Portable human body multi-parameter monitor

Abstract

The invention discloses a portable human body multi-parameter monitor. The monitor consists of a photoelectric sensor, a frequency selecting and signal conditioning amplifying circuit, a demodulating circuit, a low-pass filtering and amplifying circuit, a high-pass filtering and amplifying circuit, a micro control unit (MCU) analyzing and calculating unit, a display, a digital temperature sensor, a general packet radio service (GPRS) system and a global positioning system (GPS), wherein the photoelectric sensor consists of a light-emitting diode, a lens and a photocell; the light-emitting diode is electrically connected with the MCU analyzing and calculating unit; the lens is arranged between the light-emitting diode and the photocell; the photocell is in signal connection with the frequency selecting and signal conditioning amplifying circuit; the frequency selecting and signal conditioning amplifying circuit is electrically connected with the demodulating circuit; the demodulating circuit is electrically connected with the low-pass filtering and amplifying circuit; the low-pass filtering and amplifying circuit is electrically connected with the MCU analyzing and calculating unit and the high-pass filtering and amplifying circuit respectively; the high-pass filtering and amplifying circuit is electrically connected with the MCU analyzing and calculating unit; and the display, the digital temperature sensor, the GPRS system and the GPS are in signal connection with the MCU analyzing and calculating unit.

Description

technical field [0001] The invention relates to a medical instrument, in particular to a portable human body multi-parameter monitor. Background technique [0002] The multi-parameter monitor is one of the routine equipment in the hospital, and it is an indispensable and important equipment in the hospital. Through the 24-hour monitoring and analysis of various physiological parameters, when the patient's physiological function parameters exceed a certain value, an alarm will be issued to remind the doctors and nurses It is a monitoring system for personnel or patient family members to rescue, and it is an important reference index for medical staff to diagnose, treat and rescue. Widely used in ICU, CCU, wards and operating rooms. The monitor is different from the monitoring and diagnostic instrument. It must continuously monitor the patient's physiological parameters for 24 hours, detect the change trend, point out the critical situation, and provide the basis for the doct...

AI Technical Summary

Problems solved by technology

In addition to the relatively simple temperature measurement, the measurement of other basic parameters is more complicated. For example, the electrocardiogram adopts bioelectric technology, and the signal is directly extracted from the human limbs through electrodes, and then filtered and amplified to monitor the working condition of the heart. Heart rate; the oscillometric method is often used to measure blood pressure, which uses the gas in the cuff to pressurize, and obtains the systolic pressure, diastolic pressure and mean pressure of arterial blood through the principle of pressure balance. No matter which method of automatic blood pressure measurement must have a set of pressurization The air pump, deflation valve, cuff and corresponding air circuit are not suitable for continuous monitoring because the arterial blood vessels will be blocked during measurement; the blood oxygen saturation is based on Beer's law, and the pulsating components in the finger are detected by red and infrared light and The blood oxygen saturation is obtained by calculating the DC component. Due to the great interference from the external light, it must be specially processed in the circuit design.

It can be seen that due to the difference in sensors and methods, it is difficult to reduce the volume when these basic parameters are monitored at the same time

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