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).