870.4310—Cardiopulmonary bypass coronary pressure gauge.
               		
               		
               	 	
               	 	
               	 	
               	 		
    
        
        (a) Identification.
         A cardiopulmonary bypass coronary pressure gauge is a device used in cardiopulmonary bypass surgery to measure the pressure of the blood perfusing the coronary arteries.
     
    
        
        (b) Classification.
         Class II (performance standards).