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10-26-2016

Hollow Fiber Membrane Blood Purification Device

Picture: Hollow Fiber Membrane Blood Purification Device (© European Patent Office)

An object of the present invention is to provide a hollow-fiber membrane blood purification device having an improved antioxidant performance, good water permeation performance and blood compatibility performance, and economic rationality. The present invention provides a hollow-fiber membrane blood purification device including hollow-fiber membranes filled in a vessel, in which the hollow-fiber membranes contain a hydrophobic polymer, a hydrophilic polymer and a fat-soluble vitamin, when a hollow-fiber membrane bundle is divided into five sections in a lengthwise direction and divided sections positioned in endmost portions are defined as body end portions, an amount of the fat-soluble vitamin present in at least one of the body end portions is the largest among amounts of the fat-soluble vitamin present respectively in all the divided sections, and an amount of the fat-soluble vitamin per m 2 of a hollow-fiber membrane inner surface of the at least one body end portion is 20 mg/m 2 or more and 300 mg/m 2 or less.

Document: EP3085400A1
Click here for the full patent text at DEPATISnet [PDF]
Published patent application
Disclosure date: 12-16-2014
Publication date: 10-26-2016
Applicant: ASAHI KASEI MEDICAL CO LTD, JP
Inventor: HATA YOSUKE, JP ; HORI RYOKO, JP ; KAWAKAMI JUNYA, JP


© European Patent Office. This information was obtained from the espacenet of the European Patent Office. There is no guarantee of its correctness or curency. For additional information, please use the research at espacenet. It is possible to determine the current legal and procedural status of patents and utility patents/models at http://worldwide.espacenet.com/ kfree of charge.

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