目的 对本研究团队之前设计的用于磁压榨直肠阴道瘘闭合修补装置进行改良设计。方法 分析原有磁压榨直肠阴道 瘘闭合修补装置的缺陷，提出了针孔固定的结构方案，并设计了用于磁压榨直肠阴道瘘闭合修补的磁吻合钳。结果 针孔结 构的设计能够有效防止磁体滑脱，磁吻合钳的孔杆结构能够对吻合磁体起到固定作用，并且有利于吻合磁体的放置。结论 磁压榨直肠阴道瘘闭合修补装置的改良设计方案可行，有利于吻合操作。

Objective To perform an improved design of the rectovaginal fistula repair device based on magnetic compression technique. Methods The defects of the original rectovaginal fistula repair device based on magnetic compression were analyzed, a pinhole fixed structure scheme was put forward, and a magnetic anastomosis forceps for magnetic closure of rectovaginal fistula was designed. Results The design of the pinhole structure could effectively prevent the magnet from slipping off. The structure of the magnetic rod of the magnetic anastomosis clamp could play a role in fixing the anastomotic magnet and was favorable for placing the anomaly magnet. Conclusion The improved design of the rectovaginal fistula repair device based on magnetic compression is feasible and is beneficial to the anastomosis operation.