The over tube for the tube cavity wall stab of this invention, lumen in order to pass through operation instrument such as endoscope provides the sleeve for the distal (2036) edge of the pipe, and the said pipe of insertion possible flexibiility in the possessing and tube intracavity, it possesses the lumen of the axis direction where the said sleeve, has with the basic end and the trailer, extends from the said basic end to the said trailer, and the open-ended knitting it is the mesh which is packed to diameter direction of lumen of said sleeve, the said trailer most when it contracts, the said trailer, incising the organization of the tube cavity wall to the said diameter directionWithout doing the point whose it is possible to divide the said organization, according to the fiber direction of the said organization is formed, and the said basic end, is connected by the said pipe, in order and to possess the said pipe and abbreviation equal inside diameter, is expanded to said diameter direction. As for the over tube for the tube cavity wall stab of this invention, for example, NOTES (body chart non incision endoscope operation) it is useful in the compilation closed method of safety and the secure sutra tube cavity route in.本発明の管腔壁穿刺用オーバーチューブは、内視鏡などの手術器具を通すための内腔を有しそして管腔内に挿入可能な可撓性の導管、および該導管の遠位端にスリーブを備え、該スリーブが、基端部と終端部とを有し、該基端部から該終端部まで延びる軸線方向の内腔を有し、そして該スリーブの内腔の径方向へ拡張可能な編み込まれたメッシュであり、該終端部が該径方向へ最も収縮している場合に、該終端部が、管腔壁の組織を切開することなく該組織の繊維方向に沿って該組織を押し分けることが可能な先端を形成し、そして該基端部が、該導管に接続され、そして該導管と略同等の内径を有するように該径方向に拡張されている。本発明の管腔壁穿刺用オーバーチューブは、例えば、NOTES(体表無切開内視鏡手術)における安全かつ確実な経管腔ルートの作成・閉鎖法に有用である。
