Invention Grant
- Patent Title: Drug-delivery endovascular stent and method of forming the same
- Patent Title (中): 药物输送血管内支架及其形成方法
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Application No.: US10946275Application Date: 2004-09-20
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Publication No.: US07727275B2Publication Date: 2010-06-01
- Inventor: Ronald E. Betts , Douglas R. Savage
- Applicant: Ronald E. Betts , Douglas R. Savage
- Applicant Address: BM Hamilton
- Assignee: Biosensors International Group, Ltd.
- Current Assignee: Biosensors International Group, Ltd.
- Current Assignee Address: BM Hamilton
- Agency: Townsend and Townsend and Crew LLP
- Main IPC: A61F2/82
- IPC: A61F2/82

Abstract:
An intravascular stent and method for inhibiting restenosis, following vascular injury, is disclosed. The stent has an expandable, linked-filament body and a drug-release coating formed on the stent-body filaments, for contacting the vessel injury site when the stent is placed in-situ in an expanded condition. The coating releases, for a period of at least 4 weeks, a restenosis-inhibiting amount of a monocyclic triene immunosuppressive compound having an alkyl group substituent at carbon position 40 in the compound. The stent, when used to treat a vascular injury, gives good protection against clinical restenosis, even when the extent of vascular injury involves vessel overstretching by more than 30% diameter. Also disclosed is a stent having a drug-release coating composed of (i) 10 and 60 weight percent poly-di-lactide polymer substrate and (ii) 40-90 weight percent of an anti-restenosis compound, and a polymer undercoat having a thickness of between 1-5 microns.
Public/Granted literature
- US20050038505A1 Drug-delivery endovascular stent and method of forming the same Public/Granted day:2005-02-17
Information query
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