A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 5/15 (2006.01) B01L 3/00 (2006.01) G01N 33/49 (2006.01) G01N 1/28 (2006.01) G01N 21/01 (2006.01) G01N 27/26 (2006.01)
Patent
CA 2324131
A capillary hematocrit separation structure is included within a housing having a fluid inlet port, a reaction region, and a capillary pathway connecting the inlet port and the reaction region. The capillary pathway is dimensioned so that the driving force for the movement of liquid through the capillary pathway arises from capillary pressure. A plurality of obstructions are fixed in the capillary pathway, each obstruction having a concave portion facing toward the vented reaction region on the down stream side of the obstructions as viewed with reference to a liquid flowing from the inlet port to the reaction region. The capillary pathway in a hematocrit separation structure for a single drop sample size includes about 10 5 obstructions, each obstruction including a concave portion having a volume of between about -4 to 10 -5 µl for selectively receiving hematocrit.
Bhullar Raghbir S.
Shelton Jeffrey N.
Wilsey Christopher D.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Roche Diagnostics Corporation
Roche Diagnostics Operations Inc.
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