PROBLEM TO BE SOLVED: To provide a medical device capable of removing easily bubbles in a housing in which a signal transmission/reception part is arranged, and acquiring proper information.SOLUTION: A medical device 1 has: a sheath 2 to be inserted into a lumen and a housing 80 in which a recessed part 82 arranged rotatably inside the sheath 2 and storing an ultrasonic transducer 411 is formed on an outer peripheral surface 81, and in which a bubble guiding path 85 is formed, which is capable of guiding bubbles B from the recessed part 82, extendedly from a side part 83 on a rotation direction side of the recessed part 82 to the outer peripheral surface 81.COPYRIGHT: (C)2014,JPO&INPIT【課題】信号送受信部が配置されるハウジング内の気泡を容易に除去でき、適正な情報を取得可能な医療用デバイスを提供する。【解決手段】管腔内へ挿入されるシース2と、前記シース2の内部に回転可能に配置されるとともに超音波振動子411を収容する凹部82が外周面81に形成され、前記凹部82の回転方向側の側部83から外周面81に延在して前記凹部82から気泡Bを誘導可能な気泡誘導路85が形成されるハウジング80と、を有する医療用デバイス1である。【選択図】図4
