To improve the operability of an endoscope and increase the degree of freedom of endoscopic surgery.An endoscope apparatus 1 includes an endoscope 10, a cylindrical retractor 20, and a connection support member 50 for connecting the retractor 20 to the support means 5. The retractor 20 includes a cylindrical portion 22 through which the endoscope 10 and the forceps 2 are inserted, and a spherical supported portion 25 provided in the cylindrical portion 22. The outer peripheral surface of the supported portion 25 is spherical. The coupling support member 50 has a supporting seat surface 55 in the shape of a concave spherical surface receiving the supported portion 25.BACKGROUND OF THE INVENTION【課題】内視鏡の操作性を向上させ、内視鏡下手術の自由度を高める。【解決手段】内視鏡装置1は、内視鏡10と、筒状のレトラクター20と、前記レトラクター20を支持手段5に連結する連結支持部材50とを備えている。レトラクター20は、内視鏡10及び鉗子2が挿通される筒部22と、筒部22に設けられた球状の被支持部25とを含む。被支持部25の外周面は、球面状になっている。連結支持部材50が、被支持部25を受ける凹球面状の支持座面55を有している。【選択図】図1
