description: Length of time of the device's operation (e.g., days, hours, mins, etc.). package_name: hl7.fhir.uv.extensions.r3 derivation: constraint name: DeviceOperationDuration type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/device-operation-duration'} index: 1 value: choices: [valueDuration] index: 3 valueDuration: {type: Duration, choiceOf: value, index: 4} package_version: 5.3.0-ballot-tc1 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/device-operation-duration base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.3.0-ballot-tc1