Von Frey纖維絲測(cè)痛儀Von Frey Filaments vo...

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機(jī)械痛閾觸覺(jué)閾測(cè)量套裝Von Frey Hairs test纖毛機(jī)

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USA

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上海市 上海市

更新時(shí)間
2024-05-17 14:48:31

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    Von Frey機(jī)械痛閾、觸覺(jué)閾測(cè)量套裝Von Frey Hairs test（Von Frey filaments纖毛機(jī)械刺激針）適用于對(duì)小鼠、大鼠進(jìn)行觸覺(jué)反應(yīng)測(cè)量。 
     

    纖毛機(jī)械刺激針（Von Frey Hairs test）是主要由為數(shù)20的Von Frey Hairs 纖毛機(jī)械刺激針組成，觸覺(jué)測(cè)量纖維絲的力度為0.008克-300克，是一種經(jīng)典且無(wú)損傷的評(píng)估皮膚觸覺(jué)靈敏度機(jī)械痛閾、觸覺(jué)閾測(cè)量的工具。該Von Frey Hairs 纖毛機(jī)械刺激針同時(shí)可配套使用鑿孔金屬工作臺(tái)（34 x 14 英寸），該工作臺(tái)上布置了一張進(jìn)行Von Frey Hairs 纖毛機(jī)械刺激針的網(wǎng)篩，觸覺(jué)測(cè)量網(wǎng)篩上的篩孔是由激光切割而成，孔的尺寸為5X5毫米，孔與孔間的間距大約是1毫米，這對(duì)于受試觸覺(jué)測(cè)量的動(dòng)物來(lái)說(shuō)一個(gè)舒服的環(huán)境，且有利于實(shí)驗(yàn)人員觀察受試觸覺(jué)測(cè)試動(dòng)物的爪。此外，網(wǎng)篩上涂有特殊的涂料，非常方便實(shí)驗(yàn)人員清理實(shí)驗(yàn)過(guò)程中產(chǎn)生的污垢。 
     

    Von Frey Hairs 纖毛機(jī)械刺激針主要用于評(píng)估皮膚的觸覺(jué)反應(yīng)測(cè)試，是非常受歡迎的非侵入式實(shí)驗(yàn)器材。Von Frey Hairs 纖毛機(jī)械刺激針可提供0.008g-300g的觸覺(jué)測(cè)試刺激力。Von Frey Hairs 纖毛機(jī)械刺激針的粗細(xì)及伸出長(zhǎng)度決定提供觸覺(jué)測(cè)試刺激力的大小。實(shí)驗(yàn)時(shí)，根據(jù)實(shí)際情況選定粗細(xì)當(dāng)?shù)玫?span style="line-height: 24px; text-align: justify; ">Von Frey Hairs 纖毛機(jī)械刺激針，調(diào)節(jié)適當(dāng)Von Frey Hairs 纖毛機(jī)械刺激針的伸出長(zhǎng)度，垂直地刺激觸覺(jué)測(cè)試皮膚，可通過(guò)調(diào)節(jié)觸覺(jué)測(cè)量纖維絲的伸長(zhǎng)、更換Von Frey Hairs 纖毛機(jī)械刺激針調(diào)整刺激力大小，直到Von Frey Hairs 纖毛機(jī)械刺激針彎曲。當(dāng)嚙齒類(lèi)動(dòng)物得爪受到一個(gè)機(jī)械觸覺(jué)反應(yīng)刺激，它們會(huì)縮回反射。該觸覺(jué)測(cè)試可應(yīng)用于大、小鼠的足底觸覺(jué)反應(yīng)狀況。

     

    另外，可選觸覺(jué)測(cè)量專(zhuān)配鑿的孔工作臺(tái)，其網(wǎng)篩孔是利用激光切沖而成的方形孔，尺寸為5×5mm2 ，觸覺(jué)測(cè)量孔間距約為1mm，這對(duì)受試動(dòng)物而言是一個(gè)舒適的環(huán)境，也便于操作人員觀察動(dòng)物的足底區(qū)域。該觸覺(jué)測(cè)量鑿孔臺(tái)經(jīng)涂層處理，便于清潔且不易被腐蝕。 
     

     

    Touch Test
     
    The Semmes-Weinstein monofilaments provide an approximate logarithmic scale of actual force and a linear scale of perceived intensity. They have a long history of effective use in clinical settings and can be used to diagnose pathologies of hyper- or hypo-aesthesia. Subsets within the set of 20 probes distinguish pathologies on different parts of the body (foot hand lip cheeketc.).
     
    Semmes-Weinstein Von Frey Aesthesiometer for touch assessment 
     
     
    Features
     
      Set of 20 monofilaments based on the Semmes-Weinstein monofilament set
      Features retractable filaments to protect the filament
      Allows the researcher to carry a few in a pocket
     
    The Semmes-Weinstein monofilaments provide an approximate logarithmic scale of actual force and a linear scale of perceived intensity. They have a long history of effective use in clinical settings and can be used to diagnose pathologies of hyper- or hypo-aesthesia. Subsets within the set of 20 probes distinguish pathologies on different parts of the body (foot hand lip cheeketc.).
     
    Operating Principle When the tip of a fiber of given length and diameter is pressed against the skin at right angles the force of application increases as long as the researcher continues to advance the probe until the fiber bends. After the fiber bends continued advance creates more bend but not more force of application. This makes it possible for the researcher using a hand-held probe to apply a reproducible force within a wide tolerance to the skin surface.
     
    Pre-Clinical Use Rodents exhibit a paw withdrawal reflex when the paw is unexpectedly touched. The Touch Test? Sensory Evaluator can be used on the Plantar surfaces of the foot of a rat or mouse. The animal indicates sensation by pulling back its paw. Individual filaments available.
     



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