Abbott Point of Care Inc.

Graham E Garrett

Katrina Petronilla Di Tullio

Sheila Diane Ball

Bruce Hendry

Alain Villeneuve

Jessica Chung

David Sabourin

Vinoth Kumar Govindaraj

The present disclosure relates to analytical testing devices comprising microfluidics and methods for performing an assay on a fluid sample received within the microfluidics, and in particular, to mitigating drift of fluid samples over a sensor by incorporating a bypass channel into the microfluidics. For example, a test cartridge device is provided that includes a fluid sample entry port and holding chamber connected to a bifurcation junction of a sensor channel and a bypass channel. The sensor channel includes an upstream region and a downstream region, and an analyte sensor is in the upstream region. As a cross-sectional area of the bypass channel is greater than the cross-sectional area of the downstream region of the sensor channel, the bypass channel is a preferred path for excess sample flow and pressure, and thus sample drift above the analyte sensor is mitigated.

Cartridge device with bypass channel for mitigating drift of fluid samples

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Ottawa, Canada

Graham E Garrett