A kind of channel of Minimally Invasive Surgery, system is in a hollow tube, contain an axially extending bore, on the tube wall of the opposite sides in the what channel, it is equipped with the wears groove of lengthwise respectively, and the tube wall in the what channel is equipped with most broken parts, respectively the broken part system is provided to the channel that fractures, to reduce the length in the channel or to the matte between the horizontal what wears groove that fractures, to increase the length person of the wears groove.一種微創手術之通道，係呈一中空管體，含有一軸向通孔，於該通道之相對兩側的管壁上，分別穿設有縱長的穿槽，並於該通道之管壁上設有多數折斷部，各該折斷部係提供用以折斷該通道，以縮減該通道之長度或者用以折斷橫置於穿槽間之遮片，以增加該穿槽之長度者。
