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US 2003/0189003 A1Published application
Leukocyte filter construction
AssigneeTeva Medical Ltd.
InventorsMenahem Kraus, Yefet Gamlieli
Life of this patent
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Abstract
A filter unit for removing leukocytes from a leukocyte-containing suspension by passing the suspension through a filter unit. The filter unit may comprise a main filter for blocking the leukocytes and a post-filter for preventing leakage of the leukocytes having a higher median pore size than the main filter and placed downstream of the main-filter.
Claims25
A filter unit comprising:
- a main filter for blocking leukocytes, said main filter comprising at least one membrane layer;
- and
- a post-filter placed downstream of said main filter having a median pore size higher than the median pore size of said main-filter.
A filter unit comprising:
- a main filter for blocking leukocytes, said main filter comprising at least one membrane layer;
- and
- a post-filter for preventing leakage of said leukocytes, said post-filter comprising at least two layers of non-woven polymer wherein said post-filter is placed downstream of said main filter and has a median pore size higher than the median pore size of said main-filter.
A filter unit comprising:
- a pre-filter;
- a main filter comprising at least one membrane layer;
- and
- a post-filter placed downstream of said main filter and has a median pore size higher than the median pore size of said main-filter.
1 more element
A method for removing leukocytes comprising the step of:
- passing a leukocyte containing suspension through a filter unit including a main-filter for blocking leukocytes and a post-filter located downstream of said main-filter.
Dependencies are inferred from the claim text.