The instrument and the method of having the material inside one which is introduced into the sack which anti- out metaplasia namely was made substantially with the indigestible characteristic material, for obesity remedy, was detained in lumen of the stomach of the mammal stomach at least. One or the material inside the plural stomachs is loaded in the delivery tube with the 1st form which is compressed partly, is delivered to the over tube. The over tube includes, with in order the proximal edge and the distal (2036) edge and it was detained to accept the material inside the stomach which to 1st form is in order to deliver in lumen of the stomach, the lumen which is formed with lumen of the stomach, expands the material inside the stomach in 2nd form. The instrument, when furthermore, it is delivered in lumen of the stomach, in order to shut in the material inside the stomach, the sack has the restraint element which is engaged.抗消化性すなわち実質的に不消化性の材料で作られており、肥満治療のために、哺乳動物の胃の内腔に留置された袋に導入される少なくとも1つの胃内部材を備えている器具と方法。1つ又は複数の胃内部材は、部分的に圧縮されている第1の形態で送達管の中に装填され、オーバーチューブに送達される。オーバーチューブは、近位端と、遠位端と、胃の内腔に留置されたに送達するために第1の形態にある胃内部材を受け入れるように構成されているルーメンとを含んでおり、胃の内腔で、胃内部材は第2の形態に拡張する。器具は、更に、胃の内腔の中に送達されると胃内部材を閉じ込めるため袋と係合する拘束要素を備えている。
