Device
Device is the administrative software (like uDTC or mobile apps) that generates the information retrieved from the DeviceComponents (glucometers or insulin pumps, Insulin Pen). From a Device we can relate one or more child DeviceComponents, optional nested DeviceComponents and DeviceMetrics.
phg-device
Devices (glucometers, IPs, CGMs) are represented as an IEEE 11073 containment tree of device related FHIR resources. The tree consists of a Device, one or more child DeviceComponents, optional nested DeviceComponents, and DeviceMetrics.
It is important to note that this containment tree was originally developed to support POCD devices, and maps to IEEE 11073 standards.
The design philosophy of using this containment tree additionally for modeling PHD devices and PHGs (PH Gateways such as Phones, PCs) is to maintain strict compatibility with the POCD devices and broader modeling, so that domain models that refer to devices are not different in reference.