The purpose of this study is to provide a medical guide wire which can easily discriminate the difference of the feel transmitted to the fingertip between the true and false cavities.Medical guide wire 10 of the present inventionCore wire 11In medical guide wire 10 comprising Coyle 30 fixed to the distal end of core wire 11 coaxialCoyle 30The first Coyle 31 is provided with a plurality of bamboo like recesses 50 on the outer peripheral surfaceOne undulating portionA small-diameter winding portion 51 having a relatively small diameter and a large diameter winding portion 52 which is formed to be spaced apart from the rear end portion of the small-diameter winding part 51The large-diameter winding portion 52 has a tapered winding portion 53 which is gradually reduced toward the smaller diameter winding portion 51.Owing to the provision of the plurality of relief portions 50, the sharpness due to the friction with the living tissue becomes large, and the difference between the feel of the true cavity and the false cavity becomes clearer than in the prior art.Diagram【課題】真腔と偽腔とで指先に伝わる感触の違いを従来よりも容易に判別することが可能な医療用ガイドワイヤを提供することを目的とする。【解決手段】本発明の医療用ガイドワイヤ１０は、コアワイヤ１１と、コアワイヤ１１の先端同軸上に固定されたコイル３０とを備えた医療用ガイドワイヤ１０において、コイル３０は、外周面に竹節状の複数の起伏部５０を備えた第１コイル３１を有し、１つの起伏部３０は、比較的小径な小径巻線部５１とその後方に離して形成された比較的大径な大径巻線部５２と、大径巻線部５２からその前方の小径巻線部５１に向かって徐々に縮径したテーパー巻線部５３とを備えている。複数の起伏部５０を設けたことにより生体組織との摩擦によるザラツキ感が大きくなり、真腔と偽腔との感触の違いが従来よりも明確になる。【選択図】図２
