The freedom of adaptable design to large surgical tip instrument in supporting force size further comprising, providing a minimally invasive surgical system including a surgical needle type device which realizes minimally invasive to the limit. Minimally invasive surgical system 1 of the present invention, the tip is stabilized surgical tip instrument 60 to the distal end of the needle structure 30 of the main shaft needle 31 and a plurality of sub-shaft needle 32 formed in a pointed shape is mounted removably specific and a support rigidity at its distal end portion to puncture the needle structure directly into the body cavity, and the lesion in the body cavity from the abdominal cavity hole Mb or natural orifice Ma using previously surgical tip instrument body cavity insertion means 200 by connecting the surgical tip instrument 60 inserted to the vicinity of the organ T a surgical procedure from running all within the body cavity, to achieve the ultimate minimally invasive, large, in surgical procedures in the weight class organ corresponding It has surgery needle type device 10 with freedom of possible designs.支持力大で大型手術先端器具にも対応可能な設計の自由度を備え、低侵襲性を極限まで実現させた外科治療用ニードル型デバイスを有する最低侵襲外科手術システムを提供する。本発明の最低侵襲外科手術システム1は、先端が尖鋭状に形成された主軸ニードル31及び複数の副軸ニードル32からなるニードル構造30の先端部に手術先端器具60が挿脱可能に取付けられ安定的な支持剛性を有し、ニードル構造を直に体腔内に穿刺してその先端部に、先に手術先端器具体腔内挿入手段200を用いて腹腔孔Mb又は自然開口部Maから体腔内の病変臓器Tの近傍まで挿入された手術先端器具60を連結して外科手術処置を体腔内で全て実行することから、極限的低侵襲性を実現させ、大型、重量級の臓器の手術手技にも対応可能な設計の自由度を備えた外科治療用ニードル型デバイス10を有する。
