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为制造插入式耳塞提供数据,我们用乳化石膏灌注成形法,造取外耳道模型,测量了500名男性成人外耳道口部与峡部的尺寸。外耳道口部多呈椭圆形,上下径为6.1～13.2mm,平均为9.71±4.09mm;前后径为4.6～10.6mm,平均为7.48±1.06mm。外耳道峡部形状较不规则,但渐趋圆形,上下径为5.0～11.2mm,平均7.76±1.13mm前后径为3.9～9.8mm,平均为6.74±1.02mm。外耳道口部与峡部的距离,以5～8mm者居多,占被测耳数的88.2％。由外耳道口外耳屏处向峡部走向有一水平前突角,其夹角多为135～145°。个人左右耳口径略有差异,但群体观察两耳数值基本一致。
To provide data for a plugged earplug, we model the external auditory meatus using an emulsified gypsum perfusion method and measured the size of the mouth and isthmus in 500 male adult external auditory meatus. Outer auditory canal mostly elliptical mouth, the diameter of 6.1 ~ 13.2mm, with an average of 9.71 ± 4.09mm; anteroposterior diameter of 4.6 ~ 10.6mm, with an average of 7.48 ± 1.06mm. The shape of isthmus of external auditory canal was irregular, but gradually rounded. The diameter of upper and lower is 5.0 ~ 11.2mm, average 7.76 ± 1.13mm anteroposterior diameter of 3.9 ~ 9.8mm, with an average of 6.74 ± 1.02mm. The distance between external ear canal mouth and isthmus is mostly 5 ~ 8mm, accounting for 88.2% of measured ear number. From the external auditory meatus to the isthmus at the ecthymic Department to a horizontal bursting angle, the angle between mostly 135 ~ 145 °. There is a slight difference in the caliber of the left and right ears between individuals, but the values of the two ears in the group are basically the same.