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Method For Treating Surface Of Material, Surface-Treated Material, Medical Material, And Medical Instrument

a technology for treating surface and material, applied in the field of treating surface of material, surface-treated material, medical material, medical material, etc., can solve problems such as degrading material itself, and achieve excellent biocompatibility

Inactive Publication Date: 2007-09-06
TOYO ADVANCED TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a method for modifying the surface of a material with a diamond-like carbon film (DLC film) stably grafted with a functionality component, typically a biocompatible material. The DLC film is smooth and inert, making it difficult to modify with a functionality component. The invention solves this problem by coating the surface of a base material with a DLC film and then grafting a polymer to the surface of the DLC film. The resulting material has excellent biocompatibility and persistent functionality. The invention also provides a medical material with persistent, excellent biocompatibility. The DLC film is stable and does not separate from the surface of the base material, suppressing deterioration of the base material. The invention allows for the introduction of various biocompatible molecules to the surface of the DLC film and can be used for various medical applications.

Problems solved by technology

Further, certain environments degrade the material itself.

Method used

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  • Method For Treating Surface Of Material, Surface-Treated Material, Medical Material, And Medical Instrument
  • Method For Treating Surface Of Material, Surface-Treated Material, Medical Material, And Medical Instrument
  • Method For Treating Surface Of Material, Surface-Treated Material, Medical Material, And Medical Instrument

Examples

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example

[0072] Hereinafter, the present invention is described in more detail along with an example but is not limited to this example in any respect.

[0073]—Coating with DLC Film—

[0074] Coating of a DLC film over the base material is first described. In this example, an aluminum alloy (equivalent to JIS-8021 alloy) having a length of 50 mm, a width of 5 mm, and a thickness of 55 μm and polyethylene terephthalate (PET) were used for the base material.

[0075]FIG. 1 is a schematic view of an ionic vapor deposition apparatus used in this example. The ionic vapor deposition apparatus is a commonly-employed ionic vapor deposition apparatus wherein benzene (C6H6) gas is introduced as a carbon source into a DC arc discharge plasma generator 2 provided inside a vacuum chamber to generate plasma, and the generated plasma is collided with a substrate 1 biased to a negative voltage, which is a subject of the coating, whereby the plasma is solidified over the substrate 1 to form a film.

[0076] The base...

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Abstract

A diamond-like carbon film (DLC film) is formed on the surface of a base material made of an inorganic material, such as ceramics, or the like, or an organic material, such as resin, or the like. The surface of the resultant DLC film is treated with plasma, or the like, so as to be activated. Various monomers having biocompatibility, etc., are graft-polymerized to the activated surface of the DLC film, whereby a polymer layer is formed from the monomers grafted to the surface of the DLC film. Thus, the base material coated with the DLC film modified with a polymer which does not readily separate can be realized.

Description

TECHNICAL FIELD [0001] The present invention relates to a method for treating the surface of a material with a diamond-like carbon film formed thereon, a surface-treated material, a medical material having excellent biocompatibility, and a medical instrument. BACKGROUND ART [0002] The diamond-like carbon film (DLC film) has a hard, fine and inert surface. Therefore, when formed on the surface of a material, for example, an inorganic material, such as a metal, ceramic, etc., or an organic material, such as a resin, etc., the DLC film can give the surface of the material certain characteristics, such as abrasion resistance, corrosion resistance, surface smoothness, etc. [0003] For example, it has been known that coating the surface of a mold or tool with a DLC film improves the durability and releasability. Further, the coating creates a very smooth and inert surface and therefore has been a promising surface treatment for materials of medical instruments which should not cause intera...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B32B27/38C23C16/00A61F2/00A61F2/24A61F2/30A61F2/82A61L27/00A61L27/30A61L29/00A61L29/10A61L31/00A61L31/08A61M25/00A61M25/09A61M25/14A61M29/00A61M29/02C01B31/02C01B31/06C23C16/26C23C16/56
CPCA61F2310/0058A61L27/303A61L29/103C23C16/56C01B31/065C23C16/26A61L31/084C01B32/28Y10T428/31504Y10T428/31511Y10T428/3154A61F2/30A61L27/00
Inventor ABE, YOSHINORINAKATANI, TATSUYUKIOKAMOTO, KEISHISHIRAISHI, KOHEISUGIYAMA, KAZUO
Owner TOYO ADVANCED TECH CO LTD
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