Filtration device useable for removal of leukocytes and other blood components
First Claim
1. A liquid filtration device comprising:
- a first chamber having an inlet for receiving unfiltered liquid and being capable of collecting the unfiltered liquid therein;
a second chamber capable of collecting filtered liquid therein, said second chamber being in fluid flow relationship with the first chamber;
means for filtering liquid within the first chamber prior to flowing into the second chamber;
a passage leading from the second chamber into the first chamber for venting air therebetween;
means for preventing liquid within the first chamber from flowing through the passage into said second chamber; and
a first outlet in the second chamber.
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Accused Products
Abstract
A liquid filtration device useable for removing leukocytes from blood contains a first chamber which is in fluid flow relationship with a second chamber. Filtration elements separate the first chamber from the second chamber so that liquid flowing from the first chamber is filtered thereby prior to entry into the second chamber. A passage leads from the second chamber into the first chamber and a hydrophobic filter may be used to prevent liquid from the first chamber from flowing through the passage into the second chamber while allowing air to flow therethrough. An outlet is located in the second chamber, preferably at the bottom thereof. A second outlet may be located within the second chamber and may be placed in fluid flow relationship therewith by a conduit or the like.
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Citations
30 Claims
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1. A liquid filtration device comprising:
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a first chamber having an inlet for receiving unfiltered liquid and being capable of collecting the unfiltered liquid therein; a second chamber capable of collecting filtered liquid therein, said second chamber being in fluid flow relationship with the first chamber; means for filtering liquid within the first chamber prior to flowing into the second chamber; a passage leading from the second chamber into the first chamber for venting air therebetween; means for preventing liquid within the first chamber from flowing through the passage into said second chamber; and a first outlet in the second chamber. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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5. The filtration device of claim 5 wherein said conduit is integrally formed to a housing defining at least one of said chambers.
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28. A filtration device for use in filtering blood comprising:
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a housing; a second chamber and a first chamber each within said housing wherein said first and second chambers are separated by a plurality of leukocyte removing elements; a passage leading from the first chamber into the second chamber; a hydrophobic filter disposed at one end of said passage for preventing blood within the first chamber from flowing through the passage into the second chamber; a first outlet in said second chamber; a second outlet in said second chamber, said first outlet being located below said second outlet; a hydrophilic filter disposed over said second outlet for preventing air from flowing through said second outlet when said hydrophilic filter is wet; and means for placing said first outlet in fluid flow relationship with said second outlet. - View Dependent Claims (29, 30)
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Specification