HEART PERFUSIOX APPARATUS 



425 



Funnel (refilling 

 & air vent) 



n solution 

 (Diluted blood + 

 a 53 It solution) 



Metal pan 

 Hot wafer bath 



WC. 



Cork in 

 / clamp 



39C 



^Heart 

 lever , 



Tube soldered 

 between 



oxygen or 

 compressed air 



Fig. 340. Arrangement of apparatus for recording tracings from an excised heart 

 (Langendorff method). The heart warmer is made of two cheap metal pails held together 

 by a metal tube soldered between them at the bottom. Through this tube passes the thread 

 attached by a pin hook to the heart. The space between the pails is filled with water 

 heated by the flame of a Bunsen burner applied to the heating rod. 



