Accurate position determining device, method and system for surgical tool

Abstract

The disclosure discloses an accurate position determining device, method and system for surgical tool. The method adopts two trackers for navigation and position determining: an end tracker is used for accurate position determining; the end tracker is removed after it is in place, and a main body tracker is used for real-time monitoring. Robotic arm movement will generate errors, and a navigation device is used to achieve multiple calibrations and successive recursion to approach a precise position, which thereby ensures a high accuracy to the utmost extent. During a navigation and position determining process, the main body tracker can provide a distance from a real-time position of a surgical tool to a spatial pose of a target cutting plane and feed it to an operator through a screen of a host, who makes fine adjustments by visual indication, and stops swinging if it exceeds a threshold value.

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