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Calibration device and calibration method for mixed reality surgical navigation system

A technology of mixed reality and surgical navigation, applied in the field of calibration device calibration, can solve the problems of inability to complete the calibration of surgical instruments at the same time, the need to improve the accuracy of virtual and real fusion, and the higher requirements for computing resources, so as to save the calibration time and improve the depth perception calibration ability. , the effect of simplifying the calibration process

Pending Publication Date: 2021-10-19
SHANGHAI JIAO TONG UNIV
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AI Technical Summary

Problems solved by technology

However, this method requires high computing resources, and the accuracy of virtual-real fusion needs to be improved.
In summary, the existing calibration devices and methods for mixed reality navigation systems have defects such as poor accuracy, poor real-time performance, poor stability, and inability to complete surgical instrument calibration at the same time.

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  • Calibration device and calibration method for mixed reality surgical navigation system
  • Calibration device and calibration method for mixed reality surgical navigation system
  • Calibration device and calibration method for mixed reality surgical navigation system

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Embodiment Construction

[0041] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0042] A calibration device for a mixed reality surgical navigation system, such as Figure 1 ~ Figure 3 shown, including:

[0043] The calibration block body 1 and the hand-held grip bar 10 arranged on the first side of the calibration block body 1;

[0044] The optical tracking module is provided with a fluorescent ball 14 on the second side of the calibration block body 1, wherein the first side and the second side are different sides, and in this embodiment, the first side is the lower surface of the calibration block 16. The second side is the rear surface 12 of the calibration...

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Abstract

The invention relates to a calibration device and a calibration method for a mixed reality surgical navigation system, and the calibration device comprises a calibration block body and a handheld rod disposed on a first side surface of the calibration block body; an optical tracking module which is provided with a small fluorescent ball and is arranged on the second side surface of the calibration block body, and the first side surface and the second side surface are different side surfaces; alignment mark points are arranged at the four vertex angles of the calibration block body, and three of the alignment mark points are located in the same plane. An alignment observation groove is formed in the calibration block body, a plurality of probe containing holes and surgical instrument containing holes in one-to-one correspondence with the probe containing holes are formed in the calibration block body, and the central axis of each surgical instrument containing hole and the central axis of the corresponding probe containing hole are located on the same straight line. Compared with the prior art, mixed reality space calibration and surgical instrument calibration can be completed at the same time, multiple functions are achieved, the calibration block can be aligned with multiple mark points at a time, and the calibration time can be saved.

Description

technical field [0001] The invention relates to a calibration method for a calibration device, in particular to a calibration device and a calibration method for a mixed reality surgical navigation system. Background technique [0002] The mixed reality surgical navigation system can construct a virtual and real surgical operating environment by superimposing virtual tissues, organs or auxiliary information generated in the computer on the real surgical scene. By wearing an optical semi-transparent helmet-mounted display, the operator can observe the important soft and hard tissues under the skin that cannot be seen by the naked eye. While expanding the operator's visual perception of the environment, it improves the safety and reliability of the operation. In order to achieve the effect of virtual and real dynamic fusion, it is necessary to calibrate the world coordinate system of the hybrid optical see-through head-mounted display and the navigation system. In addition, ...

Claims

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Application Information

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IPC IPC(8): A61B34/20
CPCA61B34/20A61B2034/2055A61B2034/2068
Inventor 涂朴勋陈晓军郭妍李东远
Owner SHANGHAI JIAO TONG UNIV
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