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US 12,109,516 B2Granted
High flow, low hold up filters
AssigneeMarin Scientific Development Company
InventorPeter Florez
Life of this patent
Estimating the term…
Abstract
Filter devices with a flow director surrounded by a filter element providing a large filter surface area and low fluid volumes for efficient filtration and high recovery of sample fluids. The filter device can be configured with dimensions and sealing surfaces to functionally interact as a pre-filter for common usage disposable filter flasks.
Claims17
A filter device comprising:
- a filter element surrounding a central axis and comprising a top end, a bottom end, an external filter surface, an internal filter surface, and an internal space between the central axis and internal surface;
- a flow director impermeable to liquids positioned within the internal space and displacing more of the internal space toward the bottom end of the filter than the flow director displaces toward the top of the filter, wherein the flow director occupies more than half of the volume inside the filter element, and wherein a bottom end of the flow director comprises a lateral flange extending out radially, which flange comprises a top surface in sealing contact with the filter bottom end;
- and
- a reservoir hermetically sealed to the filter top end.
1 more element
A filter device comprising:
- a filter element surrounding a central axis and comprising a top end, a bottom end, an external filter surface, an internal filter surface, and an internal space between the central axis and internal surface;
- a flow director impermeable to liquids positioned within the internal space and displacing more of the internal space toward the bottom end of the filter than the flow director dis places toward the top of the filter, wherein the height of the flow director is greater than its width, and wherein a bottom end of the flow director comprises a lateral flange extending out radially, which flange comprises a top surface in sealing contact with the filter bottom end;
- and
- a reservoir hermetically sealed to the filter top end, wherein the reservoir has a volume greater than a volume of the internal space.
1 more element
Dependencies are inferred from the claim text.