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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0320340 (1999-05-26) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 435 인용 특허 : 123 |
A device such as a stent is provided with a hybrid coating including a time released, restenosis inhibiting coating and a non-thrombogenic coating to prevent clotting on the device. One first coat or layer includes a polymer, a crosslinking agent, and pacitaxel, analogues, or derivatives thereof. Th
A device such as a stent is provided with a hybrid coating including a time released, restenosis inhibiting coating and a non-thrombogenic coating to prevent clotting on the device. One first coat or layer includes a polymer, a crosslinking agent, and pacitaxel, analogues, or derivatives thereof. The first coat preferably includes a polymer having Taxol admixed therein so as to be releasable over time. The first coat preferably includes a polyfunctional aziridine as the crosslinking agent. The second coat preferably includes heparin to inhibit clot formation on the device. The crosslinking agent can covalently bond to both the first coat polymer and the second coat heparin. A stent can be provided with a first coat including an aqueous dispersion or emulsion of a polymer and an excess of crosslinking agent. The first coating can be dried, leaving a water insoluble polymer coating. A second aqueous coating including a solution or dispersion of heparin can be applied over the first coating, the heparin becoming covalently bound to the crosslinking agent on the first coating surface. The resulting stent can inhibit restenosis while preventing blood clot formation on the stent.
[ What is claimed is:] [1.]1. A stent comprising:a substantially tubular body;a first coating disposed over said body, said first coating including a polymeric material, a first therapeutic agent admixed in said polymeric material, and a crosslinking agent; anda second coating disposed over said fir
[ What is claimed is:] [1.]1. A stent comprising:a substantially tubular body;a first coating disposed over said body, said first coating including a polymeric material, a first therapeutic agent admixed in said polymeric material, and a crosslinking agent; anda second coating disposed over said first coating including a second therapeutic agent, wherein said crosslinking agent binds said second therapeutic agent to said polymeric material.
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