名词
中文翻译：扩张器
同义词：
['expander', 'dilator']
例句：
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1. The surgeon used a dilator conchae to widen the patient's throat.
外科医生使用扩张器来扩大患者的喉咙。
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2. The dilator conchae was inserted into the patient's ear canal to relieve pressure.
扩张器被插入患者的耳道以缓解压力。
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3. The dilator conchae was removed after the surgery to prevent infection.
手术结束后，取出扩张器以防止感染。