tilting-disk prosthetic valve

例句：

1. 1.The patient's condition improved significantly after the operation.
   手术后，患者的病情显著改善。
2. 2. The surgeon performed a successful mitral valve replacement surgery.
   外科医生成功地进行了二尖瓣置换手术。
3. 3.The tilting-disk prosthetic valve was designed to improve blood flow and reduce the risk of complications.
   倾斜盘式人工瓣膜的设计旨在改善血流并减少并发症的风险。