Characteristic Analysis of LLaser Guidance and Development of its Monolithic Integrated System with a Three-dimensional Position Sensor

Abstract

We present a direct display method of surgical tool position and orientation in the surgical field by drawing twolaser beam planes, which is called “laser guidance method”. In this paper, the characteristic analysis of laser guidancewas also presented. The experimental results show the accuracy of laser guidance which the error was within 1.0mm forposition and within 1.0 degree for orientation. The theoretical analysis of laser guidance found out interesting behavior inthe tool adjustment procedure. Further, a monolithic integration of two laser devices with a three-dimensional positionsensor was designed using the result of workspace analysis. By the monolithic integration, feasibility of the system isexpected to be greatly improved since the monolithic integrated laser device requires no calibration and can be intraoperativelyrelocated. The details of the monolithic integrated system design were reported.