868.1920 Esophageal stethoscope with electrical conductors.§ 868.1920 Esophageal stethoscope with electrical conductors.
(a) Identification. An esophageal stethoscope with electrical conductors is a device that is inserted into the esophagus to listen to a patient's heart and breath sounds and to monitor electrophysiological signals. The device may also incorporate a thermistor for temperature measurement.
(b) Classification. Class II (performance standards).