US 12,064,566 B1 · Lumen coating method and apparatus

Abstract

A method for coating the lumen of a tube comprises the steps of inserting the distal opening of a tube into a first coating solution, drawing the first coating solution into the lumen of the tube, draining the first coating solution from the lumen leaving a film of the first coating solution on the lumen of the tube, and curing the first coating solution. This leaves a first coating on the lumen of the tube. A coating apparatus comprises a pallet, and one or more dip funnels. The pallet comprises a manifold and is configured to fluidically connect the manifold to one or more tubes. The one or more dip funnels are configured to hold a coating solution and are located below the pallet so that when the pallet is moved vertically, the one or more tubes are inserted into the dip funnels.

Claims13

Dependent claims

A method for coating the lumen of a tube comprising the steps of:

inserting the distal opening of the tube into a first coating solution,
drawing the first coating solution into the lumen of the tube,
draining the first coating solution from the lumen leaving a film of the first coating solution on the lumen of the tube,
curing the first coating solution, wherein the first coating solution comprises a mixture of polyaziridine and either polyurethane or polyacrylate,
inserting the distal opening of the tube into a second coating solution,
drawing the second coating solution into the lumen of the tube,
draining the second coating solution from the lumen leaving a film of the second coating solution on the lumen of the tube, and
curing the second coating solution, wherein the second coating solution comprises polysaccharide and/or polyacrylic acid.

5 more elements

Dependencies are inferred from the claim text.

Lumen coating method and apparatus

Life of this patent

Lumen coating method and apparatus

Life of this patent

Abstract

Claims13