BIODEGRADABLE METALLIC SURFACE MODIFICATION STENT HAVING CORROSION PREVENTION PERFORMANCE

PROBLEM TO BE SOLVED: To provide a stent which is made of a biodegradable metallic material and which has long-term durability.SOLUTION: A stent excellent in corrosion resistance is provided by coating a surface of a biodegradable metallic material inferior in corrosion resistance with a hydrophobic...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAHATA NOBUYUKI, SASAKI MAKOTO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a stent which is made of a biodegradable metallic material and which has long-term durability.SOLUTION: A stent excellent in corrosion resistance is provided by coating a surface of a biodegradable metallic material inferior in corrosion resistance with a hydrophobic adhesive film (particularly an adhesive film made of an acidic hydroxyl group-containing compound). The hydrophobic adhesive film is characterized as follows: its thickness is 1 μm or less; and the weight of the adhesive film made of the acidic hydroxyl group-containing compound falls within the range of 1/500 or more with respect to the weight of the biodegradable metallic material.SELECTED DRAWING: Figure 1 【課題】生分解性の金属材料のステントにおいて、長期に渡る耐久性を有するステントを提供する。【解決手段】耐食性の劣る生分解性の金属材料表面に、疎水性接着膜（とくに、酸性水酸基含有化合物からなる接着膜）を被覆することにより、耐食性の優れたステントを提供するものである。疎水性接着膜は厚さ１μｍ以下、酸性水酸基含有化合物からなる接着膜の重量が、生分解性の金属材料の重量に対して、１／５００以上の範囲内にあることが特徴である。【選択図】図１