Composite vascular catheter

Details Composite vascular catheter Composite vascular catheter

A - Human Necessities

61

M

128/127.1

A61M 29/02 (2006.01) A61M 25/00 (2006.01)

Patent

CA 1328212

COMPOSITE VASCULAR CATHETER Abstract of the Disclosure An improved vascular catheter having a tubular member of composite structure with a tubular substrate and a resin-impregnated fibrous covering extending over a substantial part of the length thereof. The tubular substrate which is longitudinally flexible but relatively inextendible, is preferably polyimide tubing with a lubricous coating on the inner surface thereof defining an inner lumen. The fibrous covering is preferably epoxy- impregnated aramid or polyester (Dacron)* multi-filament fibers. The strands are snugly wrapped about the tubular substrate and then impregnated with a suitable resin. One or more of the strands in the distal portion are at an angle with respect to the longitudinal axis of the tubular substrate between about 20° and about 45° greater than the angle of one or more strands in the proximal portion. Individual strand wraps in the distal portion are at an angle of about 60° to about 85° and strand wraps in such as the proximal portion are at an angle of about 30° to about 60°. The composite tubular member is preferably utilized in balloon dilatation catheters used in angioplasty procedures. * trade-mark

610302

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