Method for coating catheter lumens
First Claim
1. A method for producing a thin coating of a covalently bonded polymer coating on the interior of an elongated tubular member, which process comprises the steps of:
- a.) supplying an elongated tubular member having an outer surface and an inner lumen which elongated tubular member is composed of a polymeric material sufficiently uv-transparent to allow cross-linking of a uv-cross-linkable polymer or oligomer on said inner lumen,b.) applying a dilute solution or suspension of a solvent and a uv-cross-linkable polymer or oligomer to the inner lumen of said elongated tubular member to form a sheet comprising said solvent and polymer or oligomer,c.) removing at least a substantial portion of the solvent from the sheet, andd.) curing said polymer or oligomer by ultraviolet radiation passing from the outer surface of said elongated tubular member to said inner lumen so to covalently bond said polymer to the lumen of said elongated tubular member.
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Accused Products
Abstract
This invention is in the general field of surgical instruments and, in particular, catheters. Specifically, it relates to procedures for coating the interior surfaces of surgical devices with a cross-linkable lubricious polymer, preferably one which is hydrophilic. These catheters may be variously used in cardiovascular and endovascular procedures to deliver diagnostic, therapeutic, or vaso-occlusive agents or devices to a target site within a human or animal body and to catheters used to guide other catheters to a particular site in that body. The interior of the catheters are coated using the noted procedure in such a way that the interior is exceptionally slippery and very durable.
170 Citations
11 Claims
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1. A method for producing a thin coating of a covalently bonded polymer coating on the interior of an elongated tubular member, which process comprises the steps of:
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a.) supplying an elongated tubular member having an outer surface and an inner lumen which elongated tubular member is composed of a polymeric material sufficiently uv-transparent to allow cross-linking of a uv-cross-linkable polymer or oligomer on said inner lumen, b.) applying a dilute solution or suspension of a solvent and a uv-cross-linkable polymer or oligomer to the inner lumen of said elongated tubular member to form a sheet comprising said solvent and polymer or oligomer, c.) removing at least a substantial portion of the solvent from the sheet, and d.) curing said polymer or oligomer by ultraviolet radiation passing from the outer surface of said elongated tubular member to said inner lumen so to covalently bond said polymer to the lumen of said elongated tubular member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification