Patent application number | Description | Published |
20080264454 | Method for cleaning hollow tubing and fibers - Hollow porous fibers containing adhered contaminants are cleaned to remove the contaminants by backflushing a liquid to fill the pores, and adding a flow of gas so as to form a two-phase mixture of gas and bubbles of liquid that can scrub the fibers, loosening the contaminants and allowing them to be flushed from the hollow fibers. The method is particularly useful for cleaning hemodialyzers used for dialysis and hollow fiber modules used in water treatment and separations. The two phase flow method is specifically effective in cleaning piping systems having high length to diameter (l/d) ratios. | 10-30-2008 |
20100078046 | Apparatus and method for cleaning passageways such as endoscope channels using flow of liquid and gas - Apparatus and methods are disclosed for cleaning interiors of passageways in endoscopes or other luminal medical devices by flow of liquid and gas therethrough. The liquid flow may include rivulets, droplets or other liquid entities which move on the internal surfaces of the passageways, and may include a three-phase contact interface between liquid and dry solid and gas. | 04-01-2010 |
20100078047 | Method and composition for cleaning tubular systems employing moving three-phase contact lines - A method, composition and apparatus for cleaning an internal surface of a narrow diameter channel. The method includes:
| 04-01-2010 |
20120234357 | METHOD FOR COMPOSITION FOR CLEANING TUBULAR SYSTEMS EMPLOYING MOVING THREE-PHASE LINES - A method for cleaning an internal surface of a narrow diameter channel includes steps of flowing a liquid cleaning medium and a gas through the narrow diameter channel under a flow regime that creates surface flow entities in contact with and sliding along the internal surface of the narrow diameter channel, said surface flow entities having three-phase contact lines and associated menisci, said surface flow entities detaching contaminants with which they come in contact from the internal surface of the narrow diameter internal surface of the narrow diameter channel; and rinsing the internal surface of the narrow diameter channel to remove residual liquid cleaning medium and detached contaminants from the channel. | 09-20-2012 |
20120285488 | Apparatus and method for cleaning passageways such as endoscope channels using flow of liquid and gas - Apparatus and methods are disclosed for cleaning interiors of passageways in endoscopes or other luminal medical devices by flow of liquid and gas therethrough. The liquid flow may include rivulets, droplets or other liquid entities which move on the internal surfaces of the passageways, and may include a three-phase contact interface between liquid and dry solid and gas. | 11-15-2012 |
20150096598 | METHOD FOR CLEANING PASSAGEWAYS USING FLOW OF LIQUID AND GAS - Apparatus and methods are disclosed for cleaning interiors of passageways in endoscopes or other luminal medical devices by flow of liquid and gas therethrough. The liquid flow may include rivulets, droplets or other liquid entities which move on the internal surfaces of the passageways, and may include a three-phase contact interface between liquid and dry solid and gas. | 04-09-2015 |
20150343386 | COMPOSITIONS AND METHODS OF CLEANING POLYVINYL PYRROLIDONE-BASED HEMODIALYSIS FILTRATION MEMBRANE ASSEMBLIES - A method and/or a composition relates to cleaning and reprocessing a hemodialysis filtration membrane assembly that employs polyvinylpyrrolidone-containing membranes. The method includes the step of treating the assembly with an aqueous mixture or a gas-liquid mixture having an inorganic base and from 100 to 1,000 ppm of a hypochlorite salt, wherein the mixture has a pH between about 12.0 and about 12.5, an oxidation reduction potential of less than 0.5 volts, a temperature of 40° to 55° C. and wherein the mole % of hypochlorous acid, HOCl, relative to the sum of hypochlorous acid plus hypochlorite anion, —OCl, is less than 0.004%. The composition may be used in such a method. | 12-03-2015 |