And to provide a therapeutic device for ear, nose and throat can not be made SOLVED] X-ray fluoroscopy, which facilitates alignment of the expandable body inside the nasal cavity. Which is provided is introduced into the paranasal sinus via SOLUTION: A nasal elongated body provided with a flexible (11), the elongate body (11), located between the sinuses and nasal expandable body having a (12a) extended the effective part push the narrowed portion of the natural opening by extending radially deformed in a natural opening (12), the distal side of the (12) expandable body elongate body (11) provided integrally with the elongate body (11), the treatment device sinusitis with imaging means for obtaining an image in front of the distal end of the elongate body (11) and a (13). [Selection Figure Figure 4【課題】X線透視を行なうことなく、鼻腔内部における拡張体の位置合わせを容易に行うことができる耳鼻咽喉用の治療装置を提供する。【解決手段】鼻腔を介して副鼻腔内に導入される、可撓性を備えた長尺体(11)と、長尺体(11)に設けられ、鼻腔と副鼻腔との間に位置する自然口において径方向に拡張変形して自然口の狭窄部を押し広げる拡張有効部(12a)を有する拡張体(12)と、長尺体(11)における拡張体(12)よりも遠位側に長尺体(11)と一体的に設けられ、長尺体(11)の遠位端の前方の画像を取得する撮像手段(13)と、を有する副鼻腔炎の治療装置。【選択図】図4
