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US 7,115,299 B2Granted
Balloon catheter for delivering therapeutic agents
AssigneeAdvanced Cardiovascular Systems, Inc.
InventorLyudmila Kokish
Life of this patent
Estimating the term…
Abstract
A method for making a drug delivery device, wherein a composition is applied onto a porous inflatable member, the porous inflatable member integrated at a distal end of a catheter-based device, and the composition including a coating material, a first fluid and a second fluid, wherein the second fluid is a poorer solvent for the coating material than the first fluid, and wherein the second fluid evaporates less rapidly than the first fluid.
Claims24
A method for making a drug delivery device, comprising:
- applying a composition onto an outer surface of a porous inflatable balloon, the porous inflatable balloon secured at a distal end of a catheter-based device, and the composition including a polymer, a first fluid and a second fluid, wherein the second fluid is a poorer solvent for the polymer than the first fluid, and wherein the second fluid evaporates less rapidly than the first fluid;
- and
- drying the composition to produce a microporous coating on the porous inflatable balloon,
- wherein the pores of the porous inflatable balloon are of a size to permit drug delivery wherein the inner surface of the microporous coating is in intimate contact with a majority of the outer surface of the balloon.
1 more element
A method of coating a drug delivery device, comprising:
- spraying a composition onto a surface of an inflatable balloon secured with a catheter, the balloon having a plurality of holes for delivering a drug to a body vessel and the composition including a polymer, a first fluid and a second fluid, wherein the second fluid is a poorer solvent for the polymer than the first fluid, and wherein the second fluid evaporates less rapidly than the first fluid;
- and
- allowing the first and second fluids to evaporate to form a microporous coating,
- wherein the holes of the balloon are of a size to permit drug delivery,
- wherein the inner surface of the microporous coating is in intimate contact with a majority of the outer surface of the balloon so as not to include a gap between the microporous coating and the balloon.
2 more elements
Dependencies are inferred from the claim text.