| 摘要 |
PROBLEM TO BE SOLVED: To provide a medical instrument capable of changing a material in a fluid state capable of being administered into a biological tissue using a tube body into a medical material having relatively low fluidity and indwelling the medical material in an optional region inside the biological tissue in a more desired shape/state, and capable of reducing undesirable influence on a living body.SOLUTION: A medical instrument 10 for changing a material having fluidity into a medical material M to indwell the medical material M by administering the material having fluidity into a biological tissue and reducing the fluidity of the material inside the biological tissue, has: a sheath 20 in which a storage lumen 23 is formed; a gap formation part 30 having two expansion parts 31 which can be projected in a distal direction from the inside of the storage lumen 23 and can be expanded in the radial direction of the sheath 20; an operation part 40 which can be moved inside the storage lumen 23, and can expand the expansion parts 31 by moving with respect to the expansion parts 31; and a supply part 50 in which a delivery lumen 51 capable of delivering the material is formed, and which can supply the material into a gap between the expansion parts 31 of an expanded state. |
