PROBLEM TO BE SOLVED: To provide a guide wire improving rotation properties (operability of the guide wire), while retaining insertion properties of the guide wire, and reducing a possibility of being peeled (turned up) from a tip of a resin layer.SOLUTION: A guide wire 1 includes: a rear end part 42 in which a resin layer 40 covers an outer periphery of a coil body 30 and which has a thick outside diameter D1 a tip part 46 which is located between a core shaft 10 and the coil body at a tip side than the rear end part and has an outside diameter D2 narrower than that of the rear end part and a tapered part 44 which has an outside diameter reducing from D1 to D2 toward the tip side between the rear end part and the tip part, where the coil body at the tip part is not covered by the resin layer but is exposed. This configuration can improve rotation properties (operability of the guide wire) of the guide wire, while retaining insertion properties of the guide wire, and reducing a possibility of being peeled (turned up) from a tip 47 of the resin layer.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】ガイドワイヤの挿入性を維持しつつ、ガイドワイヤの回転性能(ガイドワイヤの操作性)を向上させ、かつ、樹脂層の先端から剥離する(めくれる)恐れも低減したガイドワイヤを提供する。【解決手段】ガイドワイヤ1では、樹脂層40がコイル体30の外周を被覆し、太い外径D1を有する後端部42と、後端部よりも先端側でコアシャフト10とコイル体との間に位置し、後端部よりも細い外径D2を有する先端部46と後端部と先端部との間で先端側に向かって外径がD1からD2へと縮径するテーパ部44とを有し、かつ先端部でのコイル体は、樹脂層に被覆されておらず露出している。これにより、ガイドワイヤの挿入性を維持しつつ、ガイドワイヤの回転性能(ガイドワイヤの操作性)を向上させ、かつ、樹脂層が、その先端47から剥離する(めくれる)恐れも低減できる。【選択図】図1
