Structural configuration for transport of a liquid drop through an ingress aperture
First Claim
1. In a liquid transport device comprising an exterior, drop-receiving surface, means interior of said surface for transporting the liquid through a zone, and an ingress aperture comprising an internal sidewall fluidly connecting said surface and said interior transporting means,the improvement wherein at least the intersection of said exterior surface and said sidewall includes at a predetermined location, means for substantially urging a portion of a drop of liquid deposited thereon to move into contact with said sidewall, said urging means including a surface configuration capable of forming a compound meniscus on a contacting liquid drop.
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Accused Products
Abstract
A device is disclosed that includes an ingress aperture which provides improved transport of a drop of liquid, from an exterior surface of the device to the device interior. Means are provided at the intersection of the aperture sidewall and the exterior surface for urging a drop deposited thereon to move into contact with the aperture sidewall and thus into the aperture.
300 Citations
19 Claims
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1. In a liquid transport device comprising an exterior, drop-receiving surface, means interior of said surface for transporting the liquid through a zone, and an ingress aperture comprising an internal sidewall fluidly connecting said surface and said interior transporting means,
the improvement wherein at least the intersection of said exterior surface and said sidewall includes at a predetermined location, means for substantially urging a portion of a drop of liquid deposited thereon to move into contact with said sidewall, said urging means including a surface configuration capable of forming a compound meniscus on a contacting liquid drop.
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6. In a liquid transport device comprising an exterior surface, means interior of said surface for transporting the liquid through a zone, and an ingress aperture comprising an internal sidewall fluidly connecting said surface and said interior transporting means,
the improvement wherein aperture has a transverse cross-sectional shape of a regular hexagon.
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7. In a liquid transport device comprising an exterior surface, a capillary transport zone interior of said surface formed by interior, capillary-spaced surfaces of first and second wall members, one of said wall members including a liquid ingress aperture comprising a sidewall extending from said exterior surface to said transport zone,
the improvement wherein at least the intersection of said exterior surface and said sidewall includes at a predetermined location, means for substantially urging liquid deposited on said surface to move into contact with said sidewall, said means including an interior corner in the aperture sidewall at at least said exterior surface.
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12. In a liquid transport device comprising an exterior, drop-receiving surface, a capillary transport zone interior of said surface formed by interior, capillary-spaced surfaces of first and second members, one of said members including an ingress aperture extending from said exterior surface to said transport zone,
the improvement wherein said aperture comprises from 3 to about 10 distinct sidewalls extending between said exterior surface and said interior surface of said one member, and intersecting to define from 3 to about 10 interior corners.
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19. A test device for radiometric detection of an analyte of a liquid, comprising
a support, a cover member spaced away from the support, one or more layers disposed sequentially on the support and containing at least one reagent composition in at least one of said layers, said composition being capable of producing a radiometrically detectable signal that is proportional to the quantity of the analyte, means for sealing said layers between said support and said cover member with a capillary space between the outermost one of said layers and said cover member, said space being effective to provide capillary flow of liquid between said cover member and said outermost layer, said cover member including a liquid ingress aperture and an air vent aperture spaced away from said access aperture, said ingress aperture having a sidewall extending through said cover member and comprising six surfaces intersecting to form six corners, whereby liquid placed in contact with said cover member at said ingress aperture is urged by said corners to enter the aperture and said capillary space.
Specification