CN213884404U - Carbon fiber rope weaved composite bone plate - Google Patents
Carbon fiber rope weaved composite bone plate Download PDFInfo
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- CN213884404U CN213884404U CN202022160599.9U CN202022160599U CN213884404U CN 213884404 U CN213884404 U CN 213884404U CN 202022160599 U CN202022160599 U CN 202022160599U CN 213884404 U CN213884404 U CN 213884404U
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Abstract
The utility model provides a carbon fiber rope-woven composite bone fracture plate which is composed of a carbon fiber/carbon composite material matrix and a composite coating on the surface of the matrix; the composite coating comprises a carbon-silicon coating, an aluminum oxide coating and a diamond-like coating from bottom to top in sequence; the carbon fiber/carbon composite material matrix is of a curved surface structure. The color of the bone fracture plate is close to that of the autologous bone, the shape is a curved surface, the bone fracture plate is in multi-point contact with the hard tissue of the autologous bone, continuous surface contact is avoided, blood supply of peripheral tissues is facilitated, tissue regeneration is promoted, the surface layer is high in hardness and small in friction coefficient, the bone fracture plate is not easy to damage, carbon-based particles can be blocked from falling off, and the black skin effect is avoided.
Description
Technical Field
The utility model relates to a coaptation board, concretely relates to carbon fiber rope knits combined material coaptation board belongs to biomaterial technical field.
Background
The skeleton is used as the main body of human body for bearing force, and bone-setting material is needed for fracture caused by trauma. The metal material is always the main body of the bone-knitting material due to higher mechanical property, but the metal material has many clinical application problems, such as osteoporosis, fracture and other postoperative complications caused by stress shielding due to overhigh elastic modulus; medical image artifacts are not conducive to post-operative diagnosis; easily corroded and dissolved out toxic ions, and taken out of the implant for secondary operation and the like. In recent years, with the rapid development of composite materials with excellent mechanics, a good opportunity is provided for the inorganic non-metallization of bone-knitting materials. The carbon-based material has good biocompatibility, such as no medical image artifact, no toxic substance release, fiber reinforcement and the like, and shows the biomechanical property matched with the autogenous bone of a human body.
The carbon fiber reinforced composite material bone-knitting material designed in the prior art has some obvious technical problems: for example, in the carbon-ceramic composite bone fracture plate disclosed in chinese patent (CN108171798A), the chopped carbon fibers are distributed in the structural frame in an evenly distributed or unevenly distributed manner, and the surface of the carbon-ceramic composite bone fracture plate is coated with resin carbon, the chopped carbon fibers and the discontinuous long fibers have poor mechanical properties, and are easy to fall off locally. Chinese patent (CN 108577957 a) discloses a carbon/carbon-silicon carbide composite bone plate, which comprises a carbon/carbon composite base material formed by sequentially and alternately laminating 0-degree non-woven fabric, a carbon fiber mesh and 90-degree non-woven fabric, and the surface of the base material is coated with pyrolytic carbon and silicon carbide coatings. The cloth net laminated needling continuous fiber has large damage. The bone fracture plate not only has a smooth surface and is easy to form continuous hard contact with autologous bone tissues, but also presents the characteristic of dark color of the carbon-based material, thereby bringing psychological discomfort to patients.
Disclosure of Invention
The defect that coaptation board exists among the prior art, the utility model aims at providing an use carbon fiber rope to compile fabric composite carbon material as the base member, the surface is equipped with the coaptation board by the carbon-silicon coating, the compound coating that aluminium oxide coating and diamond-like carbon coating constitute, this coaptation board colour is close with autologous bone colour, the appearance is the curved surface, be multiple spot contact with autologous bone hard tissue, continuous surface contact has been avoided, be favorable to the blood supply of peripheral tissue, promote the tissue neogenesis, and top layer hardness is high, coefficient of friction is little, not only be difficult for the damage, and can block droing of carbon back granule, avoid the black skin effect.
In order to realize the technical purpose, the utility model provides a carbon fiber rope-woven composite bone fracture plate which is composed of a carbon fiber/carbon composite material matrix and a composite coating on the surface of the matrix; the composite coating comprises a carbon-silicon coating, an aluminum oxide coating and a diamond-like coating from bottom to top in sequence; the carbon fiber/carbon composite material matrix is of a curved surface structure.
The utility model provides a carbon-silicon coating mainly is as transition coating in the carbon fiber rope weaves combined material coaptation board, because there are carbon fibre and carbon matrix intermittent distribution on carbon fiber/carbon combined material base member surface, is anisotropy, and after depositing the carbon silicon layer, can regard as the transition layer, is favorable to the even deposit of aluminium oxide coating, improves the combining ability of aluminium oxide coating and carbon fiber combined material base member. The aluminum oxide coating is white, has the color similar to that of bones, is beneficial to being accepted by patients, and has better binding capacity with the diamond-like coating, thereby improving the adhesion capacity of the diamond-like coating. The diamond-like coating is used as the outermost layer, has high hardness, small friction coefficient, good biocompatibility, favorable tissue growth and thin film layer, can block the damage and the diffusion of the inner layer, has good transparency and does not shield the color of aluminum oxide.
As a preferred scheme, the carbon-silicon coating is a pyrolytic carbon coating, a silicon carbide coating or a pyrolytic carbon/silicon carbide composite coating. The pyrolytic carbon material, silicon carbide material and pyrolytic carbon/silicon carbide composite material related to the carbon-silicon coating are well known materials in the industry.
Preferably, the thickness of the carbon-silicon coating is 50-200 μm. The carbon-silicon coating is relatively thick, and aims to pave the surface of the carbon fiber/carbon composite material substrate, so that the subsequent uniform deposition of the aluminum oxide coating is facilitated.
As a preferable scheme, the thickness of the aluminum oxide coating is 2-10 μm.
As a preferred scheme, the thickness of the diamond-like coating is 5nm to 50 nm. The diamond-like coating is thin, keeps high transparency and avoids the shielding of aluminum oxide.
Preferably, the carbon fiber/carbon composite material matrix is composed of a carbon fiber rope woven fabric and a carbon material inside the carbon fiber rope woven fabric (the carbon material is distributed on the surface of the carbon fibers and filled between the carbon fibers).
Preferably, the carbon fiber rope fabric is twill fabric, V-shaped fabric or chain-shaped fabric. Twill fabrics are relatively flexible, while V-ribbed fabrics or chain-shaped fabrics are relatively rigid and can be selected according to actual needs.
As a preferable scheme, the surface of the carbon fiber rope-woven composite material bone fracture plate is provided with fixing holes with the hole diameter of 0.5 mm-10 mm. The distribution and the number of the fixing holes are determined according to the requirements in the practical application process.
The utility model provides a preparation method of carbon fiber rope weaving composite material bone plate, including following specific step:
1) twisting a plurality of carbon fiber bundles (such as 1k (k represents one thousand), 1.5k, 3k, 6k, 12k and 24k … …) into ropes, weaving the carbon fiber bundles into fabrics (the shapes of the fabrics are twist-shaped, and specifically comprise twill, V-shaped grains, chains and the like), and preparing the bone fracture plate carbon fiber prefabricated body by using a mold for assistance;
2) the carbon fiber prefabricated body is densified through chemical vapor infiltration and/or liquid immersion to prepare a required carbon fiber/carbon composite material bone fracture plate blank; the process of densifying matrix carbon by chemical vapor deposition comprises the following steps: placing the carbon fiber preform in a deposition furnace, introducing a carbon-containing gas source at the temperature of 850-1300 ℃, and depositing for 20-200 h; the process of impregnating-cracking densified matrix carbon comprises the following steps: sequentially carrying out resin (such as phenolic resin) or asphalt vacuum pressure impregnation, curing and cracking treatment on the carbon fiber preform; the dipping pressure is 1.0MPa to 5.0MPa, and the dipping time is 2h to 10 h; the curing temperature is 160-230 ℃, and the curing time is 10-50 h; the cracking temperature of the resin is 900-1050 ℃, the pressure is normal pressure, and the cracking time is 2-20 h; the cracking temperature of the asphalt is 750-850 ℃, the pressure is 50-200 MPa, and the cracking time is 2-20 h;
3) processing the densified carbon fiber/carbon composite material bone fracture plate blank, wherein the processing comprises cutting an end part or processing a fixing hole and the like, and the aperture size of the fixing hole is 0.5-10 mm; the fixing holes can also be reserved in the preparation process of the carbon fiber prefabricated part, so that the reduction of mechanical properties caused by damage to the carbon fiber/carbon composite bone fracture plate removed in later processing can be effectively avoided;
4) and (3) putting the obtained blank into a high-temperature furnace for treatment, and heating under the conditions of vacuum or protective atmosphere for impurity removal, wherein the treatment conditions are as follows: the temperature is 1500-2300 ℃, and the heat is preserved for 1-10 h (the step can be adopted or not according to the actual selection);
5) preparing a composite coating on the surface of the carbon fiber/carbon composite material bone fracture plate blank to obtain a carbon fiber/carbon composite material bone fracture plate; the composite coating is a pyrolytic carbon layer or/and a silicon carbide layer, an aluminum oxide layer and a diamond-like carbon coating composite structure, and the preparation method comprises the following steps:
the pyrolytic carbon layer is generated by chemical vapor deposition, and the generation conditions are as follows: depositing a gas carbon source (such as methane) for 10 to 50 hours at the temperature of 900 to 1500 ℃;
the silicon carbide layer is produced by chemical vapor deposition under the following conditions: trichloromethylsilane, hydrogen and the like are adopted, and the deposition time is 10 to 50 hours at the temperature of 900 to 1300 ℃;
the aluminum oxide layer is generated by magnetron sputtering, and the generation conditions are as follows: vacuum degree of 1X 10-1Pa～5×10-1Pa; the negative bias voltage of the workpiece is 50V-200V; the Ar flow is 20sccm to 200 sccm; o is2The flow rate is 10sccm to 100 sccm; the purity of the Al target material is 99 wt%, and the power is 1 kw-3 kw; the revolution speed of the material table is 10 r/min-30 r/min; the deposition temperature is 200-300 ℃; the deposition time is 30 min-300 min;
the diamond-like carbon layer is generated by plasma enhanced chemical vapor deposition, and the generation conditions are as follows: vacuum degree of 1X 10-1Pa～5×10-1Pa; the negative bias voltage of the workpiece is 10V-200V; ar flow is 50 sccm-120 sccm; the power of the ion source is 0.5 kW-5 kW; hydrocarbon gas (e.g. CH)4、C2H2Etc.) the flow rate is 10sccm to 500 sccm; the heating temperature is 80-300 ℃; the deposition time is 10 min-60 min.
The utility model provides a carbon fiber rope knits combined material coaptation board mainly used fracture repair used coaptation material.
Compared with the prior art, the utility model provides a beneficial technological effect:
1) the utility model provides a carbon fiber rope knits combined material coaptation board surface is pure white, is close with autologous bone color, easily is accepted by the patient.
2) The utility model provides a carbon fiber rope knits combined material coaptation board top layer hardness is high, and coefficient of friction is little, not only is difficult damaged, can block droing of carbon back granule moreover, avoids the black skin effect.
3) The utility model provides a carbon fiber rope knits combined material coaptation plate surface is the curved surface structure, is the multiple spot contact with autologous bone hard tissue, has avoided continuous face contact, is favorable to the blood supply of peripheral tissue, promotes the tissue neogenesis.
4) The utility model provides a carbon fiber rope composite material coaptation board of weaving has excellent mechanical properties, and is close with autologous bone, and flexural modulus is 3GPa ~ 20GPa, and coefficient of friction < 0.1, and surface hardness is 10GPa ~ 20 GPa.
Drawings
FIG. 1 is a schematic cross-sectional structure view of a bone plate made of carbon fiber rope-woven composite material;
FIG. 2 is a surface weave of a carbon fiber rope fabric;
FIG. 3 is a schematic view of a surface structure of a twill carbon fiber rope-woven composite bone fracture plate;
wherein the content of the first and second substances,
1 is a diamond-like coating, 2 is an aluminum oxide coating, 3 is a carbon-silicon coating, 4 is a carbon fiber/carbon composite material substrate, and 5 is a fixing hole;
a is twill fabric, b is V-grain fabric, and c is chain fabric.
Detailed Description
The following examples are intended to illustrate the present invention in detail with reference to the drawings attached to the specification, and the scope of the present invention is not limited by the examples.
The utility model provides a pair of carbon fiber rope weaves combined material coaptation board specifically is shown as figure 1. Mainly comprises a carbon fiber/carbon composite material matrix and a composite coating on the surface of the carbon fiber/carbon composite material matrix. The composite coating comprises a carbon-silicon coating 3, an aluminum oxide coating 2 and a diamond-like coating 1 from bottom to top in sequence. The carbon fiber/carbon composite material matrix is composed of a carbon fiber rope fabric and a carbon matrix, and the carbon matrix is filled in the carbon fiber rope fabric. The carbon fiber rope fabric mainly has three weaves, the mechanical properties of the fabric obtained through different weaves are different, for example, a in figure 2 is twill fabric which mainly shows flexibility, b and c in figure 2 are respectively V-weave fabric and chain-shaped fabric which mainly show rigidity, and the carbon fiber rope fabric with different weaves is correspondingly selected according to the requirements on different bone mechanical properties. The thickness of the carbon-silicon coating in the composite coating is about 100 mu m, the composite coating can be made of pyrolytic carbon materials, silicon carbide materials or pyrolytic carbon/silicon carbide composite materials, the discontinuity between carbon fibers and a carbon substrate on the surface of a carbon fiber/carbon composite material substrate can be reduced, the deposition of an aluminum oxide coating is facilitated, and the bonding capability between the aluminum oxide coating and the carbon fiber/carbon composite material substrate is improved. The thickness of the aluminum oxide coating is about 6 mu m, the aluminum oxide coating is a color development layer and is close to the color of the bone, and the aluminum oxide coating has better binding capacity with the diamond-like coating and can improve the adhesion capacity of the diamond-like coating. The diamond-like coating is used as the outermost layer, has high hardness, small friction coefficient, good biocompatibility, favorable tissue growth and good transparency, can block the damage and the diffusion of the inner layer, has the thickness of about 20nm, and does not shield the color formation of aluminum oxide. The whole appearance of the carbon fiber rope-woven composite bone fracture plate is of a curved surface structure, can be in multi-point contact with autologous bone hard tissues, avoids continuous surface contact, is favorable for blood supply of new tissues, and promotes growth. The surface of the carbon fiber rope-woven composite material bone fracture plate is provided with a plurality of fixing holes 5 with the aperture of about 1mm, and the carbon fiber rope-woven composite material bone fracture plate is mainly used for fixing bones or tissues.
Claims (6)
1. The utility model provides a carbon fiber rope weaves combined material coaptation board which characterized in that: the composite coating is composed of a carbon fiber/carbon composite material matrix (4) and a composite coating on the surface of the carbon fiber/carbon composite material matrix; the composite coating comprises a carbon-silicon coating (3), an aluminum oxide coating (2) and a diamond-like coating (1) from bottom to top in sequence; the carbon fiber/carbon composite material matrix is of a curved surface structure.
2. A carbon fiber rope-woven composite bone plate according to claim 1, wherein: the carbon-silicon coating is a pyrolytic carbon coating, a silicon carbide coating or a pyrolytic carbon/silicon carbide composite coating.
3. A carbon fiber rope-woven composite bone plate according to claim 1 or 2, characterized in that: the thickness of the carbon-silicon coating is 50-200 mu m.
4. A carbon fiber rope-woven composite bone plate according to claim 1, wherein: the thickness of the aluminum oxide coating is 2-10 mu m.
5. A carbon fiber rope-woven composite bone plate according to claim 1, wherein: the thickness of the diamond-like coating is 5 nm-50 nm.
6. A carbon fiber rope-woven composite bone plate according to claim 1, wherein: the surface of the carbon fiber rope-woven composite material bone fracture plate is provided with fixing holes with the aperture size of 0.5 mm-10 mm.
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| CN202022160599.9U CN213884404U (en) | 2020-09-28 | 2020-09-28 | Carbon fiber rope weaved composite bone plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022160599.9U CN213884404U (en) | 2020-09-28 | 2020-09-28 | Carbon fiber rope weaved composite bone plate |
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| CN213884404U true CN213884404U (en) | 2021-08-06 |
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