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    REUSABLE FLUID PUMPING DEVICE
    3.
    发明公开
    REUSABLE FLUID PUMPING DEVICE 审中-公开

    公开(公告)号：US20240100246A1

    公开(公告)日：2024-03-28

    申请号：US17951786

    申请日：2022-09-23

    Applicant: CareFusion 303, Inc.

    Inventor： Mohammed Mehtab Khan ,  Karthik MR ,  Saushthav Shrivastava ,  Akshay Srikanth ,  Abhishek Krishnan

    IPC: A61M5/142 ,  A61M39/24 ,  F04B43/02

    CPC classification number: A61M5/14224 ,  A61M39/24 ,  F04B43/02 ,  A61M2205/106

    Abstract: Pump assemblies for use with an IV set are described herein. A pump assembly includes a rotatable crank, a piston rod, and a diaphragm assembly. The crank includes a crank profile defining a plurality of lobes. The piston rod includes a first follower and a second follower spaced apart from the first follower. The rotation of the crank relative to the piston rod causes the piston rod to reciprocate relative to the crank. The diaphragm assembly includes a housing and a diaphragm member. The diaphragm member is coupled to the housing and cooperatively defines a volume in fluid communication with the IV set. The diaphragm member is movable between an extended position configured to draw in fluid from the IV set and a contracted position configured to expel fluid into the IV set. The diaphragm member is coupled to the piston rod to reciprocate the diaphragm member.

    DUAL ACTIVE VALVE FLUID PRESSURE OPERATED POSITIVE DISPLACEMENT PUMP
    6.
    发明公开
    DUAL ACTIVE VALVE FLUID PRESSURE OPERATED POSITIVE DISPLACEMENT PUMP 审中-公开

    公开(公告)号：US20230366388A1

    公开(公告)日：2023-11-16

    申请号：US18225410

    申请日：2023-07-24

    Applicant: SERENNO MEDICAL

    Inventor： Tomer LARK ,  Noam HADAS

    IPC: F04B43/067 ,  A61M5/142 ,  F04B43/14 ,  A61M5/168 ,  F04B7/00

    CPC classification number: F04B43/067 ,  A61M5/14224 ,  F04B43/14 ,  A61M5/16809 ,  A61M2205/12 ,  F04B7/0053

    Abstract: A dual active valve positive displacement pump comprising: A housing holding the pump's components. A piston with an internal cavity divided into two fluidly-isolated volumes by a freely-moving diaphragm, one of the two volumes being fluidly connected with a volume between piston and housing which contains driver pressure from a pressure source. The piston is reciprocally movable inside the housing under positive or negative driver pressure. An active inlet valve operable by driver pressure actuates when the driver pressure is more than the maximum pressure at the pump inlet port. An active outlet valve operable by driver pressure actuates when the driver pressure is less than the minimum pressure at the pump outlet port. The diaphragm separates pumped fluid from operational fluid used to move the diaphragm inside the piston cavity and transmits pressure at the inlet port when the inlet valve is open, and at the outlet port when the outlet valve is open.

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