An interspinous process distraction device is disclosed, including an abutting member, two supporting members, and two fixing members, which are separated from each other and capable of being configured to an assembly. The abutting member has two ends and a central region for abutting upon a spinous of a vertebra. The supporting member is connected to the end of the abutting member and has a terminal end away from the abutting member. The fixing member has a connecting end for connecting with the terminal end of the supporting member and a fixing end for fixing on a vertebral arch of another vertebra. The interspinous process distraction device disclosed herein provides a supporting force between the vertebra and the other vertebra.一種棘突間撐開裝置,包括相互獨立並可結合配置之一頂靠件、二支撐件及二固定件。該頂靠件具有兩端及用於頂靠至一椎骨的棘突之中間區域,該支撐件連接於該頂靠件之該端並具有遠離該頂靠件之一末端,該固定件具有連接該支撐件的該末端之一連接端及固定至另一椎骨的椎弓之一固定端。藉此,本案之棘突間撐開裝置於安裝至該椎骨與該另一椎骨時提供支撐力。2‧‧‧頂靠件21‧‧‧端22‧‧‧中間區域3‧‧‧支撐件31‧‧‧彎曲段32‧‧‧直線段33‧‧‧末端4‧‧‧固定件41‧‧‧連接端42‧‧‧固定端
