| 摘要 |
Disclosed is a guide wire having a loss lossy marker having desired shape and size formed at a desired position while ensuring a high contrastability under X-ray fluoroscopic guidance or the like, wherein the sharpness of the marker can be ensured by suppressing heat generation upon formation of the marker. The guide wire includes a linear core member, a resin layer formed to cover a main body portion of the core member, and a contrasting portion formed to cover a distal end portion of the core member. The resin layer contains a color developing agent allowed to develop a color by irradiation with laser light, and a contrast agent composed of a powder of a metal oxide. The contrasting portion is made from a resin containing a contrast agent composed of a metal powder and has a contrasting function higher than that of the resin layer. A visible marker formed into a spiral shape or the like is formed on the outer surface of the resin layer. The visible marker is formed by color development of the color developing agent by irradiating the surface of the resin layer with laser light. <IMAGE>
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