Von Frey测痛炎症_触觉测量套件_全国价_详细资料

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Von Frey (with grids)测痛/炎症

Von Frey Hairs 触觉测量套件

Touch test sensory probe/evaluators

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触觉测量套件是由20根尼龙纤维丝组成，英文中称为 Von Frey filaments 或Semmes-Weinstein monofilaments，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的刺激力。尼龙丝的粗细及伸出长度决定提供刺激力的大小。实验时，根据实际情况选定一种尼龙丝，调节适当的伸出长度，垂直地刺激皮肤，通过调节伸长、更换尼龙丝可调整刺激力的大小。尼龙丝弯曲以后，持续的推进会导致更多的弯曲，但是刺激力不会再增加。当啮齿类动物得爪受到足够的机械刺激后会有缩回反射，反复调整刺激力的大小，选定适当的刺激力。Von Frey 触觉测试不仅可应用于大、小鼠的足底，在临床上也广泛使用，可用于触觉测试及高知觉和低知觉诊断。

另外，可选配凿孔工作台，其网筛孔是利用激光切冲而成的方形孔，尺寸为5×5mm² ，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区域。该凿孔台经涂层处理，便于清洁且不易被腐蚀。

Color Evaluator Size Catalogue item Number Target Force (grams) Target Force* (milliNewtons)
Theoretical

Pressure

Grams/Sq. mm
Hand & Dorsal Foot Thresholds Plantar Threshold

Green 1.65 514001 0.008 0.08 2.53 normal normal

2.36 514002 0.02 0.20 4.39 normal normal

2.44 514003 0.04 0.40 4.93 normal normal

2.83 514004 0.07 0.70 5.53 normal normal

Blue 3.22 514005 0.16 1.6 8.77 Diminished Light Touch normal

3.61 514006 0.40 3.9 16.1 Diminished Light Touch Diminished Light Touch

Purple 3.84 514007 0.60 5.9 18.4 Diminished Light Touch Diminished Light Touch

4.08 514008 1.0 9.8 24.4 Diminished Light Touch Diminished Light Touch

4.17 514009 1.4 13.7 27.9 Diminished Light Touch Diminished Light Touch

4.31 514010 2.0 19.6 27.4 Diminished Light Touch Diminished Light Touch

Red 4.56 514011 4.0 39.2 40.3 Loss of Protec-tive Sensation Diminished Light Touch

4.74 514012 6.0 58.8 52.6 Loss of Protec-tive Sensation Diminished Light Touch

4.93 514013 8.0 78.4 61.7 Loss of Protec-tive Sensation Diminished Light Touch

5.07 514014 10 98.0 68.3 Loss of Protec-tive Sensation Loss of Protective Sensation

5.18 514015 15 147 82.0 Loss of Protec-tive Sensation Loss of Protective Sensation

5.46 514016 26 255 106 Loss of Protec-tive Sensation Loss of Protective Sensation

5.88 514017 60 588 141 Loss of Protec-tive Sensation Loss of Protective Sensation

6.10 514018 100 980 193 Loss of Protec-tive Sensation Loss of Protective Sensation

6.45 514019 180 1760 222 Loss of Protec-tive Sensation Loss of Protective Sensation

Orange 6.65 514020 300 2940 292 Deep Protective Sensation Deep Pressure Sensation

*calculated rounded numbers (conversion factor 9.80665)

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Color	Evaluator Size	Catalogue item Number	Target Force (grams)	*Target Force (milliNewtons)**	Theoretical Pressure Grams/Sq. mm	Hand & Dorsal Foot Thresholds	Plantar Threshold
Green	1.65	514001	0.008	0.08	2.53	normal	normal
	2.36	514002	0.02	0.20	4.39	normal	normal
	2.44	514003	0.04	0.40	4.93	normal	normal
	2.83	514004	0.07	0.70	5.53	normal	normal
Blue	3.22	514005	0.16	1.6	8.77	Diminished Light Touch	normal
Blue	3.61	514006	0.40	3.9	16.1	Diminished Light Touch	Diminished Light Touch
Purple	3.84	514007	0.60	5.9	18.4	Diminished Light Touch	Diminished Light Touch
	4.08	514008	1.0	9.8	24.4	Diminished Light Touch	Diminished Light Touch
	4.17	514009	1.4	13.7	27.9	Diminished Light Touch	Diminished Light Touch
	4.31	514010	2.0	19.6	27.4	Diminished Light Touch	Diminished Light Touch
Red	4.56	514011	4.0	39.2	40.3	Loss of Protec-tive Sensation	Diminished Light Touch
	4.74	514012	6.0	58.8	52.6	Loss of Protec-tive Sensation	Diminished Light Touch
	4.93	514013	8.0	78.4	61.7	Loss of Protec-tive Sensation	Diminished Light Touch
	5.07	514014	10	98.0	68.3	Loss of Protec-tive Sensation	Loss of Protective Sensation
	5.18	514015	15	147	82.0	Loss of Protec-tive Sensation	Loss of Protective Sensation
	5.46	514016	26	255	106	Loss of Protec-tive Sensation	Loss of Protective Sensation
	5.88	514017	60	588	141	Loss of Protec-tive Sensation	Loss of Protective Sensation
	6.10	514018	100	980	193	Loss of Protec-tive Sensation	Loss of Protective Sensation
	6.45	514019	180	1760	222	Loss of Protec-tive Sensation	Loss of Protective Sensation
Orange	6.65	514020	300	2940	292	Deep Protective Sensation	Deep Pressure Sensation