Method and apparatus for solving direction perception disorder caused by spinning mirror

By modifying electromagnetic navigation equipment and using three-dimensional reconstruction technology, the obstacle to directional perception caused by rotating the endoscope during endoscopic examination has been solved, enabling clear display and accurate diagnosis of intracavitary and extracavitary tissues, reducing operational difficulty and misdiagnosis rate.

CN120392295BActive Publication Date: 2026-06-09WEST CHINA HOSPITAL SICHUAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WEST CHINA HOSPITAL SICHUAN UNIV
Filing Date
2025-04-28
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

During endoscopic examination of lesions within the upper gastrointestinal wall, endoscopists often experience directional impairment due to the rotation of the scope, making it difficult to accurately locate adjacent tissue structures outside the lumen, leading to diagnostic difficulties and a high rate of misdiagnosis.

Method used

By modifying the electromagnetic navigation equipment, the endoscope's position and image inside the lumen are obtained, the rotation angle of the endoscope is calculated, and the adjacent tissues outside the lumen are displayed using three-dimensional reconstruction technology, providing three-dimensional visualization-assisted diagnosis.

Benefits of technology

Without changing examination habits, it can clearly display the inside of the lumen and adjacent tissues outside the lumen, reducing the difficulty of operation and the misdiagnosis rate, and improving the accuracy of diagnosis.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a solution method and device for direction perception disorder caused by rotating a mirror, and solves the problem that it is difficult to determine the adjacent tissue structure outside the part after endoscopic examination is rotated in similar upper gastrointestinal tract wall lesions. The application comprises the following steps: acquiring the pose information of an endoscope in an electromagnetic navigation system of a lumen target position and corresponding lumen image as a reference pose; acquiring the trajectory pose of the endoscope after adjusting the field of view in the electromagnetic navigation system and corresponding lumen image, and determining the Euler angle of each trajectory point according to the trajectory pose; acquiring the trajectory pose of the endoscope after adjusting the field of view in the electromagnetic navigation system and corresponding lumen image, and determining the Euler angle of each trajectory point according to the trajectory pose; and reconstructing the lumen and the adjacent tissue according to the lumen image three-dimensionally, and obtaining the rotated lumen and the adjacent tissue according to the rotating angle and the corresponding lumen image. Through the application, the adjacent tissue outside the endoscope can be clearly known after the endoscope is rotated to the best field of view.
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