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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0994515 (1997-12-19) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 382 인용 특허 : 4 |
A protective, biocompatible coating or encapsulation material protects and insulates a component or device intended to be implanted in living tissue. The coating or encapsulation material includes a thin layer or layers of alumina, zirconia, or other ceramic, less than 25 microns thick, e.g., 5-10 m
A protective, biocompatible coating or encapsulation material protects and insulates a component or device intended to be implanted in living tissue. The coating or encapsulation material includes a thin layer or layers of alumina, zirconia, or other ceramic, less than 25 microns thick, e.g., 5-10 microns thick. The alumina layer(s) may be applied at relatively low temperature. Once applied, the layer provides excellent hermeticity, and prevents electrical leakage. Even though very thin, the alumina layer retains excellent insulating characteristics. In one embodiment, an alumina layer less than about 6 microns thick provides an insulative coating that exhibits less than 10 pA of leakage current over an area 75 mils by 25 mils while soaking in a saline solution at temperatures up to 80.degree. C. over a three month period.
[ What is claimed is:] [1.] A biocompatible, insulative coating applied to a component, said insulative coating comprising a layer of alumina, zirconia, magnesium oxide, or alloys of alumina, zirconia or magnesium oxide, deposited on said component so as to form an insulative and protective coating
[ What is claimed is:] [1.] A biocompatible, insulative coating applied to a component, said insulative coating comprising a layer of alumina, zirconia, magnesium oxide, or alloys of alumina, zirconia or magnesium oxide, deposited on said component so as to form an insulative and protective coating that is less than about 25 microns thick, said coating, as applied, exhibiting insulative properties that maintain electrical leakage through said coating to less than about 1 .mu.a/cm.sup.2, whereby said component with said coating applied thereto is implantable;wherein said component comprises a hybrid circuit having a substrate and at least one electrical component mounted on said substrate.
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