PROBLEM TO BE SOLVED: To provide a foreign object collection device excellent in operability which can easily collect a foreign object within a living body by a simple operation.SOLUTION: A holding portion 250 for holding a foreign object s is structured from a shape memory member which is shaped to contract inwardly in a radial direction of a catheter body 100 as it protrudes from the distal end of the catheter body. A control portion 210 has a magnetic force exertion unit 211 which interlocks an axial movement of the control portion 210 with an axial movement of an operation member 220 by exerting a magnetic force between the control portion and the operation member 220 having the holding portion.SELECTED DRAWING: Figure 3【課題】生体内の異物を簡単な操作で容易に回収することを可能にする操作性に優れた異物回収デバイスを提供する。【解決手段】異物ｓを保持する保持部２５０は、カテーテル本体１００の先端からの突出に伴ってカテーテル本体の放射方向内側に向けて収縮するように形状付けがなされた形状記憶部材により構成されており、制御部２１０は、保持部を備える操作部材２２０との間で磁力を作用させることにより軸方向への制御部２１０の移動と軸方向への操作部材２２０の移動とを連動させる磁力作用部２１１を有している。【選択図】図３
