Control system for medical transfusion alarm

Abstract

The invention discloses a control system for a medical transfusion alarm. The control system comprises a control module, a liquid drop detection circuit, a liquid level detection circuit, a transfusion locking module and an audible and visual alarm module, wherein a liquid drop infrared emitting diode and a liquid drop infrared receiving diode are connected with the liquid drop detecting circuit; a liquid level infrared emitting diode and a liquid level infrared receiving diode are connected with the liquid level detection circuit; a buzzer and an LED (Light-emitting Diode) are arranged in the audible and visual alarm module; an electromagnetic valve is arranged in the transfusion locking module; a detection signal is fed back to the control module by the liquid drop detection circuit and the liquid level detection circuit; the control module sends out a control signal to the transfusion locking module and the audible and visual alarm module. The control system provided by the invention is simple and easy to operate, accurate in alarming control, capable of alleviating the anxious mood of a patient waiting for the end of the transfusion to a large extent, and beneficial for the recovery of the patient, and can reduce the working intensity of nursing personnel.

Description

technical field [0001] The invention relates to a monitoring and alarm control system, in particular to a control system of a medical transfusion alarm. Background technique [0002] When the existing infusion device alarm is infused normally through the infusion device, the external pressure of the cavity is larger than that when there is no liquid. Set an appropriate starting torque as the threshold. When the pressure in the cavity decreases, the alarm circuit is activated and an alarm is issued. However, this system relies on the detection principle of cavity pressure and needs to use a relatively delicate and complex structure. At the same time, the softness of the material of the medical infusion set will change due to the influence of temperature. If it is not set properly, false alarms or even no alarm will occur; another example is a liquid weight detection device composed of a mechanical electromagnetic induction system. When the liquid in the infusion bottle is red...

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Problems solved by technology

[0002] When the existing infusion device alarm is infused normally through the infusion device, the external pressure of the cavity is larger than that when there is no liquid. Set an appropriate starting torque as the threshold. When the pressure in the cavity decreases, the alarm circuit is activated and an alarm is issued. However, this system relies on the detection principle of cavity pressure and needs to use a relatively delicate and complex structure. At the same time, the softness of the material of the medical infusion set will change due to the influence of temperature. If it is not set properly, false alarms or even no alarm will occur; another example is a liquid weight detection device composed of a mechanical electromagnetic induction system. When the liquid in the infusion bottle is reduced to the set weight (such as 50 ml), the weight sensor is connected, the alarm control circuit is connected, and the alarm sounds to let the patient and accompanying family members know that the liquid in the bottle is about to be infused; but this method of judging whether the infusion is about to end by weighing The system is mainly designed for glass bottles with relatively high mass. For medicines in plastic bags, especially small doses of medicines, the alarm will be given in advance, and even the medicine will not be called because the weight of the medicine is less than the design weight.

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