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A carbon fiber and polyetheretherketone composite bone plate and preparation method thereof

A polyetheretherketone and bone plate technology, which is used in surgery, coating, medical science and other directions, can solve the problems of carbon fiber reinforcement not fully functioning, modulus mismatching with natural bone, hidden dangers of biological toxicity, etc., and achieve good results. X-ray penetration, improved biosafety, suitable for mass production

Active Publication Date: 2019-12-31
XIAMEN HOWER MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Traditional bone plate materials are stainless steel and titanium alloy; they have the following problems: 1. The mechanical properties, such as modulus, do not match with natural bone. If the gap is too large, it will cause stress shielding, bone resorption, bone inflammation, and then secondary surgery; 2. Long-term implantation, the dissolution of metal objects will cause cytotoxicity; 3. X-rays cannot penetrate, which affects the follow-up inspection of postoperative recovery; 4. Since it is a metal object, MRI detection cannot be performed after implantation
In this method, the epoxy resin system will inevitably introduce a curing agent. If the curing agent is not completely reacted, there will be potential biological toxicity after implantation.
Patent application CN104902832A discloses a bone-synthesizing device, which is prepared by overmolding or dual-material injection. Since it is injection molding, it is impossible to use continuous carbon fibers with a length greater than 2 cm and obtain a continuous spread structure. Therefore, the role played by carbon fibers Enhancement not fully working

Method used

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  • A carbon fiber and polyetheretherketone composite bone plate and preparation method thereof
  • A carbon fiber and polyetheretherketone composite bone plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1: Preparation of carbon fiber and polyether ether ketone composite bone plate

[0053] Proceed as follows:

[0054] 1. Preparation of composite block materials of polyetheretherketone (PEEK) and carbon fiber cloth;

[0055] 1.1 Cut the appropriate carbon fiber cloth size according to the shape of the block mold, and electrostatically spray PEEK on the single-layer carbon fiber cloth. The form of carbon fiber cloth can be unidirectional carbon fiber cloth or woven carbon fiber cloth; the woven carbon fiber cloth can be 1K Or 3K structure; among them, PEEK can be amorphous or crystalline, and the particle size distribution range is 10-200 μm; further, the weight ratio of PEEK and CF is 1:0.2; further, the parameters of electrostatic spraying are as follows: the processing temperature range is 380 -400℃, treatment time 3-30min, can be repeated many times until the designed weight ratio is reached;

[0056] 1.2 Place the single-layer carbon fiber cloth sprayed wi...

Embodiment 2

[0066] Example 2: Preparation of carbon fiber and polyether ether ketone composite bone plate

[0067] Proceed as follows:

[0068] 1. Preparation of composite block materials of polyetheretherketone (PEEK) and carbon fiber (CF);

[0069] 1.1 Cut the appropriate CF size according to the shape of the block mold, and electrostatically spray PEEK on the single-layer CF. The form of CF can be unidirectional carbon fiber cloth or woven carbon fiber cloth; the woven carbon fiber cloth can be 1K or 3K structure ; Among them, PEEK can be amorphous or crystalline, and the particle size distribution range is 10-200 μm; further, the weight ratio of PEEK and CF is 1: 4; further, the parameters of electrostatic spraying are as follows: the processing temperature range is 380-400 ° C , the processing time is 3-30min, which can be repeated many times until the designed weight ratio is reached;

[0070] 1.2 Place the CF single-layer cloth sprayed with PEEK layer by layer in the mold, the sp...

Embodiment 3

[0080] Example 3: Preparation of carbon fiber and polyether ether ketone composite bone plate

[0081] Proceed as follows:

[0082] 1. Preparation of composite block materials of polyetheretherketone (PEEK) and carbon fiber (CF);

[0083] 1.1 Cut the appropriate CF size according to the shape of the block mold, and electrostatically spray PEEK on the single-layer CF. The form of CF can be unidirectional carbon fiber cloth or woven carbon fiber cloth; the woven carbon fiber cloth can be 1K or 3K structure ; Among them, PEEK can be amorphous or crystalline, and the particle size distribution range is 10-200 μm; further, the weight ratio of PEEK and CF is 1:1; further, the parameters of electrostatic spraying are as follows: the processing temperature range is 380-400 ° C , the processing time is 3-30min, which can be repeated many times until the designed weight ratio is reached;

[0084]1.2 Place the CF single-layer cloth sprayed with PEEK layer by layer in the mold, the spec...

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Abstract

The invention discloses a composite bone plate of carbon fiber and polyether-ether-ketone and a preparation method thereof. The preparation method comprises the following steps: electrostatically spraying polyether-ether-ketone on each layer of carbon fiber cloth, overlapping the carbon fiber cloth in a mold layer by layer, closing the mold, performing mold pressing, cooling and opening the mold to take a product out, cleaning the product with a solvent, drying the product to obtain a block material, and performing CNC (Computer Numerical Control) machining on the block material according to a bone plate design drawing to obtain a bone plate blank; performing bio-safe coating treatment on the surface of the obtained bone plate. The bone plate has high biocompatibility; a biological coating is adopted, so that the biological security of medical implanting is enhanced; mechanical parameters are equivalent to those of a skeleton, so that the strength of the bone plate is closer to actual bone strength, the problem of adaption is solved, and the stress shielding effect caused by stress concentration is avoided; the bone plate has high X-ray penetrability, and is suitable for batch production.

Description

technical field [0001] The invention relates to the field of orthopedic materials, in particular to a carbon fiber and polyether ether ketone composite bone plate and a preparation method thereof. Background technique [0002] Traditional bone plate materials are stainless steel and titanium alloy; they have the following problems: 1. The mechanical properties, such as modulus, do not match with natural bone. If the gap is too large, it will cause stress shielding, bone resorption, bone inflammation, and then secondary surgery; 2. Long-term implantation, the dissolution of metal objects will cause cytotoxicity; 3. X-rays cannot penetrate, which affects the follow-up inspection of recovery after surgery; 4. Since it is a metal object, MRI detection cannot be performed after implantation. [0003] PEEK (polyether ether ketone) plastic raw material is an aromatic crystalline thermoplastic polymer material with a melting point of 334°C. It has high mechanical strength, high temp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L31/12A61L31/06A61L31/02A61L31/10A61L31/14C08J7/04C09D161/16C09D127/18C08L61/16C08K7/06
CPCA61L31/024A61L31/06A61L31/10A61L31/14C08J7/0427C08J2361/16C08J2427/18C08J2461/16C08K7/06C09D127/18C09D161/16C08L61/16C08L27/18
Inventor 蔡锦云李步龙谢容泉官江全
Owner XIAMEN HOWER MATERIAL
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