| 摘要 |
<p>An extracorporeal blood circulation system including a line for withdrawing the venous blood from the patient, an artificial lung provided on the line, a reservoir for the blood withdrawn, a blood supply line for sending out the blood from the reservoir to the artery of the patient, and a blood supply pump provided on the blood supply line and serving as an artificial heart. The amount of blood to be supplied is automatically controlled to maintain the arterial pressure of the patient in a suitable required range. The blood supply pump is stopped when the arterial pressure of the patient measured is above a predetermined upper limit value, while the pump is driven when the arterial pressure has lowered to a level below a lower limit value. The system has means for generating a trigger pulse upon detecting contraction of the heart of a patient for spontaneous circulation, a circuit for generating a trigger pulse in accordance with a heart rate set for forced circulation, means for selecting one of the trigger pulses, and means for driving the pulsatile pump in response to the selected trigger pulse.</p> |
