Method for applying a lubricious coating to an article
Article and method of sheathing angioplasty balloons
Medical device for insertion into a body
Puncture resistant balloon catheter Patent #: 5290306
ApplicationNo. 310730 filed on 09/22/1994
US Classes:604/103.14, Foldable604/265, With body soluble, antibactericidal or lubricating materials on conduit606/194Inserted in vascular system
ExaminersPrimary: Rosenbaum, C. Fred
Assistant: Van Over, Perry E.
International ClassA61M 029/00
AbstractA medical balloon and catheter in which the balloon (14) is wrapped and folded upon itself tortuously and tightly so outer surfaces (12) contact each other for insertion into the body and in which the balloon is free of bridging and adhesion between abutting surfaces. The balloon has a base of a continuous polymeric surface (10) expandable from a folded, wrapped configuration with surfaces touching each other into a balloon when inflated. A lubricious, biocompatible, hydrogel coating (11) is disposed on the polymeric surface and a thin, lubricious, blood-compatible coating (12) is disposed upon the hydrogel coating and adheres to it to prevent abutting surfaces of the folded polymeric surfaces from adhering to each other during inflation and to prevent delamination of the hydrogel coating and/or rupture of the balloon. Preferably the blood-compatible coating (12) is polyethylene glycol, methoxy polyethylene glycol or mixtures thereof having a molecular weight between about 100 and 20,000 grams per gram mole.