PROBLEM TO BE SOLVED: To provide a vertebra fixing plate device that can bridge and surely fix multiple spinous processes along a curve shape of vertebral spinous processes, according to a degree of deformity and/or curve of the vertebra.SOLUTION: A device fixes spinous processes by: screwing paired plates 2 and 3 having multiple apertures 4 with a bolt 7 to be inserted into at least two apertures 4 and with a nut 8 for fitting the bolt 7 and fixing the plates 2 and 3 on right and left sides of the vertebral spinous processes so as to face each other. The paired plates 2 and 3 respectively have multiple mountain parts 5 with acute-angled tops and flat valley parts 6 that are formed alternately on their sides facing the vertebral spinous processes, form a shape curving in a longitudinal direction and are formed in an approximately arc shape in plane view. With respect to the paired plates 2 and 3, a curvature radius is 60 to 180 mm and a central angle of the arc is 30 to 60°.COPYRIGHT: (C)2014,JPO&INPIT【課題】脊椎の変形・弯曲の程度に応じ、脊椎棘突起の弯曲形状に沿って複数の棘突起を架橋でき、確実に固定できる脊椎固定プレート装置を提供する。【解決手段】複数個の開孔4を有する一対のプレート2、3を、少なくとも2つの開孔4に挿通するボルト7及びボルト7を嵌合するナット8によってネジ締結し、脊椎棘突起の左右に対面するように止めて棘突起を固定する装置である。一対のプレート2,3の脊椎棘突起と対面する側には、鋭角な頂辺を有する山部5と平坦な谷部6が交互に複数形成されており、一対のプレート2、3が長手方向に弯曲した形状を成し、平面視で略円弧状に形成され、曲率半径が60~180mmであり、円弧の中心角が30~60°である。【選択図】図1
