Biomedical assay device
AssigneeDelsys Pharmaceuticals Corporation
InventorsZvi Loewy, Dennis Lee Matthies
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Abstract
The present invention provides an integrated structural unit that includes a diagnostic form that includes at least one active ingredient that is present in an amount that advantageously does not vary by more than about five percent from a predetermined target amount. In one embodiment, the unit form comprises a substrate, a deposit that is disposed on the substrate, and a spreading layer that overlies the deposit and is used to retain and spread a sample of liquid which is to be assayed. The deposit comprises a powder, including the active ingredient(s). The diagnostic form is created via a dry powder deposition apparatus that electrostatically deposits the powder on the substrate utilizing an electrostatic chuck and charged powder delivery apparatus.
Claims11
A structural unit comprising an integrated diagnostic form, the diagnostic form comprising:
- a polymeric substrate;
- an active ingredient, electrostatically deposited on the surface of said substrate;
- and
- a porous spreading layer electrostatically deposited on the active ingredient, said spreading layer comprising particles of controlled particle size, wherein said spreading layer serves to retain and spread a sample of liquid which is to be diagnosed.
Dependencies are inferred from the claim text.