Improved transfusion alarm and use method thereof

Abstract

The invention relates to an improved transfusion alarm and a use method thereof. The transfusion alarm comprises a liquid level detection device and an alarming device, wherein the liquid level detection device comprises a puncture needle body, a prism, a first optical fiber, a second optical fiber and an optical fiber connecting head; and the alarming device comprises an optical fiber connecting seat, a light emitting diode, a photosensitive diode, a signal amplification circuit, a reference voltage circuit, a comparison circuit, a singlechip microcomputer, a sound-light alarm circuit, an electronic switch, a peripheral circuit and the like. The improved transfusion alarm is simple in structure, safe and reliable, low in manufacturing cost and convenient to use, and is suitable for mass production and large-scale use, and the working amount of nurses is not increased; a photoelectrical principle is used to detect the liquid level; the optical fibers are utilized to transmit signals to the alarming device; the transfusion alarm is high in alarming accuracy, and is not influenced by the factors such as medicine liquid containers and the liquid level detection device; and electrolytic reaction cannot be generated on the medicine liquid. With the adoption of the transfusion alarm, the liquid level detection device is separated from the alarming device; and the liquid level detection device is extremely low in cost and is disposable, so that safety is ensured; and the alarming device can be used repeatedly, and has the characteristics of energy conservation, environment friendliness and the like.

Description

technical field [0001] The invention relates to an auxiliary warning device for medical infusion, in particular to an improved infusion alarm and its application method. Background technique [0002] The automatic alarm device for medical drip infusion has many principles, such as weighing principle, electrode principle, float principle, capacitance principle, vibration principle, photoelectric principle and so on. Among them, the weighing principle has poor precision and complex structure, the electrode principle may react to the liquid medicine, the capacitance principle and the vibration principle have high costs, and the float principle has a complex structure, etc., so far, it has not been used on a large scale in hospitals. In order to make the infusion alarm simple in structure, low in cost, low in power consumption, stable and reliable, not polluting liquid medicine, suitable for various liquid medicines, and really convenient for hospitals and patients to use, it mu...

AI Technical Summary

Problems solved by technology

I first proposed an optical fiber-based infusion alarm in the "An Infusion Alarm and Its Application Method" that I applied for in November 2011, which solved the above problems, but the light-emitting diode and photosensitive diode were packaged in the liquid level sensor. The use cost is not low enough, and there is still room for further reduction; when using it, the nurse needs to insert 2 more actions, one time to insert the puncture needle into the infusion bottle, and one time to insert the liquid level sensor into the alarm, which increases the workload of the nurse , needs to be further improved; due to the weak signal of the photodiode, the sensitivity is not enough, and it needs to be further optimized

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