Head surgery navigation method based on three-dimensional scanning

A three-dimensional scanning and surgical navigation technology, applied in surgical navigation systems, surgery, medical science, etc., can solve problems such as complex operations, avoid navigation deviation and improve accuracy.

Inactive Publication Date: 2019-03-22
北京大华旺达科技有限公司
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  • Abstract
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Problems solved by technology

The first type of method requires more preparatory work before the operation, and the second type of method is more complicated to operate during the operation

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  • Head surgery navigation method based on three-dimensional scanning
  • Head surgery navigation method based on three-dimensional scanning
  • Head surgery navigation method based on three-dimensional scanning

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Embodiment Construction

[0033] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0034] refer to figure 1 , an embodiment of the head surgery navigation method based on three-dimensional scanning of the present invention, comprising the following steps:

[0035] S1. Preoperative CT scanning of the patient's head;

[0036] S2. After the patient's surgical position is placed, one or more correction reference frames 202 are fixedly installed near the head, a reference reference frame 201 is installed on the patient's head, a stereo vision device 203 is installed, and a target reference frame is installed in the surgical instrument 205;

[0037] S3. Use the 3D scanning device 204 to obtain the 3D models of the patient's head, reference frame, and all calibration reference frames, fit the feature points of the reference frame and all calibration reference frames in the 3D model, and construct the patient's head and all calibration refe...

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Abstract

The invention relates to the field of medicine, in particular to a head surgery navigation method based on three-dimensional scanning. The method includes the following steps: (1) performing preoperative CT scanning on a patient's head; (2) mounting calibration reference frames, reference reference frames and stereo vision equipment; (3) acquiring three-dimensional models of the patient's head, the reference reference frames and all correction reference frames by adopting the three-dimensional scanning equipment, and fitting characteristic points; (4) acquiring spatial coordinates of the reference reference frames and all correction reference frames by adopting stereo vision; (5) correcting the visual space error through an error correction model; (6) performing point cloud registration ona CT model of the patient's head and a head model constructed by the three-dimensional scanning equipment; (7) acquiring coordinate systems of the target reference frames through stereo vision in real time, and displaying the position of the equipment in CT space in real time in navigation software. The method can avoid navigation deviation caused by mark deviation before operation and during operation, so that the accuracy of operation navigation is improved.

Description

technical field [0001] The invention relates to the medical field, in particular to disclosing a three-dimensional scanning-based navigation method for head surgery. Background technique [0002] Computer-assisted surgery (CAS) is an emerging technology that uses high-speed information processing capabilities of computers, integrates advanced imaging equipment (CT, MRI, etc.) and spatial positioning methods to provide navigation support for surgeons, making the surgical process safer and more accurate Surgery results are better and the recovery process is shorter. The basic principle of CAS is to use external tracking equipment to measure the position of the surgical instrument relative to the operating object in real time, and then display the position information on the medical image or atlas, so that the surgeon can clearly see the current position of the surgical instrument, which is convenient for judgment and decision-making surgery. [0003] CT navigation is the ear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B34/20
CPCA61B34/20A61B2034/2055
Inventor 胡磊刘洪澎王利峰郭娜
Owner 北京大华旺达科技有限公司
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