RU85084U1 - DEVICE FOR ASSESSING THE POTENTIAL HAZARD OF COLLAPSOID COMPLICATIONS DURING PHYSICAL LOADS - Google Patents

Abstract

A device for assessing the potential danger of collapsoid complications during physical exertion, including a series-connected pressure sensor with a cuff for measuring blood pressure, an operational amplifier with two inputs, an analog-to-digital converter, a controller with two outputs, a USB converter and a computer, as well as a digital-to-analog converter, This digital-to-analog converter input connected to another output of the controller, and the output to another input of the operational amplifier.

Description

The utility model relates to medicine, namely to physiology, clinical medicine, and can be used to predict crisis state of health, in production conditions and at home - to control loads during sports training, as well as to assess psycho-emotional overload.

A device for non-invasive detection of medical conditions due to the current control of peripheral arterial tone. The device includes a sensor for applying to a patient’s finger or foot, designed to measure peripheral arterial tone in the finger, as a result of which the physiological status or medical condition of the patient is indicated (see RF patent No. 2220653, IPC АВВ 5/02) .

The disadvantage of this device is the low reliability of the results.

A device for non-invasive express control of the functional state of blood vessels, which contains a sphygmomanometer for measuring blood pressure and creating a permanent occlusion, a frequency meter with a sensor for measuring the frequency of Korotkov tones and an electronic unit for registering an effective module of elasticity of the vascular wall (see patent for the invention of the Russian Federation No. 2171784, IPC А61В 5/025).

The disadvantages include possible subjective errors associated with the possible inaccurate registration of Korotkov tones, as well as the inability to identify subjects for whom there is a potential danger of collapsoid complications during physical exertion.

Known electronic device for measuring blood pressure, capable of saving the measurement results (see patent for the invention of the Russian Federation No. 2345707, IPC AB 5/022). In the electronic device, information is input that precisely defines the measurement condition to determine the measurement condition when measuring blood pressure from a plurality of measurement conditions, such as input of temporary information. On the basis of the information obtained that accurately determines the measurement condition, at least one measurement condition of the patient is determined when measuring blood pressure. The calculated blood pressure value is recorded by linking to a measurement condition defined as such.

The disadvantages of the device include the inability to assess the potential danger of collapsoid complications during physical exertion.

A known device for assessing the potential danger of collapsoid complications, containing electrodes connected to an ECG apparatus, which is connected via a USB port to a computer. A pneumatic cuff for measuring blood pressure, with a pneumatic supercharger through a manometer, is connected to a pressure sensor connected to an amplifier and an analog-to-digital converter (see RF patent No. 2306851, IPC АВВ 5/04).

However, this device does not allow to take into account a number of parameters that affect the reliability of the results of assessing the potential danger of collapsoid complications.

The objective of this solution is to create a device for assessing the potential danger of collapsoid complications during physical exertion.

The technical result consists in increasing the reliability of the assessment by providing the ability to determine the totality of the parameters of the pulse wave shape and heart rate variability, in which there is a potential danger of collapsoid complications during physical exertion.

The problem is solved in that the device for assessing the potential danger of collapse complications during physical exertion includes a series-connected pressure sensor with a cuff for measuring blood pressure, an operational amplifier with two inputs, an analog-to-digital converter, a controller with two outputs, a USB converter and a computer, as well as a digital-to-analog converter, while the digital-to-analog converter is connected by an input to another controller output, and by an output to a different input onnogo amplifier.

The utility model is illustrated by the drawing, which shows a block diagram of the device, where

1 - pressure sensor with a cuff for measuring blood pressure;

2 - operational amplifier;

3 - analog-to-digital Converter (ADC);

4 - controller;

5 - digital-to-analog converter (DAC);

6 - USB converter;

7 - computer.

The device for assessing the potential danger of collapsoid complications during physical exertion consists of a series-connected pressure sensor 1 of the MPX2050DP brand with a cuff for measuring blood pressure connected to one of the inputs of the operational amplifier 2 UM324, analog-to-digital converter 3 AD7896, controller 4 PIC16F876, USB 6 converter FT245B and computer 7. The device also contains a digital-to-analog converter 5 AD8512, which is connected by an input to the output of the controller 4, and by an output to another input of the operational amplifier A 2.

The device operates as follows.

Before using the device, before connecting the device to computer 7, install the USB_245_FTDI1 driver on the computer and run the program to evaluate the parameters of the pulse wave shape and heart rate variability (for example, ElMeter). After the main form of ElMeter appears on the screen, you should connect the output of the USB converter 6 to computer 7. To do this, first press the "Connect USB" button, then, after the list of connected USB devices appears on the screen, select Device 1, and then press the "Open" key " Then the inscription “Sensor connected” will appear on the main form. Next, put the cuff on the subject’s forearm, and with the help of a pear, pump up the pressure in the cuff, using the arrow gauge, to a pressure approximately equal to the middle of the normal blood pressure range of a person (about 90 mmHg) so that the pressure remains constant. Then, in the program, press the "Measurement" key. A pulse wave striking the side of a pneumatic cuff causes oscillations that are captured by a pressure sensor, such as a strain gauge. The operational amplifier 2 amplifies the analog electric signal corresponding to the pressure in the cuff and feeds it to the input of the ADC-converter 3. Then the digital signal is sent to the controller 4, where the algorithm subtracts that part which does not change from the complex signal. Then, from one output of the controller 4, the signal is fed to the input of the DAC 5 and again to the operational amplifier 2, where a constant bias voltage corresponding to a constant pressure value is generated, and fed to a pressure sensor with a cuff for measuring blood pressure 1. The device of sensor 1 allows you to compensate for the constant pressure and thereby select only the alternating signal at the output. From the second output of the controller 4 through the USB port chip, the data is prepared for transmission to computer 7 and is an array of data containing only a variable corresponding to a pulse wave. During measurement, in the box next to the inscription instant values of the measured pressure will be displayed. After about 10 seconds, the measurement will end, and the graph with the analysis results will be displayed on the graph. The program analyzes the magnitude and repetition rate of pulse wave anomalies, and concludes that there is a pathology. Thus, the program analyzes: the presence of the vagotonic type of nervous regulation of the test cardiovascular system, the pulse wave shape parameters (the presence of high-frequency oscillations, the degree of sharpness of the main burst, the amplitude of the additional burst correlated to the main one). Additionally, blood pressure and pulse rate are determined, the program automatically, upon completion of registration of several cardiocycles, forms a conclusion about the possibility or undesirability of physical activity.

The originality of the proposed solution lies in the use of new elements and circuit solutions for amplifying the signal of the pulse wave of blood flow.

Claims (1)

A device for assessing the potential danger of collapsoid complications during physical exertion, including a series-connected pressure sensor with a cuff for measuring blood pressure, an operational amplifier with two inputs, an analog-to-digital converter, a controller with two outputs, a USB converter and a computer, as well as a digital-to-analog converter, In this case, the digital-to-analog converter is connected by an input to another controller output, and by an output - to another input of an operational amplifier.