Plasma modification of lumen surface of tubing

摘要: The lumen surface of tubing is modified by exposure to a gas plasma in vacuum apparatus. A method and apparatus are disclosed whereby treatment the surface, such as deposition polymerizate, may be achieved inside continuous length tubing. monomer vapor caused enter through openings sequentially arranged at periodic interval along tubing, excited state concurrently passes tubular reaction conduit having an inner diameter occlusive contact with tubing's outer diameter. Essentially crack-free polymerizate coatings thicknesses greater than 1000 angstroms selectively deposited on wall Plasma-modified prepared usefulness medical devices catheters, vascular grafts enteral feeding tubes.