Critical considerations on the production of a pulsating fluid stream

: Two types of gears are used for perfusion of cadaveric kidneys. Electric models are presented for both types and the optimal devices are discussed. Based upon in vivo conditions, the relevant parameters are transferred to the model and an according equipment for pulsatile fall-stream perfusion is presented, which is compared with another gear. The clinical criterion for good initial perfusion is the erythrocyte count in the initial perfusate. Judged from that, the chosen device is significantly better than its predecessor.