Medical venous transfusion monitor

Abstract

The invention discloses a medical venous transfusion monitor. The medical venous transfusion monitor comprises a detecting circuit and a control circuit, wherein the detecting circuit consists of infrared pair transistors and a voltage comparator. The medical venous transfusion monitor is characterized in that two or more than two groups of infrared pair transistors are arranged, wherein each group of infrared pair transistors is arranged on the same height position of a drip cup; the threshold value voltage is one half the sum of output voltage when the infrared pair transistors mounted on the drip cup are shielded by medical drops and output voltage when the infrared pair transistors mounted on the drip cup are unshielded by the medical drops. A monitoring method comprises the following steps: a), connecting equipment; b), selecting liquid types; c), setting a dripping speed alarm range; d), setting reference dripping speed; e), obtaining existing dripping speed; f) performing dripping speed ultra-limit judgment; g), judging drug flow-empty. According to the monitor and the monitoring method disclosed by the invention, false detection and leakage detection of a conventional transfusion alarm are avoided, whether the current dripping speed and the liquid medicine are emptied or not can be judged, the beneficial effects are remarkable, and the application and the popularization are convenient.

Description

technical field [0001] The present invention relates to a medical intravenous infusion monitor, more specifically, to a medical intravenous infusion monitor which realizes drug drip speed detection through multiple sets of infrared paired tubes and can alarm when the drug liquid is empty and the drip speed exceeds the range. . Background technique [0002] Intravenous infusion is an operation item widely used in modern medical activities. Usually, when the patient is infused, the patient or the accompanying person is required to assist the nursing staff to continuously observe the progress of the infusion. Because the infusion time is often long, it is inevitable for the patient or the accompanying staff to be negligent, and cannot find in time that the liquid in the infusion bottle has been emptied, causing the patient's venous blood to return, causing unnecessary loss and pain, and even threatening the patient's life. Different types or concentrations of intravenous infu...

AI Technical Summary

Problems solved by technology

[0003] At present, commonly used infusion monitors are based on infrared tube voltage monitoring technology, such as the utility model patent document with the patent publication number CN201572367 and the invention name "Infrared Infusion Alarm", and the patent publication number CN202777298 and the invention name is The utility model patent documents of "an infusion alarm" all disclose an infusion alarm that uses the infrared tube voltage monitoring technology. Whether the flow is finished, neither the infusion drip speed nor the change of the infusion drip speed can be detected

Moreover, due to the different penetration properties of infrared rays to different infusion tubes (such as brown or transparent) and different intravenous infusions (colorless and clear, colored and clear, translucent, opaque), that is to say, the normal infusion process The reference sampling voltage is different, and the sampling voltage when the liquid is empty and the tube is empty is also different. Therefore, triggering the alarm by sampling the voltage in different situations often results in false alarms or missing alarms.

[0004] Another example is the invention patent document with the patent number CN201410009845.7 and the invention name "A Medical Intravenous Transfusion Alarm", which discloses an infusion alarm, which uses infrared pairing tubes arranged on both sides of the infusion tube to realize whether the liquid is The detection of the empty flow, but not the drop speed of the medicine, and the infrared tube is set on the infusion tube, there is a large detection error

[0005] The infusion pump can control the infusion device to drip at a certain drip rate. The principle is usually to control the drip rate by controlling the motor. No. CN1759891, the patent document titled “A Medical Infusion Pump” discloses an infusion pump that controls the drip rate. This equipment is usually large in size, complicated in operation, expensive in cost, and requires special training. It will be promoted in special infusion places such as intensive care units, or only when there are special drug infusions in general wards. Therefore, under the current conditions, it is difficult to be widely used in general wards

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