FLUID DELIVERY DEVICE WITH PASSIVE PRESSURE EQUILIBRATION

    公开(公告)号:US20240058813A1

    公开(公告)日:2024-02-22

    申请号:US17891636

    申请日:2022-08-19

    Abstract: A fluid delivery device is configured to create a pressure differential across a compartment in which a liquid resides, causing the liquid to flow through the compartment. After a period of time, the fluid delivery device is configured to eliminate the pressure differential and thereby equilibrate the pressure across the compartment, with the use of a pressure equilibration channel that is separate from the compartment. The compartment may contain a packed bed of solid phase particles such as beads. In such case, the pressure differential causes the liquid to flow through the packed bed. The liquid may include chemical reagents or precursors that participate in chemical reactions on or at the solid phase particles. The reactions may relate to chemical synthesis, for example the synthesis of bio-chemicals such as nucleotides.

    Microfluidic devices
    9.
    发明授权

    公开(公告)号:US11833513B2

    公开(公告)日:2023-12-05

    申请号:US17858309

    申请日:2022-07-06

    Applicant: Capitainer AB

    Abstract: A microfluidic device comprising: an inlet section, for receiving a body fluid sample, the inlet section comprising an inlet port arranged to receive a supply of body fluid; a metering function configured to receive body fluid from the inlet section and comprising a first channel; and a sequent section configured to receive the body fluid from the metering function and comprising a second channel, wherein the first channel comprises a capillary stop valve configured to interrupt or reduce flow of the body fluid therethrough, and a means for visual inspection arranged adjacent to the capillary stop valve, wherein a geometry and/or dimension of the inlet port is configured such that when the supply of body fluid to the inlet port is removed, the Laplace pressure of a body fluid meniscus at the inlet port is higher than a threshold pressure of the capillary stop valve.

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