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:
Feb. 15, 1977
Filed:
Dec. 26, 1974
Applicant:
Inventor:
Robert J Petersen, Minneapolis, MN (US);
Assignee:
North Star Research Institute, Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M / ; B01D / ;
U.S. Cl.
CPC ...
2325 / ; 2103 / ; 2105 / ; 128D / ;
Abstract
Fluoroacylation of ethyl cellulose has been found to result in good gas permeability and blood compatibility for polymeric layers made from the resulting fluorinated esters. The fluoroacylated ethyl cellulose has good hydrolytic stability at blood pH and under sterilization conditions (e.g. 100.degree. C). For use in blood oxygenation devices, implantable biomedical devices, blood sampling or analysis or purification devices, etc., it is preferred that the fluoroacylated ethyl cellulose be substantially free of residual OH and have a fluorine content above 10% by weight (e.g. at least about 12% by weight).