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A kind of carbon fiber composite skull patch and preparation method thereof

A composite material and carbon fiber technology, applied in medical science, prosthesis, etc., can solve problems affecting diagnosis and rehabilitation, affecting patient image and comfort, loosening or dislocation of implants, etc., so as to avoid dark skin effect and easy Effects of operation and alleviating the sense of difference in temperature and comfort

Active Publication Date: 2022-04-08
HUNAN TANKANG BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In contrast, titanium metal is ideal in terms of mechanical properties and biocompatibility, but it still has certain defects: (1) poor mechanical compatibility, uneven stress distribution, loosening or dislocation of implants, local Osteoporosis, bone resorption, fracture, delayed bone healing, etc.
(2) The edge is usually sharp and easy to damage the skin, resulting in the exposure of the implant; (3) The thermal conductivity is high, which can cause discomfort to the patient under large temperature differences
(5) There are artifacts in the medical examination, which will affect the later diagnosis and rehabilitation treatment
If it is directly applied to the skull, it will affect the image and comfort of the patient after being implanted in the human body, and there will be barriers to acceptance by the patient

Method used

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  • A kind of carbon fiber composite skull patch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1) Add 60g / m 2 1k carbon fiber non-woven fabric with 10g / m 2 Carbon fiber nets are cross-laminated (10 layers in total), needle-punched layer by layer to obtain the center layer fabric, and then set the surface density of 140g / m on both the upper and lower surfaces of the center layer fabric 2 1k carbon fiber interwoven cloth, and then set 3 layers of 60g / m on the carbon fiber interwoven cloth 2 1k Carbon Fiber Laid Fabric with 2 layers of 10g / m 2 The carbon fiber mesh is cross-laminated and needle-punched to composite the outer layer to obtain a sheet-like carbon fiber prefabricated body;

[0045] 2) Densify the matrix carbon of the sheet-like carbon fiber preform to obtain a sheet-like carbon fiber composite body; use chemical vapor deposition to generate the matrix carbon process: put the carbon fiber preform into a deposition furnace, and pass in natural gas at a temperature of 1200°C , nitrogen is the diluent gas, the flow ratio of natural gas and nitrogen is 1:...

Embodiment 2

[0050] 1) Add 120g / m 2 3k carbon fiber non-woven fabric with 20g / m 2 The carbon fiber mesh is cross-laminated (8 layers in total), needle-punched layer by layer, and the center layer fabric is obtained, and then the surface density of the center layer fabric is set to 240g / m on the upper and lower surfaces 2 3k carbon fiber interwoven cloth, and then set on the carbon fiber interwoven cloth by 160g / m 2 6k carbon fiber non-woven fabric with 30g / m 2 The carbon fiber mesh cross-lamination (4 layers in total) needle-punched the composite outer layer to obtain a sheet-like carbon fiber prefabricated body;

[0051] 2) Densify the matrix carbon with the sheet carbon fiber prefabricated body to obtain the sheet carbon fiber composite material green body; use chemical vapor deposition to generate matrix silicon carbide process: put the carbon fiber prefabricated body The input gas source (trichloromethylsilane, hydrogen as the carrier gas and diluent gas, the flow ratio of trichloro...

Embodiment 3

[0056] 1) Add 3 layers of 320g / m 2 12k Carbon Fiber Laid Fabric with 2 layers 60g / m 2 The carbon fiber mesh is cross-laminated (5 layers in total), needle-punched and compounded layer by layer to obtain the center layer fabric, and then the surface density of the center layer fabric is set to 360g / m on both the upper and lower surfaces 2 3k carbon fiber interwoven cloth, and then set on the carbon fiber interwoven cloth by 140g / m 2 6k carbon fiber non-woven fabric with 30g / m 2 The carbon fiber mesh cross-lamination (4 layers in total) needle-punched the composite outer layer to obtain a sheet-like carbon fiber prefabricated body;

[0057] 2) Densify the matrix carbon and silicon carbide with the sheet-like carbon fiber prefabricated body to obtain the sheet-shaped carbon fiber composite body; first adopt the process of impregnation-cracking to generate the matrix carbon: the carbon fiber prefabricated body is impregnated with furan resin under vacuum pressure, cured, Cracki...

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Abstract

The invention discloses a carbon fiber composite material skull patch and a preparation method thereof. The skull patch has a sandwich structure, which includes a high-porosity layer, a low-porosity layer and a dense layer from the center to the outside; the high-porosity layer and the low-porosity layer are made of carbon fiber composite materials; the dense layer is PyC coating + ZrO 2 The composite coating of coating + DLC coating, the skull patch is based on carbon fiber fabric, which is obtained by densification and dense coating. The cranial patch has the characteristics of light weight, good biocompatibility, good chemical stability, mechanical properties similar to human bone, low thermal conductivity, no metal artifacts, and bone-like surface, which is especially suitable for cranial repair.

Description

technical field [0001] The invention relates to a skull patch, in particular to a carbon-based composite skull patch and a preparation method thereof, belonging to the technical field of biomedical materials. Background technique [0002] Clinically, acute skull injuries and brain diseases such as skull fractures or breakages, brain tumors, cerebral hemorrhage, cerebrovascular malformations, congenital boneless sutures, and skull deformities require craniotomy and plastic surgery, and artificial skulls are required for skull repair. [0003] Commonly used artificial skull materials include autologous bone, organic polymers, and metals. In contrast, titanium metal is ideal in terms of mechanical properties and biocompatibility, but it still has certain defects: (1) poor mechanical compatibility, uneven stress distribution, loosening or dislocation of implants, local Cause osteoporosis, bone resorption, fracture, delayed bone healing, etc. (2) The edge is usually sharp and e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/83C04B35/524C04B41/89A61L27/10A61L27/08
CPCC04B35/83C04B35/524C04B41/009C04B41/52C04B41/89A61L27/10A61L27/08C04B2235/656C04B2235/658C04B2235/95C04B2235/96C04B2235/9607C04B41/5001C04B41/4531C04B41/5042C04B41/4529C04B41/5002
Inventor 谭周建张翔王斌刘波
Owner HUNAN TANKANG BIOTECH CO LTD