CT引导下穿刺定位装置的设计

Design of CT-guided puncture positioning device

目的:设计一种CT引导下的穿刺定位装置,缩短穿刺时间,提高穿刺的准确性。方法:该装置利用简单的平面几何原理实现复杂的三维立体位置的定位。整个装置由定位器、固定装置以及穿刺针进针方向引导装置构成。采用透明塑料制作定位器及穿刺针进针方向引导装置,采用弹性布料制作固定装置。结果:利用该装置穿刺时的穿刺时间、进针次数、CT扫描次数都明显少于传统穿刺方法,一次穿刺成功率高达90%。结论:该装置能够精确定位病灶,引导穿刺针进针方向,从而降低穿刺失败概率,减轻患者痛苦。

Objective To design a CT-guided puncture positioning device to shorten puncture time while increase the accuracy.Methods The device realized 3D positioning by the principle of plane geometry,which was composed of a positioner,a fixation mechanism and a direction guiding mechanism for puncture needle.The positioner and direction guiding mechanism were made of transparent plastic,and the fixation mechanism was made of elastic cloth.Results The device gained advantages over the traditional means in puncture time,times of needle insertion and times of CT scanning,and had the puncture success rate in one time being 90%.Conclusion The device behaves well in focal positioning and puncture needle guiding,and thus decreases the probability of failed puncture and the patient pains