PROBLEM TO BE SOLVED: To capture air bubbles mixed in blood under extracorporeal circulation on non-contact with blood by utilizing ultrasonic waves and discharge them by separation from blood while avoiding the generation of hemolysis.SOLUTION: This gas-liquid separation processor comprises a reactor 2 having a vessel wall which forms a cavity 2a, an inflow pipe part 3 provided in the vessel wall, a bubble discharge pipe part 5 provided in the vessel wall of the point facing the inflow pipe part in the tube axis direction, an outflow pipe part 4 provided in the vessel wall by orienting the tube axis in a direction crossing the tube axis of the inflow pipe part, a pair of ultrasonic transducers 6a, 6b provided in the vessel walls of regions adjacent to the inflow pipe part and the bubble discharge pipe part, respectively, and a driving circuit that generates ultrasonic oscillation by driving the ultrasonic transducers with high-frequency power. Ultrasonic stationary waves are formed in the cavity by driving a pair of the ultrasonic transducers.COPYRIGHT: (C)2015,JPO&INPIT【課題】体外循環する血液中に混入した気泡を、溶血の発生を回避しながら、超音波を利用して血液非接触で捕捉し、血液から分離して排出する。【解決手段】空洞2aを形成する容器壁を有するリアクタ2と、容器壁に設けられた流入管部3と、流入管部と管軸方向で対向する箇所の容器壁に設けられた気泡排出管部5と、流入管部の管軸に対して交差する方向に管軸を配向させて容器壁に設けられた流出管部4と、流入管部および気泡排出管部のそれぞれに隣接した領域の容器壁に設けられた一対の超音波振動子6a、6bと、超音波振動子を高周波電力により駆動して超音波振動を発生させる駆動回路とを備えた気液分離処理装置。一対の超音波振動子を駆動することにより、空洞内に超音波の定在波を形成する。【選択図】図3
