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Single-plane surgical positioning method and model

A positioning method and single-plane technology, which can be used in surgical navigation systems, stereotaxic surgical instruments, computer-aided planning/modeling, etc., and can solve the problems of scale influence and high cost of binocular positioning.

Active Publication Date: 2017-08-18
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the high cost of binocular positioning and the influence of the scale on the surgical operation during the surgical positioning process, the present invention designs a single-plane surgical positioning method and model that integrates C-arm imaging parameters

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  • Single-plane surgical positioning method and model
  • Single-plane surgical positioning method and model
  • Single-plane surgical positioning method and model

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Embodiment Construction

[0024] In order to improve the structure of the dual-plane positioning scale commonly used in orthopedic surgical robot systems and further improve its clinical operability, the present invention proposes a single-plane surgical positioning method.

[0025] see figure 1 , if the internal imaging parameters of the C-arm are known, a single-plane (marker point distribution) positioning scale can be designed, without using the binocular imaging system, using the perspective images of the C-arm in any two poses, Realize surgical positioning. This method has two advantages: (1) the positioning scale is simplified to a single-plane structure, which is convenient for intraoperative use; (2) the expensive binocular imaging system is not used, which greatly reduces the system cost.

[0026] see figure 2 , in order to facilitate the determination of the point position, the present invention describes the use of the coordinate relationship. There are three coordinate systems involved...

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Abstract

The invention discloses a single-plane surgical positioning method and model. The single-plane surgical positioning method is adopted, when C arm imaging parameters are known, for an arbitrary spatial coordinate point, two space straight lines passing through the point and an X ray emission source point can be obtained, and an intersection point is calculated to obtain the target position of a target point. The single-plane surgical positioning method does not use expensive binocular imaging systems, and thus the system cost is greatly reduced. The single-plane surgical positioning model includes a ruler and a calibration board used in a surgery, the ruler is designed in an L shape, the interference with patients is reduced, and the model is convenient to use in the surgery.

Description

technical field [0001] The invention relates to a positioning method and a model, more particularly, to a method and a model for single-plane surgical positioning that combine C-arm imaging parameters. Background technique [0002] Computer assisted surgery (computer assisted surgery) is to use the powerful analysis and processing capabilities of computers to assist doctors to efficiently and accurately use navigation and positioning systems or surgical robots to perform image registration and surgical space positioning, and then formulate surgical planning and complete surgical operations. . Surgical positioning technology is the core technology and key technology of CAS, and the relative position relationship between surgical instruments and lesion points can be established by using this technology. The basic principle is: real-time tracking of the relative positional relationship between the surgical instrument and the patient through photoelectric equipment, electromagn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B34/10A61B34/20A61B90/11
Inventor 刘文勇李秦彭远卓谭保森侯晓龙桑圣楠
Owner BEIHANG UNIV
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