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US 5,843,380 AGranted
Test sample card with raised rails
AssigneebioMerieux Vitek, Inc.
InventorsJohn Staples, Garry Tegeler, Raymond O'Bear
Life of this patent
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AssigneebioMerieux Vitek, Inc.
InventorsJohn Staples, Garry Tegeler, Raymond O'Bear
Estimating the term…
A test sample card has a fluid passage network provided on both sides of the card to provide for maximum separation distance between adjacent growth wells. The card also has cored sections along its periphery adjacent the wells, which improve the flow of plastic during the molding of the cards. The cored sections control the formation of knit lines in the surface of the card and eliminate knit lines from forming that could potentially bridge adjacent wells. These features, singly and together, combine to produce a card that is essentially immune to cross-talk between adjacent wells, yet permit a greater number of wells in a card of given dimensions. Improved bubble trap features are also provided for the card, including a bubble trap passage having a restriction formed therein. The restriction prevents air bubbles in the bubble trap from migrating back to the growth wells.
A test sample card having a top surface and a bottom surface and a translucent adhesive tape applied to said top and bottom surfaces, a fluid entrance port and first and second end regions and first and second side regions, said body defining a plurality of wells placed between said first and second end regions and said first and second side regions, said body further comprising a top surface and a bottom surface and a fluid channel network connecting said fluid entrance port to said wells;
Dependencies are inferred from the claim text.