Infusion pump module

Abstract

An infusion pump module for transferring fluid includes a fluid inlet part having an inlet to receive the fluid, a fluid outlet part having an outlet to discharge the fluid, a pump unit having a piezoelectric element, and a flow rate sensor to measure a flow rate of the fluid flowing inside the module, wherein the fluid inlet part, the fluid outlet part, the pump unit, and the flow rate sensor are connected together to cause the fluid received by the fluid inlet part to be discharged from the fluid outlet part, and the fluid inlet part, the fluid outlet part, the pump unit, and the flow rate sensor connected together form a single continuous flow channel.

Description

technical field [0001] The present disclosure generally relates to an infusion pump module provided with a flow sensor to measure the flow of fluid to be delivered. Background technique [0002] In medical procedures, for example, medical solutions for infusion into patients need to be delivered. For this purpose, a fluid transfer pump module is used which includes a piezoelectric element-based pump and an oscillation circuit for driving the piezoelectric element (see, for example, Japanese Patent Application Laid-Open No. 8-303352). In such a fluid transfer pump, a voltage signal having a predetermined frequency is applied to vibrate a piezoelectric element, thereby pushing a medical solution in a flow channel for fluid transfer. [0003] In addition, a flow sensor is connected to a fluid conduit, such as a tube connected to a fluid transfer pump, to control the oscillating circuit based on the flow measured by the flow sensor. This allows control of the fluid flow to be ...

AI Technical Summary

Problems solved by technology

As a result, the size of the system is relatively large, which limits the choice of where the system can be installed

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