Fig. 5

a: Photograph of a sheep one week after the implantation of extra-thoracic paraaortic counterpulsation device (ETPACD).The picture shows that the sheep survived well with the ETPACD (shown by the arrow). terpulsation device (ETPACD).  The picture shows that the sheep survived well with the ETPACD (shown by the arrow). b. The sheep was then sacrificed and the ETPACD was examined for possible thrombus formation. There was no thrombus formation in the chamber of ETPACD