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US 8,462,332 B2Granted
Multi-layer slides for analysis of urine sediments
AssigneeSiemens Healthcare Diagnostics Inc.
InventorsMichael J. Pugia, Henry Lu
Life of this patent
Estimating the term…
Abstract
Visual analysis of urine samples is carried out with the use of a slide consisting of three layers containing an enclosed viewing chamber which receives a urine sample deposited by pipette into an opening on the outer layer of the slide. From the inlet opening the sample enters an inlet chamber in the middle layer and passes through a capillary passageway into the viewing chamber where it is inspected for particles and sediments.
Claims17
A sample slide for visually inspecting samples comprising:
- (a) a base layer of optically clear material;
- (b) a middle layer containing at least one set of cutouts forming a test site, said cutouts forming at least one inlet chamber for receiving a sample, at least one viewing chamber, and at least one hydrophilic capillary passageway in fluid communication between said inlet chamber and said viewing chamber;
- (c) a top layer of optically clear material, said top layer containing cutouts forming openings for introducing said sample into said inlet chamber and for venting air from said viewing chamber;
- wherein said optically clear materials of (a) and (c) have a surface energy relative to the surface energy of said samples such that the particles and sediments are separated and immobilized on the surface of said optically clear materials.
1 more element
A method of visually inspecting samples comprising:
- (d) obtaining a sample;
- (e) introducing said sample of (a) into a sample slide;
- and
- (f) inspecting said sample of (a) within said sample slide;
- wherein said sample slide comprises a base layer of optically clear material having a high surface energy relative to the surface energy of said samples, a middle layer containing at least one set of cutouts forming a test site, said cutouts forming at least one inlet chamber for receiving said sample, at least one viewing chamber, and at least one hydrophilic capillary passageway in fluid communication between said inlet chamber and said viewing chamber;
- and a top layer of said optically clear material, said top layer containing cutouts forming openings for introducing said sample into said inlet chamber and for venting air from said viewing chamber.
3 more elements
Dependencies are inferred from the claim text.