The invention relates to the technical field of
medical equipment, and specifically relates to a
lung nodule puncture
navigation system. The
system comprises a three-dimensional
visualization displayunit, a coarse registration unit, a fine registration unit and a navigation tracking unit, the three-dimensional
visualization display unit is used for displaying a
lung three-dimensional model, a
lung nodule three-dimensional model, a thoracic cage three-dimensional model and a
skin three-dimensional model of a patient, the coarse registration unit is used for acquiring information of dissectionposition points from a thoracic cage and the thoracic cage three-dimensional model of the patient and performing registration on the information of the two
dissection position points, the fine registration unit is used for performing registration on a
point cloud model of the patient
skin and the
skin three-dimensional model, the
point cloud model acquires contour information of the
body surface skin of the patient in real time through a positioning tool, and the navigation tracking unit comprises an
infrared tracking system used for real-time navigation tracking of the position of the positioning tool on the
body surface of the patient. According to the
system, the damage to people due to arrangement of a spring coil and the
radiation damage to people caused by repeated guiding of CT in the conventional method can be avoided.