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C/C (carbon-carbon) composite material bone fracture plate and preparation method thereof

A composite material and bone plate technology, used in medical science, surgery, coating, etc., can solve the problems of rejection reaction, prone to fiber burrs, surrounding tissue irritation, etc., and achieve good fatigue performance and good biocompatibility. Effect

Inactive Publication Date: 2018-08-17
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, metal bone plates mainly have the following problems in clinical application: (1) there is stress shielding, which easily destroys the blood supply at the fracture site; (2) it is prone to electrochemical reaction corrosion in the body; (3) it cannot directly promote fracture Healing, postoperative complications such as delayed union or nonunion, bone plate fracture, screw loosening and rejection, and rejection are prone to occur; (4) X-ray, CT and MRI examination results of patients are often seriously affected by the metal bone plate, resulting in Inaccurate test results
[0003] Patent document CN2223081Y discloses a carbon fiber-reinforced epoxy resin bone plate, in which carbon fiber woven fabrics soaked in epoxy resin glue are stacked in parallel and cured under pressure. The surrounding tissue after implantation is easily stimulated to produce an inflammatory response
Patent document CN1296013C discloses a carbon fiber-reinforced polyether ether ketone composite bone plate, which is obtained by mixing carbon fiber particles and polyether ether ketone and then injection molding. Since it is injection molding, continuous carbon fibers with a length greater than 2cm cannot be used, nor can A continuously spread structure is obtained, therefore, the reinforcement provided by the carbon fibers is not fully utilized

Method used

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Effect test

Embodiment 1

[0041] A preparation method of the C / C composite bone plate of the present invention, comprising the following steps:

[0042] Cut the 0° non-woven fabric, carbon fiber mesh tire and 90° non-woven fabric into the size of the design block, and cut the cut 0° non-woven fabric, carbon fiber mesh tire and 90° non-woven fabric according to the mechanical structure design requirements The layers are stacked alternately in sequence, and needle-punched carbon fibers are filled between the layers as a reinforcing phase.

[0043] The obtained alternately laminated product is placed on a heating platform for preheating, and two layers of pyrolytic carbon are coated on the alternately laminated product. The thickness of each layer of pyrolytic carbon is 3mm, and the total amount of pyrolytic carbon on the product is The coating amount is 5% of the mass of the product, and the resin carbon is filled outside the pyrolytic carbon layer by the liquid phase impregnation method, and the filling...

Embodiment 2

[0052] A preparation method of the C / C composite bone plate of the present invention, comprising the following steps:

[0053] Cut the 0° non-woven fabric, carbon fiber mesh tire and 90° non-woven fabric into the size of the design block, and cut the cut 0° non-woven fabric, carbon fiber mesh tire and 90° non-woven fabric according to the mechanical structure design requirements The layers are stacked alternately in sequence, and needle-punched carbon fibers are filled between the layers as a reinforcing phase.

[0054] The obtained alternately laminated product is placed on a heating platform for preheating, and two layers of pyrolytic carbon are coated on the alternately laminated product. The thickness of each layer of pyrolytic carbon is 2mm. The total amount of pyrolytic carbon on the product is The coating amount is 6% of the mass of the product, and resin carbon is filled outside the pyrolytic carbon layer by liquid phase impregnation method. The filling amount of resin...

Embodiment 3

[0059] A preparation method of the C / C composite bone plate of the present invention, comprising the following steps:

[0060] Cut the 0° non-woven fabric, carbon fiber mesh tire and 90° non-woven fabric into the size of the design block, and cut the cut 0° non-woven fabric, carbon fiber mesh tire and 90° non-woven fabric according to the mechanical structure design requirements The layers are stacked alternately in sequence, and needle-punched carbon fibers are filled between the layers as a reinforcing phase.

[0061] The obtained alternately laminated product is placed on a heating platform for preheating, and two layers of pyrolytic carbon are coated on the alternately laminated product. The thickness of each layer of pyrolytic carbon is 4mm. The total amount of pyrolytic carbon on the product is The coating amount is 8% of the mass of the product, and resin carbon is filled outside the pyrolytic carbon layer by liquid phase impregnation method. The filling amount of resin...

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Abstract

The invention discloses a C / C composite material bone fracture plate and a preparation method thereof. The C / C composite material bone fracture plate is composed of a C / C composite material base whichis formed by sequentially and alternately overlapping 0-degee non-woven fabric, carbon fiber net blanks and 90-degree non-woven fabric; needled carbon fiber is filled among layers of the C / C composite material base; the surface of the C / C composite material base is covered by a pyrolytic carbon layer; resin carbon is filled outside the pyrolytic carbon layer. The C / C composite material bone fracture plate is high in biological compatibility and fatigue performance, close to human bone in mechanical properties, and free from interference and blocking effects on MRI (magnetic resonance imaging), CT (computed tomography) and X-ray examinations and the like.

Description

technical field [0001] The invention relates to the technical field of biomedical materials, in particular to a C / C composite bone plate and a preparation method thereof. Background technique [0002] Traditional bone plates are mostly made of metal, mainly stainless steel and titanium alloy. However, metal bone plates mainly have the following problems in clinical application: (1) there is stress shielding, which easily destroys the blood supply at the fracture site; (2) it is prone to electrochemical reaction corrosion in the body; (3) it cannot directly promote fracture Healing, postoperative complications such as delayed union or nonunion, bone plate fracture, screw loosening and rejection, and rejection are prone to occur; (4) X-ray, CT and MRI examination results of patients are often seriously affected by the metal bone plate, resulting in The test result is inaccurate. [0003] Patent document CN2223081Y discloses a carbon fiber-reinforced epoxy resin bone plate, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L31/12A61L31/08A61L31/02A61L31/14
CPCA61L31/024A61L31/084A61L31/14
Inventor 肖涛刘立宏于澍
Owner CENT SOUTH UNIV
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