PROBLEM TO BE SOLVED: To provide a nail deformation preventing tool that is attached to an approximately flat nail so as to suppress an external pressure applied in a direction to deform the nail, thereby making it possible to prevent deformation of the nail.SOLUTION: Left and right nail edge portions 11 of an approximately flat nail and opposite end portions in a nail width direction of a flat plate-shaped nail shape protector 1a having flexing resistance, which is formed in such a length as to permit bridging across the nail width, are to be engagingly inserted into and clamped to slits 3 of fasteners 2a respectively disposed at the left and right nail edge portions 11. This ensures that the nail shape protector 1a is used by being bridged over an approximately flat nail plate 13.COPYRIGHT: (C)2015,JPO&INPIT【課題】 略平状の爪へ装着することで、爪を変形させる方向へ加わる外圧を抑制して、爪の変形を未然に予防できる爪変形防止具に関する。【解決手段】 略平状の爪の左右爪縁部11と、爪幅間で架設できる長さで成形された平板状の耐撓曲性を有する爪形保護体1aの爪幅方向両側端部とを、左右爪縁部に夫々配置された留め具2aの夫々スリット3へ嵌挿し、挟着したことで、該爪形保護体1aを略平状の爪甲13上へ架設され使用する。【選択図】図2