An implantable medical device for connecting tissue layers to form an anastomosis, for example, connecting a portion of the gallbladder and a portion of the gastrointestinal tract, includes a tubular structure having a plurality of juxtaposed portions, a central portion, and a dressing Including. The method of using the instrument includes endoscopic placement, and the instrument can include a self-expanding skeleton that facilitates a secure connection between tissue structures. [Selection] Figure 2吻合を形成するために組織層を接続するための、例えば、胆嚢と胃腸管の一部を接続するための移植可能医療器具は複数の並置部を有する管状構造体、中央部、及び被覆材を含む。前記器具の使用方法は内視鏡下での配置を含み、それらの器具は組織構造間の確実な接続を促進する自己拡張性骨組みを含み得る。【選択図】図2