An infusion alarm and its control method

Abstract

The invention discloses an infusion alarm and a control method thereof. The infusion alarm comprises a hanging ring, a hanging hook, a power source, a tension sensor, a signal conditioning circuit, a controller, a working panel and a loudspeaker and the like. A control system is mainly configured in a mode that the controller is utilized to compare signals collected by the tension sensor and conditioned by the signal conditioning circuit with a set alarming threshold value; when liquid is going to drip off, output of the tension sensor reaches the set alarming threshold value, and the controller controls the loudspeaker to give out an alarming sound to prompt nursing personnel or accompanying personnel to timely close an infusion device; when mass, of liquid, monitored by the tension sensor is not reduced within two minutes or is reduced by an amount smaller than or equal to 4g, an alarm is also given out to avoid medical accidents caused by influence on dripping or even normal treatment due to the fact that a pipeline of the infusion device is pressed or bent by a patient carelessly. The infusion alarm is low in cost, high in accuracy, small in size, convenient to use, high in reliability and convenient for large-scale application by medical institutions.

Description

technical field [0001] The invention relates to the field of medical monitoring and automatic control, in particular to an infusion alarm and a control method thereof. Background technique [0002] At present, intravenous infusion is an important route of administration in clinical treatment and plays a very important role in treatment. During infusion, the patient needs a nurse, an escort or the patient to check the remaining amount of liquid in the infusion bottle frequently, and replace the liquid or pull out the infusion needle as required. Due to the long infusion time, the patient or the accompanying staff will inevitably be negligent, and cannot find in time that the liquid in the infusion bottle has been emptied, resulting in venous return of blood, causing unnecessary loss and pain, and even threatening the life of the patient. Therefore, the transfusion alarm that can remind automatically when liquid will lose just seems very necessary. [0003] Although the exis...

AI Technical Summary

Problems solved by technology

[0003] Although the existing infusion pumps have relatively comprehensive functions and high precision, the equipment is too expensive, which is not conducive to wide-scale application; Pipeline inclination or air bubbles cause false alarms; the existing infusion alarms modified by spring scales have simple structure and low cost, but the accuracy is too poor; although the existing pressure-guided infusion alarms have simple structure and high accuracy, There is a risk of liquid contamination

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