PROBLEM TO BE SOLVED: To provide a device for use within an occluded biological vessel to remove occlusion material from the tube.SOLUTION: The device includes an elongated body and projections arranged around a distal portion the elongated body. The protrusions are collapsed with respect to the elongated body when advancing distally through an occlusion in a biological tube, and expand radially outward by itself when the device is located in the occlusion in the biological tube and drawn proximally. Each of the projections includes a leaf-like structure having a length and a width in the peripheral direction of the elongated body, the leaf-like structure having a shape of a recessed face along a width such that the inner surface of the leaf-like structure has a shape of a surgical spoon when the protrusions expand radially outward in the biological tube to scoop an object forming the occlusion.SELECTED DRAWING: Figure 1【課題】閉塞した生体管内で使用して管から閉塞物を取り除くための装置を提供する。【解決手段】本装置は、伸長本体と、伸長本体の遠位部分の周囲に装着された複数の突起部とを備え、複数の突起部は、生体管内で閉塞を通って遠位方向に進むとき伸長本体に対して折り畳まれ、装置が生体管内の閉塞内に位置決めされ近位方向に引かれるとき半径方向外側へ自ら広がり、複数の突起部はそれぞれ、長さと、伸長本体の外周方向における幅と、を有する葉状構造を含み、葉状構造は、突起部が生体管内で半径方向外側へ広がって閉塞を形成する物をすくうとき葉状構造の内面が外科用さじ状形状を有するように幅に沿った凹面形である。【選択図】図１
