脊髓损伤（SCI）研究的利器 

    (MASCIS Impactor,NYU Impactor)脊髓损伤撞击器是设计用来为大小鼠施加可重复的标准脊椎撞击。已经开发应用超过十年，它是啮齿类动物脊髓损伤模型的一部分，已经有超过100个实验室在使用它。另外，最近超过50%的关于脊髓损伤研究文献使用的是MASCIS撞击器。大部分仪器的建议操作程序是源自于Multicenter Animal Spinal Cord Injury Study(MASCIS)模型和实际工作经验。
    现有MASCIS撞击器现在是它的第三代产品，与以前的产品相比已经有很多方面的改进提高。现有两个型号的撞击器。电脑版撞击器(Model I)可以记录数据。同时也可以使用基本版撞击器(The Rutgers Impactor,Model II)仅进行撞击， 不记录数据。
    电脑版撞击器可以精确测量一个10克的小棒的运动情况，这个小棒从12.5mm，25mm，50mm高处落到术后暴露的脊髓T9-10处。另外设备还可以测量撞击位置脊柱的运动。显示坠落小棒的轨迹，并测量撞击速度（ImpV），脊髓压缩距离（Cd），脊髓压缩时间(Ct)，脊髓压缩率(Cr)。这些撞击参数本身是相关的，同时与其它的脊髓损伤数值如组织Na，K浓度，运动恢复locomotor recovery(BBB 评分)也是相关的。
    大小鼠的撞击都需要一个固定系统(Clamping systems)。同时还需要一个CS-tie。 

Model II

Model I

参考文献
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