PROBLEM TO BE SOLVED: To provide a guide wire, where its top end always remains flexible by preventing a wax material from flowing to a tightly wound coil part of the guide wire without fail, when the guide wire includes such tightly wound coils.SOLUTION: The guide wire 10 includes a core wire 20 that reduces in diameter toward the leading end 23, and a metallic coil 30 attached to the outer circumference of the tip of core wire 20. The metallic coils 30 include a first pitch opening 35 wound and provided with a clearance C left between wire materials 34, 34, a coil group 37 all tightly wound without such clearance between the wire materials, and a second pitch opening 39. These opening and coil are positioned in the order of their distance from the operators hand on the guide wire 10. The metallic coil 30 is waxed to the core wires 20 at least at three locations, i.e., the first pitch opening 35, the part of the second pitch opening 39 in the vicinity of the tightly wound coil part 37, and the leading end of the second pitch opening 39. In the metallic coils 30 waxed, all the brazed parts are 0.1 to 3 mm long in the axial direction of the coils 30.COPYRIGHT: (C)2011,JPO&INPIT【課題】コイルに密着巻き部があっても、その部分にロウ材が流れることを確実に防止して、ガイドワイヤ先端部での柔軟性を維持できるガイドワイヤを提供する。【解決手段】このガイドワイヤ10は、先端部23が縮径された芯線20と、芯線20の先端部外周に装着された金属コイル30とを有し、金属コイル30には、ガイドワイヤ10の手元側から、線材34,34間に隙間Cを設けて巻回された第1ピッチ開き部35と、線材間に隙間のない密着巻き部37と、第2ピッチ開き部39とが設けられており、金属コイル30は、第1ピッチ開き部35と、第2ピッチ開き部39の密着巻き部37に近接した部分と、第2ピッチ開き部39の先端部分との少なくとも3箇所で、芯線20にロウ付けされており、前記各ロウ付け部分の金属コイル30の軸方向に沿った長さが0.1~3mmとされている。【選択図】図2
