Location ruler used in operation

A positioning scale and surgery technology, applied in the field of medical devices, can solve the problems of limiting the perspective angle of the C-arm, prolonging the operation time, increasing the damage of X-ray radiation, etc. Effect

Active Publication Date: 2014-10-08
BEIJING TINAVI MEDICAL TECH
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Problems solved by technology

However, this type of positioning scale can only be seen through two orientations (usually front and side) at a predetermined position, and at least two rows of frontal X-ray rulers and at least two rows of lateral X-ray rulers have a specific scale configuration The perspective angle of the C-arm is limited during the operation, so the scope of use of the positioning ruler is greatly limited
In addition, i

Method used

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  • Location ruler used in operation
  • Location ruler used in operation
  • Location ruler used in operation

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Embodiment Construction

[0036] The present invention will be described below in conjunction with the accompanying drawings.

[0037]The invention relates to a surgical positioning scale, which is used for the spatial positioning calculation of the surgical path between an X-ray light source and an X-ray imaging device, and includes two opposite surfaces that transmit X-rays, and the two opposite surfaces are fixedly connected through the connection surfaces that transmit X-rays , the distance between the two opposite surfaces is 5cm-15cm, and a group of marks are set on the two opposite surfaces, and each group of marks includes at least four non-existing objects based on the calibration of the linear camera model in the X-ray imaging device and the three-dimensional space point reconstruction principle. Marking points on a straight line, each marking point is an X-ray-opaque component; any opposite surface or connection surface is fixedly connected to a scale handle, and an interface for connecting w...

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Abstract

The invention relates to a location ruler used in an operation. The location ruler comprises two X-ray-pervious opposite faces, the two opposite faces are fixedly connected through an X-ray-pervious connection face, the distance between the two opposite faces ranges from 5 cm to 15 cm, the two opposite faces are respectively provided with a set of marks, each set of marks include at least four mark points which are on different straight lines and are arranged based on marking of a linear camera model in an X-ray imaging device and the three-dimensional spatial point rebuilding principle, the marking points are X-ray-impervious components, any opposite face or the connection face is fixedly connected with a ruler handle, and the ruler handle is provided with a connector used for being connected with a mechanical arm of an orthopedics robot. According to the location ruler, by means of one set of marking points of each opposite face, perspective location can be achieved at any angle, system errors caused during calculation of an operation path can be eliminated and precision of the location ruler is improved.

Description

technical field [0001] The invention relates to a medical device, in particular to a surgical positioning scale used for spatial positioning calculation of orthopedic navigation surgical path. Background technique [0002] In various orthopedic navigation operations, the spatial positioning algorithm is one of the core technologies. The positioning scale is the reference benchmark for the calculation of the spatial positioning of the surgical path in the robotic surgery system, and is a key component that affects the accuracy of surgical positioning. The positioning scale is generally installed between the X-ray light source and the X-ray imaging device. The X-ray light source passes through the positioning scale to form an image, and then the marking points on the positioning scale are displayed on the image. According to the specific marks in the image formed by the X-ray The distribution of points can be used for spatial positioning calculation, and finally determine the ...

Claims

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Application Information

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IPC IPC(8): A61B19/00
Inventor 张送根张维军王彬彬
Owner BEIJING TINAVI MEDICAL TECH
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