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Titanium individuation mandibula prosthesis and preparation

A mandible and prosthesis technology, applied in the field of titanium individual mandibular prosthesis and preparation technology, can solve the problems of failing to meet clinical use requirements, difficult surface treatment, loose casting tissue, etc., and achieve good self-development space, Avoid difficult surface treatment and beautiful appearance

Inactive Publication Date: 2008-09-10
上海双申医疗器械股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of individualized prosthesis can produce relatively accurate and good-looking implants, it requires high equipment, loose microstructure inside the casting, and difficult surface treatment, which is far from meeting the requirements of clinical use.

Method used

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  • Titanium individuation mandibula prosthesis and preparation
  • Titanium individuation mandibula prosthesis and preparation
  • Titanium individuation mandibula prosthesis and preparation

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0033] Preparation of individualized mandibular prosthesis with unilateral condyle on the right side, combined with the attached figure 1 In the technical scheme, specific embodiments of the present invention are as follows:

[0034] 1.1 Data collection

[0035] Two-dimensional CT scanning of the patient was used. The CT machine was GE MEDICAL SYSTEMS / LightSpeed-16. The scanning method was helical scanning, the slice thickness was 1.25mm, and the filter function was STAND. A total of 75 images were acquired in the format of DICOM files. Figure 2 is One of the sliced ​​images.

[0036] 1.2 Graphics and image processing and 3D reconstruction

[0037] Use image processing technology to perform graphic image processing on patient slice scan data, set boundary thresholds according to the different gray values ​​of soft and hard tissues in CT images, separate soft and hard tissues, eliminate noise data, and correct distortion steps, Obtain bone tissue contour data of the mandibl...

Embodiment 2

[0043]Preparation of individual prosthesis for left mandibular body defect, combined with figure 1 In the technical scheme, specific embodiments of the present invention are as follows:

[0044] 1.1 Data collection

[0045] Two-dimensional CT scan of the patient was used. The CT machine was GE MEDICAL SYSTEMS / LightSpeed-16. The scanning method was helical scanning, the slice thickness was 1.25mm, and the filter function was STAND. A total of 86 images were obtained in the format of DICOM files.

[0046] 1.2 Graphics and image processing and 3D reconstruction

[0047] Use image processing technology to perform graphic image processing on patient slice scan data, set boundary thresholds according to the different gray values ​​of soft and hard tissues in CT images, separate soft and hard tissues, eliminate noise data, and correct distortion steps, Obtain mandibular bone tissue contour data. According to the extracted bone tissue contour data, input the inverse software (Pro / e...

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Abstract

The invention relates to individualized mandible prosthesis of titanium alloy and a preparation method, which is applicable to a field of coaptation and repairing after a defect and loss of the mandible caused by injuries or tumors, etc. The individualized mandible prosthesis essentially consists of a substitute of a defected or lost part and connecting and positioning wing spans. The prosthesis is characterized in that the whole mandible of a patient is scanned by a CT or MRI fault scan; after processing the graph and image, soft tissues and hard tissues are separated according to the fault scan graph, thus a three-dimensional reconstruction of the mandible of the patient is realized; according to biological symmetry principle, a model of the unimpaired side of the mandible of the patient is used for a mirror image processing so as to obtain a mandible prosthesis model of the lost side of the mandible of the patient; the data of the prosthesis model are transformed and the connecting and fixing wing spans are designed on the model; a processing order of the model is input into a CNC processing center and the substitute prosthesis of the mandible of the patient is directly cut out. The mandible prosthesis produced by the invention has a good dynamic capacity and biological dynamic characteristics; the problem of an individualized match is directly solved; and the prosthesis is excellently matched with the mandible of the patient.

Description

technical field [0001] The invention relates to the field of biomedical prosthesis, in particular to titanium individual mandibular prosthesis and its preparation process. technical background [0002] Mandibular defect and loss are frequently encountered clinical problems today. There are many symptoms of interruption of mandible continuity due to benign and malignant tumors involving mandibular resection, and others such as trauma and infection. It leads to different degrees of physiological dysfunction and facial deformities in patients. On the other hand, as a load-bearing hard tissue replacement material, it should not only have good mechanical properties, but also have long-term and effective formation of firm and stable retention with living tissues, which is the fundamental guarantee for the realization of replacement and repair functions. Biomedical titanium and titanium alloy implant materials have been widely used as various orthopedic restorations clinically fo...

Claims

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Application Information

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IPC IPC(8): A61F2/28A61L27/06
Inventor 潘留国孙立群
Owner 上海双申医疗器械股份有限公司
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