适用于磁压榨吻合的平移钳的设计

目的:提出了磁压榨吻合操作中可用于磁体夹持固定的平移钳的结构设计方案。方法:分析本团队多种原创性磁压榨吻合技术操作中存在的缺陷和不足,认为目前磁压榨吻合操作中依靠术者徒手控制或利用现有血管钳对磁体进行夹持和固定,是造成操作中诸多不便的主要原因。从力学角度分析了常规血管钳夹持磁体易导致磁体滑脱的原因,指出设计加工磁吻合专用钳是解决目前磁吻合操作不便的有效措施。在此基础上提出了利用平移钳来固定磁体的结构设计方案,并从力学角度进行了受力分析,设计出了用于磁压榨吻合操作中磁体夹持固定的平移钳。结果:平移钳的结构设计能够稳定夹持磁体,避免磁体滑脱;同时,借助齿轮传动结构控制钳头的平行移动能够更好地控制磁体的精准对吸和分离,可进一步简化操作,避免副损伤,节省手术操作时间。结论:平移钳能满足多种形状及大小的磁体的夹持和固定,可有效控制磁体的吸合与分离,极大地方便操作。该平移钳加工简单,使用方便,有助于推动磁压榨吻合技术在临床广泛开展。

The Design of Parallel Moving Clamp for Magnetic Compression Anastomosis

ABSTRACT Objective: The structural design scheme of the parallel moving clamp which can be used for the clamping and fixing of the magnet in the magnetic pressing anastomosis operation is proposed. Methods: The shortcomings and deficiencies of the original mag- netic compression anastomosis technology of our team were analyzed, the magnets that magnetic compression anastomosis operation need by hand alone or by using the existing vascular forceps clamping and fixing, and it is the main reason of inconvenience in operation. From the mechanics point of view, analyzed the reason of the conventional vascular forceps hold the magnet can lead to the slippage of the magnet. And pointed out that the design and processing of magnetic anastomosis dedicated forceps is an effective measure to solve the problem of the inconvenience during magnetic anastomosis. On this basis, the structural design scheme of using the parallel moving clamp to fix the magnet is proposed. The mechanics analysis of the magnet is made. The parallel moving clamp with the magnets for clamping and fixing in the magnetic compression anastomosis are designed. Results: The structural design of the parallel moving clamp can stably clamp the magnet and prevent the magnet from slipping off. Meanwhile, the parallel movement of the clamp head can be con- trolled by the gear transmission structure to better control the precise attract and separation of the magnet, thereby further simplifying the operation, avoiding the unnecessary damage and saving operation time. Conclusion: The parallel moving clamp can be a variety of shapes and sizes to meet the magnet clamping and fixing, it can effectively control the magnet pull and separation, facilitate the operation. The parallel moving clamp processing simple, easy to use, and will promote magnetic compression anastomosis technology widely car- ried out in the clinic.