recovery can be smoothly performed to the filter member 3, yet it has a simple structure to provide an easy intravascular educt capture instrument 100 of operation. For this purpose, in the folded state, it is provided an elastic steel wire 6 extending in the base direction of the slide tube 21 from the distal end of the narrowing portion K along the outside of the slide tube 21 in addition in the ring-shaped elastic wire 31.フィルタ部材3の回収を円滑に行うことができ、しかも構造が簡単で操作の容易な血管内遊離物捕獲器具100を提供する。そのために、折畳状態において、リング状弾性線材31におけるくわえ込み部分Kの先端部からスライドチューブ21の外側に沿って該スライドチューブ21の根元方向に延びる弾性鋼線6を設けた。
