FISTULA TREATMENT DEVICES AND METHODS

PROBLEM TO BE SOLVED: To provide appropriate implantable fistula treatment devices and related methods.SOLUTION: Disclosed herein are implantable fistula treatment devices and related methods. In some embodiments, a distal anchor for an implantable fistula treatment device may comprise a suture and multiple foldable members including at least a distal-most foldable member and a proximal-most foldable member. The distal-most foldable member may comprise a suture attachment structure. The distal-most foldable member may comprise a distal end first average dimension sufficiently parallel with a longitudinal axis of the suture, a distal end second average dimension perpendicular to the distal end first average dimension, and a distal end third average dimension perpendicular to the distal end first average dimension and to the distal end second average dimension. The distal end first average dimension is allowed not to exceed 30 percent of a relatively large portion of the distal end second and third average dimensions. The proximal-most foldable member is configured to couple to a surface of a body lumen through a distal opening of a fistula.SELECTED DRAWING: Figure 16A 【課題】好適な瘻孔処置用デバイス及びその関連方法を提供すること。【解決手段】本発明は埋め込み型瘻孔処置用デバイス及びその関連方法を開示する。いくつかの実施例では、埋め込み型瘻孔処置用デバイスの遠位端アンカーは、１本の縫合糸と複数の折りたたみ部材を含み、また、少なくとも最遠位端折りたたみ部材と最近位端折りたたみ部材をそれぞれ１つずつ含むこと。最遠位端折りたたみ部材は、縫合連結仕組みを一つ含み得る。最遠位端折りたたみ部材は、十分に縫合糸の縦軸に平行する遠位端第１平均寸法と、遠位端第１平均寸法に垂直する遠位端第２平均寸法と、及び遠位端第１平均寸法と遠位端第２平均寸法とに垂直する遠位端第３平均寸法とを含み得る。遠位端第１平均寸法は、遠位端第２と第３平均寸法の比較的大きい部分の３０パーセントを超えなくてもいい。最近位端折りたたみ部材は、瘻管の遠位端管開口部を通じて、体腔の表面に配置して結合する。【選択図】図１６Ａ