System for determining length of catheter required to extend between insertion site and target location prior to placement in patient

The application relates to a system for determining the length of a catheter required to extend between an insertion site and a target location prior to placement in a patient. The system may include a measurement device that may be aligned with a three-dimensional arrangement of one or more external indicia and rendered the three-dimensional arrangement. The measurement device may include a magnetic and/or fiber optic system to draw external indicia. The system then determines a frame to provide a predicted catheter length required to extend between the insertion site and the target location. During placement, a measuring device may also be included in the catheter to confirm the actual catheter length and improve the accuracy of future prediction frameworks. 本申请涉及用于在置于患者体内之前确定在插入部位与目标定位之间延伸所需的导管长度的系统。该系统可以包括测量装置，该测量装置可以与一个或多个外部标记的三维布置对准，并且绘制该三维布置。该测量装置可以包括磁性和/或光纤系统以绘制外部标记。该系统然后确定框架以提供在插入部位与目标定位之间延伸所需的预测导管长度。在放置期间，测量装置还可以包含在导管中，以确认实际导管长度并提高未来预测框架的准确度。