| 摘要 |
There is provided a blood pump apparatus which can supply a pulsating flow of the blood to a body of a patient at a desired rate of flow. R waves are detected from an output of an electrocardiograph to produce a timing signal which is used for controlling timing of intermittent actuation of a motor of a blood pump such as a roller-type pump. A rotation speed of the motor required to obtain the desired flow rate of the blood is automatically calculated in accordance with data inputted by an operator, the data including discharge of the pump per a predetermined revolution of the motor, delay time to be lapsed before an actuation of the motor, duration of the actuation of the motor, and amount of the blood to be fed per a unit period of time. The motor is then controlled to rotate at the calculated speed at the intervals synchronized with the detected R waves. The rotation speed of the motor can be controlled accurately by correcting the calculated rotation speed of the motor in accordance with a detected number of revolution of the motor. The timing of each actuation of the motor can also be controlled so that the pump is driven at intervals synchronized with timing signals generated by a pulse generator. |
