Signal acquisition structure and patch detection device with same

Abstract

The utility model relates to the technical field of wearable electrode materials, in particular to a signal acquisition structure and a patch detection device with the same. The signal acquisition structure provided by the utility model comprises a flexible printed circuit and an adhesive layer, the flexible printed circuit comprises a base material layer and a circuit layer located on the base material layer; the circuit layer comprises a plurality of conductive traces and a plurality of electrode parts, and the adhesive layer covers part of the flexible printed circuit and does not cover the plurality of electrode parts. According to the signal acquisition structure provided by the utility model, the adhesive layer is arranged outside the flexible printed circuit, so that the skin attaching performance when the signal acquisition structure is used can be improved, the user experience can be improved, meanwhile, one surface of the flexible printed circuit can be always fixed at a specific position on a human body, the stability of signal transmission is enhanced, and the service life of the flexible printed circuit is prolonged. And the reliability of detection data is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wearable electrode materials, and in particular to a signal acquisition structure and a patch detection device having the same. Background Art

[0002] Currently, cardiovascular disease is a major health problem worldwide. It is the number one cause of death worldwide, with more people dying from cardiovascular disease each year than from any other cause of death. In 2019, an estimated 17.9 million people died from cardiovascular disease, accounting for 32% of the total global deaths, of which 85% were from heart attacks and strokes. In addition, cardiovascular disease has many complications and is prone to cause multiple additional complications such as vascular sclerosis, cerebral hemorrhage, and myocardial infarction.

[0003] Wearable devices play an increasingly important role in preventing cardiovascular disease. Although these devices themselves cannot directly prevent the occurrence of cardiovascular disease, they can help users and medical professionals better understand and manage cardiovascular health by monitoring and analyzing the user's physiological data. For example, real-time monitoring of heart rate through heart rate monitoring helps users understand their heart activity level. Abnormal heart rate may indicate potential health problems, so as to attract attention and seek medical help in time; monitoring atrial fibrillation and other arrhythmias through electrocardiogram (ECG) allows timely treatment and reduces the risk of serious complications.

[0004] Wearable devices mainly collect the user's physiological data and convert it into digital signals for subsequent analysis and processing. Existing portable wearable devices are in direct contact with human skin, which may cause discomfort to the human body. At the same time, skin sweat may enter the signal acquisition unit and damage the circuit layer, thus causing errors in the collected signals. In addition, when the human body is active, the wearable device may move, affecting the stability of the detection data. Therefore, it is necessary to optimize the existing signal acquisition structure. Utility Model Content

[0005] In order to optimize the signal acquisition of existing wearable devices, the present application proposes a signal acquisition structure.

[0006] The signal acquisition structure proposed in the present application includes a flexible printed circuit and an adhesive layer, wherein the flexible printed circuit includes a substrate layer and a circuit layer located on the substrate layer; the circuit layer includes a plurality of conductive traces and a plurality of electrode portions respectively connected to the plurality of conductive traces, the head ends of the plurality of conductive traces are arranged adjacent to each other to form the connection ends of the flexible printed circuit, and the tail ends of the plurality of conductive traces are respectively in contact and connected with the plurality of electrode portions; wherein the adhesive layer covers a portion of the flexible printed circuit and does not cover the plurality of electrode portions.

[0007] Specifically, in the above signal acquisition structure, the signal acquisition structure further includes an isolation layer, and the isolation layer is located between the flexible printed circuit and the adhesive layer.

[0008] Optionally, in the above signal acquisition structure, the material of the isolation layer includes ink.

[0009] Optionally, in the above-mentioned signal acquisition structure, the signal acquisition structure also includes a reinforcing plate, the reinforcing plate is fixedly connected to the connecting end of the flexible printed circuit at one end close to the connecting end, and the other end of the reinforcing plate is bent upward relative to the flexible printed circuit.

[0010] Optionally, in the above signal acquisition structure, the material of the conductive trace includes copper.

[0011] Optionally, in the above signal acquisition structure, the electrode portion includes a silver layer and a silver chloride layer covering the silver layer, and at least a portion of the silver layer is in contact with the conductive trace.

[0012] In addition, the present application also proposes a patch detection device, including the signal acquisition structure and a patch layer as described above, wherein the patch layer has a first surface facing the object to be detected, the first surface is sticky, and at least part of the flexible printed circuit of the signal acquisition structure is adhered to the first surface.

[0013] Optionally, in the above-mentioned patch detection device, the patch layer has an opening that passes through the patch layer; the flexible printed circuit has a planar portion and a bent portion, the planar portion is the portion that is in contact with the first surface, the bent portion is the portion that passes through the opening and is not in contact with the first surface, and the connection end is located at the end of the bent portion.

[0014] Optionally, in the above-mentioned patch detection device, the adhesive layer includes a first part and a second part, the first part is bonded to other areas of the planar part except the multiple electrode parts, the second part is bonded to the first surface, and the junction between the first part and the second part is located in the area where the opening is located.

[0015] Optionally, in the patch detection device, before the signal collection structure is assembled with the patch layer, the second portion of the adhesive layer is bonded to the bent portion of the flexible printed circuit.

[0016] One or more technical solutions provided by the utility model produce at least the following beneficial effects:

[0017] 1) The utility model proposes a signal acquisition structure, including a flexible printed circuit and an adhesive layer, wherein the flexible printed circuit includes a substrate layer and a circuit layer located on the substrate layer; the circuit layer includes a plurality of conductive traces and a plurality of electrode parts, and the adhesive layer covers a portion of the flexible printed circuit but does not cover the plurality of electrode parts. The signal acquisition structure proposed in the utility model can increase the skin-fitting property when using the signal acquisition structure and improve the user experience by providing an adhesive layer outside the flexible printed circuit, while keeping one side of the flexible printed circuit always fixed at a specific position on the human body, thereby enhancing the stability of signal transmission and improving the reliability of detection data;

[0018] 2) A signal acquisition structure proposed in the utility model includes an ink isolation layer, which is arranged between the flexible printed circuit and the adhesive layer. The isolation layer is arranged to further protect the copper wire layer of the substrate layer and prevent the sweat of the detection object from penetrating and corroding the copper wire layer;

[0019] 3) A patch detection device proposed by the utility model includes the signal collection structure and the patch layer as described above, wherein the patch layer includes a sticky surface, and the sticky surface adheres the detection device to the detection object to ensure that the signal collection data during detection is more accurate;

[0020] 4) The utility model proposes a patch detection device, wherein the patch layer has an opening that penetrates the patch layer; the flexible printed circuit has a bending portion, and the bending portion passes through the opening; the opening design of the patch layer can accommodate the bending portion of the printed circuit board to pass through it, so as to facilitate the subsequent connection and fixation of other electronic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Further details, features and advantages of the present application are disclosed in the following description of exemplary embodiments in conjunction with the accompanying drawings, in which:

[0022] Figure 1 One of the schematic diagrams of a signal acquisition structure provided in an embodiment of the present application;

[0023] Figure 2 A second schematic diagram of a signal acquisition structure provided in an embodiment of the present application;

[0024] Figure 3 A third schematic diagram of a signal acquisition structure provided in an embodiment of the present application;

[0025] Figure 4 A fourth schematic diagram of a signal acquisition structure provided in an embodiment of the present application;

[0026] Figure 5 A schematic diagram of a partial cross-sectional structure of a signal acquisition structure provided in an embodiment of the present application;

[0027] Figure 6 A bottom view of a patch detection device provided in an embodiment of the present application;

[0028] Figure 7 A top view of a patch detection device provided in an embodiment of the present application.

[0029] Description of reference numerals:

[0030] 1-flexible printed circuit, 11-substrate layer, 12-circuit layer, 121-conductive trace, 122-electrode portion, 1221-silver layer, 1222-silver chloride layer, 13-connecting end, 14-planar portion, 15-bending portion; 2-adhesive layer, 21-first portion, 22-second portion, 3-isolation layer, 4-reinforcement plate, 5-patch layer, 51-first surface, 52-opening. DETAILED DESCRIPTION

[0031] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.

[0032] It should be understood that the various steps described in the method implementation of the present application can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present application is not limited in this respect.

[0033] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions of other terms will be given in the description below. It should be noted that the concepts of "first", "second", etc. mentioned in this application are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0034] It should be noted that the modifications of "one" and "plurality" mentioned in the present application are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0035] The names of the messages or information exchanged between multiple devices in the embodiments of the present application are only used for illustrative purposes and are not used to limit the scope of these messages or information. Specific embodiment 1

[0037] The utility model relates to the technical field of wearable electrode materials, and in particular to a signal acquisition structure and a patch detection device having the same.

[0038] like Figure 1-Figure 4 A schematic diagram of a signal acquisition structure provided in an embodiment of the present application, Figure 5 A schematic diagram of a partial cross-sectional structure of a signal acquisition structure provided in an embodiment of the present application.

[0039] The signal acquisition structure proposed in the present application includes a flexible printed circuit 1 and an adhesive layer 2, wherein the flexible printed circuit 1 includes a substrate layer 11 and a circuit layer 12 located on the substrate layer 11; in this embodiment, the substrate layer material is an insulating material-polyimide film, on which a circuit layer is printed, which is used to replace the chassis of the electronic components of the traditional device and realize the mutual electrical connection between the electronic components. The circuit layer 12 includes a plurality of conductive traces 121 and a plurality of electrode parts 122 respectively connected to the plurality of conductive traces 121, such as the circuit layer 122 of the present application. Figure 1 As shown, this embodiment includes three conductive traces 121 and three electrode parts 122. The three conductive traces extend from the middle to both sides, and the tail ends of the three conductive traces do not intersect; the head ends of the three conductive traces intersect each other in the middle and become the connection ends 13 of the flexible printed circuit 11, and the tail ends of the three conductive traces are respectively in contact with and connected to the three electrode parts 122. In this embodiment, the adhesive layer 2 covers a part of the flexible printed circuit 11 and does not cover the three electrode parts 122. The adhesive layer is non-toxic, corrosion-resistant and has a certain adsorption force.

[0040] Through the signal acquisition structure of the present application, the printed circuit portion is covered with the above-mentioned adhesive layer, and the adhesive layer protects the circuit layer on the flexible printed circuit. When the signal acquisition structure is used to fit the detection object for detection, the skin-fitting property of the electrode structure is enhanced, which can improve the user experience of the detection object and reduce the discomfort caused by direct contact; the adhesive layer can also keep one side of the flexible printed circuit always fixed at a specific position on the human body, enhance the stability of signal transmission, improve user experience, and improve the reliability of detection data.

[0041] In some embodiments, the conductive traces of the present application intersect at the head end and do not intersect at the tail end, so that multiple printed circuits can be cut from a large printed circuit board, saving materials and costs.

[0042] In some embodiments, in the above signal acquisition structure, Figure 5 As shown, the signal acquisition structure further includes an isolation layer 3, the material of which includes ink, and the isolation layer 3 is disposed between the flexible printed circuit 1 and the adhesive layer 2. The isolation layer is disposed to further protect the conductive wires on the substrate layer of the flexible printed circuit, and to prevent the penetration of sweat from the body of the test subject to corrode the copper wire circuit layer. The isolation layer covers the flexible printed circuit, but does not cover the electrode portion.

[0043] In some replaceable embodiments, the substrate layer includes a PI substrate, a PET substrate or a PEN film, etc., and the material of the ink includes a solder resist ink, an anti-etching ink, etc., and the ink plays a role in protecting the circuit layer.

[0044] In some exemplary embodiments, the material of the conductive traces includes copper, and the signal input terminal is electrically connected to the signal output terminal through the copper conductive traces.

[0045] In some embodiments, in the signal acquisition structure, the signal acquisition structure further includes a reinforcing plate 4, wherein the reinforcing plate 4 is fixedly connected to the connecting end 13 of the flexible printed circuit 1 at one end close to the connecting end 13, and the other end of the reinforcing plate 4 is bent upward relative to the flexible printed circuit 1. The reinforcing plate is used to provide an insertion interface when the printed circuit is connected to other electronic components, so that the overall electrical connection of the flexible printed circuit is more stable.

[0046] In some embodiments, in the signal acquisition structure, the electrode portion 122 includes a silver layer 1221 and a silver chloride layer 1222 covering the silver layer, and at least a portion of the silver layer 1221 is in contact with the conductive trace 121, so that the electrocardiogram signal of the detected object is transmitted through the conductive trace. In some exemplary embodiments, a conductive gel is also provided on the silver chloride layer. The provision of the silver chloride layer can increase the effectiveness of signal conduction. In some alternative embodiments, the silver layer includes conductive silver paste, conductive carbon paste, graphene paste, nano silver wire paste or carbon nanotube paste.

[0047] In some exemplary embodiments, a tape layer is attached to the side of the flexible printed circuit facing the detection object, so that the printed circuit is fixed by the tape layer. Specific embodiment 2

[0049] like Figure 6-Figure 7 A bottom view and a top view of a patch detection device provided in an embodiment of the present application.

[0050] The present application also proposes a patch detection device, comprising the above-mentioned signal acquisition structure and a patch layer 5, wherein the patch layer 5 has a first surface 51 facing the object to be detected, the first surface 51 is sticky, and at least part of the flexible printed circuit 1 of the signal acquisition structure is attached to the first surface 51. The attachment of the flexible printed circuit to the patch layer is achieved through the sticky first surface, and when the detection device is used, it can be easily attached to the detection object to ensure the normal detection.

[0051] In some embodiments, in the patch detection device, the patch layer 5 has an opening 52 that passes through the patch layer 5; the flexible printed circuit 1 has a plane portion 14 and a bent portion 15, the plane portion 14 is the portion that is in contact with the first surface 51, the bent portion 15 is the portion that passes through the opening 52 and is not in contact with the first surface 51, and the connection end 13 is located at the end of the bent portion 15. The bent portion of the flexible printed circuit passes through the opening of the patch layer, electrically connecting the conductive traces on the plane of the flexible printed circuit with the electronic components located above the opening of the patch layer. At the same time, the changes in the spatial structure are reasonably used to adjust the shape of the printed circuit and the trend of the circuit layer to minimize the overall volume of the detection device.

[0052] In some embodiments, in the patch detection device, the adhesive layer 2 includes a first portion 21 and a second portion 22, the first portion 21 is bonded to other areas of the plane portion 14 except the plurality of electrode portions 122, the second portion 22 is bonded to the first surface 51, and the junction of the first portion 21 and the second portion 22 is located in the area where the opening 52 is located. The adhesive layer and the printed circuit portion are generally cut and formed together after printing and pressing. Since the flexible printed circuit 1 is divided into a plane portion 14 and a bending portion 15, the bending portion extends upward after passing through the opening of the patch layer, and the opening of the adhesive layer is sealed by the integrated adhesive layer of the first portion and the second portion, so as to prevent the sweat of the detection object from entering from the opening of the patch layer and causing adverse effects on the printed circuit and other electronic components connected to the bending portion.

[0053] In some embodiments, in the patch detection device, before the signal acquisition structure is assembled with the patch layer 5, the second portion 22 of the adhesive layer 2 is bonded to the bending portion 15 of the flexible printed circuit 1. During assembly, after the second portion 22 of the adhesive layer 2 is separated from the bending portion 15 of the flexible printed circuit 1, the second portion 22 of the adhesive layer 2 is bonded to the first surface 51 of the patch layer 5.

[0054] Through the patch detection device of the present application, the flexible circuit printed board and the patch layer are bonded together, an opening is set on the patch layer, the bent part of the flexible circuit board extends out from the opening, and the adhesive layer blocks the above opening from the side of the detection object to prevent the sweat of the detection object from entering the printed circuit through the opening and causing adverse effects on the circuit layer and electronic components.

[0055] The above descriptions are only some embodiments of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present application is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concepts. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other to form a technical solution.

[0056] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A signal acquisition structure, characterized in that: It comprises a flexible printed circuit and an adhesive layer, wherein the flexible printed circuit comprises a substrate layer and a circuit layer located on the substrate layer; The circuit layer includes a plurality of conductive traces and a plurality of electrode portions respectively connected to the plurality of conductive traces, the head ends of the plurality of conductive traces are arranged adjacent to each other to form the connection ends of the flexible printed circuit, and the tail ends of the plurality of conductive traces are respectively in contact with and connected to the plurality of electrode portions; Wherein, the adhesive layer covers a portion of the flexible printed circuit and does not cover the plurality of electrode portions.

2. The signal acquisition structure according to claim 1, characterized in that: The signal collection structure further includes an isolation layer, and the isolation layer is located between the flexible printed circuit and the adhesive layer.

3. The signal acquisition structure according to claim 2, characterized in that: The material of the isolation layer includes ink.

4. The signal acquisition structure according to claim 1, characterized in that: The signal acquisition structure further includes a reinforcing plate, wherein one end of the reinforcing plate close to the connecting end is fixedly connected to the connecting end of the flexible printed circuit, and the other end of the reinforcing plate is bent upward relative to the flexible printed circuit.

5. The signal acquisition structure according to claim 1, characterized in that: The material of the conductive trace includes copper.

6. The signal acquisition structure according to claim 1, characterized in that: The electrode portion includes a silver layer and a silver chloride layer covering the silver layer, and at least a portion of the silver layer is in contact with the conductive trace.

7. A patch detection device, characterized in that: It comprises a signal acquisition structure as described in any one of claims 1-6; and a patch layer, wherein the patch layer has a first surface facing the object to be detected, the first surface is sticky, and at least part of the flexible printed circuit of the signal acquisition structure is attached to the first surface.

8. The patch detection device according to claim 7, characterized in that: The patch layer has an opening that passes through the patch layer; the flexible printed circuit has a planar portion and a bent portion, the planar portion is the portion that is in contact with the first surface, the bent portion is the portion that passes through the opening and is not in contact with the first surface, and the connection end is located at the end of the bent portion.

9. The patch detection device according to claim 8, characterized in that: The adhesive layer includes a first part and a second part, the first part is bonded to other areas of the planar part except the multiple electrode parts, the second part is attached to the first surface, and the junction of the first part and the second part is located in the area where the opening is located.

10. The patch detection device according to claim 9, characterized in that: Before the signal collection structure is assembled with the patch layer, the second portion of the adhesive layer is bonded to the bent portion of the flexible printed circuit.

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