PROBLEM TO BE SOLVED: To provide a surgical suture needle or an active canula capable of following a complicated route passing a cavity and tissue in a patients body.SOLUTION: An active canula 102 includes a plurality of overlapping flexible tubes 110, 115 and 120. Each of the tubes has previously formed curvature and predetermined flexibility. Each of the plurality of flexible tubes is selected on the basis of the predetermined curvature and flexibility so as to give an overlapping structure for providing a combination of overlapping flexible tubes which form a predetermined shape substantially matching a desired route passing the interior of the patients body. The respective parallel movements and angular directions of the flexible tubes are independently controlled to guide a surgical suture needle along a desired route in the interior of the patients body.COPYRIGHT: (C)2014,JPO&INPIT【課題】患者の体内の腔及び組織を通る複雑な経路を辿ることが可能な外科縫合針又は能動的カニューレを提供する。【解決手段】能動的カニューレ102は、複数の重なり合う可撓性チューブ110,115,120を有し、これらチューブの各々は予め形成された湾曲及び所定の可撓性を有する。複数の可撓性チューブの各々は、患者の体内を通る所望の経路にほぼ合致する所定の形状を形成する重なり合う可撓性チューブの組合せを提供する重複構造を与えるような、それぞれの所定の湾曲と可撓性とに基づいて選択される。可撓性チューブの各々の平行移動及び角度方向を独立して制御することにより、患者体内の所望の経路に従って外科縫合針を導くことができる。【選択図】図1
