MEDICAL GUIDE WIRE

PROBLEM TO BE SOLVED: To provide a medical guide wire, with which difference in texture conducted to fingers between a true lumen and a false lumen may be easily determined when compared to a conventional one.SOLUTION: A medical guide wire 10 of the present invention is a medical guide wire 10 comprising a core wire 11 and a coil 30 coaxially fixed with the tip of the core wire 11, in which the coil 30 includes a first coil 31 having a plurality of uneven parts 50 of a bamboo nodal ring shape on the peripheral surface thereof. One uneven part 50 has a small diameter wire winding part 51 having a comparatively smaller diameter, a large diameter wire winding part 52 a comparatively larger diameter which is formed at the rear side thereof with an interval, and a taper wire winding part 53 which has a diameter gradually narrowing from the large diameter wire winding part 52 to the small diameter wire winding part 51 at front thereof. By virtue of the plurality of uneven parts 50, roughness due to friction with living tissue is increased and difference between a true lumen and a false lumen becomes clearer when compared to conventional one.SELECTED DRAWING: Figure 2 【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