PROBLEM TO BE SOLVED: To provide an indwelling needle that can reduce the amount of X-ray exposure.SOLUTION: An indwelling needle includes a hollow sheath conductor part, and a sheath base part which is fixed to a base end part of the sheath conductor part and is composed of a cylindrical member. At least a part of the sheath conductor part includes a near infrared fluorescent dye that emits near infrared fluorescence upon near infrared irradiation with wavelengths of 500-1400 nm.COPYRIGHT: (C)2014,JPO&INPIT【課題】X線被爆量を低減できる留置針を提供する。【解決手段】中空のシース導体部と、前記シース導体部の基端部に固定され、筒状の部材で構成されたシース基部と、を有する留置針であって、前記シース導体部の少なくとも一部が、波長500~1400nmの近赤外線照射時に近赤外蛍光を発する近赤外蛍光色素を含む、留置針。【選択図】なし
