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公开(公告)号：US20200171490A1
公开(公告)日：2020-06-04
申请号：US16617864
申请日：2018-05-31
Applicant: BIOSURFIT, S.A.
IPC: B01L3/00
Abstract: A microfluidic liquid handling device is configured for rotation about an axis of rotation to drive liquid flow within the device. The device can include an upstream liquid handling structure, a metering structure and an overflow region. The metering structure is configured to receive liquid from the upstream liquid handling structure. The overflow region is separated from the metering structure by a wall. The wall has a first surface portion on the side of the overflow region which has an extent in a direction perpendicular to the direction of action of the centrifugal force, in a substantially tangential or circumferential direction, relative to the axis of rotation. The first surface portion faces radially outwards. Advantageously, the structure of the wall facilitates accurate metering.
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公开(公告)号：US20200230600A1
公开(公告)日：2020-07-23
申请号：US16634327
申请日：2018-07-27
Applicant: BIOSURFIT, S.A.
IPC: B01L3/00
Abstract: A microfluidic device includes an upstream liquid handling structure to hold a first volume of liquid, a downstream liquid handling structure to hold a second volume of liquid smaller than the first volume and including a vent port. The upstream liquid handling structure is connected to a detection chamber, for supplying liquid to the detection chamber and the detection chamber is connected to the downstream liquid handling structure, for supplying liquid to the downstream liquid handling structure. The downstream liquid handling structure facilitates flow of an aqueous liquid through the detection chamber and into the downstream liquid handling structure by capillary action. The downstream liquid handling structure includes a flow-halting feature to halt the flow of the liquid by capillary action when the downstream liquid handling structure has filled with the second volume of liquid.
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