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:
Mar. 20, 1990
Filed:
Mar. 27, 1989
Applicant:
Inventors:
Hiromichi Fukazawa, Fuji, JP;
Kazuhiko Hagiwara, Fujinomiya, JP;
Assignee:
Terumo Kabushiki Kaisha (Terumo Corporation), Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
422 48 ; 21050024 ; 21050027 ; 21032162 ; 55 16 ; 55158 ; 128D / ; 261D / ;
Abstract
In a membrane type artificial lung using as gas-exchange membranes porous hydrophobic membranes having a wall thickness in the range of 5 to 80 .mu.m, a porosity in the range of 20 to 80%, and a pore diameter in the range of 0.01 to 5 .mu.m, the minute pores of the membranes are blocked with minute particles of silica having a diameter smaller than the pore diameter and having a hydrophobic surface at least on the sides thereof intended for exposure to blood. Optionally, the gas-exchange membranes have the surfaces for exposure to blood coated with a biocompatible hydrophobic resin.