The invention is an improved unit structure for controlling the bending of the endoscopic catheter, mainly providing an innovative unit composition, which is applied to the interior of the distal hose part of the endoscopic catheter. Each unit can be simply clamped with each other, and the swing angle between each two units can be set to obtain stable operation effect.The feature of this creation is the structural improvement of the unit.The main system of each unit is hollow cylinder.One end is provided with two symmetrical circular convex arc plates.On the other two sides of the hollow cylinder,Each is provided with a concave arc circular groove.Therefore, the circular convex arc plate of one unit can be directly clamped to the concave arc circular groove of another unit.There is no need to implement any more processing procedures for monomer combination.And a wire hole is arranged in the other wall of the concave arc circular groove.After threading,Naturally, the two units can be connected with each other.And the two units are rotatable.In addition,The two end faces of each unit are respectively provided with an inclined plane inclined inward at a specific angle.According to the different design requirements of the control conduit of the operators,Provide precise operation without over bending.Achieve practical progress.本創作為一種內視鏡控制導管彎曲之單元體改良構造，主要提供一種創新的單元體組成，應用於內視鏡導管遠端軟管部的內部，其各單元體間可簡易相互卡合，而可設定每二單元體間擺動之角度，獲得穩定的操作效果者。本創作之特徵在於單元體的結構改良，各單元體主體係為空心圓柱體，其一端設有二對稱的圓形凸弧板，另於空心圓柱體的另端二側，各設有一凹弧圓形槽，故可將一單元體的圓形凸弧板直接卡合於另一單元體的凹弧圓形槽，無需再實施任何單體間結合之加工程序，並於凹弧圓形槽的另一管壁內設有線孔，經由於穿線後，自然即可使二單元體相互連結，且二單元體間呈可旋動之狀態者，另外，各單元體的二端面分別設以向內傾斜一特定角度的斜面，可依操作人員不同的控制導管設計需求各式彎度，提供精確的操作且不會有彎曲過度情況，達到實用進步性者。
