Apparatus, system and method for determining compliant use of an intraoral appliance

An intraoral device for treatment of sleep disorder of a patient, comprising:

• memory;
• a detector;
• processing circuitry coupled to the memory and the detector;
• interrupt circuitry configured to periodically interrupt a sleep state of the processing circuitry,
• wherein the processing circuitry is configured to control the intraoral device to:
• based on the sleep state of the processing circuitry being interrupted by the interrupt circuitry to power the processing circuitry, determine, based on a signal received from the detector, if the intraoral device is positioned in the mouth of the patient, and
• based on determining that the intraoral device is positioned in the mouth of the patient, record, in the memory, measurement data including a value that is a difference between a first signal received from the detector and a second signal received from the detector, and time data in association with the measurement data;
• and
• a transponder coupled to the processing circuitry and configured to communicate the recorded measurement data and the recorded time data to an external device.