The SNAP Model 8 is an at home sleep recorder with five data channels that records respiratory and oximetry data. A nasal/oral cannula houses a pressure sensor that records the respiratory air flow and respiratory sounds. An oximeter is integrated into the device and records oxygen saturation and pulse rate. A respiratory effort belt records respiratory effort and optionally can record body position.
A mains electricity (AC-powered) device designed to record physiological signals from a sleeping patient to assess sleep disorders (e.g., insomnia, snoring or sleep apnoea). The device is typically computerized and usually records an electrocardiogram (ECG), electroencephalogram (EEG), chest wall motion, airflow at both the nose and the mouth, eye movements, haemoglobin oxygen saturation (SpO2) and electromyogram (EMG). Parameters may be added or omitted depending on the study being performed. The device includes multiple electrodes/sensors placed on the patient in specific areas as well as amplifiers and filters for recording.