EP0239174A1
Expired / Lapsed
EP
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Biological diagnostic device
Assignee: FUSIONI;PB DIAGNOSTICS SYSTEMS INC.
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Filing: 1987-03-24
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Granted: —
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Expires: 2007-03-24
Abstract
Abstract A biological diagnostic device and process for efficiently and accurately analyzing for an analyte of interest in a sample of a biological fluid. The device, which in a preferred embodiment is utilized for the analysis of whole blood samples, comprises a diagnostic test element and a sample application unit comprising a filter element and a fluid delivery element which is in fluid contact with the test element. The delivery element comprises a layer having a plurality of grooves, or channels, in the surface thereof which is adjacent the filter element. The fluid which passes through the filter is collected in the grooves of the delivery element and subsequently delivered to the test element.
Inventors
- 👤 Gerd Grenner
- 👤 Jurgen H. Hachmann
- 👤 James J. Manning
- 👤 Hans Erwin Pauly
- 👤 George O. Neely
- 👤 Melitta Staedter
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 03:44
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; G01N33/54366; G01N33/54386; G01N33/54387; G01N33/54388; G01N33/54389; G01N33/52; G01N33/525; G01N33/5302; G01N33/551; G01N33/552
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
72 words
A biological diagnostic device comprising a sample application unit including a fluid delivery element with a plurality of grooves in a surface thereof for providing a path for fluids to flow therealong, and a filter element arranged in fluid contact with said grooves; and at least one diagnostic test element arranged in contact with said surface of said fluid delivery element to receive fluid admitted to said grooves from said filter element.
Claim 2
Dependent Claim
72 words
A biological diagnostic device comprising a sample application unit including a fluid delivery element with a plurality of grooves in a surface thereof for providing a path for fluids to flow therealong, and a filter element arranged in fluid contact with said grooves; and at least one diagnostic test element arranged in contact with said surface of said fluid delivery element to receive fluid admitted to said grooves from said filter element.
Claim 3
Dependent Claim
28 words
The diagnostic device as defined in claim 1 wherein said filter element comprises a layer of fibrous material and is capable of separating cells from plasma or serum.
Claim 4
Dependent Claim
18 words
The diagnostic device as defined in claim 2 wherein said diagnostic test element is a multilayer immunoassay element.
Claim 5
Dependent Claim
21 words
The diagnostic device as defined in claim 2 wherein said fibrous filter material has been treated with deionized gelatin or albumin.
Claim 6
Dependent Claim
19 words
The diagnostic device as defined in claim 2 wherein said fibrous filter material has been treated with a surfactant.
Claim 7
Dependent Claim
19 words
The diagnostic device as defined in claim 2 wherein said fibrous filter material has been treated with a protein.
Claim 8
Dependent Claim
36 words
The diagnostic device as defined in claim 1 wherein said fluid delivery element includes from about 4 to about 50 grooves per cm, said grooves having a depth of from about 0.05 to about 0.160 mm.
Claim 9
Dependent Claim
19 words
The diagnostic device as defined in claim 7 wherein said fluid delivery element comprises a substantially transparent polymeric material.
Claim 10
Dependent Claim
18 words
The diagnostic device as defined in claim 8 wherein said fluid delivery element comprises hydrolyzed cellulose acetate butyrate.
Claim 11
Dependent Claim
15 words
The diagnostic device as defined in claim 1 comprising a plurality of diagnostic test elements.
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