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:
Jan. 04, 1977
Filed:
Apr. 17, 1975
Henry C Geen, Brooklyn, MI (US);
Clarence S Vinton, Ann Arbor, MI (US);
Charles H Franklin, Ann Arbor, MI (US);
Chemotronics International, Inc., Ann Arbor, MI (US);
Abstract
A method for rounding sharp edged tube lips and for cleaning of dialysis units, such as artificial kidneys, of the type where multiple tube ends are sealed in place at end surfaces to be cleaned in the unit, is described. The method involves the transient thermal treatment of the tube lips and the end surfaces adjacent the lips of the unit while the inside of each of the tubes is filled with a noncombustible fluid which shields the tubes from the thermal treatment. The resulting heat-polished rounded tube lips in the unit provide improved dialyzate fluid flow. In artificial kidneys, damage to cells in blood being dialyzed is reduced and reduction of particulate matter introduced into the blood is accomplished.