Plasma filter with laminated prefilter
AssigneeFenwal, Inc.
InventorsJean Marie Mathias, Yves Poubeau
Life of this patent
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Abstract
A plasma filter is provided for separating aggregates and targeted blood cell species from plasma comprising a filter housing with an inlet and an outlet and an internal flow path between the inlet and outlet. A filter media is disposed in the flowpath between the inlet and the outlet for filtering plasma that passes therethrough. The filter media comprises a filter configured to substantially remove targeted blood cell types from the plasma and a prefilter upstream of the filter, the prefilter having at least one reinforcement layer.
Claims20
A plasma filter for separating aggregates and targeted blood cell species from plasma, comprising:
- a filter housing including an inlet and outlet and an internal flow path between the inlet and outlet;
- filter media disposed in the flow path between the inlet and outlet for filtering plasma passing therethrough;
- the filter media comprising (a) a filter configured to substantially remove targeted blood cell types from the plasma and (b) a prefilter upstream of the filter;
- the prefilter including at least one reinforcement layer to which the prefilter is laminated.
A plasma filter for separating aggregates and targeted blood species from plasma comprising:
- a first housing layer;
- a prefilter for removing the aggregates from the plasma;
- first and second filter membranes having pores sized to remove targeted cellular blood species from plasma by exclusion;
- a mesh layer;
- and
- a second housing layer;
- wherein the prefilter is laminated to at least one reinforcement layer.
A plasma filter for separating aggregates and targeted blood species from plasma, the plasma filter comprising:
- a first housing layer;
- first and second filter membranes having pores sized to remove targeted cellular blood species from plasma by exclusion;
- a mesh layer;
- a second housing layer;
- a prefilter for removing the aggregates from the plasma;
- a first reinforcement layer laminated against a first face of the prefilter;
- and
- a second reinforcement layer laminated against a second face of the prefilter.
Dependencies are inferred from the claim text.