description: A device that represents implanted seeds for brachytherapy.\nThe device is specified by the type of radioactive seed (at a minimum). package_name: hl7.fhir.us.codex derivation: constraint name: RadiotherapySeedDevice type: Device elements: type: binding: {strength: required, valueSet: 'http://hl7.org/fhir/us/codex-radiation-therapy/ValueSet/codexrt-brachytherapy-device-type-vs'} index: 0 package_version: radiation-therapy-1.0.0 class: profile kind: resource url: http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-seed-device base: http://hl7.org/fhir/us/core/StructureDefinition/us-core-implantable-device version: 1.0.0