Electrocardio dry electrode applied to wearable equipment
By using a riveting process to firmly fix the electrode pads to the conductive layer, the problem of poor contact caused by loose electrode pads in wearable devices is solved, thereby improving the quality of ECG signals and extending the service life of the device.
Patent Information
- Application Number
- CN202422617644.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-10-29
AI Technical Summary
Existing wearable ECG dry electrodes are prone to loosening of the electrode diaphragm and electrical connection components after long-term use or washing, resulting in poor contact and affecting the quality of ECG signal acquisition.
The electrode sheet and the conductive layer are fixed by riveting with rivets. Flexible gaskets and conductive cloth are used to wrap the wires to ensure a tight fit between the electrode sheet and the conductive layer. Metal rivets and silicone gaskets are used to increase the connection stability.
This effectively prevents the electrodes from loosening from the conductive layer, improves the quality of ECG signal acquisition, and extends the service life of the equipment.
Smart Images
Figure CN223489729U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wearable devices, and in particular to an electrocardiogram dry electrode for use in wearable devices. Background Technology
[0002] In today's society, people are increasingly concerned about health. In the medical and health field, there is a need for daily monitoring of bodily signals. Since heart diseases often cause significant problems for people's health and well-being, and can even lead to death or disability, especially for middle-aged and elderly people, the sudden symptoms caused by heart diseases cannot be ignored. Currently, screening for heart diseases mainly involves detection through electrocardiograms (ECG) and photoplethysmography (PPG), usually performed in hospitals using specialized equipment such as ECG machines or Holter monitors. While ECG, as a non-invasive diagnostic tool, is of great significance in the diagnosis of heart diseases, a routine single ECG may not easily detect arrhythmias and myocardial ischemia. Holter monitoring can continuously monitor the entire process of cardiac electrical activity, recording ECG data under different conditions including rest, activity, eating, working, studying, and sleeping, providing early warnings for sudden cardiac events in scenarios such as at home and outdoors. Although the results from such devices are accurate, they cannot achieve real-time monitoring anytime, anywhere. Real-time electrocardiogram data can be used as an objective basis for clinical analysis of the condition, diagnosis and treatment. However, dynamic electrocardiogram usually uses wet electrodes attached to the body surface, and long-term wear can easily cause discomfort and allergies in the wearer.
[0003] With the development of electronic products and the Internet, medical devices are moving towards intelligence and seamless operation. Currently, there are many wearable devices on the market for long-term real-time monitoring of patients' electrocardiogram (ECG) status. These wearable devices are mostly ECG patches, ECG vests, and ECG watches. Among them, ECG patches and ECG vests are designed with patient comfort in mind and usually use dry electrodes for monitoring. Due to their structural characteristics, dry electrodes can be worn for a long time and are relatively comfortable. However, in the current dry electrode manufacturing process, the electrode diaphragm and electrical connection components (such as FPC and electrode wires) are connected by adhesive bonding. This connection method is not reliable, and the connection between the two is prone to loosening. Especially after washing, the two may not adhere tightly, resulting in poor contact and further affecting the acquisition of ECG signals. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a dry electrode for ECG in wearable devices, so as to solve the technical problem of poor contact inside the dry electrode leading to poor ECG signal quality in the prior art.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0006] An electrocardiogram dry electrode for use in wearable devices, comprising:
[0007] An electrode pad, wherein a first portion of the front side of the electrode pad is exposed on the inner surface of the wearable device so as to be in contact with human skin, and a second portion of the front side of the electrode pad is attached to a conductive layer, and the second portion of the electrode pad and the conductive layer are fixed together by rivets.
[0008] The conductive layer is electrically connected to the circuit portion of the wearable device to enable the acquisition of the human body's electrocardiogram.
[0009] A first washer is provided between the rivet head at one end of the rivet and the conductive layer, and a second washer is provided between the rivet head at the other end of the rivet and the second part of the electrode sheet. The planar area of the washer is larger than the maximum outer diameter area of the rivet head.
[0010] Furthermore, the electrode sheet is a silver paste electrode, which includes, from the back side to the front side, a silver paste layer, a carbon film protective layer, and a hot melt adhesive film layer.
[0011] Furthermore, the first gasket and the second gasket are flexible gaskets, specifically silicone gaskets.
[0012] Furthermore, the conductive layer is an FPC, and the FPC portion extends into the interior of the wearable device and is electrically connected to the circuitry within the wearable device.
[0013] Furthermore, the conductive layer includes a first conductive cloth, a second conductive cloth, and a wire. The first and second conductive cloths are located on the upper and lower sides of the wire and wrap and clamp the wire. The planar area of the conductive cloth is larger than the area of the pad and the electrode sheet. The wire extends into the interior of the wearable device and is electrically connected to the circuit part inside the wearable device.
[0014] Furthermore, the foam is fixed to the back of the electrode sheet at a position corresponding to the first part, so that the first part of the front of the electrode sheet protrudes from the inner surface of the wearable device for better contact with the body surface.
[0015] Furthermore, the rivet is a metal rivet.
[0016] As mentioned above, the ECG dry electrodes and the conductive layer are fixed to the wearable device by riveting, which can effectively avoid the problem of poor contact between the two after long-term use, resulting in poor signal quality. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the internal structure of the ECG dry electrode of this utility model assembled in a wearable device;
[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0020] Explanation of reference numerals in the attached drawings: 100, first part of electrode sheet; 101, second part of electrode sheet; 2, foam; 3, rivet; 4, first gasket; 200, conductive layer; 201, first conductive cloth; 202, wire; 203, second conductive cloth; 5, second gasket; 6, covering fabric. Detailed Implementation
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as “length,” “width,” “upper,” “lower,” “left,” “right,” “front,” “rear,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are merely for ease of description and should not be construed as limiting the invention.
[0022] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion; the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. "A plurality of" means two or more, unless otherwise explicitly specified.
[0023] In the description, claims, and accompanying drawings of this utility model, when an element is referred to as "fixed to," "mounted to," "set on," or "connected to" another element, it can be directly or indirectly located on that other element. For example, when an element is referred to as "connected to" another element, it can be directly or indirectly connected to that other element.
[0024] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Example
[0025] In today's society, people are increasingly concerned about health. In the medical and health field, there is a need for daily monitoring of bodily signals. Since heart diseases often cause significant problems for people's health and well-being, and can even lead to death or disability, especially for middle-aged and elderly people, the sudden symptoms caused by heart diseases cannot be ignored. Currently, screening for heart diseases mainly involves detection through electrocardiograms (ECG) and photoplethysmography (PPG), usually performed in hospitals using specialized equipment such as ECG machines or Holter monitors. While ECG, as a non-invasive diagnostic tool, is of great significance in the diagnosis of heart diseases, a routine single ECG may not easily detect arrhythmias and myocardial ischemia. Holter monitoring can continuously monitor the entire process of cardiac electrical activity, recording ECG data under different conditions including rest, activity, eating, working, studying, and sleeping, providing early warnings for sudden cardiac events in scenarios such as at home and outdoors. Although the results from such devices are accurate, they cannot achieve real-time monitoring anytime, anywhere. Real-time electrocardiogram data can be used as an objective basis for clinical analysis of the condition, diagnosis and treatment. However, dynamic electrocardiogram usually uses wet electrodes attached to the body surface, and long-term wear can easily cause discomfort and allergies in the wearer.
[0026] With the development of electronic products and the Internet, medical devices are moving towards intelligence and seamless operation. Currently, there are many wearable devices on the market for long-term real-time monitoring of patients' electrocardiogram (ECG) status. These wearable devices are mostly ECG patches, ECG vests, and ECG watches. Among them, ECG patches and ECG vests are designed with patient comfort in mind and usually use dry electrodes for monitoring. Due to their structural characteristics, dry electrodes can be worn for a long time and are relatively comfortable. However, in the current dry electrode manufacturing process, the electrode diaphragm and electrical connection components (such as FPC and electrode wires) are connected by adhesive bonding. This connection method is not reliable, and the connection between the two is prone to loosening. Especially after washing, the two may not adhere tightly, resulting in poor contact and further affecting the acquisition of ECG signals.
[0027] Acquiring ECG signals from the body surface requires the electrodes to form a circuit with the wearable device's circuitry. This necessitates that the FPC or electrode wires and other electrical connection materials be fully bonded to the electrode pads themselves. Currently, the common method used for ECG dry electrodes in wearable devices is adhesive bonding. This involves filling the space between the inner and outer covering fabrics of the wearable device with the ECG electrode pads and electrical connection materials, and then using adhesive to bond the inner and outer covering fabrics together. While this method can form the circuit required for ECG signal acquisition, with increased usage time, especially after washing, the ECG electrode pads and electrical connection materials often become misaligned or loosely bonded. Furthermore, the reduced adhesive strength between the covering fabrics after washing further exacerbates the misalignment. The degree of bonding directly affects the signal quality of the acquired ECG signal. Therefore, the effectiveness and lifespan of this type of dry ECG electrode application in wearable devices are extremely limited.
[0028] This embodiment provides a dry electrocardiogram electrode for wearable devices, such as... Figure 1 and Figure 2 As shown, it includes:
[0029] Electrode pad, wherein the first part of the front of the electrode pad is exposed on the inner surface of the wearable device so as to be in contact with human skin. The wearable device here is generally a flexible wearable device with a high degree of fit to the human body, such as an ECG vest or heart rate belt. The second part of the front of the electrode pad is attached to the conductive layer 200. The second part 101 of the electrode pad and the conductive layer 200 are fixed together by rivets 3.
[0030] The conductive layer 200 is electrically connected to the circuit part of the wearable device to realize the collection of human electrocardiogram. Compared with the original bonding process, the conductive layer 200 and the electrode sheet are pressed together by rivets, which can make the two fit tightly, and even if they are used for a long time or washed, the tightness of the fit will not be affected.
[0031] A first washer 4 is provided between one end of the rivet 3 and the conductive layer 200, and a second washer 5 is provided between the other end of the rivet 3 and the second part 101 of the electrode sheet. The planar area of the washer 5 is larger than the maximum outer diameter area of the rivet head. The purpose of providing the washer is to make the electrode sheet and the conductive layer adhere more smoothly. Since the rivet head and the connecting parts within the riveting stroke are not necessarily parallel during the riveting process, in this embodiment, the direct contact between the rivet head and the conductive layer, and between the rivet head and the electrode sheet is... The contact surfaces are not necessarily perfectly parallel and fitted, which may result in the electrode sheet, conductive layer 200 and the rivet heads at both ends not being tightly pressed together after riveting, thus affecting the degree of adhesion between the electrode sheet and the conductive layer 200. In this embodiment, a gasket is added. The pressure of the riveting process is applied to the gasket, and then to the electrode sheet and conductive layer 200. Furthermore, the planar area of the gasket is larger than the maximum outer diameter area of the rivet head, making the fit between the gasket and the electrode sheet and conductive layer 200 smoother, so as to prevent misalignment or poor contact.
[0032] Furthermore, the electrode sheet is a silver paste electrode, which includes, from the back side to the front side, a silver paste layer, a carbon film protective layer, and a hot melt adhesive film layer.
[0033] Preferably, the first gasket 201 and the second gasket 203 are flexible gaskets. In this embodiment, they are specifically silicone gaskets. The silicone gaskets have pre-compression and elasticity, which can make the conductive layer 200 and the electrode sheet fit more tightly during the riveting process. Compared with rigid gaskets, they are less prone to damage.
[0034] As one alternative embodiment, the conductive layer 200 is an FPC, and the FPC portion extends into the interior of the wearable device and is electrically connected to the circuit portion within the wearable device.
[0035] As one optional embodiment, when the electrical connector is wire 202, such as Figure 2 As shown, the conductive layer includes a first conductive cloth 201, a second conductive cloth 203, and a wire 202. The first conductive cloth 201 and the second conductive cloth 203 are located on the upper and lower sides of the wire 202 and wrap and clamp the wire 202. The planar area of the conductive cloth is larger than the area of the metal pad and the electrode pad. The wire extends into the interior of the wearable device and is electrically connected to the circuit part inside the wearable device. The conductive cloth is set on the upper and lower sides of the wire to wrap the wire, so as to prevent the wire from rubbing against the electrode pad and wearing down the material of the electrode pad surface when the wearable device is worn for a long time. The conductive cloth is conductive on both sides to realize the conduction of the ECG acquisition circuit.
[0036] As one of the preferred embodiments, such as Figure 1As shown, foam 2 is fixed to the back of the electrode sheet at a position corresponding to the first part, so that the first part of the front of the electrode sheet protrudes from the inner surface of the wearable device for better contact with the body surface.
[0037] In a preferred embodiment, to ensure riveting strength and electrode life, the rivet 3 is a metal rivet.
[0038] The ECG dry electrode for wearable devices provided in this embodiment, compared with the traditional bonding process, uses a riveting process to ensure the adhesion strength and flatness of the electrode sheet and the conductive layer, which can effectively extend the service life of the electrode and improve the signal quality of the acquired ECG signal.
[0039] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.
Claims
1. A dry electrocardiogram electrode for use in wearable devices, comprising: An electrode pad, wherein a first portion of the front side of the electrode pad is exposed on the inner surface of the wearable device so as to be in contact with human skin, and a second portion of the front side of the electrode pad is attached to a conductive layer, and the second portion of the electrode pad and the conductive layer are fixed together by rivets. The conductive layer is electrically connected to the circuit portion of the wearable device to enable the acquisition of the human body's electrocardiogram. A first washer is provided between the rivet head at one end of the rivet and the conductive layer, and a second washer is provided between the rivet head at the other end of the rivet and the second part of the electrode sheet. The planar area of the washer is larger than the maximum outer diameter area of the rivet head.
2. The ECG dry electrode for wearable devices according to claim 1, characterized in that: The electrode sheet is a silver paste electrode, which includes, from the back to the front, a silver paste layer, a carbon film protective layer, and a hot melt adhesive film layer.
3. The ECG dry electrode for wearable devices according to claim 1, characterized in that: The first gasket and the second gasket are flexible gaskets, specifically silicone gaskets.
4. The ECG dry electrode for wearable devices according to claim 1, characterized in that: The conductive layer is an FPC, and the FPC portion extends into the interior of the wearable device and is electrically connected to the circuitry within the wearable device.
5. The ECG dry electrode for wearable devices according to claim 1, characterized in that: The conductive layer includes a first conductive cloth, a second conductive cloth, and a wire. The first and second conductive cloths are located on the upper and lower sides of the wire and wrap and clamp the wire. The planar area of the conductive cloth is larger than the area of the pad and the electrode sheet. The wire extends into the interior of the wearable device and is electrically connected to the circuit part inside the wearable device.
6. The ECG dry electrode for wearable devices according to claim 1, characterized in that: The foam is fixed to the back of the electrode sheet at a position corresponding to the first part, so that the first part of the front of the electrode sheet protrudes from the inner surface of the wearable device for better contact with the body surface.
7. The ECG dry electrode for wearable devices according to claim 1, characterized in that: The rivet is a metal rivet.