RU2446738C1 - Device for measuring arterial pressure and pulse rate without cuff - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: device relates to medical equipment and is intended for measuring arterial pressure and pulse rate without cuff. Device contains case in form of automatic pen, pressure sensor, electronic unit, display, doser of gradual pressure on pressure sensor. To fix device on human body in process of measurement, on case placed are two supports, between which measuring probe, connected with pressure sensor, which in its turn is connected with gradual pressure doser and electronic unit, can travel. Electronic unit is made with possibility to process data and transmit them on display.

EFFECT: application of device will make it possible to increase accuracy of arterial pressure and pulse rate measurement due to stability achieved due to device supports, automatic dosing of pressure on measuring probe.

1 dwg

Description

The invention relates to medical equipment and is intended to measure blood pressure and heart rate.

Well-known devices for measuring blood pressure and heart rate, which consist of a pressure sensor, cuff, pressure indicator and heart rate, including electronic.

A device is known according to copyright certificate No. 1438702 of 09/19/1986 "Device for measuring pressure", which is intended for cuffless pressure measurement. The device contains an elastic indicator connected to the housing, which are filled with a compression medium, a manometer for measuring the compression medium, a pump for increasing the pressure of the compression medium. New in the claimed device is that it allows you to measure blood pressure without a cuff.

The disadvantages of this device are:

- structural complexity of the device;

- low measurement accuracy;

- the difficulty of reading the measurement results;

- the jitter of the device affects the measurement results;

- Does not measure heart rate;

- relatively large dimensions and inconvenient for continuous wear.

A device is known according to the copyright certificate No. 1725826 dated 04.16.1990 of the year “Device for measuring pressure”, comprising an elastic thin-walled cylinder connected to the hollow body, a manometer for measuring the pressure of the compression medium, a pump for increasing the compression medium, a measuring probe with a supporting heel. New in the claimed device is that it allows you to more accurately measure blood pressure without a cuff.

The disadvantages of the device:

- structural complexity of the device;

- the difficulty of reading the measurement results;

- the jitter of the device affects the measurement results;

- Does not measure heart rate;

- relatively large dimensions and inconvenient for continuous wear.

As a prototype, the device was considered on the application for the invention of the Russian Federation "Attachment to a cell phone for measuring blood pressure and heart rate" No. 2008144941 from 11/13/2008 with a positive decision to grant a patent for the invention. This device includes a case in the form of a pen, a pressure sensor, a measuring probe with a supporting heel, a compensator, an electronic matching unit with a cell phone and a connecting cable to it.

The disadvantage of this device is that when measuring blood pressure and heart rate, the hand with the device is on weight, which requires a certain skill from the person measuring blood pressure to obtain a reliable result. In this case, the pressure measuring device itself must slowly dose the pressure on the measuring probe during the measurement process.

The objective of the proposed technical solution is to create a device devoid of the disadvantages of the prototype, namely: when using it, the hand measuring the pressure should be stably supported, and the dosed pressure on the measuring probe should be carried out automatically.

The problem is solved using the present invention, which consists of a housing made in the shape of a fountain pen, at one end of which a spring clip and a display are mounted on a ball bearing, on the other hand, the housing ends with two supports, between which the probe can move with the vertical position of the housing, connected to a pressure sensor, which in turn is connected to a gradual pressure meter and an electronic data processing unit (receiving, accumulating, storing, comparing, fixing and from measuring time intervals and converting the measurement results into a digital value) and transmitting it to the display.

The claimed device differs from the prototype in new features:

- the presence of a gradual pressure dispenser;

- the presence of two supports;

- the display is attached to the case.

From the above list of features of the claimed device and the achievement of the task it is clearly seen that the claimed technical solution is a new set of features, as a combination of known and new features, providing a new technical result, not known at the filing date of the application.

A new technical result that can be obtained by carrying out the invention is to enable, when measuring blood pressure and pulse rate, a structurally simple device to stably rest reliably with the hand of a person measuring blood pressure, and to dose the pressure to the probe automatically.

The proposed device is industrially applicable, because can be used to measure blood pressure and heart rate by any person or medical staff.

The technical solution of the claimed device meets the criterion of "novelty", since it is not known from the prior art at the date of application. Not known from the prior art, the set of essential features of the claimed technical solution and their impact on obtaining the desired technical result.

The technical solution of the claimed device meets the criterion of "inventive step", since no solutions having features have been identified

The device shown in the drawing schematically (in section).

The device consists of a housing 1, made in the shape of a fountain pen, at one end of which a spring clip 2 and a display 3 are mounted on a ball bearing 4, on the other hand, the housing ends with two supports 5, between which the probe 6, connected to a pressure sensor 7 (for example, in the form of a strain gauge) connected to a gradual pressure meter 8 and an electronic data processing unit 9 (receiving, accumulating, storing, comparing, fixing and measuring time intervals and converting anija a digital value measuring results) and transmitting them to the display. The electronic data processing unit 9 can be assembled, for example, on a microcontroller into which a program is entered to solve functions corresponding to the description of the use of the device. The gradual pressure dispenser 8 can be any known from the state of the art, for example, as shown in the drawing, in which the metering gradual pressure on the pressure sensor 7 is due to the metered movement of bulk material.

The device is simple in design, does not require expensive materials for the manufacture, can easily be reproduced and propagated industrially, does not require complex technological production.

An example of using the device.

If necessary, measure blood pressure and heart rate, the paramedic or any person who has studied the user manual picks up the device by the housing 1 and turns it vertically upwards with supports 5. This position of the housing 1 leads to the inclusion of the electronic data processing unit 9 and to the initial operating position of the dispenser 8 gradual pressure. An icon appears on the display indicating that the device is ready for measurement. Then the device is again turned over and its supports 5 are pressed against the human body on the artery passage area so that the artery is at the same distance between the supports. In this case, the hand of a person measuring pressure, stably rests on the housing 1, which should be in a vertical position perpendicular to the surface of the body. With this position of the device, the measuring probe 6, connected to the pressure sensor 7, under its own gravity extends from the housing 1 and touches the artery with its end. At the same time, the gradual pressure dispenser 8 begins to gradually press on the pressure sensor 7. When the first pulse wave, the measuring probe 6 will produce a bottom one-time short-term pressure on the pressure sensor 7.

This signal will be fed to the input of the electronic data processing unit 9 and will include an electronic circuit for measuring pressure values to the pressure sensor 7 produced by that time by the gradual pressure dispenser 8. At the same time, it will include an electronic circuit for fixing and measuring time intervals of the electronic data processing unit 9. After that, the electronic data processing unit 9 stores the measurement results, compares, converts it to a digital value and displays the value of the diastolic blood pressure and continues to receive information from the pressure sensor 7 on the pressure force on it by the gradual pressure dispenser 8. As soon as after a certain period of time the signal from the pulse wave does not arrive at the pressure sensor 7 through the measuring probe 6, the electronic data processing unit 9 at the same moment will record and remember the value of the pressure force on the pressure sensor 7 carried out on it by the gradual pressure dispenser 8. The data processing unit 9 stores data about this pressure, compares them, measures the time intervals between pulse waves and converts these data into a digital value, which displays in the form of values of systolic blood pressure and heart rate. If necessary, turn the display, for the convenience of observing the measurement results, take it by hand and rotate it in the ball joint 4 to the desired position. To turn off the device, it is turned with its supports 5 up to a vertical position. This position of the housing 1 leads to the shutdown of the electronic data processing unit 9. After that, the device is again turned over and with the help of a spring clip 2 is fixed on clothes.

It can be seen from these examples that when using the device, the claimed technical result is achieved: a device simple in design for measuring blood pressure and heart rate without a cuff is created, when measuring which the hand of a person measuring pressure is firmly supported, and metered pressure is automatically applied to the measuring probe.

Claims (1)

A device for measuring blood pressure and heart rate without a cuff, comprising a pen-shaped housing, a measuring probe, a pressure sensor, an electronic unit, a display, characterized in that it comprises a gradual pressure metering device for a pressure sensor that is connected to the measuring probe and the electronic unit, two supports located on the housing for fixing the device on the human body during the measurement process, while the electronic unit is configured to process data and transmit them to displays, and the measuring probe is made En with the ability to move between two supports.

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