Method and device for verifying precision of navigation positioning system for joint replacement
A technology for joint replacement and navigation and positioning, which is applied in the field of accuracy verification scheme and the accuracy verification of the probe calibration frame of the navigation and positioning system. problems, to achieve the effect of reducing workload, high adaptability and compatibility, and improving accuracy and efficiency
Active Publication Date: 2022-07-01
LONGWOOD VALLEY MEDICAL TECH CO LTD +1
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Problems solved by technology
Although the above scheme can achieve the purpose of verification, the requirements for the proficiency of personnel in the actual operation process are very high, and mistakes are easy to occur if there is a little carelessness. In addition, there are inevitable errors in the manual operation process. The reliability of the measurement results is low; in addition, the above scheme also has other problems such as low verification efficiency and serious waste of human resources
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[0053] The present invention discloses a method and a device for verifying the accuracy of a navigation and positioning system used in a surgical navigation system, especially a bone and joint surgical navigation system for joint replacement. The specific scheme is as follows. Among them, the following description is given by taking the navigation and positioning system as the probe calibration frame as an example.
[0054] On the one hand, the present invention provides a method for verifying the accuracy of a navigation and positioning system for joint replacement surgery. The realization of the method relies on the use of a probe calibration frame and a reference coordinate assembly.
[0055] The structure of the probe calibration frame is as follows: figure 2 As shown, its main body is composed of a needle 11 and a probe holder 12. The needle 11 and the probe holder 12 are fixedly connected by fixing pins 15. The probe holder 12 is provided with a plurality of The optica...
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The invention discloses a navigation positioning system precision verification method and device for joint replacement, and the method comprises the steps: obtaining the actual measurement space coordinate values of a plurality of markers on a reference coordinate assembly, and building a first three-dimensional coordinate system according to the actual measurement space coordinate values of the markers; receiving reflection ball theoretical space coordinate values of a plurality of optical reflection balls on the probe calibration frame at the first moment, the second moment and the third moment, and receiving an error threshold value; reflective ball actual measurement space coordinate values of a plurality of optical reflective balls in the second three-dimensional coordinate system at each moment are obtained; obtaining reflection ball conversion space coordinate values of the plurality of optical reflection balls at each moment through coordinate conversion; and verifying the precision of the probe calibration frame according to the conversion space coordinate value of the reflection ball and the theoretical space coordinate value of the reflection ball. According to the invention, the problems of large measurement error, low result reliability and the like in the prior art are avoided by using automatic means such as image acquisition and processing, and the precision verification effect of the probe calibration frame is remarkably improved.
Description
technical field [0001] The invention belongs to an accuracy verification scheme, in particular to a method and device for accuracy verification of a probe calibration frame of a navigation positioning system for joint replacement, and relates to the technical field of surgical instruments and data processing. Background technique [0002] In recent years, with the development of medical robotics technology and the continuous updating of related equipment, surgical navigation systems have become more and more widely used in the medical field. [0003] In practical application of surgical navigation system, especially in the process of automatic registration or registration of robotic surgical system, the use of probe calibration frame is indispensable. It can be said that the probe calibration frame, as the reference of the entire robotic surgery system, is directly related to the surgical positioning accuracy and affects the final surgical effect. Because of this, before th...
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IPC IPC(8): A61B34/20G01B11/00G06T7/70
CPCA61B34/20G06T7/70G01B11/002A61B2034/2065A61B2034/2068
Inventor 刘星宇张逸凌
Owner LONGWOOD VALLEY MEDICAL TECH CO LTD