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About the product
Characteristic
Aluminum Alloy
Wuhu
634
Medical teaching instrument
Yi Tai Yongfeng
Medical treatment
128HZ-2048HZ
No
2048
Yes
552
No
Description
提供的频率音叉
音叉检查法是辨别耳聋性质最常用的听力检查法;
常用六支一组音叉,其振动频率为128、256、512、1024,2048HZ
检查时注意:①应击动音叉臂的上1/3处;
②敲击力量应一致,不可用力过猛或敲击台桌硬物,以免产生泛音;
③检查气导时应把振动的音叉上1/3的双臂平面与外耳道纵轴一致,
并同外耳道口同高,距外耳道口约1cm左右;
④检查骨导时则把柄底置于颅面;
⑤振动的音叉不可触及周围任何物体;
Characters
Aluminum Alloy
Wuhu
634
Medical teaching instrument
Description
提供的频率音叉
音叉检查法是辨别耳聋性质最常用的听力检查法;
常用六支一组音叉,其振动频率为128、256、512、1024,2048HZ
检查时注意:①应击动音叉臂的上1/3处;
②敲击力量应一致,不可用力过猛或敲击台桌硬物,以免产生泛音;
③检查气导时应把振动的音叉上1/3的双臂平面与外耳道纵轴一致,
并同外耳道口同高,距外耳道口约1cm左右;
④检查骨导时则把柄底置于颅面;
⑤振动的音叉不可触及周围任何物体;