PROBLEM TO BE SOLVED: To provide an infusion set of an ultrasonic contrast medium, which is easy to control volume and size of air bubble.SOLUTION: The medium infusion set includes an air bubble generator that generates an ultrasonic contrast medium from an air supersaturated water, where there is too much air to be soluble, by vibrating or flowing the water so as to cause a pressure drop so that bubbles are generated in the air supersaturated water. Thus, it is possible to infuse in vivo the ultrasonic contrast medium containing air bubbles.COPYRIGHT: (C)2013,JPO&INPIT【課題】気泡の量や大きさの制御が容易な超音波造影剤の注入装置を提供する。【解決手段】飽和溶解量以上の気体が溶存する気体過飽和水を圧力低下が生じるように振動又は流動させ、その圧力低下により気体過飽和水中に気泡を発生させて気体過飽和水から気泡を含む超音波造影剤を生成する気泡発生装置を備え、気泡を含む超音波造影剤を生体内に注入する。【選択図】図1
