Patent · US Active

Dialysis membrane with improved removal of middle molecules

US8651284B2 · kind B2 · utility

1Cited by

10References

6Claims

0Family size

Assignee

Membrana GmbH · DE

Inventors

Friedbert Wechs · Bad Mergentheim, DE
Arne Gehlen · Aschaffenburg, DE
Bodo Von Harten · Wuppertal, DE
Richard Kruger · Wuppertal, DE
Oliver Schuster · Schwelm, DE

Key dates

Filing date	Dec 14, 2009
Grant date	Feb 18, 2014
Priority date	—
Expiry date	Nov 12, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2975
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A hydrophilic semipermeable hollow-fiber membrane for blood treatment, with an integrally asymmetric structure based on a synthetic polymer. The hollow-fiber membrane possesses on its inner surface a separating layer and an adjoining open-pored supporting layer, and has an ultrafiltration rate in albumin solution of 5 to 25 ml/(h·m2·mmHg). The hollow-fiber membrane is free from pore-stabilizing additives and has a maximum sieving coefficient for albumin of 0.005 and a sieving coefficient for cytochrome c that satisfies the equationSCCC≧5·10−5·UFRAlb3−0.004·UFRAlb2+1.081·UFRAlb−0.25.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.