Surgery – Miscellaneous
Patent
1999-03-04
2000-04-25
Kamm, William E.
Surgery
Miscellaneous
A61B 1900
Patent
active
060531711
ABSTRACT:
Polymeric tubing having an outer surface with a reduced coefficient of friction. The outer surface is treated by an exposure to a plasma glow discharge in the presence of an inert gas, and by deposition of a monomer during exposure to the plasma glow discharge for a time sufficient to modify the slip characteristics of the surface of the tube. The tube is preferably exposed to plasma glow discharge for a time sufficient to reduce the coefficient of friction by at least 70%. The tubing may be fabricated of silicone rubber, and the monomer deposited may be N-vinyl-2-pyrrolidone.
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N. Nurdin et al., "Reduced Frictional Resistance of Polyurethane Catheter by Means of a Surface Coating Procedure", Journal of Applied Polymer Science, 61, p. 1939-1948 (1996).
Cobian Kenneth E.
Ebert Michael J.
Stewart Mark T.
Kamm William E.
Medtronic Inc.
Patton Harold R.
Woods Thomas F.
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