filled with an item). The DCU stores data related to time stamps, optional dates, and cavity locations of item removal from and optional used item return to respective ones of the MCC cavities to help users track item usage (e.g., pen needle assemblies) to improve medication delivery management such as insulin injections with an injection pen and pen needle assemblies. Indicators can be generated to indicate from which cavity the next item should be extracted to encourage injection site rotation.