Method for preparing skeleton model of deformed knee joint based on 3D printing technique

A 3D printing and bone model technology, applied in the medical field, can solve problems such as inability to complete surgery, increase operation time, and time-consuming, so as to improve communication effect, reduce operation time, and reduce operation risk.

Inactive Publication Date: 2017-11-07
SICHUAN UNIV
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Problems solved by technology

However, the ability of two-dimensional images to restore the actual symptoms of patients is limited, and there are many uncertain factors, which make the initial operation plan unsuitable or even impossible to complete the operation, so the operator must redesign the plan during the operation
This will not only increase the operation time, increase the operation risk, but also reduce the success rate of the operation,

Method used

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  • Method for preparing skeleton model of deformed knee joint based on 3D printing technique
  • Method for preparing skeleton model of deformed knee joint based on 3D printing technique
  • Method for preparing skeleton model of deformed knee joint based on 3D printing technique

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing, specifically illustrate the method for making the deformed knee bone model based on 3D printing:

[0026] 1. Continuous tomographic CT scanning is performed on the patient. The scanning position is the patient’s supine position and lying down naturally, the knee joint is naturally straightened, and the patella points directly upward to prevent errors caused by rotation. The scanning position is about 160mm from the articular surface of the distal femur , about 50mm down to the articular surface of the distal femur;

[0027] 2. Import the obtained DICOM 3.0 format file into the interactive medical image processing software Mimics, and select the bone window mode for image processing. Since the minimum gray value of bone tissue is generally greater than 1250, the maximum gray value of soft tissue is generally less than 1250. 1249, usually set the grayscale display range from 1031 to 1858;

[0028] 3. Carry out accurate thre...

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Abstract

The invention discloses a method for preparing a skeleton model of a deformed knee joint based on a 3D printing technique. The method mainly comprises the following steps of carrying out continuous tomography (CT) scanning on a patient to obtain image data; performing threshold distinction and binarization processing in medical software Mimics so as to obtain independent femur and tibial mask data, and constructing a three-dimensional model; conducting polygon processing and precise curved surface processing in reverse engineering software, and obtaining a NURBS curved surface model; using an FDM forming 3D printing technique to print a pathological skeleton model at a ratio of 1:1. According to the method for preparing the skeleton model of the deformed knee joint based on the 3D printing technique, a surgeon can be enabled to observe and understand the condition of the patient more intuitively so as to make an optimal scheme for an operation process, and the optimal operation scheme can be customized; the operation time is shortened, the operation risk is reduced, and the success rate of the operation is improved; pathological skeleton models of other parts of the body can be treated similarly, and therefore the method for preparing the skeleton model of the deformed knee joint based on the 3D printing technique is broad in development prospect and market potential.

Description

technical field [0001] The invention relates to the field of medical technology, and has distinctive characteristics of medical-industrial integration, specifically a method for making a bone model of a deformed knee joint based on 3D printing technology before knee joint surgery. Background technique [0002] Osteoarthritis (OA), also known as osteoarthrosis (osteoarthrosis), is a common rheumatic disease. Osteoarthritis affects walking, up and down stairs and other lower limb functions of elderly patients, and some seriously cause joint dysfunction, joint deformity, and even disability. Patients with severe osteoarthritis require knee surgery for treatment. [0003] Before traditional knee surgery, the surgeon will obtain the patient's image data through CT and MIR, and carry out preoperative design and planning on the two-dimensional image. However, the ability of two-dimensional images to restore the actual symptoms of patients is limited, and there are many uncertain ...

Claims

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Application Information

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IPC IPC(8): A61F2/30B33Y10/00
CPCA61F2/3094A61F2002/30948A61F2002/30952A61F2002/30985B33Y10/00
Inventor 王素李凯徐亮杨洋洋
Owner SICHUAN UNIV
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