Method for preparing biological-material integrally-implanted type ear cartilage bionic carriage

A biomaterial and implantable technology, which is used in the repair of maxillofacial deformities, plastic surgery and rapid prototyping, can solve the problems of insufficient elasticity, high hardness and high price

Inactive Publication Date: 2003-03-26
TSINGHUA UNIV +1
View PDF0 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the fixed model design, this product cannot be customized for repair
Moreover, the appearance of its products is quite different from that of Chinese patients.
Its expensive cost can reach 50% to 60% of the entire repair cost, which is also unaffordable for Chinese patients
The artificial cartilage is made of polyethylene material, which has high hardness and insufficient elasticity
[0007] Methods such as silicone rubber and allograft cartilage sculpting have also been reported, prone to prolapse and immune problems
[0008] The disadvantage of the above method is that the shape or color of the artificial ear obtained is quite different from the original ear, which affects the wearing effect.
Imported materials are expensive and cannot achieve the symmetry of the restoration result with a healthy ear

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1 Obtain the pinna data of the patient's healthy left ear with a CT machine.

[0024] 2 Reconstruct the CT slice file to obtain a three-dimensional model. The model is mirrored and trimmed as necessary to obtain the right ear data model.

[0025] 3 Place the 3D model horizontally and layer it along the height direction with a layer thickness of 0.3mm.

[0026] 4 Plan the scanning path and filling path of the two-dimensional graphics obtained by layering, and compile the NC code.

[0027] 5. Send the NC code layer by layer to the rapid prototyping machine.

[0028] 6 The rapid prototyping machine melts and accumulates the polyurethane material on the specified outline according to the numerical control instructions. A monolithic, elastic implantable ear cartilage scaffold is obtained. In this case, a nozzle is installed on the rapid prototyping machine.

Embodiment 2

[0030] 1 The patient in this case had bilateral external ear deformity. Referring to the shape of their parents' auricles, select similar data from existing CT images.

[0031] 2 Reconstruct the CT slice file to obtain a three-dimensional model of both ears.

[0032] 3 Place the 3D model horizontally and layer it along the height direction with a layer thickness of 0.3mm.

[0033] 4 Plan the scanning path and filling path of the two-dimensional graphics obtained by layering, and compile the NC code.

[0034] 5. Send the NC code layer by layer to the rapid prototyping machine.

[0035] 6 The rapid prototyping machine sticks the coated paper layer by layer according to the numerical control instructions, cuts along the prescribed contour, and obtains the three-dimensional solid model of the ear cartilage bracket. In this case, a laser head is installed on the rapid prototyping machine.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The preparation method of biological material integrally-implanted ear soft bone bionic support includes the following steps: 1. preparing laminate image of reference auricle contour; 2. restructuring said image to obtain three-D entity model; 3. layering said three-D entity model to obtain two-D graph of every layer; 4. coding every layer two-D graph to obtain digital control code; 5. inputting digital control code of every layer two-D graph into quick forming machine; and 6. using the quick forming machine to make hierarchical piling and hierrarchical cutting according to the inputted digital control codes so as to obtain the invented ear soft bone support.

Description

technical field [0001] The invention relates to a preparation process of an integrally implanted ear cartilage bionic bracket, which belongs to the field of maxillofacial deformity repair, plastic surgery and rapid prototyping Background technique [0002] Microtia is a congenital deformity that affects physical and mental health. It is usually recommended to have plastic surgery before school age to reduce the psychological pressure of patients after entering society. The current repair methods are as follows: [0003] Wearable: A prosthesis that does not have to be inserted into the body. This prosthesis is not convenient enough to use because it needs to be worn. Due to poor fixation stability, the prosthetic ear deviates from the ideal position, making the decorative effect worse. Moreover, due to the difficulty in color matching, it is difficult to be completely consistent with the patient's skin. After long-term use, indicators such as color and toughness will chan...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/02A61F2/28
Inventor 颜永年张人佶史廷春林峰吴任东熊卓卢清萍祁鹏郭戈唐果林颜旭涛
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap