disclose an implantable fistula treatment devices and methods described herein. In some embodiments, the distal anchor for implantable fistula treatment device includes a suture may include a plurality of folding member including at least a distal-most folding members and the proximal-most folding member. The most distal folding member may include a suture attachment structure. Recent position folding member may be configured to be coupled with the surface of the body cavity at the distal opening of the fistula.移植可能な瘻治療デバイスおよび方法を本明細書に開示する。いくつかの実施形態では、移植可能な瘻治療デバイス用の遠位アンカーは、縫合糸と、少なくとも最遠位折り畳み式部材および最近位折り畳み式部材を含む複数の折り畳み式部材とを備え得る。最遠位折り畳み式部材は、縫合糸取付構造を備え得る。最近位折り畳み式部材は、瘻の遠位開口部において体腔の表面と連結するように構成し得る。