血管介入教学模拟系统的研制

The preparation of teaching simulation system of endovascular intervention

目的建立血管介入教学模拟系统,评价其在临床教学中的应用价值。方法以不同管径的玻璃管制成与人体相仿的血管模型。将不锈钢管切割、焊接成操作床支架及类C臂结构,与平板组装成操作床模块。固定摄像头,并与脚闸、计算机等组装成影像模块。将以上三大模块整合成血管介入模拟系统。利用该系统模拟临床血管介入基本操作。结果血管模型为等比例正常人体动脉血管。操作床模块可使血管模型向二维方向移动。影像模块可采集多种像素及不同格式的图片和多尺寸的动态影像,并具有与DSA的图像冻结功能完全相同的LIH功能,且能捕捉动态导管操作过程的任意瞬间的立体平面投影图像。利用该系统可模拟肝动脉插管术、颈动脉插管术及子宫动脉导管成襻术等血管介入的基本操作。结论该模拟系统可模拟多种血管介入的基本操作,并能阐述血管介入操作过程非直视与直视间的投影成像关系,对临床血管介入操作的教学具有很好的应用前景。

Objective To establish a teaching simulation system of endovascular intervention and to evaluate its application in clinical teaching practice.Methods The vascular model,which had quite similar diameter and length to that of human arteries,was prepared with glass tubes of different diameters.Stainless steel tubes were cut and welded to manufacture the brackets of an operation bed and a C-arm,and then the above parts together with flat were assembled into the operation bed module.Fixed camera,computer and footswitch were assembled into the image module.The above three modules were integrated into the teaching simulation system of endovascular intervention.With the help of this system,the principal endovascular intervention manipulations were imitatively exercised.Results The vascular model had the same proportions as in normal human subjects.The operation bed module could be moved in two dimensions.The image module could capture multiple pixels and differently formatted images as well as dynamic images in different sizes.Also,this system carried the image-frozen function,which was just the same as last image hold function of DSA.This simulation system could imitate the basic manipulations of many kinds of endovascular interventions,such as the hepatic artery catheterization,carotid artery catheterization,the performing of looping-technique in uterine artery,etc.Conclusion The simulation system can imitate many principal endovascular manipulations,and can distinctly and directly display the relationship of the vascular anatomy and interventional instruments with their imaging shadows.Therefore,this simulation system has a promising prospect of being able to be used in the clinical teaching program concerning vascular interventional manipulations.