Preoperative hip joint deformity bone model manufacturing method based on 3D printing technology

A bone model and 3D printing technology, applied in the medical field, can solve the problems of low image registration accuracy, difficult to determine the reference bone, low accuracy, etc., to improve the surgical effect, reduce errors, and reduce the complication rate.

Inactive Publication Date: 2016-07-06
陈继营
3 Cites 9 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0005] Although 3D reconstruction and computer simulation of surgical operations allow physicians to specify a good preoperative plan, but because this technology can only be displayed in 2D, the surgeon forms the plan in his mind, and still cannot provide precise position...
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Abstract

The invention relates to a 3D printing-based method for making a preoperative bone model of hip joint deformity, which uses the force line standard of the human body to collect digital imaging data of the hip joint, processes the digital imaging data, and then inputs the digital imaging data into computer-aided design software for bone layering and positioning, carry out 1:1 operation design on the digital three-dimensional model and human skeleton, and use CAD to remove the deformed bone according to the deformity state of the hip joint, so that the formed upper and lower osteotomies can be matched up and down; the generated three segments The imaging data of the osteotomy is input into the Materialize 3D modeling software to simulate the human skeleton and then 3D print out the three-segment osteotomy model. The osteotomy simulation operation in vitro can realize the plasticity of the prosthesis to be implanted in advance, and truly achieve personalized surgery and customized prosthesis design and production.

Application Domain

Image generation3D modelling

Technology Topic

Three dimensional modelJoint deformity +14

Examples

  • Experimental program(2)

Example Embodiment

[0026] Example 1
[0027] This embodiment provides a method for making a preoperative hip joint deformity bone model based on 3D printing technology, including the following steps:
[0028] (1) Perform X-ray full-length X-ray force line positioning on the patient's hip joint, and collect the imaging data generated by the MRI examination of the patient's hip joint. The imaging data includes bone size and curved surface parameters and is stored in DICOM format;
[0029] (2) Input the imaging data described in step (1) into the Materialise three-dimensional modeling software, and through image segmentation, editing, and three-dimensional calculation processing, the patient's original digital three-dimensional model of hip deformity bones is extracted; the original hip The digital three-dimensional model of joint deformity bone includes the original femur, tibia and meniscus;
[0030] (3) Input the original digital three-dimensional model of the deformed bones of the hip joint into the CAD software for bone layering and positioning. The specific operation is: digital virtual osteotomy according to the patient's individual situation, and the doctor directly controls the The original digital three-dimensional model of the deformed bones of the hip joint undergoes the same osteotomy operation as the actual surgical plan;
[0031] After the bone stratification and positioning processing are performed, the deformed bone model to be removed, the upper osteotomy model above the deformed bone, and the lower osteotomy model below the deformed bone are obtained, respectively, and the The imaging data of the deformed bone model, the upper osteotomy model, and the lower osteotomy model;
[0032] (4) Input the imaging data of the deformed bone model diagram, the upper osteotomy model diagram, and the lower osteotomy model diagram described in step (3) into the three-dimensional modeling software, and then use the electron beam selected area to melt the 3D printing equipment to print, set Determine the processing parameters, perform electron beam selective melting and rapid prototyping of the titanium alloy powder to obtain the deformed bone model, the upper osteotomy model and the lower osteotomy model respectively;
[0033] (5) The upper osteotomy model, the deformed bone model, and the lower osteotomy model described in step (4) are matched and combined in an order from top to bottom to obtain the preoperative hip joint deformity bone model.

Example Embodiment

[0034] Example 2
[0035] This embodiment provides a method for making a preoperative hip joint deformity bone model based on 3D printing technology, including the following steps:
[0036] (1) Perform X-ray full-length film force line positioning on the patient's hip joint, and collect the imaging data generated by the MRI examination of the patient's hip joint, and store it in DICOM format;
[0037] (2) Input the DICOM format imaging data described in step (1) into the Materialise 3D modeling software, and extract the original digital 3D model of the patient's hip joint deformity through image segmentation, editing, and 3D calculation processing;
[0038] (3) Input the original digital three-dimensional model of the deformed bones of the hip joint into the CAD software for bone layering and positioning. The specific operation is: digital virtual osteotomy according to the patient's individual situation, and the doctor directly controls the The original digital three-dimensional model of the deformed bones of the hip joint undergoes the same osteotomy operation as the actual surgical plan;
[0039] After the bone stratification and positioning process, the deformed bone model to be removed, the upper osteotomy model above the deformed bone, and the lower osteotomy model below the deformed bone are obtained, and the said The imaging data of the deformed bone model diagram, the upper osteotomy model diagram, and the lower osteotomy model diagram are stored in DICOM format;
[0040] (4) Input the DICOM format imaging data of the deformed bone model diagram, the upper osteotomy model diagram, and the lower osteotomy model diagram described in step (3) into the 3D modeling software, and then use the electron beam selective melting 3D printing device to print , Set the processing parameters, perform electron beam selective melting and rapid prototyping of the titanium alloy powder to obtain the deformed bone model, the upper osteotomy model and the lower osteotomy model respectively;
[0041] (5) The upper osteotomy model, the deformed bone model, and the lower osteotomy model described in step (4) are matched and combined in an order from top to bottom to obtain the preoperative hip joint deformity bone model.
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