Method for preparing mandibular angle osteotomy guide plates on basis of 3D (three-dimensional) printing

A 3D printing and mandibular technology, applied in bone drill guidance, medical science, computer-aided planning/modeling, etc., can solve problems such as nerve injury, narrow surgical field of view, and inaccuracy

Inactive Publication Date: 2018-04-17
PLASTIC SURGERY HOSPITAL CHINESE ACAD OF MEDICAL SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a 3D printing-based method for preparing a mandibular angle osteotomy guide, which solves the problem that the surgical field of view is narrow, and the operator only designs the osteotomy line based on experience, which is inaccurate, prone to fractures, nerve damage, etc. Complications; the operation takes a long time, and patients recover slowly after surgery: it is difficult to meet the individual needs of patients

Method used

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  • Method for preparing mandibular angle osteotomy guide plates on basis of 3D (three-dimensional) printing
  • Method for preparing mandibular angle osteotomy guide plates on basis of 3D (three-dimensional) printing
  • Method for preparing mandibular angle osteotomy guide plates on basis of 3D (three-dimensional) printing

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preparation example Construction

[0032] Such as Figure 1-Figure 3 As shown, the present invention provides a method for preparing a mandibular angle osteotomy guide plate based on 3D printing. First, mandibular CT examination is performed to obtain two-dimensional CT data; the two-dimensional CT data is converted into a three-dimensional model by software; Bone, design arc osteotomy line; extract the excised mandibular angle bone block data from the 3D model and convert it into STL format file; use automated reverse engineering software to process the STL format file to complete the guide plate design; import the data into the 3D printer , print the prototype of the mandibular angle osteotomy guide plate; process the prototype of the mandibular angle osteotomy guide plate to obtain the final mandibular angle osteotomy guide plate. In this way, after many times of clinical practice, the feasibility of placing the osteotomy guide plate in the operation area was firstly verified; secondly, the mandibular angle ...

Embodiment

[0039] After the patient was admitted to the hospital, he underwent CT examination, imported the CT data into the ProPlan software, and converted the two-dimensional CT data into a three-dimensional model. With the participation of the patient, the osteotomy was simulated on the three-dimensional model, without damaging the inferior alveolar neurovascular bundle. Next, design an arc-shaped osteotomy line, and measure it with software to ensure that the two sides of the mandibular osteotomy are basically symmetrical, accurate to 0.01mm; extract the data of the resected mandibular angle bone block from the computer 3D model and convert it into an STL format file , import it into the GeoMagic software and open it, and then complete the design of the osteotomy guide plate through the following four steps: 1. Remove miscellaneous points; 2. Cut according to the required area; 3. Repair the cutting data; 4. Offset thickness, in short, first Hollow out the 3D model of the amputated ma...

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Abstract

The invention relates to the field of facial skeleton contour reconstruction operation, in particular to a method for preparing mandibular angle osteotomy guide plates on the basis of 3D (three-dimensional) printing. The method includes converting two-dimensional CT (computed tomography) data into three-dimensional models by the aid of software; simulating osteotomy on the three-dimensional modelsand designing arc-shaped osteotomy lines; extracting excision mandibular angle bone block data from the three-dimensional models and converting the excision mandibular angle bone block data into files in STL (standard template library) formats; processing the files in the STL formats by the aid of automatic reverse engineering software and completely designing guide plates; importing data into 3Dprinting machines and printing mandibular angle osteotomy guide plate prototypes; processing the mandibular angle osteotomy guide plate prototypes to obtain the ultimate mandibular angle osteotomy guide plates. The method has the advantages that the osteotomy lines can be preoperatively precisely designed on the computer three-dimensional models by the aid of computer software three-dimensional designs and 3D printing technologies, and accordingly personalized and digital osteotomy guide plates which can be completely matched with three-dimensional forms of bones of mandibular angle regions can be manufactured; entity osteotomy guide plates can be printed by the aid of the 3D printing technologies, operation region guide osteotomy is implanted during operation, and accordingly the accuracy of the operation can be improved.

Description

technical field [0001] The invention relates to the field of facial bone contour remodeling surgery, in particular to a method for preparing a mandibular angle osteotomy guide plate based on 3D printing. Background technique [0002] At present, mandibular angle arc osteotomy belongs to facial bone contour reconstruction surgery. At present, the design of bilateral osteotomy lines is mostly based on preoperative film reading (X-ray film + CT) and computer software measurement design and operation. However, how to accurately copy the preoperatively designed surgical plan and various measurement data to the patient's mandible during the operation has always been a difficult problem. Coupled with the narrow field of view of this operation, it is difficult for the operator to obtain an effective three-dimensional vision of the operation area, and the design of the osteotomy line is not accurate enough based on experience alone. If the position of the osteotomy line is too low, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/17A61B34/10B33Y10/00B33Y50/00
CPCA61B17/1732A61B34/10A61B2017/00526A61B2017/00831A61B2034/102A61B2034/105B33Y10/00B33Y50/00
Inventor 张超滕利孙晓梅杨莉亚
Owner PLASTIC SURGERY HOSPITAL CHINESE ACAD OF MEDICAL SCI
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