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:
Dec. 16, 1980
Filed:
Jun. 14, 1979
Daniel G Holman, Blaine, MN (US);
Robert A Ersek, Bay St. Louis, MS (US);
Arthur A Beisang, Roseville, MN (US);
Other;
Abstract
A method for preparing human and other animal umbilical cords for use as a vascular replacement and/or arterial venous fistula which permits the umbilical cord which is to be grafted to be preformed into a desired predetermined configuration. The method includes roughening the surface of the umbilical cord at the point of juncture with the host tissue, external to the umbilical cord, thereby improving the sealing arrangement at said juncture to allow for puncturing of the graft as well as mechanical retention. Additionally, the method may include the steps of flushing the cord in an aqueous solution either before or after roughening, and then the flushed cord is mounted upon a mandrel having the desired configuration. The roughened and mounted cord may then be immersed in ethyl alcohol until substantially dehydrated, and thereafter fixed in an aldehyde selected from the class consisting of dialdehyde starch and gluteraldehyde, with the aldehyde fixing the roughened tissue into a shape conforming to the mandrel upon which it is mounted.