| 摘要 |
A blood aspirator (10) is composed of a suction circuit adapted to receive a flow of blood, a sensor (24) associated with the suction circuit for generating a signal relating to the presence of bubbles in aspirated blood in the suction circuit, a variable speed pump (16) coupled to the suction circuit and adapted to pump blood through the suction circuit, and a controller (30) for controlling the speed of the pump (16). The controller (30) causes the pump (16) to adjust the blood flow through the suction circuit so that a predetermined, nonzero concentration of bubbles flows through the suction circuit.
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