[특허]Method for coating stents

[미국특허] Method for coating stents 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61L-033/00
출원번호	UP-0014029 (2008-01-14)
등록번호	US-7556837 (2009-07-15)
발명자 / 주소	Hossainy, Syed F. A.
출원인 / 주소	Advanced Cardiovascular Systems, Inc.
대리인 / 주소	Squire, Sanders & Dempsey, L.L.P.
인용정보	피인용 횟수 : 4 인용 특허 : 67

초록 ▼

An apparatus for coating implantable medical devices, such as stents, and a method of coating stents using the apparatus is also disclosed. The apparatus includes a barrier or barriers for isolating an area of the stent on which a composition for coating a stent is applied. Two coating compositions can be applied simultaneously to a stent by separate nozzles on different sides of a barrier. Cross-contamination of the compositions is prevented by the barrier.

대표청구항 ▼

What is claimed is: 1. A method for coating a stent, comprising: applying a first composition to a first segment of a stent with a first nozzle assembly; and simultaneously with the application of the first composition, applying a second composition to a second segment of the stent with a second nozzle assembly, wherein the first nozzle assembly and the second nozzle assembly are separated by a barrier, wherein the barrier includes an opening through which the stent is positioned. 2. The method of claim 1, wherein the second segment of the stent does not get exposed or significantly exposed to the first composition and wherein the first segment of the stent does not get exposed or significantly exposed to the second composition when both compositions are being applied simultaneously. 3. The method of claim 1, wherein the first composition is different from the second composition in type of polymer, type of therapeutic substance, or concentration of therapeutic substance. 4. The method of claim 1, additionally including simultaneously with the application of the first and second compositions to the stent, applying a third composition by a third nozzle assembly to a third segment of the stent. 5. A method for coating a stent, comprising: applying a first composition to a first segment of a stent with a first nozzle assembly; and simultaneously with the application of the first composition, applying a second composition to a second segment of the stent with a second nozzle assembly, and additionally including with the application of the first and second compositions to the stent, applying a third composition by a third nozzle assembly to a third segment of the stent, wherein the first and second nozzle assemblies are separated by a first barrier and the second and third nozzle assemblies are separated by a second barrier, the second nozzle assembly being positioned between the first nozzle and the third nozzle assemblies, wherein the first and second barriers include an opening through which the stent is positioned. 6. The method of claim 5, wherein the distance between the first barrier and the second barrier is adjustable. 7. The method of claim 1, additionally comprising rotating the stent about the longitudinal axis of the stent. 8. A method of coating a stent, comprising: positioning the stent through a through hole formed in a barrier such that a first surface of the barrier faces one end of the stent and a second surface of the barrier faces an opposing end of the stent; positioning a nozzle relative to the barrier such that the barrier shields a first area of the stent to which a coating substance is not be applied and the barrier does not shield a second area of the stent to which the first coating substance is to be applied; and delivering the coating substance from the nozzle to the second area of the stent. 9. The method of claim 8, further comprising positioning a second nozzle relative to the barrier to allow application of a second coating substance from the second nozzle to the first area of the stent but not the second area of the stent. 10. The method of claim 9, further comprising delivering the second coating substance from the second nozzle to the first area of the stent, and preventing or significantly minimizing cross-contamination of the coating substance from the nozzle and the second coating substance from the second nozzle as the coating substances are applied to the stent.

이 특허에 인용된 특허 (67) 인용/피인용 타임라인 분석

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Jayaraman Swaminathan,INX, Microporous covered stents and method of coating.
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Zepf Robert F. (San Diego CA), Ultraporous and microporous membranes and method of making membranes.
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이 특허를 인용한 특허 (4) 인용/피인용 타임라인 분석

Wang, Yunbing; Castro, Daniel A.; Pacetti, Stephen D., Methods to improve adhesion of polymer coatings over stents.
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Milner, Keith R.; Huser, Matthew S., Spray system and method of making phase separated polymer membrane structures.
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Huang, Bin; Gale, David C.; Castro, Daniel; Limon, Timothy, Surface treatment of a polymeric stent.
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Huang, Bin; Gale, David C.; Castro, Daniel; Limon, Timothy A., Surface treatment of a polymeric stent.
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[미국특허] Method for coating stents 원문보기

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