Medical non-contact and non-perception urine volume automatic monitoring device and method

Abstract

The invention discloses a medical non-contact and non-perception urine volume automatic monitoring device and a medical non-contact and non-perception urine volume automatic monitoring method. A capacitance sensing circuit is matched with a microprocessor to automatically measure the urine volume. Compared with a traditional urine volume measuring scheme, the urine volume measuring device has the advantages of being simple in structure, convenient to measure, high in precision and capable of obtaining accurate urine volume data and automatically storing the data in time without manual intervention. The selected microprocessor has the main characteristics of low power consumption and strong computing power. In addition, due to the fact that the scheme needs to carry out precise measurement on rapidly-changed physical quantities, the microprocessor needs to be high in processing speed. In addition, the device is further provided with a three-axis acceleration sensor, and the operation state of the circuit is switched by sensing the action applied to the device by a user. In addition, a mobile phone APP is additionally arranged, data reading and statistics and urine volume analysis can be achieved at a mobile phone end, interaction between a doctor and a patient is achieved, and the doctor gives treatment suggestions.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an automatic urine output monitoring device and method. Background technique [0002] As of 2021, there are more than 3 million uremia patients and more than 120 million chronic kidney disease patients in my country. Urine volume is one of the key indicators reflecting renal perfusion and renal function, and it is also an important physiological indicator for early identification of acute renal injury. For such a large number of patients, we urgently need an effective disease monitoring method and system. The accurate measurement of urine output is not only useful for grasping the patient's condition, adjusting the treatment plan, and judging the development and prognosis of the disease. [0003] Capacitance is a physical quantity used to describe the electric field between conductors. Capacitance sensors can be directly used to measure or sense changes in various types of substanc...

AI Technical Summary

Problems solved by technology

There are problems with this method: (1) When the patient’s urine flow reaches a certain level, the urine volume flowing into the measuring device will be greater than the urine volume flowing out of the device, resulting in a backlog of urine, which cannot achieve the real-time monitoring effect, and even seriously affects the patient. normal urination

(2) The composition of urine will change with drug administration and changes in renal function, resulting in changes in the viscosity of urine, which in turn will lead to changes in the average volume of urine droplets, and measurement errors will accumulate over time

There are problems with this method: (1) Keep the urine container absolutely vertical during the measurement process, but it is difficult to do this in actual use

(2) Weighing is easily affected by the position of the urinary catheter

Because the urinary catheter will swing and affect the measurement effect, the catheter clamp is usually used to fix the urinary catheter in actual use, but this will cause limited mobility of bedridden patients, such as the inability to turn the body freely

When the container is full, it needs to be emptied, and this process will cause the position of the pipeline to change, causing measurement errors

(3) Like the drop count measurement method, the urine density will also change with drug administration and changes in renal function, resulting in errors in urine volume measurement

There are problems with this method: (1) Due to the location interval of the sensor, the measured urine volume is also discrete, and it is impossible to measure continuous urine volume changes

(2) The measurement accuracy depends on the number of sensors. To improve the measurement accuracy, more sensors must be added

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