A cannula for arthroscopy is presented for reducing operation cuts. This cannula includes a tube, a separation and a joint. The separation is set inside the tube and extends along the axial direction of the tube, so that the separation divides the inside of the tube into a first lumen and a second lumen. The joint connects at one end of the tube, and the inside of the joint communicates with the first lumen and the second lumen.一種關節鏡手術用套管,用以解決以往關節鏡手術需使用數個套管而造成較多傷口數的問題。本發明的關節鏡手術用套管包含:一管本體;一分隔件,設於該管本體的內部,該分隔件沿著該管本體的軸向延伸,以將該管本體的內部分隔出一第一腔室及一第二腔室;及一接頭,連接在該管本體的一端,該接頭的內部與該第一腔室及第二腔室相連通。1‧‧‧管本體1a‧‧‧穿入端1b‧‧‧裸露端11‧‧‧外表面12‧‧‧內表面13‧‧‧螺紋部2‧‧‧分隔件2a、2b‧‧‧側緣2c‧‧‧端緣3‧‧‧接頭31‧‧‧插入口32‧‧‧輸液口S1‧‧‧第一腔室S2‧‧‧第二腔室
