Bubble removal cap and syringe assembly

A bubble removal cap (12) is provided with: a cylindrical main body section (30) having therein a hollow section (38) connected to a collection tube (10) that accommodates bodily fluid from a living body; a connection part (44) which is provided on the base end side of the hollow part (38) and to which a collection tube (10) is connected; an exhaust section (46) that is provided on the tip side of the hollow section (38) and discharges gas discharged from the collection tube (10); a filter (42) that is provided in the hollow section (38) and partitions the exhaust section (46) and the connection section (44); and a scattering prevention mechanism (48) which covers the base end side of the filter (42) and prevents the body fluid from scattering to the filter (42). 气泡去除帽(12)具备：筒状的主体部(30)，其在内部具有与收容来自生物体的体液的采集管(10)连接的中空部(38)；连接部(44)，其设置于中空部(38)的基端侧，供采集管(10)连接；排气部(46)，其设置于中空部(38)的前端侧，将从采集管(10)排出的气体排出；过滤器(42)，其设置于中空部(38)，对排气部(46)和连接部(44)进行分隔；以及防止飞散机构(48)，其覆盖过滤器(42)的基端侧来阻止体液向过滤器(42)飞散。