Marker-free optical surgical navigation system and navigation method thereof

A surgical navigation and marker-free technology, which is applied in the surgical navigation system and other directions, can solve the problems of navigation drop, cumbersome and time-consuming operation process, and light occlusion of marker points, so as to reduce the operation process, reduce operation time, and solve the problem of marker drop Effect

Inactive Publication Date: 2016-12-14
SOUTH CHINA UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0003] Before navigating, the doctor must manually click on the marker points on the patient's body and the image space marker points to register the marker points. If there is a large error and the accuracy of surgical registration cannot meet the clinical requirements, the registration process needs to be repeated
[0004

Method used

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  • Marker-free optical surgical navigation system and navigation method thereof

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Example Embodiment

[0023] The present invention will be further described below in conjunction with specific embodiments.

[0024] Such as figure 1 As shown, the mark-free optical surgical navigation system provided by this embodiment includes a structured light three-dimensional scanning system, an optical positioning system, a calibration board (not shown in the figure) and a graphics workstation 6.

[0025] The structured light three-dimensional scanning system includes a visualization camera 2, a visualization camera 4, and a projector 5. A structured light coordinate system is established. The graphics workstation 6 controls the projector 5 to continuously project structured light to the patient's surgical area, and controls the visualization camera 2, and the visualization camera 4 Synchronous acquisition of structured light images of the patient's surface; through the principle of triangulation, a three-dimensional point cloud of the surface of the patient's surgical site under the structured ...

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Abstract

The invention discloses a marker-free optical surgical navigation system and a navigation method thereof. The marker-free optical surgical navigation system comprises a structured light three-dimensional scanning system, an optical positioning system, a calibration board and a graphic workstation. The marker-free optical surgical navigation system continuously acquires surface information of a surgical area of a patient through structured light three-dimensional scanning, so that surface three-dimensional coordinates of the patient are acquired, coordinate transformation relation is obtained by virtue of real-time surface three-dimensional coordinates of the patient and preoperative three-dimensional medical image registry of the patient, positions of surgical instruments are traced in real time by virtue of the near infrared optical positioning system, and finally a three-dimensional medical image of a surgical site of the patient and surgery tools are displayed on display equipment in real time. The marker-free optical surgical navigation system disclosed by the invention has the advantages that marker-free optical surgical navigation on the patient is realized, a doctor does not need to carry out manual marker registry, operation processes and surgery time are reduced, the problem that a marker falls off is solved, and the marker-free optical surgical navigation system can be conveniently used under the condition that the marker is inconveniently pasted at some surgical sites.

Description

technical field [0001] The invention relates to the field of computer-aided surgical navigation, in particular to a marker-free optical surgical navigation system and a navigation method thereof. Background technique [0002] Surgical navigation system is an important development direction for precise and minimally invasive surgical treatment, and optical surgical navigation technology is the most widely used surgical navigation technology. Paste markers are widely used because they are less traumatic than mechanical fixation devices, easier to operate, and more accurate than anatomical markers. Optical navigation tracks the markers on the patient's body and surgical tools for tracking and positioning. Determine the location of markers and lesions on the preoperative 3D medical image; Intraoperative optical surgical navigation uses the positioning system to track the markers on the patient's body to obtain the patient's pose in real time, and register with the preoperative 3...

Claims

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Application Information

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IPC IPC(8): A61B34/20
Inventor 杨荣骞肖伟虎
Owner SOUTH CHINA UNIV OF TECH
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