FLUID FLOW SYSTEM FOR BUBBLE AND FLUID DETECTION

    公开(公告)号:US20240082511A1

    公开(公告)日:2024-03-14

    申请号:US18517379

    申请日:2023-11-22

    IPC分类号: A61M5/36 G01N29/032

    摘要: A fluid flow system and a method for detecting air bubble and liquid are provided. The fluid flow system comprises a force sensor configured to monitor at least one of an air bubble or an occlusion in a flow tube. The fluid flow system comprises a controller to execute the method. The controller is configured to monitor an output signal of a force sensor of the fluid flow system, and the output signal comprises an Alternating Current (AC) component and a Direct Current (DC) component, and detect a change in the output signal to a new output signal based on a number of transitions to the new output signal, and a time duration of the new output signal. The controller compares the change in the output signal with one of a predefined number of transitions or a predefined time and determines a new threshold when the change in the output signal exceeds one of the predefined number of transitions or the predefined time.

    SYSTEM FOR REGULATING PRESSURE IN AN INTRAVENOUS FLUID SUPPLY

    公开(公告)号:US20240091439A1

    公开(公告)日:2024-03-21

    申请号:US18460007

    申请日:2023-09-01

    IPC分类号: A61M5/172 A61M5/142

    摘要: A system for regulating the pressure of an intravenous fluid supply is provided. An example intravenous fluid supply system may include an intravenous fluid supply tube supplying intravenous fluid to a patient from an intravenous fluid supply bag. A pressure may be applied to the intravenous fluid supply bag by a pressure bag adjacent to the intravenous fluid supply bag. A pump may be fluidly connected to the pressure bag, such that a fluid may be pumped into the pressure bag, applying pressure to the intravenous fluid supply bag. The system may further include a pressure sensor positioned to measure a pressure within the intravenous fluid supply tube. The intravenous fluid supply may include a controller communicatively connected to the pressure sensor and the pump, wherein the controller regulates an output of the pump based at least in part on one or more measurements of the pressure sensor.

    MINIATURE SIZE FORCE SENSOR WITH MULTIPLE COUPLING TECHNOLOGY

    公开(公告)号:US20200025634A1

    公开(公告)日:2020-01-23

    申请号:US16041467

    申请日:2018-07-20

    IPC分类号: G01L1/18

    摘要: Example systems, apparatuses and methods are disclosed for sensing a force applied by an external source. An example system comprises a substrate comprising a plurality of electrical contact pads disposed on a first surface of the substrate. The system further comprises a force sensing device disposed on a second surface of the substrate, the second surface opposite the first surface. The system further comprises a housing disposed on the second surface of the substrate. The housing defines an aperture that provides a common coupling interface. The common coupling interface provides a common path for the force to be transmitted to the force sensing device either through a first coupling or a second coupling different from the first coupling.

    FLUID FLOW SYSTEM FOR BUBBLE AND FLUID DETECTION

    公开(公告)号:US20220409825A1

    公开(公告)日:2022-12-29

    申请号:US17444620

    申请日:2021-08-06

    IPC分类号: A61M5/36 G01N29/032

    摘要: A fluid flow system and a method for detecting air bubble and liquid are provided. The fluid flow system comprises a force sensor configured to monitor at least one of an air bubble or an occlusion in a flow tube. The fluid flow system comprises a controller to execute the method. The controller is configured to monitor an output signal of a force sensor of the fluid flow system, and the output signal comprises an Alternating Current (AC) component and a Direct Current (DC) component, and detect a change in the output signal to a new output signal based on a number of transitions to the new output signal, and a time duration of the new output signal. The controller compares the change in the output signal with one of a predefined number of transitions or a predefined time and determines a new threshold when the change in the output signal exceeds one of the predefined number of transitions or the predefined time.

    FLUID SENSOR FOR BUBBLE AND OCCLUSION DETECTION

    公开(公告)号:US20220373372A1

    公开(公告)日:2022-11-24

    申请号:US17324187

    申请日:2021-05-19

    IPC分类号: G01F1/66

    摘要: A fluid sensor for monitoring a flow tube of a fluid flow system is provided. The fluid sensor comprises a housing to hold a portion of the flow tube, and the housing defines a first cavity, a second cavity, a first fixture and a second fixture. The fluid sensor comprises an ultrasonic transducer disposed within the first cavity and a force sensor disposed within the second cavity. The ultrasonic transducer has an emitting face to emit ultrasonic signals, and the emitting face is configured to face the portion of the flow tube. The first fixture extends along a boundary of the first cavity and the second fixture extends along a boundary of the second cavity.