Wireless lead snap fastener based on electrocardiograph monitor

Abstract

The wireless lead snap-fastener comprises a snap-fastener body, an electrode slice slot and an antenna interface, the electrode slice slot and the antenna interface are arranged on the snap-fastener body, a first mounting cavity, a second mounting cavity and a third mounting cavity are reserved in the snap-fastener body, an energy storage battery is arranged in the first mounting cavity, and the third mounting cavity is arranged in the second mounting cavity. A signal conditioning circuit, a signal transmitting circuit and an energy receiving circuit are integrated in the second mounting cavity, and an energy receiving coil is arranged in the third mounting cavity. The utility model aims to provide the wireless lead snap fastener based on the electrocardiograph monitor, which has two functions of wireless signal transmission and wireless electric energy transmission, abandons the traditional mode of lead wire lead, and overcomes many defects of lead wire use.

Description

Technical Field

[0001] The utility model relates to wireless signal and energy transmission technology, in particular to a wireless lead snap button based on an electrocardiogram monitor. Background Art

[0002] Monitors generally monitor ECG, respiration, blood pressure, blood oxygen saturation, pulse rate, body temperature, end-tidal carbon dioxide, respiratory mechanics, anesthetic gas, cardiac output, bispectral index, etc., and are one of the indispensable medical devices in hospitals and homes.

[0003] Generation of ECG signals in the human body: The tissues and body fluids around the heart can conduct electricity, so the human body can be regarded as a volume conductor with three dimensions: length, width, and thickness. The heart is like a power source, and the sum of the changes in the action potentials of countless myocardial cells can be transmitted and reflected on the body surface. There is a potential difference between many points on the body surface, and there are also many points with no potential difference and are equal in electrical potential. In each cardiac cycle, the heart is excited successively by the pacemaker, atrium, and ventricle, accompanied by changes in bioelectricity, which are called ECG.

[0004] Characteristics of human ECG signals: ECG signals are biomedical signals with the following characteristics:

[0005] 1. The signal has the characteristics of near-field detection. If it is very close to the human body, the signal can basically not be detected.

[0006] 2. ECG signals are usually weak, at most in the mV range;

[0007] 3. It is a low-frequency signal, and the energy is mainly below a few hundred Hz;

[0008] 4. The interference is particularly strong. The interference comes from both inside the organism, such as electromyographic interference, breathing interference, etc.; and outside the organism, such as power frequency interference, other external crosstalk introduced by poor grounding when picking up signals, etc.;

[0009] 5. The interference signal overlaps with the frequency band of the ECG signal itself (such as power frequency interference, etc.).

[0010] Research on ECG signals: ECG signals are one of the earliest biological signals studied and applied in medical clinics. They are easier to detect than other biological electrical signals and have more intuitive regularity. Therefore, ECG analysis technology has promoted the development of medicine. ECG examination is an important method for clinical diagnosis of cardiovascular diseases. Accurate and automatic analysis and diagnosis of ECGs play a key role in cardiovascular diseases and are also a hot topic for scholars at home and abroad.

[0011] The significance of ECG signal examination: It is used to examine various arrhythmias, ventricular and atrial hypertrophy, myocardial infarction, arrhythmias, myocardial ischemia and other diseases. The ECG reflects the electrical activity process of cardiac excitement, and it has important reference value for the study of basic cardiac functions and pathology. The ECG examination must be combined with multiple indicators and clinical data for comprehensive analysis to make a correct judgment on the functional structure of the heart.

[0012] Basic composition of ECG signal: ECG signal consists of P, QRS, T wave and rest period, such as Figure 1 Each wave has different frequency characteristics and is a typical biomedical signal with obvious time-frequency characteristics and time-scale characteristics.

[0013] P.QRS.T waves and PR, ST, QT intervals all reflect changes in heart function to varying degrees. Therefore, automatic analysis and identification of heart function through algorithms has become a popular research direction.

[0014] Extraction of ECG signals: Biomedical signals are low-frequency weak signals under a strong noise background, and are unstable natural signals emitted by complex living organisms. Various physiological parameters such as ECG, EEG, EMG and other bioelectric signals, body temperature, blood pressure, respiration, blood flow, pulse, heart sounds, etc., temperature, pressure flow, force, displacement and other non-electrical signals, from the characteristics of the signal itself to the extraction method, are different from those in industrial engineering, and have their own particularities. The human body as a signal source is an extremely complex life system. The extraction and processing of human biomedical signals is relatively important in the field of natural science. The bioelectric phenomenon of the human body is picked up by electrodes using a certain lead method, and various non-electrical parameters are converted into electrical signals by various sensors and picked up. The electrode forms include skin surface electrodes, body surface electrodes, needle electrodes, microelectrodes, etc. There are many shapes of body surface electrodes, such as metal plate electrodes for limbs, metal disc electrodes pasted with adhesive tape, suction cup electrodes, floating surface electrodes, snap-on electrodes, and special forms of surface electrodes such as ear clip electrodes. The so-called electrode polarization refers to the formation of a double electric layer at the interface between the electrode and the electrolyte solution, and the change in the potential at the interface between the electrode and the electrolyte solution when current passes through, which generates a polarization voltage. The primary biological signal (Primary signal) is obtained by removing the interference of the original signal through the signal processing circuit, and then the signal (Secondary signal) that can reflect the functional characteristics of the organ is obtained through various calculations. The bioelectric guiding electrode actually completes the interface between the human body and the measurement system. In order to introduce the bioelectric signal into the signal processing module, the guiding electrode must have the ability to conduct current. In the human body, the current is conducted by ions, while in the test system, it is conducted by electrons. The guiding electrode converts the ion current into electron current, so the electrode actually acts as a transducer.

[0015] At present, there are two major types of products on the market: dual-electrode type and multi-electrode standard lead type. The dual-electrode type calculates the electrocardiogram by detecting the voltage difference between two points on the body. The distance between the two electrodes is short, so no lead wire is required. It is compact, easy to wear, and very convenient, but the electrocardiogram obtained is not a standard lead, and the diagnostic reference value is low. The electrocardiogram obtained by the multi-electrode standard lead type can match the standard library and has a high diagnostic reference value, but each electrode is led out through a wire. Since the multi-electrode standard lead type generally needs to collect electrocardiogram signals from more than six parts, resulting in a large number of lines connected to the electrocardiogram monitor, it is common for medical staff to misconnect the lead wires during electrocardiogram examinations. Too many lead wires are also easy to entangle and inconvenient to store; in addition, due to the limitation of the length of the lead wire, the electrocardiogram monitor needs to be close to the bed. If the equipment or bed needs to be moved, it is easy to cause the lead wire to be pulled off, which will have an adverse effect on subsequent diagnosis and treatment. On the other hand, during the electrocardiogram monitoring process, the guide wire will also restrict the patient's activities and make the patient feel uncomfortable. Utility Model Content

[0016] In order to solve the above-mentioned technical problems, the purpose of the utility model is to provide a wireless lead snap based on an electrocardiogram monitor, which has both wireless signal transmission and wireless power transmission functions, abandons the traditional mode of lead wires, overcomes many disadvantages of lead wire use, and thus solves the technical problems described in the background technology.

[0017] In order to achieve the above purpose, the specific technical solutions adopted by the utility model are as follows:

[0018] A wireless lead snap button based on an electrocardiogram monitor, the key of which is: comprising a snap button body, and an electrode sheet slot and an antenna interface arranged on the snap button body, a first installation cavity, a second installation cavity and a third installation cavity are reserved in the snap button body, an energy storage battery is arranged in the first installation cavity, a signal conditioning circuit, a signal transmitting circuit and an energy receiving circuit are integrated in the second installation cavity, and an energy receiving coil is arranged in the third installation cavity;

[0019] Among them: the ECG signal of the object to be tested is sensed by plug-in electrode sheets, and the ECG signal is conditioned and amplified by a signal conditioning circuit. The conditioned and amplified signal is encoded by a signal transmitting circuit and converted into a digital signal, and then the digital signal is transmitted to the host of the ECG monitor by plugging in a gain antenna to draw a graph; the energy receiving coil receives electromagnetic waves and converts them into direct current through the energy receiving circuit and outputs them to the energy storage battery; the energy storage battery is used for power supply.

[0020] Furthermore, the first installation cavity is an annular chamber formed between the inner and outer double-layer shells, one side of which is reserved with a battery installation opening that can be closed by a first end cover, and the inner cavity of the inner shell serves as an electrode sheet slot.

[0021] Furthermore, the energy storage battery is arranged in a ring shape to adapt to the shape of the first installation cavity.

[0022] Furthermore, the second installation cavity is composed of a single-layer shell, the bottom of which is tightened and provided with the antenna interface, and a circuit installation opening that can be closed by a cover plate is also opened on one side of the second installation cavity.

[0023] Furthermore, a third installation cavity is formed on the cover plate in a protruding manner, and a coil installation opening that can be closed by a second end cover is also opened on one side of the third installation cavity.

[0024] Furthermore, the energy receiving coil is a tubular spiral coil, and a winding pile for facilitating coil winding is also provided in the third installation cavity.

[0025] Furthermore, a magnetic ring is arranged between the winding pile and the energy receiving coil.

[0026] Furthermore, a magnetic shielding sleeve is provided between the magnetic ring and the winding pile, and the lower edge of the magnetic shielding sleeve is turned outward to extend to the bottom of the energy receiving coil.

[0027] The beneficial effects of the utility model are:

[0028] (1) The inner cavity space of the snap button body is reasonably divided into different zones, so that the electrical components can operate independently in their respective spaces, thereby reducing the mutual influence between the electrical components, avoiding the interference of energy transmission on signal transmission, overcoming technical problems such as signal distortion and signal interruption, and also ensuring that the internal wiring of the snap button body is more regular and the structure is more compact;

[0029] (2) The application of wireless signal transmission technology eliminates the need for lead wires, greatly optimizing the operating environment and overcoming problems such as lead wire misconnection, lead wire entanglement, lead wire pulling and falling off, and inconvenient lead wire storage. The patient's restraint during ECG monitoring is relieved, which helps to reduce the patient's discomfort. At the same time, medical staff can flexibly adjust the relative position of the bed and the equipment according to the operating environment, which is easy to use and improves the efficiency of ECG monitoring.

[0030] (3) Electric energy is transmitted by wireless coupling, and the lead snaps do not need to be plugged into a charging cable during the charging process, which avoids frequent plugging and unplugging of the lead snaps for charging when in use. When they are idle, they can be placed on a matching wireless charger for automatic charging to meet the needs of the next application. At the same time, the use of wireless charging is also conducive to improving the sealing performance of the lead snaps, making it easier for patients to wear them in various scenarios, making them more convenient and flexible to use, and truly realizing the "all-wireless" application of ECG monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0032] Figure 1 It is a stereoscopic diagram of the wireless lead snap based on the electrocardiogram monitor in the first embodiment;

[0033] Figure 2 A half-section diagram (I) of the wireless lead snap button based on the electrocardiogram monitor in the first embodiment;

[0034] Figure 3 A half-section diagram (II) of the wireless lead snap button based on the electrocardiogram monitor in the first embodiment;

[0035] Figure 4 A half-section view (III) of the wireless lead snap button based on the ECG monitor in the first embodiment;

[0036] Figure 5 The first embodiment is an exploded view of the wireless lead snap button based on the electrocardiogram monitor;

[0037] Figure 6 It is an exploded view (II) of the wireless lead snap based on the ECG monitor in the first embodiment;

[0038] Markings in the figure: 1- snap body, 2- electrode sheet slot, 3- antenna interface, 4- first installation cavity, 5- second installation cavity, 6- third installation cavity, 7- energy storage battery, 8- signal conditioning circuit, 9- signal transmitting circuit, 10- energy receiving circuit, 11- electrode sheet, 12- gain antenna, 13- first end cover, 14- cover plate, 15- second end cover, 16- winding pile, 17- magnetic ring, 18- magnetic shielding sleeve, 19- energy receiving coil. DETAILED DESCRIPTION

[0039] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0041] Figures 1 to 6 The first embodiment of the utility model is shown: a wireless lead snap button based on an electrocardiogram monitor, comprising a snap button body 1, and an electrode sheet 11 slot 2 and an antenna 12 interface 3 arranged on the snap button body 1, wherein a first installation cavity 4, a second installation cavity 5 and a third installation cavity 6 are reserved in the snap button body 1, an energy storage battery 7 is arranged in the first installation cavity 4, a signal conditioning circuit 8, a signal transmitting circuit 9 and an energy receiving circuit 10 are integrated in the second installation cavity 5, and an energy receiving coil 19 is arranged in the third installation cavity 6; wherein: the electrocardiogram signal of the object to be measured is sensed by plugging in the electrode sheet 11, and the electrocardiogram signal is conditioned and amplified by the signal conditioning circuit 8, the conditioned and amplified signal is encoded by the signal transmitting circuit 9 and converted into a digital signal, and then the digital signal is transmitted to the host of the electrocardiogram monitor by plugging in the gain antenna 12 to draw a graph; the energy receiving coil 19 receives electromagnetic waves, and converts them into direct current through the energy receiving circuit 10 and outputs them to the energy storage battery 7; the energy storage battery 7 is used for power supply.

[0042] like Figure 5 and Figure 6 As shown, in a specific implementation, the first installation cavity 4 is an annular cavity formed between the inner and outer double-layer shells, one side of which is reserved with a battery installation port that can be closed by the first end cover 13, and the inner cavity of the inner shell is used as the electrode sheet 11 slot 2. Preferably, the energy storage battery 7 is adapted to the shape of the first installation cavity 4 and is set to be annular.

[0043] from Figure 2 and Figure 6It can be seen that the second installation cavity 5 is composed of a single-layer shell, the bottom of which is tightened and provided with the antenna 12 interface 3, and a circuit installation port that can be closed by a cover plate 14 is also opened on one side of the second installation cavity 5. In order to facilitate wiring, a threading hole is provided on the supply cavity wall of the second installation cavity 5 and the second installation cavity 5. A third installation cavity 6 is formed on the cover plate 14, and a coil installation port that can be closed by a second end cover 15 is also opened on one side of the third installation cavity 6. The energy receiving coil 19 adopts a tubular spiral coil, and a winding pile 16 is also provided in the third installation cavity 6 for easy coil winding. In order to limit the magnetic field direction of the energy receiving coil 19, thereby improving the efficiency of wireless energy transmission, a magnetic ring 17 is also arranged between the winding pile 16 and the energy receiving coil 19. In order to prevent the influence of wireless energy transmission on wireless signal transmission, a magnetic shielding sleeve 18 is also provided between the magnetic ring 17 and the winding pile 16, and the lower edge of the magnetic shielding sleeve 18 is turned outward to extend to the bottom of the energy receiving coil 19. Preferably, the winding pile 16 adopts a hollow structure, and its inner cavity is connected to the second installation cavity 5. The winding pile 16, the magnetic shielding sleeve 18 and the magnetic ring 17 are provided with threading structures (such as threading holes, threading gaps, etc.) to facilitate circuit layout.

[0044] In summary, the inner cavity space of the snap button body 1 is reasonably divided into two parts, so that the electrical components can operate independently in their respective spaces, which can reduce the mutual influence between the electrical components, avoid the interference of energy transmission on signal transmission, and overcome technical problems such as signal distortion and signal interruption. At the same time, it can also ensure that the internal wiring of the snap button body 1 is more regular and the structure is more compact. The application of wireless signal transmission technology eliminates the need for lead wires, greatly optimizes the operating environment, and overcomes problems such as wrong connection of lead wires, lead wire entanglement, lead wire pulling and falling off, and inconvenient lead wire storage. The patient's restraints during ECG monitoring can be released, which is beneficial to It reduces the patient's discomfort. At the same time, medical staff can flexibly adjust the relative position of the bed and the equipment according to the operating environment. It is easy to use and improves the efficiency of ECG monitoring. Electric energy is transmitted by wireless coupling. The lead snaps do not need to be plugged in a charging cable during the charging process, avoiding frequent plugging and unplugging of the lead snaps for charging during use. When they are idle, they can be placed on the matching wireless charger for automatic charging to meet the needs of the next application. At the same time, wireless charging is also conducive to improving the sealing performance of the lead snaps, making it easier for patients to wear them in various scenarios. It is more convenient and flexible to use, truly realizing the "all-wireless" application of ECG monitoring.

[0045] Finally, it should be noted that the technical solution disclosed above is only a preferred embodiment of the present utility model, and it certainly cannot be used to limit the scope of rights of the present utility model. Ordinary technicians in this field can understand that all or part of the processes of the above-mentioned embodiments and equivalent changes made according to the claims of the present utility model still fall within the scope covered by the utility model.

Claims

1. A wireless lead snap button based on an electrocardiogram monitor, characterized in that: The snap button body comprises an electrode sheet slot and an antenna interface arranged on the snap button body, wherein a first installation cavity, a second installation cavity and a third installation cavity are reserved in the snap button body, an energy storage battery is arranged in the first installation cavity, a signal conditioning circuit, a signal transmitting circuit and an energy receiving circuit are integrated in the second installation cavity, and an energy receiving coil is arranged in the third installation cavity; Among them: the ECG signal of the object to be tested is sensed by plug-in electrode sheets, and the ECG signal is conditioned and amplified by a signal conditioning circuit. The conditioned and amplified signal is encoded by a signal transmitting circuit and converted into a digital signal, and then the digital signal is transmitted to the host of the ECG monitor by plugging in a gain antenna to draw a graph; the energy receiving coil receives electromagnetic waves and converts them into direct current through the energy receiving circuit and outputs them to the energy storage battery; the energy storage battery is used for power supply.

2. The wireless lead snap button based on the ECG monitor according to claim 1, characterized in that: The first installation cavity is an annular chamber formed between the inner and outer double-layer shells, one side of which is reserved with a battery installation opening that can be closed by a first end cover, and the inner cavity of the inner shell serves as an electrode sheet slot.

3. The wireless lead snap button based on the ECG monitor according to claim 2, characterized in that: The energy storage battery is adapted to the shape of the first installation cavity and is arranged in a ring shape.

4. The wireless lead snap button based on the ECG monitor according to claim 3, characterized in that: The second installation cavity is composed of a single-layer shell, the bottom of which is tightened and provided with the antenna interface, and a circuit installation opening that can be closed by a cover plate is also opened on one side of the second installation cavity.

5. The wireless lead snap button based on the ECG monitor according to claim 4, characterized in that: A third installation cavity is formed by protruding outwards on the cover plate, and a coil installation opening that can be closed by a second end cover is also opened on one side of the third installation cavity.

6. The wireless lead snap button based on the ECG monitor according to claim 5, characterized in that: The energy receiving coil is a tubular spiral coil, and a winding pile is provided in the third installation cavity to facilitate coil winding.

7. The wireless lead snap button based on the ECG monitor according to claim 6, characterized in that: A magnetic ring is further arranged between the winding post and the energy receiving coil.

8. The wireless lead snap button based on the ECG monitor according to claim 7, characterized in that: A magnetic shielding sleeve is also arranged between the magnetic ring and the winding pile, and the lower edge of the magnetic shielding sleeve is turned outward to extend to the bottom of the energy receiving coil.

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