PROBLEM TO BE SOLVED: To provide an air trap chamber capable of more sufficiently and reliably removing air bubbles included in a predetermined liquid, and also capable of reducing the volume of a chamber part.SOLUTION: Provided is an air trap chamber 5 that comprises: a chamber part 5c connected to a blood-circulating blood circuit and capable of receiving a predetermined volume of blood a blood introduction inlet 5aa capable of introducing blood in the blood circuit into the chamber part 5c and a blood discharge outlet 5ca capable of discharging the blood in the chamber part 5c to the blood circuit, and that traps and removes air bubbles included in the blood received in the chamber part 5c, the air trap chamber 5 being characterized in comprising a wall part 7 capable of causing the blood introduced through the blood introduction inlet 5aa to flow upward, and then causing the blood to flow downward toward the chamber part 5c.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2016,JPO&INPIT【課題】所定の液体に含まれる気泡をより十分且つ確実に除去することができ、チャンバ部の容量を低減させることができるエアトラップチャンバを提供する。【解決手段】血液を流通させる血液回路に接続されるとともに、所定容量の血液を収容し得るチャンバ部5cと、チャンバ部5cに血液回路の血液を導入させ得る血液導入口5aaと、チャンバ部5cの血液を血液回路に導出させ得る血液導出口5caとを有し、当該チャンバ部5cに収容された血液に含まれる気泡を捕捉して除去するためのエアトラップチャンバ5において、血液導入口5aaから導入した血液を上方に向かって流動させた後、チャンバ部5cに流下させ得る壁部7を具備したものである。【選択図】図3
