The invention relates to the mounting ready for straightening tool for mounting always open in a short time widthwise edge of severe ingrown nail. It becomes bent SOLUTION: A linear elastic material, the first and second braces 20, 30 capable of engaging the right side of the nail 1, the left edge 2A, the 2B, the engaged state, first the claw 1 The wound 1, the second appliance 20, 30 is made of seaming member 40 for attracting these first orthosis 20 includes a first hook portion 21 engageable with the right edge 2A, pawl engagement is formed continuously at 25 within the first straight plane, and a first arcuate portion 23 which is convexly curved so as to abut against the instep 3, the first free end portion opposite to the first hook portion 21 is 29, it is continuously formed at 35 within the second straight plane, the second hook portion 31 of the same, and a second arcuate portion 33, a second orthosis 30, have a second free end portion 39 then, tighten the winding member 40, 41 within the common straight plane perpendicular to the surface of the nail plate 3, the right side in the width direction, the left edge 2A, the second hook portion 21 and 31 and first and 2B symmetrically while being hooked, it is possible to wound between them, including a second free end portion 39 and the second arcuate portion 33 and between them, including a first free end portion 29 and the first arcuate portion 23 preliminary correction tool 10 severe wound nail was. [Selection Figure] Figure 1【課題】重度の巻き爪の幅方向端縁を短時間で開いて常時装着用の矯正用具の装着可能な状態にする。【解決手段】線状弾性材を屈曲してなり、爪1の右側、左側端縁2A、2Bに係合可能な第1、第2装具20、30と、爪1に係合状態の、第1、第2装具20、30に巻き付けられ、これらを引き付ける巻き締め部材40とからなり、第1装具20は右側端縁2Aに係合可能な第1掛止部21と、係合状態で爪甲3に当接するように凸に湾曲された第1円弧状部23とを、第1直平面25内で連続して形成してなり、第1掛止部21と反対側が第1フリーエンド部29とされ、第2装具30は、同様の第2掛止部31と、第2円弧状部33とを、第2直平面35内で連続して形成し、第2フリーエンド部39を有し、巻き締め部材40は、第1及び第2掛止部21、31が、爪甲3の面と直交する共通直平面41内で、左右対称に幅方向右側、左側端縁2A、2Bに引掛けられた状態で、第1円弧状部23と第1フリーエンド部29を含むこれらの間及び第2円弧状部33と第2フリーエンド部39を含むこれらの間に巻き掛け可能とされた重度巻き爪の予備矯正用具10。【選択図】図1
