Patent · US Active

Membranes having improved performance

US8827087B2 · kind B2 · utility

2Cited by

4References

7Claims

0Family size

Assignee

GAMBRO LUNDIA AB · SE

Inventors

Bernd Krause · Liederbach, DE
Carina Zweigart · Schömberg, DE

Key dates

Filing date	May 19, 2010
Grant date	Sep 9, 2014
Priority date	—
Expiry date	Jul 8, 2031

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D71/76
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Permselective asymmetric membranes suitable e.g. for hemodialysis, hemodiafiltration and hemofiltration of blood, and having improved sieving characteristics providing enhanced removal of middle molecular weight substances, e.g. inflammatory mediators having a molecular weight between 20 and 40 kDa. The membranes comprise polyethersulfone and polyvinylpyrrolidone and are coated with hyaluronic acid or copolymers of 2-methacryloyloxyethyl phosphoryl choline and other vinyl polymerizable monomers. Processes for the preparation of these membranes, devices comprising these membranes, and the use of these membranes in hemodialysis, hemodiafiltration and hemofiltration of blood, as well as in bioprocessing, plasma fractionation and the preparation of protein solutions.

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