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US 11,298,662 B2Granted
Filter membrane and device
AssigneeGambro Lundia AB
InventorsBernd Krause, Adriana Boschetti-De-Fierro, Manuel Voigt, Johannes Geckeler, Ferdinand Schweiger
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Abstract
The present disclosure relates to a microporous hollow fiber filter membrane having a large inner diameter and a thin wall. The fiber can be used for sterile filtration of liquids or removal of particles from liquids. The disclosure further relates to a method for producing the membrane and a filter device comprising the membrane.
Claims13
A porous hollow fiber membrane having a sponge-like structure, the membrane comprising a mean flow pore size, determined by porometry, which is larger than 0.2 μm;
- the membrane comprising polyethersulfone and polyvinylpyrrolidone;
- wherein the membrane comprises an inner diameter and a wall comprising a wall strength, wherein
- the inner diameter is from about 2,300 μm to about 4,000 μm;
- and
- the wall strength is from about 150 μm to about 500 μm;
- wherein the inner diameter and the wall strength have a ratio of greater than about 10,
- wherein the membrane does not comprise an active layer on a support layer, and
- wherein the wall of the membrane does not comprise reinforcing fibers.
5 more elements
Dependencies are inferred from the claim text.