Skull repairing patch and preparation method thereof

A technology for repairing pieces and skulls, applied in ceramic products, other household appliances, applications, etc., can solve problems such as high thermal conductivity, loose or dislocated implants, and delayed bone healing, and achieve good biocompatibility and chemical stability Good sex, the effect of improving binding ability

Active Publication Date: 2019-12-24
HUNAN TANKANG BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In comparison, titanium alloys are ideal in terms of rigidity, strength, plasticity, and biocompatibility, but they have certain defects: (1) Poor mechanical compatibility, uneven stress distribution, loosening of implants or Dislocation, 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
Carbon materials have good biocompatibility and have been applied in many aspects of biomedicine. However, there are no related reports on the successful design and preparation of skull repair pieces using carbon materials in the prior art.

Method used

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  • Skull repairing patch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1) Put a layer of 3k carbon fiber plain weave cloth (area density 200g / m 2 ) and a layer density of 20g / m 2 The carbon fiber non-woven fabric is laminated, and it is formed and riveted by needle punching in the thickness direction to obtain a carbon fiber cloth, and then the surface density is 300g / m by weft knitting of 6k twisted carbon fiber 2 The carbon fiber knitted cloth is laminated with a layer of carbon fiber cloth, and the riveting is formed by needling in the thickness direction, and the surface density of the riveting points is 10 points / cm 2 , forming a carbon fiber prefabricated body through mold-assisted molding;

[0045] 2) Put the carbon fiber prefabricated body into a vacuum furnace, and at a temperature of 1000 ° C, feed natural gas, use nitrogen as the dilution gas, and the flow ratio of natural gas and nitrogen gas is 1:0.5. After cracking, the chemical vapor phase penetrates into the carbon fiber blank , after 40 hours, a carbon fiber composite bo...

Embodiment 2

[0049] 1) A layer of 1k carbon fiber twill cloth (area density 140g / m 2 ) and a layer density of 30g / m 2 The carbon fiber non-woven fabric is laminated, and it is riveted by needle punching in the thickness direction to obtain a carbon fiber cloth, and then the surface density is 500g / m by weft knitting of 1k twisted carbon fiber 2 The carbon fiber knitted cloth is laminated with a layer of carbon fiber cloth, and the riveting is formed by needling in the thickness direction, and the surface density of the riveting points is 20 points / cm 2 , forming a carbon fiber prefabricated body through mold-assisted molding;

[0050] 2) Put the carbon fiber prefabricated body into a vacuum furnace first, and at a temperature of 1200°C, pass in methane, use nitrogen as the dilution gas, and the flow ratio of methane to nitrogen is 1:0.2. After cracking, the chemical vapor phase infiltrates the carbon fiber blank , after 30 hours, a carbon fiber composite blank was prepared. Then, the ca...

Embodiment 3

[0054] 1) Put a layer of 6k carbon fiber satin cloth (area density 280g / m 2 ) and a layer density of 20g / m 2 The carbon fiber non-woven fabric is laminated, and it is formed and riveted by needle punching in the thickness direction to obtain a carbon fiber cloth, and then the surface density of 400g / m is obtained by weft knitting of 3k twisted carbon fiber 2 The carbon fiber knitted cloth is laminated with a layer of carbon fiber cloth, and the riveting is formed by needling in the thickness direction, and the surface density of the riveting points is 15 points / cm 2 , forming a carbon fiber prefabricated body through mold-assisted molding;

[0055] 2) The carbon fiber prefabricated body is subjected to densification processes such as phenolic resin vacuum pressure impregnation, curing treatment, and cracking. The impregnation pressure is 3.0MPa, and the impregnation time is 7 hours; the curing temperature is 220°C, and the curing time is 20 hours; the cracking temperature is...

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Abstract

The invention discloses a skull repairing patch and a preparation method thereof. The skull repairing patch is formed by laminating one layer of carbon fiber knitted fabric and one or two layers of carbon fiber cloth, wherein the carbon fiber cloth is formed by overlapping carbon fiber woven cloth and carbon fiber non-woven cloth; matrix carbon and / or silicon carbide are / is filled between the carbon fibers of the carbon fiber knitted fabric and the carbon fiber cloth. The skull repair patch has the characteristics of light weight, good biocompatibility, good chemical stability, mechanical properties similar to those of human bones, good fatigue, strong designability, no artifacts and the like, and is particularly suitable for skull repair.

Description

technical field [0001] The invention relates to a skull patch, in particular to a carbon fiber composite skull patch and a preparation method thereof, belonging to the technical field of biomedical materials. Background technique [0002] Craniocerebral defects with a diameter greater than 3 cm due to trauma, infection, tumor, surgery, etc. may produce clinical symptoms. In order to keep the cranial cavity closed, restore the patient's shape, and avoid physiological abnormalities, skull repair surgery is required. [0003] The materials used for cranioplasty mainly include autologous bone, artificial polymers, metals and other materials are commonly used materials for cranioplasty. In comparison, titanium alloys are ideal in terms of rigidity, strength, plasticity, and biocompatibility, but they have certain defects: (1) Poor mechanical compatibility, uneven stress distribution, loosening of implants or Dislocation, local osteoporosis, bone resorption, fracture, delayed bo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/565C04B35/80C04B35/83C04B38/00C04B41/87A61L27/02A61L27/08A61L27/12A61L27/56
CPCC04B35/83C04B35/565C04B38/0032C04B41/009C04B41/5048C04B41/87A61L27/08A61L27/12A61L27/025A61L27/56C04B2235/48C04B2235/5256C04B2235/5248C04B2235/96A61L2430/02C04B35/803C04B41/457
Inventor 谭周建
Owner HUNAN TANKANG BIOTECH CO LTD
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