Method and system for realizing surgical navigation by using real-time structured light technology

A surgical navigation and structured light technology, applied in the field of surgical navigation, can solve the problems of lost surgical instrument tracking, complicated operation, distortion tracking, etc., and achieves the effect of saving operation time and patient cost, small size of equipment, and accurate positioning.

Inactive Publication Date: 2021-08-10
李珍珠
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  • Abstract
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Problems solved by technology

It can be seen that although the two navigation methods disclosed in Chinese patents CN110236674 A and CN110141363 B both use structured light, structured light is only used in the "registration process" of surgery, and the "tracking process" still uses optical navigation or electromagnetic navigation. Navigation; there are still technical problems such as "optical navigation, expensive equipment, complicated operation, need to sterilize specific tracking reflective balls, surgical instruments are easily blocked and cause tracking loss; electromagnetic navigation is prone to magnetic field distortion and cause tracking failure" and other technical problems

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  • Method and system for realizing surgical navigation by using real-time structured light technology

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Embodiment 1

[0048] This embodiment provides a method for realizing navigation in craniocerebral hematoma surgery using real-time structured light technology. The specific operations are as follows:

[0049] (1) Convert the MRI or CT scan data of the head into DICOM format data, and then perform three-dimensional modeling of the head based on the data to obtain the preoperative model;

[0050] (2) According to the preoperative model, analyze the anatomical structure of the craniofacial area and the hematoma area, and design the needle entry point and puncture route; the software automatically calculates the length from the needle entry point to the center of the hematoma according to the designed needle entry point and puncture route;

[0051] (3) Fix the head (face up) and the real-time depth-scanning camera 1 position; the real-time depth-scanning camera 1 is located at the middle bisection angle between the vertical line of the normal line of the head and face and the axis of the surgica...

Embodiment 2

[0055] This embodiment discloses a system for realizing surgical navigation using real-time structured light technology: including a DICOM module, a preoperative planning module, a three-dimensional scanning module, a markerless registration module, a computer-aided design (CAD) module, and a computer vision enhancement module;

[0056] DICOM module: used to convert MRI or CT scan data obtained before operation into DICOM data format;

[0057] Preoperative planning module: build a preoperative model based on the data provided by the DICOM module, then design the surgical needle entry point and puncture route based on the preoperative model, and then calculate the length from the needle entry point to the center of the hematoma;

[0058] Three-dimensional scanning module: use the real-time depth scanning camera 1 to send and receive structured light, scan the real-time point cloud of the operation area where the surgical instrument 2 exists, and obtain the point cloud file of th...

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Abstract

The invention relates to a surgical navigation method and system, in particular to a method and a system for realizing surgical navigation by using a real-time structured light technology. According to the method, real-time structured light is used for scanning a structured light coverage area of an operation area in real time to obtain three-dimensional point cloud data, and then registration is carried out through unmarked registration and preoperative images; meanwhile, the surgical instrument in the space is recognized through structured light, then the surgical instrument in the space is positioned, real-time 3D point cloud reconstruction and preoperative image superposition are synchronously carried out, and finally the purpose of precise navigation surgery is achieved. The invention further provides the system for implementing the method. The system comprises a DICOM module, a preoperative planning module, a three-dimensional scanning module, an unmarked registration module, a display module, a computer aided design (CAD) module and a computer vision enhancement module. According to the method and the system, the space relation between the focus and the operation instrument can be directly obtained, one-time space conversion is reduced, errors are reduced, and accurate positioning is achieved.

Description

technical field [0001] The present invention relates to a method and system for surgical navigation, in particular to a method and system for realizing surgical navigation by using real-time structured light technology. Background technique [0002] With the development of medical imaging technology, such as CT scanning (Computer Tomography, computerized tomography), MRI (Magnetic Resonance Imaging, magnetic resonance imaging) and other technologies are changing with each passing day. Designing surgery is transformed into surgical planning combined with patient-individualized imaging data. With the development of medical engineering, the combination of preoperative imaging data and operator experience, surgical planning based on imaging data and doctor's experience, spatial registration through image technology during surgery, and then implementation of the surgical plan as planned. This experience, combined with navigational modes of imaging data, has become an important f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B34/20A61B34/10
CPCA61B34/10A61B34/20A61B34/25A61B2034/105A61B2034/2055
Inventor 李珍珠李泽福
Owner 李珍珠
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