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:
Oct. 28, 2008
Filed:
Aug. 26, 2004
Kimihiro Mabuchi, Shiga, JP;
Noriyuki Tamamura, Osaka, JP;
Hidehiko Sakurai, Shiga, JP;
Noriko Monden, Shiga, JP;
Shinya Koyama, Shiga, JP;
Hiroshi Shibano, Osaka, JP;
Katsuaki Kuze, Shiga, JP;
Katsuhiko Nose, Osaka, JP;
Kimihiro Mabuchi, Shiga, JP;
Noriyuki Tamamura, Osaka, JP;
Hidehiko Sakurai, Shiga, JP;
Noriko Monden, Shiga, JP;
Shinya Koyama, Shiga, JP;
Hiroshi Shibano, Osaka, JP;
Katsuaki Kuze, Shiga, JP;
Katsuhiko Nose, Osaka, JP;
Toyo Boseki Kabushiki Kaisha, Osaka, JP;
Abstract
The present invention provides a highly water permeable hollow fiber membrane type blood purifier for medical use, which is excellent in safety and module-assembling ease and which has a high water permeability suitable for use in therapy of chronic renal failure. The present invention relates to a highly water-permeable hollow fiber type blood purifier comprising hydrophobic polymer hollow fiber membranes each of which contains a hydrophilic polymer, characterized in that the amount of the hydrophilic polymer eluted from the hollow fiber membrane is 10 ppm or less; in that the ratio of the hydrophilic polymer in the outer surface of the hollow fiber membrane is 25 to 50 mass %; in that the burst pressure of the hollow fiber membrane is 0.5 MPa or higher; and in that the coefficient of water permeability of the blood purifier is 150 ml/m/hr./mmHg or higher.