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AssigneeChem-Elec, Inc.
InventorsPaul R. Kennedy, Ernest C. Adams, William E. Woenke
Estimating the term…
Single or multiple blood plasma component concentrations are measured by a disposable stick having one or more blood plasma component reactive areas covered by a semipermeable membrane which is permeable by blood plasma or serum components and impermeable by blood cellular and particulate matter. A second overlay may be superposed with the semipermeable membrane over the reactive areas to receive a blood sample and meter and distribute that sample uniformly to the semipermeable membrane which in turn passes the plasma components uniformly to the reactive areas. The overlays are subsequently separable from the reactive area to remove the cellular components and particulate matter and expose the reactive areas for inspection by, for example, color comparison to standardized charts.
A blood component level determination stick comprising a supporting strip, a reactive pad disposed on the supporting strip, and a hydrophobic semipermeable membrane with hydrophilic pores formed of an expanded polytetrafluoroethylene material superposed over the reactive pad.
A disposable blood component level measuring arrangement comprising a blood plasma component reactive area, and an overlay formed of a hydrophobic expanded polytetrafluoroethylene containing material which has been treated with a surfactant to make the pores hydrophilic, the overlay being permeable by blood plasma components and impermeable by blood cellular components, the overlay being superposed over the reactive layer to receive a blood sample and subsequently separable therefrom to expose the reactive area for inspection.
A blood cholesterol level determination stick comprising a supporting strip, a reactive pad containing cholesterol oxidase, cholesterol esterase, peroxidase and an indicator material disposed on the supporting strip;
Dependencies are inferred from the claim text.