US 12,214,350 B2
Microfluidic devices
Anna Ohlander, Stockholm (SE); and Gabriel Lenk, Freiburg (DE)
Assigned to Capitainer AB, Solna (SE)
Filed by Capitainer AB, Solna (SE)
Filed on Oct. 23, 2023, as Appl. No. 18/491,983.
Application 18/491,983 is a division of application No. 17/858,300, filed on Jul. 6, 2022, granted, now 11,850,591.
Application 17/858,300 is a continuation of application No. PCT/SE2022/050645, filed on Jun. 28, 2022.
Claims priority of application No. 2150835-3 (SE), filed on Jun. 29, 2021; and application No. 2150836-1 (SE), filed on Jun. 29, 2021.
Prior Publication US 2024/0050947 A1, Feb. 15, 2024
Int. Cl. B01L 3/00 (2006.01); B01L 9/00 (2006.01)
CPC B01L 3/502753 (2013.01) [B01L 3/50273 (2013.01); B01L 3/502738 (2013.01); B01L 9/527 (2013.01); B01L 2200/0605 (2013.01); B01L 2200/0684 (2013.01); B01L 2300/0681 (2013.01); B01L 2300/0867 (2013.01); B01L 2300/126 (2013.01); B01L 2400/0406 (2013.01); B01L 2400/0457 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A microfluidic device configured to sample, meter and collect a metered volume of body fluid for analysis by means of capillary transport, the device comprising:
an inlet section, for receiving the body fluid sample, the inlet section comprising an inlet port;
a metering section configured to receive body fluid from the inlet section and comprising a metering channel, wherein the metering section is arranged to separate a metered volume of body fluid filled in the metering channel; and
an outlet section comprising a cavity between an outlet part of the metering channel and an outlet orifice of the device, a hydrophilic porous bridge element conformable to a shape of the cavity and inserted in the cavity to substantially fill the cavity and the outlet orifice, and a capillary means attached to the outlet section in contact with the hydrophilic porous bridge element.