PROBLEM TO BE SOLVED: To provide a spinous process implant that has a simple structure and shape, facilitates mounting work, and can install a spacer between spinous processes.SOLUTION: A spinous process implant includes a first plate 10 and a second plate 20 abutted by two spinous processes adjacent in the vertical direction, three sets of bolts 31A to 31C and nuts 32A to 32C, and one substantially cylindrical washer 40. Each plate 10, 20 has first through holes 11, 21 corresponding to front one spinous process and making the bolt 31A fitted to a hole formed in the spinous process penetrate therethrough, second through holes 12, 22 corresponding to the other spinous process and making the bolt 31B fitted to the hole formed in the other spinous process penetrate therethrough, and third through holes 13, 23 corresponding to a portion between two spinous processes. The third through hole is provided at a position spaced apart from a straight line connecting between a center of the first through hole and a center of the second through hole. The washer 40 is clamped between the plate 10 and the plate 20, and is fixed by a bolt 31C fitted in the third through hole.COPYRIGHT: (C)2015,JPO&INPIT【課題】構造及び形状がシンプルであり、装着作業が容易であり、且つ、棘突起の間にスペーサを装着可能な棘突起用インプラントを提供する。【解決手段】上下方向に隣接する2つの棘突起に当接される第1プレート10及び第2プレート20と、3組のボルト31A~31C及びナット32A~32Cと、1つの略円筒状のワッシャ40を備え、各プレート10,20は、前一方の棘突起に対応し、該棘突起に形成される穴に嵌装されるボルト31Aを貫通させる第1貫通穴11,21と、他方の棘突起に対応し、該他方の棘突起に形成される穴に嵌装されるボルト31Bを貫通させる第2貫通穴12,22と、2つの棘突起の間の部分に対応する第3貫通穴13,23を有し、第3貫通穴は、第1貫通穴の中心と第2貫通穴の中心を結ぶ直線から離れた位置に設けられており、ワッシャ40はプレート10と20の間に挟持され、第3貫通穴に嵌装されるボルト31Cで固定される。【選択図】図1
