The portion of the machine over or near the operative field is covered with a sterile drape and care is taken throughout the entire duration of the case to ensure that sterility is maintained.

• 使用无菌的布帘覆盖机器靠近手术野或在术野上方的部分，并且在术中始终对其操作保持关注，以保证手术的无菌操作。