This resource is an administrative resource that tracks individual instances of a device and their location. It is referenced by other resources for recording which device performed an action such as a procedure or an observation, referenced when prescribing and dispensing devices for patient use or for ordering supplies, and used to record and transmit Unique Device Identifier (UDI) information about a device such as a patient’s implant.
These are the device related resources
– Device (this resource)
– DeviceDefinition – Describes a “kind” of device – not a physical instance, cut a “catalog entry” where a device is defined by the manufacturer, reseller, or regulator.
– DeviceMetric – Describes a measurement, calculation or setting capability of a medical device.
In FHIR, the “Device” is the “administrative” resource for the device (it does not change much and has manufacturer information etc.), whereas the Device Component and Device Metric (which is really a kind of Device Component) model the physical part, including operation status and is much more volatile. The physical composition of a Device is represented by the Devices pointing to their “parent”.
Devices differ from medications because they are not “used up” – they remain active in a patient in an ongoing fashion. However, the specific boundary between medications and devices is defined at the implementation level and this standard does not enforce a boundary with the exception of devices that are implanted in a patient. The Medication resource should not be used to represent implanted devices.
Fast Healthcare Interoperability Resources (FHIR) is a draft standard describing data formats and elements (known as “resources”) and an application programming interface (API) for exchanging electronic health records. The standard was created by the Health Level Seven International (HL7) health-care standards organization.
Its goal is to facilitate interoperation between legacy healthcare systems, to make it easy to provide healthcare information to healthcare providers and individuals on a wide variety of devices from computers to tablets to cell phones, and to allow third-party application developers to provide medical applications which can be easily integrated into existing systems.
FHIR provides an alternative to document-centric approaches by directly exposing discrete data elements as services. For example, basic elements of healthcare like patients, admissions, diagnostic reports and medications can each be retrieved and manipulated via their own resource URLs (Uniform Resource Locators). FHIR was supported at an American Medical Informatics Association meeting by many EHR (Electronic Health Record) vendors which value its open and extensible nature.