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US 2009/0291111 A1Published application
Coating comprising an amorphous primer layer and a semi-crystalline reservoir layer
AssigneeAbbott Cardiovascular Systems Inc.
InventorsFlorencia Lim, Mikael Trollsas, Syed F.A. Hossainy, Stephen D. Pacetti
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Abstract
The present invention provides a coating comprising a reservoir layer comprising a semi-crystalline polymer and a primer layer comprising an amorphous polymer on an implantable device and methods of making and using the same.
Claims24
An implantable device, comprising a coating comprising:
- a reservoir layer comprising a biodegradable semi-crystalline polymer, and
- a primer comprising a biodegradable amorphous polymer,
- wherein the amorphous polymer has a miscibility of at least 5% in the semi-crystalline polymer, and
- wherein the coating has a degradation or absorption rate that within a period of 6 months after deployment of the implantable device, the coating has a mass loss of about 80% or more.
1 more element
A method of fabricating an implantable device, comprising
- forming a coating comprising a semi-crystalline reservoir layer that comprises a biodegradable semi-crystalline polymer and an amorphous primer layer that comprises a biodegradable amorphous polymer,
- wherein the amorphous polymer has a miscibility of at least 5% in the semi-crystalline polymer, and
- wherein the coating has a degradation or absorption rate that within a period of 6 months after deployment of the implantable device, the coating has a mass loss of about 80% or more.
Dependencies are inferred from the claim text.