Drug-delivery endovascular stent and method for treating restenosis

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United States of America Patent

PATENT NO 8545550
APP PUB NO 20130006350A1
SERIAL NO

13556960

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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 the macrocyclic triene immunosuppressive compound everolimus. 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-dl-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.

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Patent Owner(s)

  • BIOSENSORS INTERNATIONAL GROUP, LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Betts, Ronald E La Jolla, US 46 2770
Savage, Douglas R Del Mar, US 44 2813
Shulze, John E Rancho Santa Margarita, US 30 2029

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