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Von Frey Hair纤毛机械刺激针用来测量动物的触觉阈疼痛阈机械痛阈测量仪,Von Frey Hairs是由20根Von Frey纤毛机械刺激针组成,英文中称为Von Frey Hairs Von Frey filaments 或Semmes-Weinstein monofilaments,Von Frey Hair 纤毛机械刺激针主要用于评估皮肤的触觉,是非常受欢迎的非侵入式实验器材。它可提供0.008g-300g的Von Frey Hairs刺激力。Von Frey Hairs尼龙丝的粗细及伸出长度决定提供刺激力的大小。实验时,根据实际情况选定粗细当得的 Von Frey Hairs纤毛机械刺激针,调节适当Von Frey Hair纤毛机械刺激针的伸出长度,垂直地刺激皮肤,可通过调节伸长、更换Von Frey Hair 纤毛机械刺激针 调整刺激力大小,直到 Von Frey Hair 纤毛机械刺激针 弯曲。
型号:NC12775 现货供应,敬请来电咨询
Von Frey纤维丝在小动物触觉阈值测试中的应用:
Von Frey纤毛机械刺激针可提供0.008g-300g的触觉刺激力。(进行von Frey test使用方便,可对多种动物进行定量的机械痛阈或触觉阈测量,敬请来电咨询)
Von Frey Hairs纤毛机械刺激针尼龙丝的粗细及伸出长度决定提供触觉von Frey test刺激力的大小。实验时,根据实际情况选定粗细当得的触觉测试Von Frey Hairs纤毛机械刺激针,调节适当的伸出长度,垂直地刺激皮肤,可通过调节伸长、更换触觉尼龙丝调整刺激力大小,直到触觉测量尼龙丝弯曲。当啮齿类动物得爪受到一个机械痛阈或触觉阈,它们会缩回反射。该触觉测试可应用于大、小鼠的足底机械痛阈或触觉阈测量。
另外: Von Frey Hairs纤毛机械刺激针使用时可选配凿孔工作台,其触觉测量网筛孔是利用激光切冲而成的方形孔,尺寸为5×5mm2 ,触觉测量孔间距约为1mm,这对受试动物而言是一个舒适的环境,也便于操作人员观察动物的足底触觉感应区域。该凿孔台经涂层处理,便于清洁且不易被腐蚀。
可配合测试支架和大小鼠测试笼,对动物足底进行测试:
也可对人体或动物的其他部位的触觉反应,进行测试:
测痛实验大鼠固定器
可用于大鼠的面部、背部、腹部的刺痛实验;
可根据老鼠的体重订做合适的尺寸;
Von Frey纤维丝在人体手部、足部触觉测试中的应用:
Von Frey纤毛机械刺激针也可叫做Touch-Test单丝测试盒、Semmes-Weinstein触觉测量尼龙丝,能测试和评估感觉水平,每个Touch-Test™单丝测试笔被单独校准,力量值在5%的标准偏差范围内,以此可测试感觉水平。
利用Touch-Test™单丝感觉测试套装来测试感觉水平,获取客观数据,可以准确报告正在减少或回复的感觉状态;
测试根据预先设定的力的5%的标准偏差进行的;
当达到峰值力阈值时,单丝测试笔的单丝呈弯曲形状;
独特的手柄设计使Touch-Test™单丝测试笔可以轻松地打开90°角进行测试;关闭时,测试笔可以被安全地放在口袋或手提箱中,以确保可以在不使用时保护单丝;
单丝测试笔手柄上的手指凹痕提供了牢固且舒适的握持手感;
单丝测试笔手柄上都标有相应的颜色编码的压力水平;
测试结果可以记录在另行出售的手部或脚部筛查表格(NC12750-1和NC12749)上;
有5件套手部套件装,6件套足部套件装和20件套全套套件装可供选择;
每种规格的套件都有保护套,带使用说明。;
用于替换的5.07(10g)的单丝测试笔可单独出售,5.07(10g)表明足部的保护性感觉丧失;
不同颜色代码代表不同的压力级别,规格及所代表的的力量分别为:
1.65(0.008克)、2.36(0.02克)、2.44(0.04克)、2.83(0.07克)、3.22(0.16克)、3.61(0.4克)、3.84(0.6克)、4.08(1.0克)、4.17(1.4克)、4.31(2.0克)、4.56(4.0克)、4.74(6.0克)、4.93(8.0克)、5.07(10.0克)、5.18(15.0克)、5.46(26.0克)、5.88(60.0克)、6.10(100.0克)、6.45(180.0克)、6.65(300.0克)。
正常为1.65~2.83(Normal)
轻触觉减退为3.22~3.61(Diminished Light Touch)
保护性感觉减退为3.84~4.31(Diminished Protective Sensation)
保护性感觉丧失为4.56~6.45(Diminished Protective Sensation)
6.65用于深层感觉检测(Deep Pressure Sensation Only)
有手部感觉测试型、足部感觉测试型和全规格测试型可供选择:
手部套件包含:2.83, 3.61, 4.31, 4.56 ,6.65 五种单丝测试;
足部套件包含:2.83, 3.61, 4.31, 4.56, 5.07 , 6.65六种单丝测试;
全规格套件包含:所有二十种单丝测试---推荐配置
产品型号如下,敬请来电订购:
NC12772 Touch-Test 单丝测试套件, 手部
NC12773 Touch-Test 单丝测试套件, 足部
NC12775-99 Touch-Test 单丝测试套件, 全套20件---推荐
电子式测痛仪应用于人体研究时候,可实时读取0-800g的具体数据:
参考文献
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