TWM523433U - Electrode device for wearable or portable apparatus - Google Patents

Abstract

An electrode device has a conductive body, a silver layer above the conductive body, a silver compound layer above the silver layer, a liquid absorbing and releasing element, a shielding element covering an upper surface and a portion of a side surface of the liquid absorbing and releasing element, and a moving mechanism configured to allow the shielding element to move between at least two positions.

Description

Physiological electrode device for wearable or handheld devices

The present invention relates to a physiological electrode device for a wearable or handheld device, and more particularly to a physiological electrode device for a wearable or handheld device for recording electrophysiological signals.

Since 1900, the first cause of death in the United States has been heart disease. Most of the heart disease can be diagnosed early by electrocardiogram. However, for early heart disease, the ECG is not abnormal every time but is abnormal. The characteristics caused by such sporadic abnormalities are, for example, daily. Only one or two times of chest pain or nausea continued for a few seconds. In addition, the patient's ECG at other times was normal. This abnormal ECG is an important basis for diagnosing heart disease. To record the abnormal abnormal ECG, the best effect is the Holter ECG recorder, which can continuously record the electrocardiogram of the limb and chest lead of about 100,000 heart beats for 24 hours, followed by cardiology. The doctor carefully interpreted it. However, using the Hult ECG recorder to attach a lot of physiological electrodes to the body, this can make people feel itchy. The only standard physiological electrode currently approved for medical applications is the silver/silver chloride/potassium chloride (Ag/AgCl/KCl) structure (refer to ANSI/AAMI EC12: Disposable ECG electrodes), which is also general electrochemical and electrical. Structures commonly used in physiological research. The physiological electrode has silver, a silver chloride film oxidized from the surface of the silver sheet, and a gel rich in potassium chloride. Apply this physiological electrode to the skin The electrophysiological signals generated by the action of potassium ions and chloride ions on the heart, muscle or brain cells can pass through the large blood vessels to the small blood vessels (the blood is a good conductor) and then pass through the sweat glands of the skin (the sweat contains potassium, sodium and chloride ions). Conductive) conducts to the potassium chloride/silver chloride/silver interface. The electrocardiogram device converts the electrophysiological signals present in the blood (Cl-, Na+, HCO-, K+, etc.) into metal conductors (silver, copper, etc.) by the two electrochemical reactions listed below. Electron/hole flow in an electron stream or semiconductor. Even if the electron flow or the electron/hole current flows in different conductors (silver, copper, or tantalum), the noise caused by the interface is still negligible, so it can be easily amplified, filtered, etc. in the integrated circuit. .

Ag Ag ⁺ +e-; Ag ⁺ +Cl- AgCl; The reason why potassium chloride is used instead of sodium chloride in the gel is because the diffusion rate of chloride ions and potassium ions in water is very close, and the membrane potential caused by the semi-permeable membrane is small when diffused. . In contrast, the diffusion rates of chloride ions and sodium ions in water are far apart, and it is easy to form an additional membrane potential, which interferes with the physiological signals to be extracted and leads to less accurate results. However, the intracellular fluid has a higher potassium ion concentration, while the extracellular fluid, blood, and sweat have a lower potassium ion concentration, which is insufficient to cause a stable potential. Therefore, it is not desirable to conduct the sweat only by the epidermis, and it is necessary to add chlorination. Potassium solution. In a standard physiological electrode conforming to ANSI/AAMIEC12, the half-cell potential formed by the above electrochemical reaction is maintained as long as the temperature of the electrode is close to the body temperature and the concentration of both silver ions and chloride ions in the gel remains stable. It will be stable, and it will be able to successfully obtain electrophysiological signals. Electrophysiological signals are transmitted to the analog electrodes and then to the digital circuit, and then processed by firmware and software to form an electrocardiogram (ECG), electromyography (EMG), and EEG. (EEG), etc., used to diagnose various diseases to maintain human health. In practical applications, silver is more expensive and softer. Therefore, a hard copper alloy is often used as a body, and a silver film is plated on one side of the body, and then the silver film is immersed in a dilute hydrochloric acid to be anodized, and the silver surface is oxidized. A silver chloride film is formed; tin, nickel, or gold is plated on the other side of the copper body to prevent oxidation of the copper body in the air, so that the copper body can contact or solder other conductors to connect the semiconductor circuit. At present, the physiological electrode commonly used in hospitals is disc-shaped, and its core is a silver/silver chloride piece with a diameter of about 10 mm, one side has a gel to contact the skin and the other side has a snap-in button to borrow. It is connected by wires to an electrocardiograph, an electromyograph or an electroencephalograph.

Please refer to Figure 1. Figure 1 shows the limbs defined by the Einthoven triangle. For electrocardiograms, the most commonly used for disease diagnosis is the limbs I, II, III (limb limbs I, II, III) as defined by the Einthoven triangle shown in Figure 1.

By definition, to obtain a limb, the electrodes can be placed anywhere on the upper and lower limbs. However, in practical applications, the electrode is usually attached to the inside of the wrist or the ankle, because this part of the electrode is only a thin tendon between the blood vessels and has almost no muscle, so the muscle movement can be avoided to interfere with the limbs. Artifact), for example, the inevitable respiratory motion of the human body will inevitably cause baseline wandering of the limb I (limb I). For the diagnostic electrocardiogram to be examined by cardiologists, high quality and low interference are required. Therefore, the patient must be allowed to lie down and put electrodes on the inside of the wrist and ankle to avoid motor interference. For hand-held or wearable devices, it is often used to extract human electrophysiological signals in the activity, not in the recumbent, and will inevitably face more serious motion disturbances.

Although the silver/silver chloride/potassium chloride (Ag/AgCl/KCl) structure electrode can obtain good quality electrocardiogram, long-term exposure to silver, chlorine, potassium ions and gel will make the skin red and itchy and uncomfortable. In more than two days, it may be ulcerated and inflamed, which is common in intensive care units. And tied an ECG machine on the body, seriously disturbing daily life and rest, most of the heart disease patients wear a day later, they are not willing to wear. In order to solve this problem, there are many hand-held or wearable event records available on the market. Record the ECG recorder, so that patients can take ECG signals when they feel uncomfortable. They usually do not touch the skin and do not take ECG signals to avoid itching. Because the gel will stick, causing discomfort and affecting daily life, and the silver chloride is dark brown, which is neither beautiful nor exfoliated, so most of the handheld or wearable event recording electrocardiographs are not used. The standard silver/silver chloride/potassium chloride (Ag/AgCl/KCl) physiological electrode does not use a gel. Instead, it uses a metal or a conductive compound as a conductor to directly touch the human body to extract physiological signals. It is called a dry electrode. As studied by Michael Neuman et al. (refer to Neuman, MRChap. 48, "Biopotential Electrodes." in "The Biomedical Engineering Handbook: Second Edition", Edited by Joseph D. Bronzino), compared to standard silver/chlorine Silver/KCl physiological electrode, dry electrode has high impedance, unstable interface potential, and is susceptible to temperature changes, resulting in low frequency drift or high frequency (60Hz or radio frequency) noise, so it is obtained by dry electrode. The electrophysiological signal quality is very poor. This is because the dry electrode does not have a stable electrochemical reaction to maintain the interface potential, and it does not have a gel to preserve the potassium chloride aqueous solution itself, and must rely on the skin's moisture (sweat) to conduct physiological signals to the electrocardiogram circuit. Potassium ions in sweat are much less than sodium ions, and membrane potential interference is formed when ions diffuse, forming a low-frequency drift. Especially in the dry and cold environment, the water on the skin is very small, it is difficult to provide sufficient conductivity, and the noise interference is very serious.

Referring to Figure 2, Figure 2 shows an ideal limb I electrocardiogram. Since the P wave, the T wave, and the U wave in the electrocardiogram are all low frequency and small amplitude signals, only the amplitude of the QRS complex is large, so for electrocardiogram (ECG), electromyography (EMG), and electroencephalogram ( EEG) For the three reasons, the ECG is most susceptible to low frequency drift interference. The dry electrode often has low frequency drift or high frequency (60Hz or radio frequency) noise, so that P wave, T wave, U wave, etc. are submerged in the noise (refer to Figure 2 of US 2014/0249398 A1), only the amplitude is larger. The QRS complex can be identified. Only the ECG of the QRS complex can be identified and can only be used to calculate the heart. Rate or heart rate variability (HRV) analysis, but not enough for routine heart disease diagnosis.

There is also a serious shortcoming of the dry electrode, which is not conducive to the application of the event recording electrocardiograph, that is, the reaction is very slow, and it is often necessary to obtain the signal after the electrode contacts the skin for more than ten seconds. This is hard to say for early heart disease patients whose abnormal ECG lasts only a few seconds. The reason why the dry electrode reaction is very slow is as follows.

Referring to Figure 3, Figure 3 is a circuit diagram showing the transmission of physiological signals through the skin and electrodes to an electrophysiological signal amplifying circuit. The input end of the conventional electrophysiological signal amplifying circuit is an instrumentation amplifier (refer to the AD8220 specification produced by Analog Devices Inc.). In order to protect the instrumentation amplifier from static damage of the human body and reduce radio interference, the input terminal must be equipped with some resistors. Capacitors and diodes. In addition, the output of the instrumentation amplifier has high-pass and low-pass filters consisting of resistors and capacitors. Before the electrodes contact the human body, the capacitance of these capacitors and diodes is likely to cause the output of the instrumentation amplifier to drift to the upper saturation or lower saturation region, and the electrophysiological signals cannot be presented; after the electrodes contact the human body, these capacitors and diodes The body begins to be charged or discharged by the human body. After reaching a steady state, the output of the instrumentation amplifier floats back to the linear region to present an electrophysiological signal. The time that the electrode contacts the human body to the instrumentation amplifier to present the electrophysiological signal is called the transient time. If a standard physiological electrode (according to AAMI EC12) is used, since its resistance is less than 3 kilohms (4.2.2.1, AAMI EC12), its transient time is usually much lower than one second, which is almost impractical for the user; Dry electrodes are used in dry and cold environments. Because their resistance can be as high as several million ohms, the transient time can be as long as ten seconds. For patients who immersed in a physician's office for three minutes to draw a complete 12-lead ECG with standard physiological electrodes, the transient time was almost unaffected for more than ten seconds; however, for use Wearable or hand-held devices For patients who occasionally have an abnormal ECG for a few seconds, the length of the transient period determines whether it is practical or not.

In summary, the quality of the electrocardiogram taken by the dry electrode is not good. It can only be used to calculate heart rate or perform heart rate variability analysis, but it is not enough for routine heart disease diagnosis. If it is applied to handheld or wearable event recording electrocardiograph, There is still no perfection. U.S. Patents 5,289,824 and 5,613,495 request a wristwatch-type event recording electrocardiograph, which has been approved by the U.S. Government (K945476, trade name Hearth Watch III). In this product, the electrode is located on the inside of the body and is used for long-term contact with the wrist of the watch. When using this product, the wearer touches the electrode on the upper surface of the heart rate monitor with the finger of the wristless hand, so that the right and left hands touch each electrode, the R peak of the electrocardiogram can be obtained to calculate the heart rate. However, the electrode of this product uses titanium which is not easily rusted, or is coated with conductive titanium nitride, titanium carbide or titanium carbonitride to make the electrode surface more beautiful. It does not use silver/silver chloride tablets and does not use potassium chloride aqueous solution. When the finger skin is thick and dry, it is difficult to conduct electricity, and it is necessary to wait for a long time to obtain an electrocardiogram. In addition, the skin resistance of the finger skin is large, and the ECG signal is susceptible to interference by 60 Hz, radio and muscle movement.

US 5,778,882 discloses a portable health information tracking device, but does not describe its electrode architecture.

US 6,587,712 B1 discloses a portable ECG monitoring device having a probe (containing two electrodes) similar to a stethoscope held by a user. The ECG signal is obtained when the user presses the probe on the thorax. However, the ECG signal thus obtained is not a limb-guided electrocardiogram defined by Einthoven, nor does the patent describe the electrode material.

US 7,171,259 B2 states the disadvantages of previous wrist-type heart rate measuring devices: the user only touches the outside of the wrist with the fingertip of one finger, so the relative position of the two hands is unstable, the finger muscles The activity caused interference, and the contact area was too small and the skin was too dry. The ECG signal obtained was so unstable that it was difficult to interpret. This patent proposes an improved architecture in which a plurality of electrodes are placed on the outside of the wristwatch to allow the user to "loop" the wristwatch with two fingers (for example, a circle formed by the index finger and the thumb), so that the relative positions of the two hands are relatively stable. And the contact area is large, and the better ECG signal quality can be obtained. This patent also proposes to use a transparent conductive material such as Indium-Tin-Oxide (ITO) on the surface to make the surface function as an electrode to obtain a large contact area. However, this patent does not propose silver/silver chloride/chlorination. Potassium electrode architecture.

US 7,197,351 B2 discloses a hand-held device having a housing with two electrodes, one for contact when the user holds the right hand, and the other electrode at the bottom side of the device to contact the left chest to obtain the limb conduction electrocardiogram of the limb I . This patent does not specify the electrode material. It must be naked to the left chest when used. The right hand electrode is connected to the big blood vessel of the wrist through the muscles of the palm and fingers. Therefore, the right hand must be properly applied to hold the device and touch the left chest. Inevitably interfered with right hand muscle movement.

US 7,471,976 B2 discloses a business card type handheld device having a gel-free electrode on each side for contact with a user's finger to obtain an electrocardiogram. This patent only states that the material of the electrode is a conductive metal or rubber, and an aqueous solution of potassium chloride is not used.

US 7,894,888 B2 discloses a wristwatch type ECG signal recorder having an electrode in the inner layer of the watch body and two electrodes on the outer layer of the body and the watch band. Touch the wrist and the lower left abdomen to the trilogy guide defined by Einthoven. This patent proposes to use a pressure, infrared or electrical impedance sensor to know if the electrode is in contact with the body to activate the ECG circuit in a timely manner, but the patent does not describe the electrode material.

US 7,896,811 B2 discloses a hand-held device (such as a mobile phone) having two electrodes and two pressure sensors mounted on the casing. However, this patent does not describe the material of the electrode, nor does it use an aqueous solution of potassium chloride.

US 8,082,762 B2 discloses an electrode comprising a conductive material and a resilient textile, mounted on the garment. One of the embodiments is a silver plated copper wire and a silver metalized nylon yarn, but the function is conductive, not silver/silver chloride structure, so it cannot maintain a stable state. Electrochemical potential.

US Pat. No. 8,214,008 B2 discloses the use of a conductive material and a flexible textile as an electrode for mounting on a garment. One embodiment is a fiber containing silver particles, but the function is conductive, not a silver/silver chloride structure. A stable potential potential cannot be maintained.

US 8,244,336 B2 and US 8,095,199 B2 disclose a hand-held device having a housing with two electrodes, one for contact when the user holds the right hand, and the other electrode at the bottom side of the device to contact the left chest to obtain the limb guide I The limb leads the electrocardiogram. This patent does not list the electrode material. It must be naked to the left chest when used. The right hand electrode is connected to the big blood vessel of the wrist through the muscles of the palm and fingers. When using it, the right hand must be properly applied to hold and touch the left chest. Inevitably interfered with right hand muscle movement.

US 8,359,088 B2 discloses a jacket designed for folding mobile phones with a pair of electrodes made of stainless steel, copper or brass to capture the electrocardiogram.

US 2009/0048526 A1 is also a wristwatch type ECG signal recorder that uses a pulse signal obtained by a single wrist rather than a double wrist to detect the heartbeat. This recorder can obtain heart rate, and then calculate heart rate variability from heart rate, but can not get the limb conduction ECG defined by Einthoven. The physiological or pathological information that this recorder can provide is far less than the limb-guided electrocardiogram.

US 2011/0066042 A1 discloses a hand-held device that contains an electrocardiogram, a heart sound, and an acceleration sensing circuit. This patent does not describe the material of the electrode.

US 2013/0261414 A1 discloses a hand-held device comprising two electrodes and two photoplethysmograph (PPT) sensors for obtaining an electrocardiogram and a pulse wave signal from two index fingers. However, this patent application does not describe the material of the electrode, nor does it use an aqueous solution of potassium chloride.

US 2014/0249398 A1 discloses a method for calculating a Pulse Transient Time (PTT) using a handheld device (for example, a mobile phone), which uses an handheld device provided with two electrodes to obtain an ECG signal from both hands and utilizes the installation. The camera on the handheld device takes the pulse signal from the pupil, and the time difference between the two is used as the pulse transmission time. The material of the electrode is not described in this patent application.

The above prior art uses dry electrodes, and thus has disadvantages such as high impedance, baseline drift, and long transient time. In order to overcome the above disadvantages, a product of the size of a business card (K012012, trade name ecg@home), which is protected by US Patent No. 5,928,141 and US 6,345,196 B1 and licensed by the US government, implements a hand-held device of approximately the size of a business card, each of which is provided with a silver/chlorine The silver electrode is contacted by the user's finger, and the surface of the electrode is filled with small holes to accommodate the potassium chloride aqueous solution. This product is stored in a bag or a pocket when it is not used. When it is used, it needs to drop the potassium chloride solution at the electrode to increase the conductivity. It can start recording. This preparation process takes about ten seconds, only a few seconds for chest pain. In the early heart of the bell, it is not easy to get an abnormal ECG.

In summary, it is necessary to take occasional abnormal ECG for disease diagnosis and do not want to stick the electrode for a long time. The preferred method is to use a handheld or wearable device equipped with a silver/silver chloride/chlorinated electrode. (Mobile phone or wristwatch), combined with the application of an aqueous solution of potassium chloride in the proper part of the body without causing discomfort caused by the gel. Preferably, the skin in contact with the electrode and the large blood vessel The muscle-free, hand-held or worn posture is preferably a posture that allows the user to relax as much as possible without having to force the muscles to interfere. After the recording is completed, the electrodes stop contacting the skin to avoid skin irritation and itching.

The purpose of the present invention is to provide a physiological electrode device for a wearable or handheld device that is easy to use, has no physiological burden, and is recorded accurately and reliably. In one aspect, the physiological electrode device comprises a conductive body, a silver layer above the conductive body, a silver compound layer above the silver layer, a liquid adsorption and release element above the silver compound layer, a blocking member covering the upper surface and a portion of the side surface of the liquid adsorption and release member, and a moving mechanism for reciprocating the blocking member between at least two positions.

In an embodiment in accordance with the present invention, the blocking element is for coupling with a spring, or with a fastener, or with a microswitch.

In an embodiment in accordance with the present invention, the blocking element is a curved sheet-like structure having an elastically flexible material.

In an embodiment in accordance with the present invention, the blocking element has an inwardly extending edge to grip the liquid adsorption and release element.

In an embodiment in accordance with the present invention, the silver layer and the silver compound layer together have an inwardly extending edge to grip the liquid adsorption and release element.

Another object of the present invention is to provide a wearable device for recording an electrocardiogram that is easy to use, has no physiological burden, and is recorded accurately and reliably. In one aspect, the wearable device for recording an electrocardiogram includes an inner surface of the wearable device and a wearer facing the inner surface of the wearable device. The outside of the wearable device, a body, and a first electrode and a second electrode. The body comprises an electrocardiogram amplifying circuit, a microcontroller, a memory, a battery and a control firmware. Each of the first electrode and the second electrode includes a silver layer and a silver compound layer, a blocking element, a liquid adsorption and release element, and a moving mechanism. The first electrode is located at the inner surface of the wearable device and is disposed between one of the radial artery and the one-foot artery of a wrist. The second electrode is located outside of the wearable device. The first electrode and the second electrode system are respectively connectable to two input ends of the electrocardiogram amplifying circuit.

In an embodiment of the present invention, the wearable device for recording an electrocardiogram further includes a third electrode device located outside the wearable device, the third electrode device comprising a silver layer and a silver compound layer, a blocking element, a liquid adsorption and release element, and a moving mechanism. The third electrode device is connected to a third input end of the electrocardiogram amplifying circuit.

In an embodiment in accordance with the present invention, the wearable device for recording an electrocardiogram is a wristwatch.

In an embodiment in accordance with the present invention, the electrocardiogram is transmitted to other communication devices for display, storage, analysis, and/or diagnostics using one of the built-in wireless transmission devices.

A further object of the present invention is to provide a hand-held device for recording an electrocardiogram that is easy to use, has no physiological burden, and is recorded accurately and reliably. In one aspect, the handheld device for recording an electrocardiogram includes a device body having a first face and a second face opposite the first face, and a first electrode device and a second electrode device. The device body further comprises an electrocardiogram amplifying circuit, a microcontroller, a wireless transmission circuit, a memory, a battery and a control firmware. The first electrode device is located on the first side of the apparatus body and includes a silver layer and a silver compound layer and a liquid adsorption and release element. The second electrode device is provided with a rotating arm and a The hub is connected to the device body. The first electrode device and the second electrode device are electrically connected to the two input ends of the electrocardiogram amplifying circuit, respectively. When the handheld device is in a state of not recording, the second electrode device is configured to cover the first electrode device to prevent the first electrode device from being exposed. When the handheld device is to perform recording, the first device The two electrodes are configured to be flipped over to the second side of the body to expose the first electrode device and the second electrode device for contact with a user.

In an embodiment in accordance with the present invention, the handheld device for recording an electrocardiogram further includes a permanent magnet or a spring for abutting the second electrode device against the first electrode device.

In an embodiment according to the present invention, the handheld device for recording an electrocardiogram further includes a third electrode device located on one side of the handheld device and electrically connected to a third input end of the electrocardiographic amplifying circuit. The third electrode device comprises a silver layer and a silver compound layer, a blocking element, a liquid adsorption and release element, and a moving mechanism.

A further object of the present invention is to provide a wrist-worn device for recording an electrocardiogram that is easy to use, has no physiological burden, and is recorded accurately and reliably. In one aspect, the wrist worn device for recording an electrocardiogram includes a main wristband and a wristband, wherein the primary wristband and the secondary wristband are respectively worn on a wrist of a user. The main wristband includes a body, a first strap, a first electrode device, a first conductive contact, and two first connecting wires. The body includes an electrocardiogram amplification circuit, a microcontroller, a battery, a memory and a control firmware. The first electrode device is located inside the first strap and is disposed between one of the radial artery and the one-foot artery of a wrist. The first electrode device comprises a first silver layer and a first silver compound layer, a first blocking element, a first liquid adsorption and release element, and a first moving mechanism. The first electrode device is connected to one of the first input ends of the electrocardiogram amplifying circuit by one of the two first connecting lines, and the first conductive contact is the other of the two first connecting lines One is connected to the electrocardiogram amplification circuit a second input. The secondary wristband includes a second strap, a second conductive contact, a second electrode assembly, and a second connecting line. The second electrode device is located inside the second strap and is placed between one of the radial artery and the one-foot artery of the other wrist. The second electrode device comprises a second silver layer and a second silver compound layer, a second blocking element, a second liquid adsorption and release element, and a second moving mechanism. The second conductive contact is connected to the second electrode device by the second connection line.

In an embodiment in accordance with the present invention, the main wristband further includes a switch. The switch presents different logic states to the microcontroller when the main wristband and the secondary wristband are in contact with each other.

When the physiological electrode for the wearable or hand-held device of the present invention does not perform electrophysiological signal recording, the blocking member covers the electrode to prevent the skin from contacting the body to cause skin irritation and itch and prevent the electrochemical solution from evaporating; when performing physiological signal recording The user can quickly and easily disengage the blocking element to expose the electrode to the body and simultaneously squeeze the liquid adsorption and release element to release the electrochemical aqueous solution. Thereby, the electrochemical solution can be applied to the electrodes to form a good electrical conductor, which greatly shortens the transient time, and immediately obtains low-noise and high-quality electrophysiological signals. The use of physiological electrodes for wearable or handheld devices of the present invention can improve the lack of prior art, and accurately record abnormal electrocardiograms of early heart disease without causing skin discomfort.

1‧‧‧Electrical ontology

2‧‧‧ Silver layer

2'‧‧‧ Silver compound layer

3‧‧‧blocking elements

4‧‧‧Liquid adsorption and release components

5‧‧‧Blocking components

6‧‧‧Mobile agencies

7‧‧‧ position

8‧‧‧blocking elements

9‧‧‧ position

10-1‧‧‧Mobile agencies

10-2‧‧‧Mobile agencies

11‧‧‧ Spring

12‧‧‧ Spring

12’‧‧·spring

14‧‧‧fasteners

15‧‧‧fasteners

17‧‧‧Bumps

18‧‧‧ cantilever

41‧‧‧blocking elements

42‧‧‧Silver and silver compound layers

43‧‧‧Liquid adsorption and release components

51‧‧‧ wrist radial artery

52‧‧‧ wrist ulnar artery

54‧‧‧ inside the watch

55‧‧‧ outside the watch

61‧‧‧First outer electrode device

62‧‧‧Second outer electrode device

63‧‧‧Inner electrode device

81‧‧‧ inside the watch

82‧‧‧ outside the watch

83‧‧‧Inner electrode device

84‧‧‧External electrode device

85‧‧‧Connecting line

86‧‧‧Connecting line

87‧‧‧Table Ontology

88‧‧‧Belt

101‧‧‧First electrode device

102‧‧‧Second electrode device

103‧‧‧ hub

104‧‧‧ Hub

105‧‧‧Rotary arm

106‧‧‧Rotary arm

121‧‧‧Second electrode device

122‧‧‧First electrode device

123‧‧‧third electrode device

Side view of the state when A‧‧‧ does not take electrophysiological signals

B‧‧‧ State side view when taking electrophysiological signals

LA‧‧‧Contact left-handed electrode

RA‧‧‧Contact the right hand electrode

LL‧‧‧Contact the electrode of the left leg

Figure 1 shows the limbs defined by the Einthoven triangle.

Figure 2 shows the ideal limb I electrocardiogram.

Figure 3 is a circuit diagram showing the transmission of physiological signals through the skin and electrodes to an electrophysiological signal amplifying circuit.

4A shows a cross-sectional view of a physiological electrode device in accordance with an embodiment of the present invention.

4B and 4C show top views of the moving mechanism and the blocking element in accordance with various embodiments of the present invention, and also show the position of the blocking element before and after the movement.

Figures 4D and 4E show variations of the embodiment of Figures 4B and 4C, which also show the position of the blocking element before and after the movement.

4F shows a schematic view of a fastener in accordance with an embodiment of the present invention.

FIG. 5 shows a system architecture of a physiological electrode device applied to a wearable or handheld electrocardiograph in accordance with an embodiment of the present invention.

Figure 6 shows a cross-sectional view of a physiological electrode device in accordance with another embodiment of the present invention.

Figure 7A shows a top and bottom plan view of a wristwatch incorporating a physiological electrode device of the present invention, in accordance with an embodiment of the present invention.

Fig. 7B shows the state of use of the wristwatch of Fig. 7A when the electrocardiogram is recorded.

Figure 8 shows a schematic view of the inside of the wrist of the human body.

9A is a plan view showing an inner surface and an outer surface of a wristwatch including the physiological electrode device of the present invention according to another embodiment of the present invention. Figure 8 shows a schematic view of the inside of the wrist of the human body.

Fig. 9B shows a state in which the user's left hand is wearing the wristwatch of Fig. 9A.

Figure 10-12 shows the state of use of the wristwatch of Figure 9A when recording the first, second, and third lead ECGs.

FIG. 13 is a side view showing a state in which a mobile phone including the physiological electrode device of the present invention does not capture and extract electrophysiological signals, respectively, according to an embodiment of the present invention.

Figure 14 shows a variation of the embodiment of Figure 13.

Fig. 15 is a view showing a state of use of a double wristband wearing device including the physiological electrode device of the present invention according to an embodiment of the present invention.

Embodiment 1:

Please refer to FIG. 4A, which shows a cross-sectional view of a physiological electrode device according to an embodiment of the present invention. The physiological electrode device comprises a conductive body 1 such as a copper alloy body, a silver layer 2 above the conductive body 1, a silver compound layer 2' above the silver layer 2, such as a silver chloride layer, located in the silver compound layer. a liquid adsorbing and releasing member 4 above the 2', a blocking member 3 covering the upper surface and a part of the side surface of the liquid adsorbing and releasing member 4, such as a blocking piece, and the blocking member 3 between the at least two positions A moving mechanism that reciprocates (not shown in Figure 4A, which will be described in detail later with reference to Figures 4B-4F). The conductive body 1 may be any metal alloy, compound, conductive polymer, or other material such as a carbon nanotube as long as it maintains good electrical conductivity. In one embodiment, the liquid adsorption and release element 4 is a compressible and pore-rich structure such as an artificial sponge or hydro-gel for absorbing an electrochemical solution such as an aqueous solution of potassium chloride ( After the Potassium chloride solution, the volume is slightly expanded, and the crucible contacts the upper surface of the silver compound layer 2' and is tightly fitted to the barrier member 3 so as not to fall off. It should be noted that the electrochemical solution and the silver compound layer 2' should have a common ion, and in this embodiment the common ion is a chloride ion. However, this common ion can also be other ions. In an embodiment, the blocking element 3 can be a curved sheet-like structure having an elastically flexible material such as plastic. Viewed in cross section, the outer edge of the blocking member 3 extends slightly inwardly to form a C-shape, so that the liquid adsorption and release member 4 does not fall off due to normal movement during operation, but can be worked Pull out (such as tweezers) for cleaning or replacement. Since the blocking member 3 is tightly fitted to the liquid adsorbing and releasing member 4, the liquid adsorbing and releasing member 4 is caused when the blocking member 3 moves over the silver layer 2 and the silver compound layer 2' (hereinafter referred to as the electrode for short). Simultaneously moving, an electrochemical solution such as an aqueous potassium chloride solution (for convenience of explanation, an aqueous solution of potassium chloride will be used hereinafter to represent an electrochemical solution) can be uniformly coated on the electrode. The blocking member 3 is slightly deformed when being pulled by the user, that is, the liquid adsorbing and releasing member 4 inside the blocking member 3 is pressed to extrude a small amount of an aqueous potassium chloride solution to the electrode surface. In order to adsorb more potassium chloride aqueous solution on the surface of the electrode, sandblasting may be used to roughen the surface of the electrode, or a tool may be used to scrape the groove on the surface of the electrode to accommodate more solution. On the other hand, some gel or starch may be added to the potassium chloride aqueous solution to increase the viscosity and allow more solution to stay on the electrode. In this way, once the electrode is in contact with the skin, the skin can be made moister and a better quality electrophysiological signal can be obtained.

Referring now to Figure 4B, there is shown a top plan view of a moving mechanism 6 and a blocking element 5 in accordance with an embodiment of the present invention. The mobile mechanism 6 can be a pivot. The blocking element 5 represents the position at which the element covers the electrode, i.e. the "original position" before the movement. The blocking element 5 can be pushed by a slight lateral force during use, causing the blocking element 5 to be pushed out of position and rotated 90 degrees about the pivot 6 as indicated by the arrow to reach position 7 to expose the electrode. Depending on the application, the blocking element 5 can be selectively coupled to a spring 11 to pull the blocking element 5 back into place to shield the electrode after the thrust has disappeared.

Referring now to Figure 4C, there is shown a top plan view of a moving mechanism 10-1 and 10-2 and a blocking member 8 in accordance with another embodiment of the present invention. The moving mechanisms 10-1 and 10-2 can be a set of slide rails. The blocking element 8 represents the position at which the element covers the electrode, i.e. the "original position" before the movement. When using a slight lateral force, the blocking element 8 can be pushed, so that the blocking element 8 is pushed away from the original position and is like an arrow. The head is shown translated along slide rails 10-1 and 10-2 to position 9 to expose the electrodes. Depending on the application, the blocking element 8 can be selectively coupled to a spring 12 to pull the blocking element 5 back into place to shield the electrode after the thrust has disappeared.

According to still another embodiment of the present invention, the two moving mechanisms of Figures 4B and 4C can be selectively matched with a fastener as shown in Figure 4F to become an embodiment of Figures 4D and 4E, allowing blocking The component quickly leaves the home to expose the electrode. Please refer to FIGS. 4D, 4E and 4F. FIG. 4F is a schematic view showing a fastener according to an embodiment of the present invention. The embodiment of Figures 4D and 4E is similar to the embodiment of Figures 4B and 4C, but the direction of force of the spring 11/12' in Figures 4D and 4E is opposite to that of Figures 4B and 4C. That is, when the blocking element 5/8 is in the home position, the spring 11/12' is compressed to store the spring potential energy and the blocking element 5/8 is engaged with the fastener 14/15 to be ejected; when the electrocardiogram is to be recorded, the user The fastener 14/15 is lightly pressed so that the bump 17 of the lock member (see Fig. 4F) is depressed and no longer engages with the opening of the blocking member 5/8, allowing the spring to release the spring force to quickly push the blocking member 5/ 8 exposes the electrode. After the ECG recording is completed, the user needs to push the blocking element 5/8 back from the position 7/9 with a little force, and the bump 17 of the buckle is pushed up by the cantilever 18 to engage with the opening of the blocking element 5/8. The blocking element 5/8 is fixed in place without being pushed out by the spring. The advantage of the spring quickly pushing the blocking element 5/8 is that the user can capture the electrocardiogram in the shortest possible time, which is beneficial for early heart disease (such as occasional arrhythmia). The function of the blocking element 5/8 is to prevent silver, chlorine, potassium ions and the like from being uncomfortable or harmful when exposed to the skin for a long time, and to avoid loss of the silver chloride by friction. Therefore, when the electrocardiogram is not normally taken, the blocking element is in the "in situ" to shield the electrode from contact with the skin, and only when the electrocardiogram is to be taken away from the "in situ", the electrode is exposed to expose the skin.

Referring now to Figure 5, there is shown the system architecture of the physiological electrode device of the above embodiment applied to a wearable or handheld electrocardiograph. LA is the electrode that touches the left hand, and RA is the one that touches the right hand. The electrodes and LL are electrodes that contact the left leg. The three electrodes are electrically connected to the positive and negative terminals of an instrumentation amplifier (InA) to eliminate common mode noise (mainly 60 Hz). The output of the instrumentation amplifier passes through a high-pass and low-pass filter (HP and LP filter) to filter out low-frequency noise (including electrochemical potential drift caused by temperature changes or ion diffusion, breathing or other Drift caused by muscle movement) and high-frequency noise (including EMG, 60Hz and radio waves), then amplified by an operational amplifier (Op.Amp), continued by an analog-to-digital converter (analog- The digital convertor (ADC) is converted into a digital signal, which is then processed by a microcontroller (MCU) and stored in a memory, or via a wired interface such as a universal serial bus (USB), WiFi or Bluetooth wireless interface. Transfer to other communication devices. The above circuit modules are all powered by a battery and can be powered on or off by a microcontroller. In addition, a micro-switch (u-switch) connected to the microcontroller can be added to have a different logic state when the blocking element is removed from the home position and returned to the reset position. With the micro switch, the microcontroller can turn off the above circuit modules when the blocking component is in the home position, and the microcontroller itself enters a sleep state; when the blocking component is turned off, the electrocardiogram circuit is turned on, thereby saving power consumption. , extend the operation time. The system architecture of the above described electrocardiograph recorder can be placed in a wearable device such as a wristwatch body (see 87 of Figure 7A) or placed in a mobile phone (see Figure 13).

The physiological electrode device described in this embodiment can be mounted on a wearable device (such as a wristwatch) or a handheld device (such as a mobile phone). When electrophysiological signal recording is not performed, the blocking element covers the electrode to avoid contact with the body while preventing evaporation of the electrochemical solution; when the user wants to perform physiological signal recording, the blocking element can be removed to expose the electrode to contact the body while squeezing Pressure blocking element The liquid adsorption and release element is extruded on the electrode by extruding the electrochemical solution to form a good electrical conductor, so that the physiological signal can be smoothly taken.

The above embodiments are suitable for extracting cardiac electrical signals to construct an electrocardiogram (ECG), and also for electromyography (EMG) and electroencephalography (EEG).

Embodiment 2:

For the electrode device on the inner side of the wristwatch, the blocking element of the electrode device shown in the first embodiment is too thick, and it is necessary to be placed on the inner side of the wristwatch and the blocking member is moved. The resistance is too large and uncomfortable, and it is difficult to implement. Reference is now made to Fig. 6, which shows a cross-sectional view of a physiological electrode device in accordance with another embodiment of the present invention. An electrode device which is preferably used for the inner side of the wristwatch is as shown in Fig. 6, and includes a silver-like layer and a silver compound layer 42 (hereinafter simply referred to as an electrode 42) as an electrode, and is accommodated in a liquid adsorption and release member 43 in the box-like electrode 42, a blocking member 41 overlying the electrode 42 and the liquid adsorption and release member 43, and a movement for reciprocating the blocking member 41 between at least two positions Mechanism (not shown in Figure 6, see previous description of Figures 4B-4F). In this embodiment, the conductive body is omitted, but it should be understood that the electrode device of the present embodiment may also include an outer surface of the conductive body covering electrode 42 or under the electrode 42. Similar to the blocking member 3 of the first embodiment, the upper edge of the electrode 42 extends inwardly to form a C-type gripping liquid adsorption and release member 43 for allowing the liquid adsorption and release member 43 to move together with the electrode 42 during operation without falling off. The liquid adsorption and release element 43 absorbs an electrochemical aqueous solution such as an aqueous potassium chloride solution (for convenience of explanation, an aqueous solution of potassium chloride will be used hereinafter to represent the electrochemical solution), and then slightly expands, so that when the blocking member 41 is removed, the liquid is absorbed. The release member 43 is raised above the uppermost surface of the electrode 42 and then squeezed by the skin to release a small amount of aqueous potassium chloride solution applied to the skin so that physiological signals can be conducted to the electrode 42. The blocking element 41 of this embodiment may also have a porous design. In this way, the blocking element 41 and the electrode are not normally measured. The 42 spaces are maintained at a distance to prevent the potassium chloride aqueous solution from contacting the skin, and when the electrode 42 is pressed at the measuring point during the measurement, the blocking member 41 can be moved downward and the aqueous potassium chloride solution can be squeezed out to contact the skin.

The electrode device described in this embodiment can be applied to a wearable device (for example, a wristwatch), which is described in detail below. Please refer to FIG. 7A, which shows an inner and outer plan view of a wristwatch including the physiological electrode device of the present invention according to an embodiment of the present invention. The wristwatch of FIG. 7A includes a wrist inner surface 81 for abutting against the skin, an outer surface 82 of the wristwatch opposite the inner surface 81, and a watch body 87 including an electrocardiograph green device as shown in FIG. The strap 88 fixed to the wrist of the user, the inner electrode device 83 at the inner surface, the outer electrode device 84 at the outer surface, and the two connecting wires 85 for connecting the inner electrode device 83 and the outer electrode device 84 With 86. The cross-sectional structure of the inner electrode device 83 can be as shown in Fig. 4 or Fig. 6.

Referring now to Figure 8, a schematic view of the inside of the wrist of a human body is shown. In Fig. 8, the wrist radial artery 51 and the wrist ulnar artery 52 are located on the inner side of the wrist between the palm and the forearm, because there is no thick muscle between the epidermis and the blood vessel, and only the ligament attached to the wrist end is attached. The structure is thinner than other parts, so that the place has lower resistance and is not easily interfered by muscle contraction and relaxation, which is the most favorable for conducting ECG signals. In addition, the inner side of the wrist is relatively flat, can accommodate a larger area of the electrode and is easier to stably contact the skin. Therefore, the preferred position of the inner electrode device 83 in Fig. 7A is the middle of the inner side of the wrist (at the radial artery to the ulnar artery) as shown in Fig. 8.

The outer surface of the band at the same position of the inner electrode device 83 is provided with an outer electrode device 84, and the cross-sectional structure thereof can be prepared as shown in FIG. 4 or FIG. 6, and the episode of the brachial artery 51 to the ulnar artery 52 of the other hand is prepared. contact. When the electrocardiogram is not recorded, the respective silver layer/silver compound layers (electrodes) of the electrode devices 83 and 84 are covered by the blocking member without contacting the skin. When the blocking element is disengaged, the skin contacts the electrode, so that the ECG signal is transmitted to the physiological electrical signal amplifying circuit, and then by the microcontroller and the firmware Analyze, form an electrocardiogram, and then use the watch's built-in wireless transmission device such as WiFi, Bluetooth, RFID, or infrared to transmit to other communication devices (such as mobile phones or personal computers) for display, storage, analysis and diagnosis. Referring now to Figure 7B, there is shown the state of use of the wristwatch when recording the electrocardiogram. As described above, when the electrocardiogram is to be recorded, the first lead (limb I) electrocardiogram can be obtained by touching the inner and outer electrodes of the wristwatch with both wrists.

The embodiment of the present invention can also be applied to the case where the first, second, and third lead electrocardiograms are to be simultaneously obtained. 9A and 9B, respectively, showing the inner and outer plan views of the wristwatch including the physiological electrode device of the present invention and the state in which the user wears the wristwatch of Fig. 9A in the left hand according to another embodiment of the present invention. The wristwatch of Fig. 9A includes an inner surface 54 of the wristwatch for abutting against the skin, an outer surface 55 of the wristwatch opposite to the inner surface 54, a watch body (only unlabeled), a drawstring (only unlabeled), and an inner face The inner electrode device 63 is located at the outer surface, the first outer electrode device 61 at the outer portion, and the second outer electrode device 62 at the outer portion. The cross-sectional structure of the inner electrode device 63 is as shown in Fig. 4 or Fig. 6, and its preferred position is located between the radial artery 51 and the ulnar artery 52. The cross-sectional structure of the first outer electrode device 61 and the second outer electrode device 62 is as shown in FIG. 4 or FIG. 6, and the preferred positions are respectively located at the radial artery 51 and the ulnar artery 52.

As shown in FIG. 9B, when the left palm is facing upward, the first outer electrode device 61 is located on one side of the closer left thumb, the second outer electrode device 62 is located on the other side of the near left thumb, and the inner electrode device 63 is Then, it is located between the first outer electrode device 61 and the second outer electrode device 62 (Fig. 9B is shown by a broken line to show that it is located on the inner surface and is covered by the band).

Referring now to Figures 10, 11 and 12, there are shown different states of use of the wristwatch of Figure 9A when recording the first, second, and third lead electrocardiograms. As shown in FIG. 10, when the first, second, and third lead electrocardiograms are to be recorded, the user can wear the wristwatch of FIG. 9A with the left hand and the second outer electrode device 62 of the wristwatch by the heart. Below the left abdomen, with the right hand leaning against the first outer electrode device 61 of the wristwatch, and the left hand slightly applying a lateral force to the left, the blocking element can be removed to allow the three physiological electrode devices to contact the left hand, the right hand, and the left abdomen respectively. , you can get the first, second and third lead ECG at the same time. If it is limited to the clothing and it is not convenient to touch the left abdomen, the user can touch the body under the left heart such as the left or left thigh with the wristwatch as shown in Fig. 11 or Fig. 12, and the first and second can be obtained at the same time. Three-lead ECG.

In the above embodiment, the physiological electrode device located outside has a cross-sectional structure of Fig. 4, and the physiological electrode device located at the inner surface preferably has the cross-sectional structure of Fig. 6. In order to guide the user to operate correctly, the watch body can be provided with several different colors of LED lights, buzzers, LCDs or voice generators to prompt the user when detecting R waves.

Compared with the prior art, the present embodiment has a silver layer/silver chloride layer/potassium chloride aqueous solution to assist the conduction, and the electrical resistance between the portion of the human body contacting the electrode device and the large blood vessel is low, so that the transition time of the electrocardiogram amplifying circuit Shorter (transient time less than 0.5 seconds), you can get an effective ECG in a short time, which is good for early heart disease. In addition, there is no muscle between the electrode device and the large blood vessel, and it is not interfered by the contraction and relaxation of the muscle, and an electrocardiogram of better quality can be obtained.

Embodiment 3:

To capture electrophysiological signals from handheld devices such as mobile phones, one must consider a limitation: the front of the phone is mostly a touch panel with an insulator on the surface for capacitive sensing. Referring now to Figure 13, A and B respectively show a side view of a state in which a mobile phone incorporating the physiological electrode device of the present invention does not capture and extract electrophysiological signals, in accordance with an embodiment of the present invention. In order to extract electrophysiological signals from the mobile phone, the two electrode devices described in the second embodiment are mounted on the back of the mobile phone. The mobile phone comprises a device body (illustrated as a large rectangle, not labeled), the arms 105 and 106, the hubs 103 and 104, the first electrode device 101 fixed on the back of the mobile phone, and the arm 105 coupled with the blocking element. A second electrode device 102 that functions as a piece. The arms 105 and 106 are interconnected by a hub 103 and connected to the fuselage by a hub 104. Since states A and B refer to the same elements, the partial labels are omitted in state A for the sake of illustration.

As shown in state A, when the electrophysiological signal is not captured, the second electrode device 102 is located on the back of the mobile phone to cover the first electrode device 101 at the back of the mobile phone. As shown in the state B, when the electrophysiological signal is to be extracted, the user flips the second electrode device 102 to the front of the mobile phone by the arms 105 and 106 and the pivots 103 and 104, so that both the front and the back of the mobile phone are provided. The electrode device allows the user to touch the two sides of the mobile phone with both wrists to obtain an electrophysiological signal. In order to fix the arm, a permanent magnet can be installed on the arm and the fuselage or a permanent magnet can be installed at one end and a magnetic material (such as a piece of iron) can be installed at the other end to make the arm have proper adhesion. The user needs to apply a pulling force to allow The arm is separated from the fuselage. In another aspect, a spring can be added at the hub to produce the same effect.

Similar to the advantages described in the second embodiment, the present embodiment can obtain an effective electrocardiogram in a shorter time than the prior art, and can reduce the signal interference of muscle contraction due to the attachment of the electrode device to avoid thick muscle tissue. In this way, the ECG with better quality is measured.

Embodiment 4:

Referring now to Figure 14, a variation of the embodiment of Figure 13 is shown. As shown in FIG. 14, a third electrode device 123 as in the first embodiment is added to the side of the handheld device such as the mobile phone of the third embodiment. As a result, the handheld device of FIG. 14 is provided with three electrode devices: a second electrode device 121 that is movable as in the third embodiment, and a first electrode device 122 that is disposed on the back side of the third embodiment. The third electrode device 123 on the side. The first, second, and third electrode devices are respectively electrically connected to the first, second, and third input ends of the electrocardiographic amplifying circuit in the body of the handheld device, and the Einthoven limbs I, II, and III can be recorded. Limb lead electrocardiogram (limb leads). When you want to record an electrocardiogram, The user touches the front and back sides of the handheld device with the inner side of the wrist to clamp the device, and then touches the left lower abdomen or the left leg skin with the side of the handheld device in the second embodiment to start capturing the electrocardiogram.

Compared with the prior art, the present example has a silver layer/silver compound/potassium chloride (electrode) to assist in electrical conduction, and the electrical resistance between the part contacting the electrode and the large blood vessel is low, so that the transition time of the electrocardiogram amplifying circuit is short. (Transient time less than 0.5 seconds), can obtain an effective ECG in a short period of time, which is not only beneficial to early heart disease patients, but also for patients with acute heart attack, they can quickly and clearly achieve their own or assisted by others. The ECG, the results obtained can be immediately transmitted to relatives or health care units, so that patients can be resettled and taken care of as soon as possible.

Embodiment 5:

Reference is now made to Fig. 15, which shows a state of use of a dual wristband wear device incorporating a physiological electrode device of the present invention in accordance with an embodiment of the present invention. The double wristband wearing device of Fig. 15 has a main wristband and a wristband, and the two wristbands respectively comprise the electrode device as described in the first embodiment. As shown in FIG. 15, the main wristband and the secondary wristband can be respectively worn on the left and right wrists or the right and left wrists of the user according to the user's preference, so that the user can easily and quickly obtain the electrocardiogram.

The main wristband includes a body, a strap, an electrode device, a conductive contact, and two connecting wires. The secondary wrist strap is simpler than the main wrist strap and contains only the strap, the conductive contacts, the electrode assembly and a connecting cable. The body contains an electrocardiogram amplification circuit, a microcontroller, a battery, a memory, and a control firmware. The body contains a heavy battery, for the sake of comfort and convenience, the preferred position is on the back of the hand (the average person is used to wearing the table position), and the wrist artery can be vacated to contact the ulnar artery for the electrode device.

The electrode devices of the main wristband and the secondary wristband are mounted on the inside of the band between the radial artery and the ulnar artery of the wrist. As shown in FIG. 4A of the first embodiment, the electrode device comprises a silver layer/silver compound layer, a barrier element, a liquid adsorption and release element, and a moving mechanism.

Connecting the electrode device to the first input end of the electrocardiogram amplifying circuit with a first connecting line in the main wristband, and connecting the conductive contact to the second input end of the electrocardiogram amplifying circuit with a second connecting line in the main wristband Connect the electrode assembly of the secondary wrist strap to the conductive contacts with a connecting wire in the secondary wrist strap.

When the ECG signal is to be recorded, the user moves the two arms to bring the conductive contacts of the two wrist straps into contact, and when the force is applied as described in the first embodiment, the blocking elements of the front wrist strap and the secondary wrist strap are removed. Exposing the electrode, the electrode can conduct the wrist ECG signal through the connecting wire and the conductive contact to the amplifier input end of the main body, thereby obtaining the limb lead I electrocardiogram.

As described in the second embodiment, in order to save power consumption, the main wristband can be equipped with a micro switch connected to the microcontroller, and the logic element state is different when the blocking component is disengaged from the return position. Alternatively, two non-conducting contacts respectively connected to the microcontroller are arranged beside the outer conductive contacts of the main wristband, and a conductor is mounted at the opposite position of the sub-wrist strap; when the main wristband is in contact with the secondary wristband The two contacts also touch the conductor and conduct, and the microcontroller can know whether the two main wristbands and the secondary wristband are connected. Similarly, the two contacts are changed to a reed switch, and the conductor is changed to a permanent magnet, and the same effect can be obtained.

Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and the present invention may be modified and retouched without departing from the spirit and scope of the present invention. The scope of protection is subject to the definition of the scope of the patent application.

1‧‧‧Electrical ontology

2‧‧‧ Silver layer

2'‧‧‧ Silver compound layer

3‧‧‧blocking elements

4‧‧‧Liquid adsorption and release components

Claims (18)

An electrode device for extracting an electrophysiological signal, comprising: a conductive body; a silver layer above the conductive body; a silver compound layer above the silver layer; and a liquid adsorption and release component located at the silver compound Above the layer; a blocking member covering the upper surface and a portion of the side surface of the liquid adsorption and release member; and a moving mechanism for reciprocating the blocking member between the at least two positions. An electrode device for extracting an electrophysiological signal according to claim 1, wherein the blocking member is coupled to a spring. An electrode device for extracting an electrophysiological signal according to the first aspect of the patent application, wherein the blocking member is used to engage with a fastener. An electrode device for extracting an electrophysiological signal according to the first aspect of the patent application, wherein the blocking element is for connecting to a micro switch. An electrode device for extracting an electrophysiological signal according to claim 1, wherein the blocking member is a curved sheet structure having an elastically flexible material. An electrode device for extracting an electrophysiological signal according to claim 1, wherein the blocking member has an inwardly extending edge to grip the liquid adsorption and release member. An electrode device for extracting an electrophysiological signal according to claim 1, wherein the silver layer and the silver compound layer have an inwardly extending edge to grip the liquid adsorption and release element. A wearable device for recording an electrocardiogram, comprising: An inner surface of a wearable device and a wearable device opposite to the inner surface of the wearable device; a body comprising an electrocardiogram amplification circuit, a microcontroller, a memory, a battery, and a control firmware; An electrode and a second electrode, wherein each of the first electrode and the second electrode comprises a silver layer and a silver compound layer, a blocking element, a liquid adsorption and release element, and a moving mechanism, The first electrode is located at the inner surface of the wearable device and is disposed between one of the radial artery and the one-foot artery of the wrist, the second electrode is located outside the wearable device, the first electrode and the first electrode Two electrode systems can be respectively connected to the two input ends of the electrocardiogram amplifying circuit. The wearable device of claim 8, further comprising a third electrode device located outside the wearable device, the third electrode device comprising a silver layer and a silver compound layer, a blocking component, and a liquid adsorption cum Release element, and a moving mechanism. The wearable device of claim 9, wherein the third electrode device is connected to a third input end of the electrocardiogram amplifying circuit. The wearable device of claim 9, wherein the wearable device is a wristwatch. The wearable device of claim 9, wherein the electrocardiogram is transmitted to another communication device by using one of the built-in wireless transmission devices for display, storage, analysis, and/or diagnosis. A handheld device for recording an electrocardiogram, comprising: a device body having a first surface and a second surface opposite to the first surface, the device body further comprising an electrocardiogram amplifying circuit, a microcontroller, and a wireless transmission a circuit, a memory, a battery, and a control firmware; a first electrode device and a second electrode device, the first electrode device being located on the first surface of the device body and comprising a silver layer and a silver compound layer and a liquid adsorption and release component, the second electrode device The first electrode device and the second electrode device are respectively electrically connected to the two input ends of the electrocardiogram amplifying circuit, wherein the handheld device is not recorded. In the state of the second electrode device, the second electrode device is configured to cover the first electrode device to prevent the first electrode device from being exposed. When the handheld device is to be recorded, the second electrode is used to be flipped to the The second side of the body exposes the first electrode device and the second electrode device for contact with a user. The hand-held device for recording an electrocardiogram according to claim 13 of the patent application, further comprising: a permanent magnet for abutting the second electrode device against the first electrode device. The hand-held device for recording an electrocardiogram according to claim 13 of the patent application, further comprising: a spring for abutting the second electrode device against the first electrode device. The hand-held device for recording an electrocardiogram according to claim 13 further includes: a third electrode device located on one side of the handheld device, the third electrode device comprising a silver layer and a silver compound layer, a blocking element, a liquid adsorption and release element, and a moving mechanism, the third electrode device being electrically connected to a third input end of the electrocardiographic amplifying circuit. A wrist worn device for recording an electrocardiogram, comprising: a main wristband comprising a body, a first strap, a first electrode device, a first conductive contact and two first connecting lines, the body comprising a Electrocardiogram amplification circuit, a microcontroller, a a battery, a memory and a control firmware, the first electrode device is located inside the first strap and is disposed between one of the radial artery and the one-foot artery of the wrist, the first electrode device includes a first a silver layer and a first silver compound layer, a first blocking element, a first liquid adsorption and release element, and a first moving mechanism, the first electrode device is one of the two first connecting lines Connecting to one of the first input terminals of the electrocardiogram amplifying circuit, the first conductive contact is connected to the second input end of the electrocardiographic amplifying circuit by the other of the two first connecting lines; and a pair The wrist strap includes a second strap, a second conductive contact, a second electrode device and a second connecting line, the second electrode device is located inside the second strap and is placed on the other wrist Between the radial artery and the one-foot artery, the second electrode device comprises a second silver layer and a second silver compound layer, a second blocking element, a second liquid adsorption and release element, and a second movement The second conductive contact is connected to the second connecting line Means coupled to the second electrode, wherein the primary and the secondary wristband to be worn in the wrist strap, respectively, two wrist of a user. The wrist-worn device for recording an electrocardiogram according to claim 17 , wherein the main wristband further comprises: a switch that presents different logic states when the main wristband and the secondary wristband are in contact with each other. The microcontroller.