The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 1987
Filed:
Jan. 09, 1985
Hirotsuga K Yasuda, Newburg, MO (US);
The Curators of the University of Missouri, Columbia, MO (US);
Abstract
A method and apparatus for providing a thin substantially uniform polymeric coating on the inside surface of tubing. Tubing constituted of dielectric material is passed through a glow discharge zone in which the glow discharge is produced by reactance coupling utilizing power provided by a radio frequency power source. Simultaneously with the movement of the tubing through the glow discharge zone, a monomer that is subject to glow discharge polymerization is passed through the glow discharge zone in the interior of the tubing, while a low absolute pressure is maintained in the interior within the zone. Glow discharge polymerization of the monomer is thereby effected to form a thin polymeric coating on the inside surface of the tubing. Also disclosed is a novel tubing constituted of dielectric material and having on the inside surface thereof a thin adherent, substantially uniform coating produced by glow discharge polymerization. Further disclosed is a vascular prosthesis having a barrier layer on the inside surface thereof produced by glow discharge polymerization.