RU171819U1 - CONSTRUCTION FOR CARDIOMONITORING WITH ELECTRODES FROM A CONDUCTIVE TISSUE - Google Patents

Abstract

 (57) The utility model relates to the field of medical equipment intended for monitoring the state of the human cardiovascular system, and can be used in the diagnosis of the human cardiovascular system. Achievable technical result consists in eliminating the possibility of corrosion of the electrodes, ensuring uniformity of the structure of the electrodes, in eliminating the possibility of artefacts when taking an ECG signal due to a violation of the reliability of the skin-electrode transition. The specified technical result is achieved by the fact that in the design for cardiomonitoring, containing a corset in the form of elastic and waist bands, lead wires of the cardiomonitor and electrodes, the elastic bands of the corset, taking into account the size range, are sewn into the electrodes of the conductive fabric. Conducting fabric electrodes are sewn into the elastic corset tapes of the claimed utility model corresponding to the locations of the electrodes on the human body. The elastic and waist belts of the corset are supplemented with textile fasteners, and the textile fasteners themselves are made with the possibility, together with elastic and waist belts of the corset, to provide adjustment of the degree of tension of the corset to tightly fit the human body, regardless of its size and uniform pressing of the electrodes from the conductive tissue to his body. Buttons are installed on the conductive fabric of the electrodes, with the help of which electrical contact is made with the leads of the cardiomonitor leads. To hold the leads of the cardiomonitor leads and to exclude their effect as a result of free movements on the reliability of the skin-electrode contact, the belt loops are sewn into the elastic bands of the corset, into which the leads of the cardiomonitor are laid and fixed. In the waistband of the design there is a pocket for storing the ECG removal unit during the study. The electrodes in the claimed utility model are made of conductive fabric, eliminating the possibility of corrosion and having a uniform structure, while the electrodes of conductive fabric meet the following requirements:

specific surface resistance ρ _s not more than 1 Ohm per unit area of a piece of conductive fabric of a square shape;

 electrode size not more than 60 × 60 mm;

 reliable contact of electrodes with metal (steel, copper) is ensured;

 the electrodes are resistant to solutions containing NaCl and high molecular weight alcohols.

The overall dimensions of the claimed utility model depend on the anthropometric data and the anatomical features of the subject and can be selected individually for a particular person. In the manufacture of a useful design model for cardiomonitoring with electrodes of conductive tissue of various sizes, the attachment points of the electrodes remain unchanged.

Description

The utility model relates to the field of medical equipment intended for monitoring the state of the human cardiovascular system, and can be used in the diagnosis of the human cardiovascular system.

Known cardiomonitor for monitoring the frequency of cardiovascular function of people during exercise, including work under water (RF Patent No. 2455928, published July 20, 2012, Bull. No. 20, authors: Baranov A.V., Baranov BC, Komarov BC, Tsibulsky A.L.). The device comprises a housing in the form of a hydro- and pressure-resistant belt with electronic components, which are a device for recording, processing and transmitting data via a radio channel (in the form of a high-frequency electrocardiogram pulse transmitter mounted in a hydro- and pressure-resistant belt) and receiving electrodes, as well as a case of wrist electronic hydro- and bar-resistant watches with built-in electronic components in the form of a receiver with a display for monitoring heart rate (HR). An additional receiver with a microcontroller, a USB port, a memory unit, a pinger and an LED is also included in the device’s case in the form of a hydro- and pressure-resistant belt with electronic components.

The device provides the ability to simultaneously monitor heart rate by the test subject and an external observer in real time, as well as through a retrospective assessment and analysis of the state of the human body during the load and in different modes.

The essential features common with the proposed utility model are: the presence of a structure made of flexible material, in the form of a hydro- and bar-resistant belt with electrodes embedded in it, worn on the body of the test person, the presence of electrodes for monitoring the parameters of the human heart, a similar functional purpose with the claimed useful model (monitoring the state of the human cardiovascular system).

This device has the following disadvantages:

- the device has limited functionality (for example, the parameter obtained when taking an electrocardiogram (ECG) is only one - heart rate, which does not allow for an extended diagnosis of the state of the cardiovascular system);

- the device does not provide measures to combat corrosion when using electrodes with metal contacts with human skin;

- the device does not provide measures to counter the occurrence of artifacts when taking cardiac signals due to a violation of the reliability of the skin-electrode transitions;

- not provided for the possibility of changing the configuration of the connection of the electrodes;

- the possibility of universal (in medical research, in sports medicine, in everyday life) application of the device is not provided.

Known electrode belt Tapuz with built-in ECG electrodes (http://atesmedica.ru/site05/en_elektrodnyy_poyas_tapuz.php; http://atesmedica.ru./tapuz-instruktsiya.php), consisting of chest electrodes, two leads on the hands, an electrode on the left leg, an earth electrode embedded in the belt, a patient cable, providing connection to any cardiographs.

The device provides a quick application of electrodes, the anatomically correct position of the chest electrodes provides an ECG record that is almost identical to the recording from standard electrodes. The elastic latex design allows the use of the Tapuz electrode belt with integrated ECG electrodes in patients of various physiques.

The essential features common with the proposed utility model are: the presence of a structure of elastic material worn on the body of the test person, the presence of electrodes for monitoring the parameters of the human heart, a similar functional purpose with the claimed utility model (tracking the state of the human cardiovascular system).

The device has the following disadvantages:

- the electrodes of the device, due to the presence of metal contacts, are susceptible to corrosion, which can cause irritation on the user's body, as well as a decrease in the reliability of contacts with human skin;

- before use, all electrodes of the device should be moistened with a special spray, gel or water;

- the possibility of universal (in medical research, in sports medicine, in everyday life) application of the device is not provided;

- ECG examination is recommended in an environment without strong electromagnetic noise;

- a reliable study is possible only if the patient is still (during the examination, the patient should lie comfortably on a flat surface, and during the study, sitting or standing, the quality of the ECG may deteriorate)

The closest in design to the proposed utility model is an electrode device for a wearable ECG monitor (patent RU 2444988, IPC А61В, publication March 20, 2012, authors: Bonch-Bruevich V.V., Filatov A.L.) containing a system of cutaneous electrodes and electronic components (in the form of a monitoring unit). The system of cutaneous electrodes and the monitoring unit are electrically interconnected and placed on the suspension, mounted on the human body. The system of cutaneous electrodes consists of two arrays of pin electrodes, the end free parts of which have a convex spherical surface and are mounted on the waist part of the suspension, fitting the body with the possibility of providing “dry” galvanic contact with the areas of the anterior surface of the chest under natural patient movements. Each matrix consists of two groups, the pin electrodes in each of which are galvanically connected to each other. One of the groups - a larger area - is designed to take an electrocardiographic signal (ECG signal), and the other - a smaller area - to connect to means for suppressing common mode interference. The end fastening parts of the electrode pins are mounted on a flexible dielectric substrate associated with a suspension made of elastic textile material.

The invention improves the reliability of galvanic contact between the patient’s body and the system of “dry” electrodes and improves the signal-to-noise ratio of the ECG signal during prolonged use.

The essential features common to the proposed utility model are:

- a pendant made of elastic textile material, fixed on the human body (in the claimed utility model - a corset in the form of elastic and waist bands);

- flexible conductors (in the claimed utility model - leads of the cardiomonitor leads);

- the waist part of the suspension (in the claimed utility model - waist belt of the corset);

- cutaneous electrodes (in the claimed utility model - electrodes of conductive tissue);

- a similar functional purpose with the claimed utility model (tracking the state of the human cardiovascular system).

The device has the following disadvantages:

- the electrodes of the device, due to the presence of metal contacts, are susceptible to corrosion, which can cause irritation on the user's body, as well as a decrease in the reliability of contacts with human skin;

- the device’s electrodes have a heterogeneous structure (an array of metal cylinders), which negatively affects the establishment of a stable skin-electrode transition;

- artifacts may occur when taking an ECG signal due to a violation of the reliability of the skin-electrode transition;

- the design of the device does not provide a place to store the ECG removal unit during the study.

The technical result implemented by the claimed utility model is the elimination of the above disadvantages, namely: improving the reliability of the contacts of the electrodes with human skin, improving the quality of the structure of the electrodes, eliminating the possibility of artefacts when taking an ECG signal due to violations of the reliability of the skin-electrode transition.

The technical result is achieved by the fact that in the design for cardiomonitoring with electrodes made of conductive fabric containing a corset in the form of elastic and waist bands, lead wires of the cardiomonitor and electrodes, elastic bands of the corset are sewn into the elastic bands of the corset, taking into account the size range. Conducting fabric electrodes are sewn into the elastic corset tapes of the claimed utility model corresponding to the locations of the electrodes on the human body. The elastic and waist belts of the corset are supplemented with textile fasteners, and the textile fasteners themselves are made with the possibility, together with elastic and waist belts of the corset, to provide adjustment of the degree of tension of the corset to tightly fit the human body, regardless of its size and uniform pressing of the electrodes from the conductive tissue to his body. Buttons are installed on the conductive fabric of the electrodes, with the help of which electrical contact is made with the leads of the cardiomonitor leads. To hold the leads of the cardiomonitor leads and to exclude their effect as a result of free movements on the reliability of the skin-electrode contact, the belt loops are sewn into the elastic bands of the corset, into which the leads of the cardiomonitor are laid and fixed. In the waist belt of the corset is a pocket for storing the ECG removal unit during the study. The electrodes in the claimed utility model are made of conductive fabric, eliminating the possibility of corrosion and having a uniform structure, while the electrodes of the conductive fabric meet the following requirements [Sinyutin SA, Leonova A.V. Electrodes integrated into clothing for ECG recording Electronic resource // Engineering Journal of the Don, 2013, 81№4. - Access mode: http://www.ivdon.ru/magazine/archive/n4y2013/2029 (free access) - Zagl. from the screen. - Yaz. Russian]:

- specific surface resistance ρ _s not more than 1 Ohm per unit area of a piece of conductive tissue square shape;

- the size of the electrode is not more than 60 × 60 mm;

- provides reliable contact of the electrodes with the metal (steel, copper);

- ensures the stability of the electrodes to solutions containing NaCl and high molecular weight alcohols.

The overall dimensions of the claimed utility model depend on the anthropometric data and the anatomical features of the subject and can be selected individually for a particular person. In the manufacture of a useful design model for cardiac monitoring with electrodes of conductive tissue of various sizes, the attachment points of the electrodes of conductive tissue remain unchanged.

To achieve a technical result, the system of cutaneous electrodes in the claimed utility model is a design in the form of a corset of elastic and waist bands with textile fasteners, reminiscent of an orthopedic brace, but without stiffeners. Textile fasteners are made with the possibility, together with elastic and waist bands, to provide adjustment of the degree of tension of the corset for a tight fit

the human body, regardless of its size and uniform pressing electrodes from conductive tissue to his body.

In elastic bands of this design, taking into account the size range, electrodes from conductive fabric are sewn. The use of electrodes made of conductive fabric eliminates the possibility of corrosion of the electrodes and ensures the uniformity of their structure. Due to the straps in the form of elastic bands of a corset, a waist belt of a corset and a system of textile fasteners that provide adjustment of the degree of tension of the corset, a pressing effect is achieved, which is used to attach ECG electrodes to the human body and eliminates the possibility of artifacts when taking an ECG signal due to violations reliability of the skin-electrode transition, which increases the accuracy of ECG measurements. In the waist belt of the design of the claimed utility model there is a pocket for storing the ECG removal unit during the study.

A comparative analysis of the claimed device and prototype allows to identify the following differences:

- electrodes in the claimed utility model are made of conductive fabric, eliminating the possibility of corrosion and having a uniform structure;

- elastic and waist corset tapes are supplemented with textile fasteners, made with the possibility, together with elastic and waist corset tapes, to provide adjustment of the degree of tension of the corset to uniformly press the electrodes from the conductive tissue to the human body and to exclude the possibility of artifacts when taking the ECG signal due to violations of the skin-electrode transition reliability;

- to hold the lead wires of the cardiomonitor, belt loops are sewn into which they fit and fasten;

- in the waist belt design of the claimed utility model provides a pocket for storing the ECG removal unit during the study.

The claimed utility model is illustrated in FIG. 1, 2. In FIG. 1 shows a design diagram for cardiomonitoring with electrodes of conductive tissue on the human body. In FIG. 2 shows an image of a corset, a view from the back.

In FIG. 1 the following notation is used:

1 - elastic bands;

2 - textile fasteners;

3 - electrodes of conductive fabric;

4 - guiding loops;

5 - pocket for storing the ECG removal unit during the study;

6 - waist belt.

The back side corset can be made in two versions, as shown in FIG. 2 (a, b), where 1 - elastic bands, 6 - waist belt.

Consider the essence of the proposed utility model. The system of cutaneous electrodes in the claimed utility model is a design in the form of a corset of elastic and waist bands with textile fasteners (for example, Velcro), resembling an orthopedic bandage, but without stiffeners. Textile fasteners are made with the possibility, together with elastic and waist bands of the corset, to provide adjustment of the degree of tension of the corset. Depending on the size range, corset elastic tapes are sewn with electrodes from conductive fabric (for example, fabric made of carbon threads or polyaramide threads with a metallized coating). Conducting fabric electrodes are sewn into the elastic corset tapes of the claimed utility model corresponding to the locations of the electrodes on the human body. On the conductive tissue of the electrodes for removing ECG signals, buttons are installed with which electrical contact is made with the leads of the cardiomonitor leads. The waist belt of the corset of the claimed utility model provides a pocket for storing the ECG removal unit during the study. To hold the leads of the cardiomonitor leads and to exclude their effect as a result of free movements on the reliability of the skin-electrode contact, the belt loops are sewn into the elastic bands of the corset, into which the leads of the cardiomonitor are laid and fixed. Conductive fabric electrodes meet the following requirements:

- specific surface resistance ρ _s not more than 1 Ohm per unit area of a piece of conductive tissue square shape;

- the size of the electrode is not more than 60 × 60 mm;

- provides reliable contact of the electrodes with the metal (steel, copper);

- ensures the stability of the electrodes to solutions containing NaCl and high molecular weight alcohols.

The overall dimensions of the claimed utility model depend on the anthropometric data and the anatomical features of the subject and can be selected individually for a particular person. In the manufacture of the design of the utility model of various sizes, the attachment points of conductive tissue electrodes on the human body remain unchanged. The claimed utility model allows to exclude ECG artifacts caused by improper application of electrodes, their displacements, disturbances and heterogeneity of the electrical resistance of the skin-electrode contacts and the movements of the patient.

To verify the achievement of the technical result of the claimed utility model, practical studies of the design for cardiomonitoring with electrodes from conductive tissue were carried out. The studies fully confirmed the achievement of the claimed technical result.

The industrial applicability of the utility model is determined by the fact that the proposed design can be made using well-known technology from known materials and components and used to monitor the condition of the human cardiovascular system.

Claims (5)

A design for cardiomonitoring with electrodes made of conductive fabric, containing a corset in the form of elastic and waist bands, lead wires of a cardiomonitor and electrodes, characterized in that the elastic bands of the corset, taking into account the size range, are sewn into electrodes from conductive fabric, electrodes from conductive fabric are sewn into places of elastic bands of the corset corresponding to the locations of the electrodes on the human body, elastic and waist bands of the corset are supplemented with textile fasteners, textile fasteners are made with the possibility of In addition to elastic and waist bands of the corset, to ensure the adjustment of the degree of tension of the corset to tightly fit the human body, regardless of its size and uniformly pressing the electrodes from the conductive tissue to his body, buttons are installed on the conductive tissue of the electrodes by means of which electrical contact is made with the leads of the cardiomonitor , to hold the leads of the cardiomonitor leads and to exclude their influence as a result of free movements on the reliability of the skin-electrode contact in elastic The corset tapes are sewn together with belt loops into which the leads of the cardiomonitor are laid and fixed, a pocket for storing the ECG removal unit is located in the waistband of the corset during the examination, the electrodes are made of conductive fabric, eliminating the possibility of corrosion and having a uniform structure, while the electrodes are conductive fabric meet the following requirements: surface resistivity ρ _s is not more than 1 ohm per unit area of the square shaped conductive piece of fabric;  electrode size not more than 60 × 60 mm;  reliable contact of electrodes with metal (steel, copper) is ensured;  the electrodes are resistant to solutions containing NaCl and high molecular weight alcohols.

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