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Preparation method of personalized skull dummy

A technology for prosthesis and skull, applied in the direction of prosthesis, bone implants, medical science, etc., can solve the problems of rough edges of titanium mesh, affecting surgical operation, soft tissue stimulation, etc., to restore the function of the nervous system and achieve repair function, reducing soft tissue irritation and the effect of

Active Publication Date: 2013-06-05
李长安
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods solve the above-mentioned time-consuming and inaccurate problems caused by manual shaping of the titanium mesh, a common defect of this method is that the edge of the trimmed titanium mesh will leave rough and sharp borders
For the doctor, it will affect the operation, and for the patient, it may cause irritation or damage to the soft tissue

Method used

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  • Preparation method of personalized skull dummy
  • Preparation method of personalized skull dummy
  • Preparation method of personalized skull dummy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] For patients with one side of the skull defect and the opposite side of the skull intact, the following methods are used to prepare a personalized skull prosthesis:

[0045] Computed tomography (CT) was used to obtain image data of the patient's skull, and the scanning interval was 1.5 mm. The acquired image data is stored on a computer-readable medium using the standard DICOM file format.

[0046] The CT image data in DICOM format was imported into the digital 3D medical image interactive processing software Mimics for data reading, segmentation and 3D reconstruction, and the gray threshold range of skull extraction was 226-2786. After the three-dimensional modeling of the skull, the mirror function of Mimics is used to symmetrically copy the healthy side of the skull to the defect site, and then use the transparency function to make the shape and edge of the defect visible, and use the polyhedron segmentation function to cut and separate the restoration model along th...

Embodiment 2

[0052] For patients with bilateral skull defects, the following methods are used to prepare individualized skull prostheses:

[0053] Computed tomography (CT) was used to obtain the patient's skull image data, and the scanning interval was required to be 1.5mm. The acquired image data is stored on a computer-readable medium using the standard DICOM file format.

[0054] The CT image data in DICOM format was imported into the digital 3D medical image interactive processing software Mimics for data reading, segmentation and 3D reconstruction, and the gray threshold range of skull extraction was 226-2786. After the skull is three-dimensionally shaped, it is exported in STL file format and imported into 3-Matic software. Outline the area of ​​the skull defect with curved lines. An arcuate curve that defines the height and shape of the prosthesis is then designed at the defect site. 3-Matic software's advanced resurfacing tools automatically create cranial prostheses.

[0055] ...

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Abstract

The invention discloses a personalized skull dummy and a preparation method thereof. In the personalized skull dummy, a medicinal metal material is used as a substrate, and a plurality of meshes are arranged on the substrate. The invention is characterized in that: the personalized skull dummy has a smooth profile edge; and the profile of the personalized skull dummy is matched with the profile of the defective part of the skull of a patient. The drawback that the edge of the skull metal dummy is coarsened when the edge profile of a skull metal dummy is trimmed after the three-dimensional forming of the skull metal dummy is accomplished in the prior art is overcome. The invention also discloses a preparation method of the personalized skull dummy, which comprises: acquiring the data on the skull image of a patient; performing the computer-based three-dimensional reconstruction of the skull and the computer-assisted design of the skull dummy; outputting dummy curved surface data output; acquiring a corresponding two-dimensional plane of the three-dimensional curved surface by computing; designing the skull dummy with the personalized profile by using the two-dimensional plane graphwith the specific edge profile; processing and forming the metal dummy; and the like.

Description

technical field [0001] The invention belongs to the field of neurosurgical skull repair, in particular to a personalized skull prosthesis for replacing skull defect bones and a preparation method thereof. Background technique [0002] In the field of neurosurgery, when the following traumas or diseases occur, the skull needs to be resected and repaired: A. Head trauma; B. Intracranial infection or tumor; C. Cerebral edema or increased intracranial pressure; D. Skull deformity, etc. . In order to restore the airtightness of the cranial cavity and prevent further neurological symptoms after skull defect, skull defect repair is required. [0003] Due to the good biocompatibility, non-toxicity and high strength of pure titanium, titanium alloy and other materials, they are more suitable for the repair of skull defects caused by craniocerebral injury, intracranial tumor surgery or decompressive craniotomy. universal application. However, a problem that has always existed in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/28A61B17/56A61L27/04A61L27/06A61L31/02
CPCA61F2/28A61F2002/30001
Inventor 李长安
Owner 李长安
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