A retrieval device (10) having a contracted state and an expanded state includes a sheath (12, 104), at least two lumens, a proximal end secured to the sheath (12, 104), and a sheath (12, 104). And at least three support members (26, 28, 30, 158, 160, 162) each having a distal end movable relative thereto. The retrieval device (10) also includes at least three movable members (18, 20, 22, 152, 154, 156) that are movable relative to the support members (26, 28, 30, 158, 160, 162). Can do. Each movable member (18, 20, 22, 152, 154, 156) passes through the lumen of one of the at least three support members (26, 28, 30, 158, 160, 162) and The at least three support members (26, 28, 30, 158, 160, 162) can extend through the lumens of different support members. [Selection] Figure 2収縮状態及び拡張状態を有する回収デバイス（１０）は、シース（１２、１０４）と、少なくとも２つの内腔、シース（１２、１０４）に固定された近位端、及びシース（１２、１０４）に対して移動可能な遠位端を各々が有する少なくとも３つの支持部材（２６、２８、３０、１５８、１６０、１６２）とを含むことができる。回収デバイス（１０）はまた、支持部材（２６、２８、３０、１５８、１６０、１６２）に対して移動可能な少なくとも３つの可動部材（１８、２０、２２、１５２、１５４、１５６）を含むことができる。各可動部材（１８、２０、２２、１５２、１５４、１５６）は、少なくとも３つの支持部材（２６、２８、３０、１５８、１６０、１６２）のうちの１つの支持部材の内腔を通ってかつ少なくとも３つの支持部材（２６、２８、３０、１５８、１６０、１６２）のうちの異なる支持部材の内腔を通って延びることができる。【選択図】図２
