{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://github.com/api-evangelist/st-jude-medical/json-schema/st-jude-medical-cardiac-device-schema.json",
  "title": "Cardiac Device",
  "description": "St. Jude Medical / Abbott implanted cardiac device and its remote monitoring status on the Merlin.net Patient Care Network",
  "type": "object",
  "required": ["deviceId", "deviceType", "patientId"],
  "properties": {
    "deviceId": {
      "type": "string",
      "description": "Unique identifier for the implanted cardiac device"
    },
    "deviceType": {
      "type": "string",
      "enum": ["ICD", "CRT-D", "CRT-P", "Pacemaker", "ILR"],
      "description": "Type of implanted cardiac device"
    },
    "model": {
      "type": "string",
      "description": "Device model name (e.g., Ellipse VR, Quadra Assura MP)"
    },
    "manufacturer": {
      "type": "string",
      "enum": ["St. Jude Medical", "Abbott"],
      "description": "Device manufacturer"
    },
    "serialNumber": {
      "type": "string",
      "description": "Device serial number"
    },
    "implantDate": {
      "type": "string",
      "format": "date",
      "description": "Date the device was implanted"
    },
    "patientId": {
      "type": "string",
      "description": "Unique identifier for the patient"
    },
    "clinicId": {
      "type": "string",
      "description": "Identifier for the monitoring clinic"
    },
    "remoteMonitoring": {
      "type": "object",
      "description": "Remote monitoring configuration and status",
      "properties": {
        "enabled": {
          "type": "boolean",
          "description": "Whether remote monitoring is enabled"
        },
        "transmitterModel": {
          "type": "string",
          "description": "Merlin@home transmitter model (e.g., EX1150)"
        },
        "lastTransmissionDate": {
          "type": "string",
          "format": "date-time",
          "description": "Date and time of the last successful transmission"
        },
        "scheduledTransmissionFrequency": {
          "type": "string",
          "enum": ["daily", "weekly", "monthly", "quarterly"],
          "description": "Frequency of scheduled transmissions"
        },
        "connectionType": {
          "type": "string",
          "enum": ["landline", "cellular", "wifi"],
          "description": "Type of connection used by the transmitter"
        }
      }
    },
    "batteryStatus": {
      "type": "object",
      "description": "Device battery information",
      "properties": {
        "voltage": {
          "type": "number",
          "description": "Current battery voltage in volts"
        },
        "estimatedReplacementDate": {
          "type": "string",
          "format": "date",
          "description": "Estimated date when battery replacement will be needed"
        },
        "status": {
          "type": "string",
          "enum": ["Normal", "Elective Replacement Indicator", "End of Life"],
          "description": "Battery replacement status indicator"
        }
      }
    },
    "leadMeasurements": {
      "type": "array",
      "description": "Measurements from device leads",
      "items": {
        "type": "object",
        "properties": {
          "leadLocation": {
            "type": "string",
            "enum": ["RA", "RV", "LV"],
            "description": "Lead location (Right Atrium, Right Ventricle, Left Ventricle)"
          },
          "impedance": {
            "type": "number",
            "description": "Lead impedance in ohms"
          },
          "threshold": {
            "type": "number",
            "description": "Pacing threshold in volts"
          },
          "sensing": {
            "type": "number",
            "description": "Sensing amplitude in millivolts"
          }
        }
      }
    },
    "alerts": {
      "type": "array",
      "description": "Active device alerts",
      "items": {
        "type": "object",
        "properties": {
          "alertId": {
            "type": "string"
          },
          "alertType": {
            "type": "string",
            "description": "Type of alert"
          },
          "severity": {
            "type": "string",
            "enum": ["Low", "Medium", "High", "Critical"]
          },
          "detectedDate": {
            "type": "string",
            "format": "date-time"
          },
          "description": {
            "type": "string"
          }
        }
      }
    }
  }
}