description: จำนวนชิ้นของอุปกรณ์ที่ใช้ในการตรวจ
package_name: silth.fhir.th.extensions
derivation: constraint
name: EX_TH_ObservationDeviceAmount
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'https://fhir-ig.sil-th.org/th/extensions/StructureDefinition/ex-observation-device-amount'}
    index: 1
  value:
    choices: [valueQuantity]
    index: 3
  valueQuantity: {type: Quantity, choiceOf: value, index: 4}
package_version: 1.0.0
extensions: {}
class: extension
kind: complex-type
url: https://fhir-ig.sil-th.org/th/extensions/StructureDefinition/ex-observation-device-amount
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 1.0.0
required: [value, valueQuantity]