医用取石网篮扭转角传递性能测试装置的设计及应用  

Design and application of test device for torsion angle transmission performance of the medical stone basket

作　　者：张正堃 刘海志 罗姝月 管晓宁[1] 王璐[1] 林婧[1] ZHANG Zhengkun;LIU Haizhi;LUO Shuyue;GUAN Xiaoning;WANG Lu;LIN Jing(College of Textiles,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学纺织学院,上海201620

出　　处：《东华大学学报（自然科学版）》2023年第4期53-57,90,共6页Journal of Donghua University(Natural Science)

摘　　要：为定量表征医用取石网篮的扭转角传递性能,设计一种取石网篮扭转角传递性能测试的装置,该装置可在体外模拟网篮在人体腔道内的屈曲状态。利用该装置对伸直状态和屈曲状态下不同编织密度和长度的取石网篮进行扭转角传递性能测试,并引入扭转角传递系数进行定量表征。结果表明:屈曲状态会使网篮的扭转角传递性能明显降低,导丝编织密度为7个/cm的网篮导丝在伸直状态下的扭转角传递系数与导丝存在2处屈曲状态下相比减小了31%。在相同的屈曲状态下,网篮的扭转角传递性能与导丝的编织长度呈负相关,与编织密度呈正相关。该装置可实现精确测量与表征不同编织参数和测试状态的取石网篮的扭转角传递性能,可为取石网篮的临床应用和开发生产提供参考。To quantitatively characterize the torsion angle transmission performance of the medical stone basket,a device for testing the torsion angle transmission performance of the stone basket was designed,which can simulate the buckling state of the basket in the human body cavity in vitro.The device was used to test the torsion angle transmission performance of stone baskets with different weaving densities and lengths in the straight state and buckling state,and the torsion angle transmission coefficient was introduced for quantitative characterization.The results show that the buckling state will significantly reduce the torsional angle transmission performance of the basket.The torsional angle transmission coefficient of the guide wire of the basket with the braided density of 7 per centimeter in the straight state is reduced by 31%compared with the two buckling states.Under the same buckling state,the torsion angle transmission performance of the basket is negatively correlated with the braiding length of the guide wire and positively correlated with the braiding density.The device can accurately measure and characterize the torsion angle transmission performance of the stone basket with different weaving parameters and test states,and can provide a reference for the clinical application and development and production of the stone basket.

关 键 词：医用取石网篮 编织结构 力学性能 扭转角传递性能 测试装置 

分 类 号：R318.6[医药卫生—生物医学工程]