Manufacturing method of three-dimensional fixation plate for repairing fracture lower jawbone and three-dimensional fixation plate

A manufacturing method and technology of mandible, applied in the direction of fixator, outer plate, internal bone synthesis, etc., can solve the problem of inability to guarantee retention force and stability, achieve good retention force and stability, and improve accuracy. Effect

Active Publication Date: 2016-12-07
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that in the rigid internal fixation of mandibular fractures, doctors can only choose a two-dimensional fixation system based on experience, and cannot ensure that it matches the patient's bone well to provide good retentio

Method used

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  • Manufacturing method of three-dimensional fixation plate for repairing fracture lower jawbone and three-dimensional fixation plate
  • Manufacturing method of three-dimensional fixation plate for repairing fracture lower jawbone and three-dimensional fixation plate
  • Manufacturing method of three-dimensional fixation plate for repairing fracture lower jawbone and three-dimensional fixation plate

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Effect test

Embodiment 1

[0033] Embodiment 1 The three-dimensional fixation method for repairing the fractured mandible according to the present invention comprises the following steps:

[0034] 1) Construct the biomechanical model 1 of the standard mandible, and establish the stress distribution under the occlusal force in different regions figure 2 , and then formulate the principles of fracture fixation in different regions:

[0035] (1) Select a typical mandible, obtain its CT data, and obtain its three-dimensional surface model (triangular mesh) and solid mesh model (tetrahedral mesh) through medical image processing and model reconstruction;

[0036] (2) Calculate the bone density value of each voxel of the mandible according to the relationship function between the gray value on the CT image and the bone density, and complete the voxel Young's modulus according to the relationship function between the bone density and the Young's modulus The calculation of the solid mesh model is performed, a...

Embodiment 2

[0047] Embodiment 2 The three-dimensional fixation plate constructed according to the three-dimensional fixation method for repairing the fractured mandible described in Example 1 includes a main connecting plate 3 and a plurality of auxiliary connecting plates 4 for connecting the mandibular fracture to be repaired. The main connecting plate 3 is distributed along the direction of the connecting plate with a number of main installation through holes 31 for fixing on the mandible to be repaired, the auxiliary connecting plate 4 is arranged on the side of the main connecting plate 3, and the The auxiliary connecting plate 4 is provided with an auxiliary installation through hole 41 for fixing on the mandible, and the main connecting plate 3 and the auxiliary connecting plate 4 are all attached to the outer surface of the mandible to be repaired. The main connecting plate 3 and the auxiliary connecting plate 4 are affixed to the mandible 5 to be repaired through titanium nails. ...

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Abstract

The invention discloses a manufacturing method of a three-dimensional fixation plate for repairing a fracture lower jawbone and the three-dimensional fixation plate. The manufacturing method comprises the following steps: constructing a biomechanical model of a standard lower jawbone, and making a regional fracture fixation principle; and for the to-be-reconstructed lower jawbone, acquiring CT data of the to-be-reconstructed lower jawbone, conducting three-dimensional reconstruction and manufacturing the three-dimensional fixation plate. The three-dimensional fixation plate comprises a main connecting plate and a plurality of auxiliary connecting plates for connecting the fracture part of the to-be-repaired lower jawbone, wherein both the main connecting plate and the auxiliary connecting plates fit to the outer surface of the fracture part of the to-be-repaired lower jawbone; and the main connecting plate and the auxiliary connecting plates are fixedly connected to the to-be-repaired lower jawbone by virtue of titanium nails. The three-dimensional fixation plate disclosed by the invention has the beneficial effects that the three-dimensional fixation plate, which can achieve good matching with bones of a patient, is good in retention force and stability, so that the accuracy of lower jawbone fracture rigid internal fixation treatment is improved.

Description

technical field [0001] The invention relates to a manufacturing method of a three-dimensional fixation plate for repairing a fractured mandible and the three-dimensional fixation plate. Background technique [0002] The mandible is the largest in volume and area among the maxillofacial bones of the human body, and it is also the only movable facial bone. It is located under the face, so it is very vulnerable to multi-directional violent impacts when it is hit by accidents such as traffic accidents. On the other hand, the mandible is connected with the cranium and jaw through muscles and lacks strong support. Therefore, the mandible is easily fractured when it is impacted, and its incidence accounts for about 72% of the incidence of maxillofacial fractures. The geometric and physiological structure of the mandible determines that different regions have different fracture rates, among which the condyle neck, mandibular angle and mandibular body are the fracture-prone regions. ...

Claims

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Application Information

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IPC IPC(8): A61B17/80
CPCA61B17/8071A61B2017/00526
Inventor 刘云峰范莹莹仵健磊周东
Owner ZHEJIANG UNIV OF TECH
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