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Puncture guiding system of computer aided PCNL

A computer-aided, navigation system technology, applied in the field of medical surgical navigation, can solve the problem that mechanical devices are not easy to use, and achieve the effect of reducing the number of X-ray exposures and accurate spatial positioning

Inactive Publication Date: 2009-06-03
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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AI Technical Summary

Problems solved by technology

At present, there is also a method of indicating through a mechanical scale, but the mechanical device is not easy to use in surgery

Method used

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  • Puncture guiding system of computer aided PCNL
  • Puncture guiding system of computer aided PCNL
  • Puncture guiding system of computer aided PCNL

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Embodiment Construction

[0029] The present invention aims to complete the optimal determination of the insertion position of the puncture needle in percutaneous nephrolithotomy, and compare the insertion of needles at different positions to determine the operation path and penetrate the puncture needle into the lesion.

[0030] It obtains one or two projection images of the patient's kidney through the C-arm, and reconstructs the two-dimensional or three-dimensional image of the kidney through computer processing, which is used for the doctor to select the object displayed by the result of the puncture needle;

[0031] Fix a target mask on the C-arm, and establish the projection relationship between space coordinates and image coordinates through the three-dimensional coordinates of the lead point in the target mask in the earth system and its image coordinates in the X-ray images taken by the C-arm A transformation matrix, which is a projection matrix for projecting the position and direction of the ...

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Abstract

A computer assistant piercing leading system for dermal nephrocentesis, comprising: a brachial in C shape and its mating image taking device, a positioning system and its mating tracker, a target cover, an image working station, and a mating software treating image leading. The invention employs tracking for space target and image treating technology with computer to track the position and direction of puncture needle in real time, which helps doctor choose proper position for puncture needle and make detail operation plan. The choice of needle position can be decided by taking only one or two images, which can reduce the X exposition time for doctor and patient.

Description

technical field [0001] The invention relates to medical operation navigation technology, in particular to a computer-aided kidney puncture positioning and navigation system and method using a C-arm X-ray machine. Background technique [0002] Percutaneous nephroscopy is a very important part of endourology surgery. Together with ureteroscopy and extracorporeal shock wave lithotripsy, it has become the main modern treatment method for urinary stones, changing and gradually replacing traditional open surgery. The minimally invasive percutaneous nephrolithotomy (MPCNL) is the result of the development and perfection of this technique. PCN (percutaneous nephrolithotomy) is the most basic technique in endourology and the basis of percutaneous nephroscopy. The success of PCN surgery is ensured by the successful puncture of the puncture needle into the urinary system of the kidney and the establishment of a percutaneous renal channel through dilation. Appropriate puncture route a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B19/00A61B6/00A61B17/34A61B34/10A61B34/20
Inventor 汪超军吴剑鞠艳波叶大田
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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