Fluid testing sensor having vents for directing fluid flow
First Claim
Patent Images
1. A sensor for analysis of a fluid sample comprising:
- a sample cavity for accepting sample fluid;
at least one test region disposed along said sample cavity; and
at least one vent for venting said sample cavity, said at least one vent having at least one sample guide edge for guiding said sample fluid to said at least one test region.
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Abstract
A sensor for analyzing a fluid sample has a sample cavity for accepting sample fluid. At least one test region is disposed along the sample cavity, and at least one vent fulfills the dual function of venting the sample cavity and guiding the sample fluid in the sample cavity via appropriate location and geometry of at least one sample guide edge.
41 Citations
27 Claims
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1. A sensor for analysis of a fluid sample comprising:
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a sample cavity for accepting sample fluid;
at least one test region disposed along said sample cavity; and
at least one vent for venting said sample cavity, said at least one vent having at least one sample guide edge for guiding said sample fluid to said at least one test region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for collecting sample fluid and positioning sample fluid in a test sensor for analysis of said sample fluid the method comprising the acts of:
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accepting said sample fluid within a sample cavity via capillary action; and
directing said sample fluid through said sample cavity toward at least one test region of said sensor using at least one sample guide edge provided on at least one vent venting said sample cavity. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A sensor for analysis of a fluid sample comprising:
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a sample cavity for accepting sample fluid, said sample cavity having an fluid inlet;
first and second vents within said sample cavity, said first and second vents having respective first and second vent edges and being disposed along a fluid pathway of said sample cavity such that said first vent is closer to said fluid inlet than said second vent is;
a first reagent area disposed along said sample cavity beneath said first vent; and
a second reagent area disposed along said sample cavity beneath said second vent. - View Dependent Claims (19, 20, 21, 22)
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23. A method for analyzing a fluid sample comprising:
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accepting said sample fluid within a sample cavity via capillary action, said sample cavity having a fluid inlet and first and second vents disposed along a fluid pathway, said sample cavity further having a first reagent disposed beneath said first vent and a second reagent disposed beneath said second vent, said first and second vents having first and second vent edges;
guiding said fluid sample along said fluid pathway via capillary action such that said fluid passes said first vent before passing said second vent; and
filling said sample cavity such that said sample fluid first fills a first volume beneath said first vent and later fills a second volume beneath said second vent. - View Dependent Claims (24)
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25. A sensor for analysis of a fluid sample comprising:
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a base layer;
an electrode layer supported by said base layer, said electrode having a first electrode and a second electrode, said first and second electrodes respectfully extending from first and second electrode leads and having central portions;
a cover layer disposed above said electrode layer, said cover layer having a projection defining a sample cavity;
a fluid inlet area in fluid communication with said sample cavity; and
first and second vents, said first vent having a first guide edge and said second vent having a second guide edge opposing said first guide edge, said first and second guide edges opposing each other above at least one of said central portions of said first and second electrodes. - View Dependent Claims (26)
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27. A sensor for analysis of a fluid sample comprising:
a sample cavity having a fluid inlet area, said sample cavity adapted for being filled via capillary action and having a vent, said vent having at least one sample guide edge for guiding fluid under capillary action within said sample cavity during filling of said sample cavity.
Specification