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Carbon-based composite material artificial bone repair material and preparation method thereof

A carbon-based composite material and carbon composite material technology, applied in medical science, tissue regeneration, prosthesis and other directions, can solve the problems of aging of polymer materials, easy metal wear, easy fatigue, etc., to ensure elastic modulus and avoid friction. Abrasion, the effect of reducing thermal conductivity

Active Publication Date: 2021-01-08
HUNAN TANKANG BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are mainly metals, ceramics, and polymer materials as artificial bone implant materials, which mainly have the following problems: metals are prone to wear, fatigue, corrosion, bone resorption, and artifacts in medical images; polymer materials There are deficiencies such as aging, poor creep resistance, toxic reactions, and thrombosis, while ceramic materials have disadvantages such as no plasticity, brittleness, and easy breakage.

Method used

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  • Carbon-based composite material artificial bone repair material and preparation method thereof
  • Carbon-based composite material artificial bone repair material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1) Multi-layer carbon fiber cloth (6k, 160g / m 2 ) and carbon fiber mesh (60g / m 2 ) cross-laminated needle-punched compound to the desired thickness, to obtain a bulk density of 0.4g / cm 3 carbon fiber prefabricated body;

[0043] 2) Densifying the carbon fiber prefabricated body with matrix carbon,

[0044] The process of densifying matrix carbon is chemical vapor deposition: the chemical vapor deposition process conditions: put the carbon fiber prefabricated body into the deposition furnace, and at a temperature of 1100 ° C, pass through a carbon-containing gas source (methane and hydrogen 1:0.5) for deposition , to obtain a porous carbon-based composite blank with a porosity of about 50%;

[0045] 3) The artificial bone defect filling model designed based on the medical imaging data CT processes the sheet blank into a profiling artificial bone body (including preset holes with a diameter of 1.0 mm), specifically as follows figure 1 shape;

[0046] 4) sequentially ...

Embodiment 2

[0055] 1) Multi-layer carbon fiber cloth (1k, 60g / m 2 ) and carbon fiber mesh (40g / m 2 ) cross-laminated needle-punched compound to the desired thickness, to obtain a bulk density of 0.4g / cm 3 It is a carbon fiber prefabricated body;

[0056] 2) The process of densifying the carbon fiber prefabricated matrix carbon and densifying the matrix carbon is an impregnation-cracking process: the carbon fiber prefabricated body undergoes vacuum pressure impregnation, curing treatment, cracking, and other densification processes with phenolic resin. The specific process conditions: impregnation pressure The temperature is 2.0MPa, the impregnation time is 6h; the curing temperature is 200°C, the curing time is 20h; the cracking temperature is 1000°C, normal pressure, the time is 10h, and the porous carbon-based composite material blank with a porosity of about 55% is obtained;

[0057] 3) Put the obtained green body into a high-temperature furnace, and heat it under vacuum or protectiv...

Embodiment 3

[0068] 1) Multi-layer single carbon fiber mesh (60g / m 2 ) laminated needle-punched composite to the desired thickness, to obtain a bulk density of 0.2g / cm 3 It is a carbon fiber prefabricated body;

[0069] 2) The carbon fiber prefabricated body is densified matrix carbon, and the process of densifying matrix carbon is chemical vapor deposition first, and then impregnation-cracking:

[0070] The chemical vapor deposition process conditions: put the carbon fiber prefabricated body into a deposition furnace, at a temperature of 1100° C., feed a carbon-containing gas source (methane and hydrogen 1:0.5), and deposit for 10 hours.

[0071] The impregnation-cracking process includes phenolic resin vacuum pressure impregnation, curing treatment, cracking, and other densification processes. The process conditions: the impregnation pressure is 2.0 MPa, the impregnation time is 6 hours; the curing temperature is 200 ° C, and the curing time is 20 hours; The pyrolysis temperature is 10...

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Abstract

The invention provides a carbon-based composite material artificial bone repair material and a preparation method thereof. The carbon-based composite material artificial bone repair material is prepared by sequentially forming a ceramic layer and a pyrolytic carbon layer on the surface of a carbon-based porous material. The preparation method is that a metal layer and a low-temperature carbon layer are sequentially generated on the surface of a carbon-based porous material matrix of a profiling artificial bone, the metal layer and the low-temperature carbon layer are converted into a ceramic layer by high-temperature heating treatment, then the pyrolytic carbon layer is deposited to obtain an artificial bone repair material with biomimetic form and biomimetic function. The artificial bonerepair material has high internal porosity, low thermal conductivity and low elastic modulus, and the surface composite coating can be used as a developing and blocking layer of an artificial bone contour, and provides a smoother surface and a soft contact surface, so that frictional wear between the hard ceramic inner layer and the autologous bone stump in human body is avoided.

Description

technical field [0001] The invention relates to an artificial bone repair material, in particular to a carbon-based composite material artificial bone repair material and a preparation method thereof, belonging to the technical field of biological material preparation. Background technique [0002] Clinically, artificial bone implantation is an effective means of clinical treatment for anatomical reconstruction of bone defects caused by trauma, tumor, infection and abnormal development. At present, there are mainly metals, ceramics, and polymer materials as artificial bone implant materials, which mainly have the following problems: metals are prone to wear, fatigue, corrosion, bone resorption, and artifacts in medical images; polymer materials There are deficiencies such as aging, poor creep resistance, toxic reactions, and thrombosis, while ceramic materials have disadvantages such as no plasticity, brittleness, and easy breakage. [0003] In recent years, the rapid devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/40A61L27/08A61L27/10A61L27/56A61L27/50
CPCA61L27/08A61L27/10A61L27/56A61L27/50A61L2430/02
Inventor 谭周建张翔王斌刘波蔡志霞
Owner HUNAN TANKANG BIOTECH CO LTD
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