breech loader

例句：

1. 1. The surgeon used a breech loader to insert the catheter into the patient's chest.
   外科医生使用插管器将导管插入病人的胸腔。
2. 2. The nurse carefully operated the breech loader to remove the foreign body from the patient's throat.
   护士小心地操作插管器，将异物从病人喉咙中取出。
3. 3. The doctor used the breech loader to perform a minor surgery on the patient's knee.
   医生使用插管器对病人的膝盖进行了一次小手术。