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Pediculus arcus vertebrae internal fixation operation navigation system based on structured light scanning

A technology of surgical navigation and structured light, applied in surgery, medical science and other directions, can solve the problems of reducing the stable operation of the system, increasing the complexity of the system, increasing the cost, etc., to eliminate coordinate conversion errors, reduce complexity, and improve reliability. Effect

Active Publication Date: 2012-11-21
李书纲
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Problems solved by technology

[0007] However, the above-mentioned surgical navigation system still has disadvantages: after the registration is completed, in order to track the position of the dynamic reference and surgical instruments, the infrared navigation locator is still required to participate, and the obtained position information exists in the position information exchange and communication with the structured light scanner. Calibration problems increase the complexity of the entire system, increase costs, and reduce the probability of stable system operation

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  • Pediculus arcus vertebrae internal fixation operation navigation system based on structured light scanning
  • Pediculus arcus vertebrae internal fixation operation navigation system based on structured light scanning
  • Pediculus arcus vertebrae internal fixation operation navigation system based on structured light scanning

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[0037] The principle, structure and implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0038] figure 1It is a schematic diagram of the structural principle of the pedicle internal fixation surgery navigation system based on structured light scanning according to the present invention. and the computer 4 of the CT three-dimensional model of the affected bone from the preoperative CT scan. In the operating room 7 there is an operating table 5 on which a patient 6 is located.

[0039] Since the posture of the patient may change at any time during the operation, a dynamic reference 2 is clamped on the patient's affected bone, and the dynamic reference adopts a structure commonly used in the prior art, such as the dynamic reference used in the publication number CN 101862220A. There are at least 3 non-collinear visible light markers installed on the dynamic benchmark 2. The visible light markers are made of mat...

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Abstract

The invention provides a pediculus arcus vertebrae internal fixation operation navigation system based on structured light scanning. The system comprises a structured light scanner, a dynamic base, operation instruments and a computer provided with an operation navigation software and a sick bone CT (Computed Tomography) three-dimensional model, wherein during the operation, the dynamic base is fixedly arranged at a sick bone; the structured light scanner is utilized to scan the sick bone so as to obtain a structured light three-dimensional image and is subjected to surface rectification together with the sick bone CT three-dimensional model; a camera on the structured light scanner is utilized to track the operation instrument, so as to obtain the position relations of the operation instruments relative to the dynamic base and the sick bone three-dimensional model; and the position relations are displayed on the computer provided with the operation navigation software in real time, so as to realize operation navigation. Compared with similar systems, the operation navigation system provided by the invention does not require an infrared navigation position finder to participate in tracking during the operation, can be used for improving the navigational fixing precision, simplifying the operation navigation process, lowering the complexity and cost of the whole system and occupying less space of an operation room, and can be conveniently used by doctors.

Description

technical field [0001] The invention relates to a computer-aided navigation system for pedicle internal fixation surgery, in particular to a navigation system for pedicle internal fixation surgery based on structured light scanning. Background technique [0002] Pedicle fixation surgery is a standardized routine surgery for thoracolumbar spinal fractures. This surgery stabilizes the spine by implanting pedicle screws. It can be used to treat spondylolisthesis, thoracolumbar fractures and other diseases. Since the spinal cord and nervous system adjacent to the pedicle are often not visible during surgery, this type of surgery is dangerous and difficult. Clinical studies have shown that the screw deviation rate of traditional pedicle internal fixation surgery is 28-40%, which is the main cause of surgical failure and postoperative complications. [0003] Computer Aided Orthopedic Surgery (CAOS) is guided by medical images (such as CT, MRI, X-ray or three-dimensional ultrasoun...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/90
Inventor 李书纲郑浩峻
Owner 李书纲
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