PROBLEM TO BE SOLVED: To provide a medical guide wire for leading a catheter used for catheter treatment to a desired affected part inside a blood vessel, having a simple configuration and providing excellent production efficiency.SOLUTION: The guide wire includes a laminate structure having: a linearly extending base material 11B an oxide film layer 11C formed at an outer peripheral surface of the base material 11B by the base material 11B being immersed into a process liquid and a hydrophilic coating layer 11A formed adjacent to an outer peripheral surface of the oxide film layer 11C.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】例えば、カテーテル治療に用いられるカテーテルを血管内部の所望の患部へと導くための医療用のガイドワイヤであって、構成が簡単であり、製造効率のよいガイドワイヤを提供する。【解決手段】線状に延びる母材11Bと、前記母材11Bが処理液に浸漬されることで前記母材11Bの外周面に形成される酸化被膜層11Cと、前記酸化被膜層11Cの外周面に隣接して形成される親水性被膜層11Aと、を有する積層構造を備える。【選択図】図2
