external anditory canal retractor

例句：

1. 1. Theexternal cannula retractor was used to remove the foreign body from the patient's ear.
   使用外部导管拉出器将异物从病人的耳朵中取出。
2. 2. During surgery, the external cannula retractor was used to keep the surgical site clean and dry.
   在手术过程中，外部导管拉出器被用来保持手术部位清洁和干燥。
3. 3.The external cannula retractor was a critical tool in performing minimally invasive procedures.
   外部导管拉出器是执行微创手术的关键工具。