Personalized jaw surgery guide and manufacturing method thereof

A manufacturing method and surgical technology, which is applied in the field of biomedical engineering, can solve problems such as the inability to ensure the accuracy of the jaw surgery guide plate, difficulty in controlling the manufacturing precision, and affecting the appearance of patients, so as to ensure the accuracy of the direction and magnitude of the force High performance, good dimensional accuracy and ideal surface roughness

Active Publication Date: 2018-08-28
GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, only based on the CT scan results to design and establish the model of the jaw surgery guide plate, it is impossible to ensure the accuracy of the force direction and size of the jaw surgery guide plate, and the use of SLA molding makes the manufacturing accuracy difficult to control, so there is still a low degree of fit. Defects that affect the appearance of the patient, as well as the effect and comfort of use

Method used

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  • Personalized jaw surgery guide and manufacturing method thereof
  • Personalized jaw surgery guide and manufacturing method thereof
  • Personalized jaw surgery guide and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A manufacturing method of a personalized jaw surgery guide plate in this embodiment includes the following steps (see the flow chart figure 1 ):

[0038] (1) Reverse modeling: CT scanning of the patient's jawbone to obtain the data of the damaged jawbone, use Imageware reverse engineering software to eliminate noise, then perform feature extraction, obtain the damaged jawbone model, and import it into the computer , the doctor will repair the damaged jaw, including bone reduction, defect filling and repair, etc., and design the surgical guide model accordingly, such as figure 2 shown;

[0039] (2) Forward modeling: Unigraphics NX 3D modeling software is used for computer-aided design, and the interactive graphic design method is used to accurately repair the surgical template model and improve the fit of the surgical template model to the characteristics of the jaw bone, so that the surgical template can be matched with the The damaged jaws are highly anastomosed to ...

Embodiment 2

[0058] In this embodiment, a method for manufacturing a personalized jaw surgery guide plate, the steps are the same as in Embodiment 1, the difference is that:

[0059] The molding process described in step (5) is as follows:

[0060] a. Lay titanium powder on the substrate, the thickness of the powder layer is 80 μm, and use a scraper to distribute the titanium powder layer evenly;

[0061] b. Introduce argon gas at a flow rate of 0.1L / min, use a high-precision scanning galvanometer, and perform laser scanning molding (200W fiber laser) based on the path file generated by the three-dimensional model layer, and use focused laser energy to melt the metal titanium powder, To form a smooth melting layer, the scanning parameters are:

[0062] The scanning speed is 8m / s; the laser beam diameter is 80μm; the repeat positioning accuracy is ±0.005mm; the molding speed is 5ccm / h.

Embodiment 3

[0064] In this embodiment, a method for manufacturing a personalized jaw surgery guide plate, the steps are the same as in Embodiment 1, the difference is that:

[0065] The molding process described in step (5) is as follows:

[0066] a. Lay titanium powder on the substrate, the thickness of the powder layer is 90 μm, and use a scraper to distribute the titanium powder layer evenly;

[0067] b. Introduce argon gas at a flow rate of 1L / min, use a high-precision scanning galvanometer, and perform laser scanning molding (200W fiber laser) based on the path file generated by the three-dimensional model layer, and use focused laser energy to melt titanium powder to form For a flat melted layer, the scanning parameters are:

[0068] The scanning speed is 15m / s; the laser beam diameter is 120μm; the repeat positioning accuracy is ±0.005mm; the molding speed is 15ccm / h.

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Abstract

The invention relates to a personalized maxillofacial surgery guide plate and a manufacturing method thereof. The manufacturing method comprises the following steps: performing reverse modeling by CT scanning, then performing positive auxiliary modeling by Unigraphics NX, precisely repairing a surgery guide plate model, performing a simulation analysis on the surgery guide plate model by a finite element analysis method, performing an optimal design on the model according to an analysis result to enable the model to meet the property of an surgery guide plate material; performing three-dimensional slicing layering processing on the surgery guide plate model meeting the property of the surgery guide plate material, reasonably controlling the parameters of the model by adopting selective laser melting equipment, and forming to obtain the personalized maxillofacial surgery guide plate. According to the manufacturing method, the accuracy of direction and the size of stress on the maxillofacial surgery guide plate and the forming precision are effectively guaranteed; compared with the prior art, the manufactured personalized maxillofacial surgery guide plate can accord with the jawbone feature of a patient more precisely, so that secondary injury to the appearance or the body of the patient is avoided.

Description

technical field [0001] The invention relates to the technical field of biomedical engineering, in particular to a personalized jaw surgery guide plate and a manufacturing method thereof. Background technique [0002] Jawbone and cheekbone are the supporting bones of human appearance, which have a great influence on human appearance. If the cheekbones or jaws are injured in an accident, the repair requires the use of a surgical guide, either as a brace or as an immobilization, etc. During the restoration process, the appearance characteristics of different people are different, and the degree of injury is also inconsistent. It can be seen from this that the manufacture of the guide plate should be a personalized design. In the traditional process, the bottom plate is made of metal (such as pure titanium, etc.), and also has non-metallic materials. However, there are still deficiencies in the realization of personalization and high precision. Since the surgical guide is co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/80
CPCA61B17/80A61B17/8061
Inventor 张弓彭忠凯梁济民罗良维陈贤帅张鹏林天赐黄达鸿
Owner GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
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