電子測痛儀也叫做電子觸覺測試儀，用于對大鼠、小鼠足部進行輕觸，來測量老鼠的機械痛閾值或觸覺閾值。
老鼠感覺到爪子被刺激時，會做出縮足反應(yīng)。電子觸覺測試儀使用測試探針對老鼠足底進行觸覺刺激，力度由小到大逐漸增加力度，通過判斷老鼠的縮足反應(yīng)，來采集和分析老鼠的觸覺閾值。
纖毛機械刺激絲套裝。但是纖毛機械刺激絲的方法非常耗時耗力，一個測試實驗需要使用多個不同纖維絲進行多次和反復(fù)足底刺激。
Von Frey電子測痛儀的主要規(guī)格
· 提供三種測試量程90g、800g和1000g；
· 支持多個用戶用一個個體支持做多個研究；
· 有剛性探針和軟絲可供選擇；
· 剛性測試探針可用率評估機械痛（閾值）
· 軟性探針可用來測試感官閾值；
主要型號和配置
· 2390型測試量程90g，精度0.01g
· 2091型測試量程800g，精度0.1g
· 23931型測試量程1000g，精度0.1g
· 2392型包含90g測試量程的2390測試儀和1套Supertips測試軟絲
· 2393型包含800g測試量程的2091型測試儀和1套Supertips測試軟絲
· 115VFHS15件套Supertips測試軟絲
· 110RT標(biāo)準(zhǔn)測試探頭
電子觸覺測試儀可用來替代傳統(tǒng)的 Semmes-Weinstein（Von Frey Hairs）纖毛機械刺激針，可直接測得動物的機械痛閾和觸覺閾測量，不需要進行反復(fù)的測試和繁雜的計算。設(shè)備輕巧易用，測量精確。
電子觸覺測試儀相比傳統(tǒng)方法的優(yōu)勢特點
· 電子觸覺測試儀，一個測試實驗只需要進行一次足底刺激即可得到準(zhǔn)確的結(jié)果；
· 數(shù)據(jù)可直接用于統(tǒng)計分析，能夠節(jié)省很多的精力和時間；
· 測量精度高，測試力度能夠讀取到1000g以內(nèi)的具體數(shù)值，精度可達0.1g；
· 不需要進行繁雜的統(tǒng)計和計算；
· 使用一個標(biāo)準(zhǔn)直徑的剛性探針進行測試，能夠避免不同力度纖維絲具有不同的直徑而產(chǎn)生的觸覺誤差；
· 能夠避免因為反復(fù)多次的測試對動物耐受力的影響，減小測試誤差；
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人體觸覺測試 |
小鼠足底觸覺測試 |
Electric Von Frey電子測痛儀的主要參數(shù)
· 配備通用的接頭，測試手柄可插入三種不同規(guī)格的探針
· 標(biāo)配LCD顯示屏(Floating or last max. & minimum)
· 剛性探頭能達800Gr；
· 可選配Supertips軟性測試絲，規(guī)格15-65Gr；
· 探針兼容MRI環(huán)境；
· 電子微處理器兼容0.1Gr插入式探針；
· 測試絲耐潮，耐溫；
· 可選配模擬輸出線；
· 可根據(jù)實際需要定制探針；
· 具有測量、存儲和顯示功能，免除了傳統(tǒng)纖維絲的繁雜計算；
· 可以預(yù)設(shè)和選擇大限額力度，精度1g，當(dāng)達到預(yù)設(shè)值時，警示燈會亮；
· 實驗簡便安裝在測試手柄上的探針對準(zhǔn)實驗對象，均勻施力，儀器能快速的顯示結(jié)果并記錄測試值；
· 數(shù)據(jù)可實時記錄；
· 所有型號的電子測痛儀已在出廠前校準(zhǔn)完畢，不再需要額外的校準(zhǔn)設(shè)備；
大鼠小鼠足底觸覺測試籠
大小鼠足底測試平臺，也叫做老鼠足底觸覺測試鑿孔臺，主要用于配合Von Frey電子測痛儀，對大鼠、小鼠進行足底觸覺測試。
足底測試平臺由三部分組成鑿孔臺、測試鼠籠和45°鏡面（額外選配）
Supertips測試軟絲
Supertips采用技術(shù)，有15根測試軟絲組成。所有15根測試絲的直徑的都在0.8mm，受測的接觸面積具有高度的均一性。配合電子測痛儀使用，用于觸覺閾值（Sensory Threshold）的測量。
Supertips測試絲采用特殊PP材質(zhì)，受溫度、濕度影響小，也有利于減少實驗誤差。
測試結(jié)果準(zhǔn)確性高，可以直接用于評估痛閾，而不需復(fù)雜的計算。
部分參考文獻
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