Nelaton's catheter

例句：

1. 1.The surgeon used a Nelaton's catheter to remove the tumor.
   外科医生使用纳勒顿导管来移除肿瘤。
2. 2. The patient was given a Nelaton's catheter for pain relief.
   病人被给予一个纳勒顿导管以缓解疼痛。
3. 3. The procedure required a Nelaton's catheter to be inserted into the patient's bloodstream.
   该程序需要将纳勒顿导管插入患者的血管中。