Conductive electrode and electrocardiogram detection device

Abstract

The utility model discloses a conductive electrode and an electrocardio detection device, which are characterized in that a circuit layer comprises a conductive structure part and a non-conductive structure part, a sampling electrode is arranged on the non-conductive structure part, a switching circuit layer is arranged, and a part of the switching circuit layer is positioned between the sampling electrode and the non-conductive structure part; the switching circuit layer is in contact with the sampling electrode and extends to the conductive structure part from one side of the non-conductive structure part to be electrically connected with the first conductive circuit, so that the switching circuit layer can play a switching role between the sampling electrode and the first conductive circuit, and the sampling electrode is not in contact with the first conductive circuit in the circuit layer; in addition, the sampled human body electric signals can still be transmitted to the first conducting circuit through the switching circuit layer, the sampling electrode can be prevented from making contact with the first conducting circuit, and then the reliability and accuracy of electrocardiosignal collection by the conducting electrode are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a conductive electrode and an electrocardiogram detection device. Background Art

[0002] As people pay more attention to their health conditions, the application of electrocardiogram detection devices is becoming more and more widespread.

[0003] The conductive electrode of the electrocardiogram detection device includes at least one sampling point and a conductive circuit integrated on a printed circuit board. A conductive gel is arranged at the sampling point, and the conductive gel contacts the human body to collect electrocardiogram signals and transmit them to the conductive circuit in the printed circuit board.

[0004] However, the conductive gel covers a large area on the printed circuit board. When there is copper leakage on the printed circuit board, the contact between the conductive gel and the copper leakage on the printed circuit board will affect the collection of ECG signals and reduce the reliability and accuracy of ECG collection. Utility Model Content

[0005] The utility model provides a conductive electrode and an electrocardiogram detection device to improve the reliability and accuracy of the conductive electrode in collecting electrocardiogram signals.

[0006] According to one aspect of the utility model, a conductive electrode is provided, comprising: a circuit layer, at least one sampling electrode and a switching circuit layer; the circuit layer comprises a conductive structure portion and a non-conductive structure portion, the conductive structure portion is connected to the non-conductive structure portion, and the conductive structure portion comprises a first conductive circuit; the sampling electrode is arranged on one side of the non-conductive structure portion; part of the switching circuit layer is located between the sampling electrode and the non-conductive structure portion, the switching circuit layer contacts the sampling electrode, and extends to the conductive structure portion on one side of the non-conductive structure portion to be electrically connected to the first conductive circuit.

[0007] Optionally, the conductive electrode includes at least two sampling electrodes, the switching circuit layer includes at least two switching circuits, and the switching circuits are electrically connected to the sampling electrodes in a one-to-one correspondence.

[0008] Optionally, the switching circuit includes an electrode contact portion and a second conductive circuit, the non-conductive structure portion includes a first area and a second area, the electrode contact portion is located in the first area, and the second conductive circuit is located in the second area;

[0009] The electrode contact portion is located between the sampling electrode and the non-conductive structure portion, the first end of the second conductive line is electrically connected to the electrode contact portion, and the second end of the second conductive line extends to the conductive structure portion and is electrically connected to the first conductive line.

[0010] Optionally, the electrode contact portions have the same shape, and the electrode contact portions have the same size along the same direction.

[0011] Optionally, the orthographic projection of the electrode contact portion on the circuit layer is within the first region.

[0012] Optionally, the shape of the electrode contact portion is the same as the shape of the second region, and / or the shape of the second conductive line is the same as the shape of the first region.

[0013] Optionally, the sampling electrode covers the surface of the electrode contact portion away from the circuit layer and at least part of the side surface of the electrode contact portion, and the side surface of the electrode contact portion intersects with the surface of the electrode contact portion away from the circuit layer.

[0014] Optionally, the circuit layer includes a printed circuit board, the printed circuit board includes at least one conductive layer and at least one insulating layer stacked together; the conductive structure includes a conductive layer and an insulating layer, the conductive layer includes a first conductive circuit; and the non-conductive structure includes an insulating layer.

[0015] Optionally, the material of the sampling electrode is conductive gel, the material of the first conductive circuit is copper, and the material of the switching circuit layer is silver or silver paste containing silver chloride.

[0016] According to another aspect of the present invention, there is provided an electrocardiogram detection device, comprising the conductive electrode described in any embodiment of the present invention.

[0017] The technical solution of the embodiment of the utility model is to set a circuit layer including a conductive structure part and a non-conductive structure part, set the sampling electrode in the non-conductive structure part, and set a switching circuit layer, wherein part of the switching circuit layer is located between the sampling electrode and the non-conductive structure part, the switching circuit layer contacts the sampling electrode, and extends to the conductive structure part on one side of the non-conductive structure part to be electrically connected to the first conductive circuit, so that the switching circuit layer can play a switching role between the sampling electrode and the first conductive circuit, thereby making it possible to transmit the sampled human body electrical signal to the first conductive circuit through the switching circuit layer without the sampling electrode contacting the first conductive circuit in the circuit layer, thereby avoiding the contact between the sampling electrode and the first conductive circuit, thereby improving the reliability and accuracy of the conductive electrode in collecting electrocardiogram signals.

[0018] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a top view of a conductive electrode provided by an embodiment of the utility model;

[0021] Figure 2 is a cross-sectional view of a conductive electrode provided by an embodiment of the utility model;

[0022] Figure 3 is a cross-sectional view of another conductive electrode provided by an embodiment of the utility model;

[0023] Figure 4 It is a cross-sectional view of another conductive electrode provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the term "comprising" and any of its variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] As described in the background technology, the contact between the conductive gel and the copper leakage of the printed circuit board will affect the acquisition of ECG signals and reduce the reliability and accuracy of ECG signal acquisition. Research has found that the reason for the above problems is that, on the one hand, the conductive gel is corrosive to copper. In the case of copper leakage of the printed circuit board, the corrosion of the conductive gel on the copper leakage of the printed circuit board will cause the conductive circuit in the printed circuit board to be destroyed, affecting the reliability and accuracy of ECG signal acquisition; on the other hand, when the role of the copper leakage of the printed circuit board is to transmit electrical signals other than the ECG signal sampled by the sampling electrode, the contact between the sampling electrode and the copper leakage will cause the sampling electrode to short-circuit with the conductive structure that transmits other electrical signals, affecting the reliability and accuracy of ECG signal acquisition.

[0027] Based on the above reasons, the embodiment of the utility model provides a conductive electrode. Figure 1 is a top view of a conductive electrode provided by an embodiment of the utility model, Figure 2 is a cross-sectional view of a conductive electrode provided by an embodiment of the utility model, Figure 3 is a cross-sectional view of another conductive electrode provided by an embodiment of the utility model, Figure 4 is a cross-sectional view of another conductive electrode provided by an embodiment of the utility model, wherein: Figure 2 Can correspond Figure 1 Cut along AA' to get: Figure 3 Can correspond Figure 1 Cut along BB' to get, Figure 4 Can correspond Figure 1 Cut along CC', the conductive electrode can be used in an ECG detection device to detect ECG signals at different positions in the human body. Figure 1-Figure 4 The conductive electrode comprises: a circuit layer 100, at least one sampling electrode 200 and a switching circuit layer 300; the circuit layer 100 comprises a conductive structure portion 110 and a non-conductive structure portion 120, the conductive structure portion 110 is connected to the non-conductive structure portion 120, and the conductive structure portion 110 comprises a first conductive circuit 111; the sampling electrode 200 is arranged on one side of the non-conductive structure portion 120; a portion of the switching circuit layer 300 is located between the sampling electrode 200 and the non-conductive structure portion 120, the switching circuit layer 300 contacts the sampling electrode 200, and extends on one side of the non-conductive structure portion 120 to the conductive structure portion 110 and is electrically connected to the first conductive circuit 111.

[0028] Among them, the circuit layer 100 can be a printed circuit board. Exemplarily, the printed circuit board can be a flexible printed circuit board, so that the flexibility of the conductive electrode is better. When the conductive electrode is applied to a wearable electrocardiograph detection device, the wearing comfort can be improved. The circuit layer 100 includes a conductive structure portion 110 and a non-conductive structure portion 120, wherein the conductive structure portion 110 includes a first conductive circuit 111, and the first conductive circuit 111 is conductive and can transmit and / or process electrical signals; the non-conductive structure portion 120 does not include a conductive structure, that is, the structures included in the non-conductive structure portion 120 are all insulating structures, and the material of the insulating structure is an insulating material. Exemplarily, the circuit layer 100 is a printed circuit board, and copper is laid in the conductive structure portion 110 to form the first conductive circuit 111, and copper is not laid in the non-conductive structure portion 120. It should be noted that Figure 1 Only part of the first conductive circuit 111 is schematically output, and other first conductive circuits may be inside the circuit layer. Figure 1 The following is shown in the figure.

[0029] The sampling electrode 200 can contact the human body to collect human body electrical signals, and the human body electrical signals can be electrocardiogram signals. The number of the sampling electrodes 200 can be one or at least two, and the embodiment of the utility model does not make any specific limitation here. Figure 1 The case where the conductive electrode includes three sampling electrodes 200 is exemplarily shown in FIG. The material of the sampling electrode 200 may be a conductive gel. The sampling electrode 200 is disposed on one side of the non-conductive structure portion 120 of the circuit layer 100. Since the non-conductive structure portion 120 does not have a conductive structure, the sampling electrode 200 will not contact the conductive structure of the circuit layer 100 (i.e., the first conductive line 111). Exemplarily, when the circuit layer 100 is a printed circuit board, the sampling electrode 200 will not contact the leaking copper of the printed circuit board, which can avoid the problem of reduced reliability and accuracy of human body electrical signal collection caused by the contact between the sampling electrode 200 and the printed circuit board and the leaking copper in the prior art.

[0030] In order to transmit the human body electrical signal sampled by the sampling electrode 200 to the first conductive circuit 111, in this embodiment, the conductive electrode is further provided with a switching circuit layer 300, which does not belong to the circuit layer 100. Part of the switching circuit layer 300 is arranged between the sampling electrode 200 and the non-conductive structure part 120. The switching circuit layer 300 contacts the sampling electrode 200 and extends to the conductive structure part 110 on one side of the non-conductive structure part 120, and is electrically connected to the first conductive circuit 111 of the conductive structure part 110. Therefore, the switching circuit layer 300 can play the role of switching the sampling electrode 200 and the first conductive circuit 111 in the circuit layer 100, thereby transmitting the human body electrical signal sampled by the sampling electrode 200 to the first conductive circuit 111. In the technical solution of this embodiment, when the sampling electrode 200 is arranged on one side of the non-conductive structure part 120 of the circuit layer 100, the human body electrical signal sampled by the sampling electrode 200 can also be transmitted to the first conductive circuit 111 of the conductive structure part 110 through the switching circuit layer 300.

[0031] The conductive electrode of this embodiment is provided with a circuit layer including a conductive structure part and a non-conductive structure part, and the sampling electrode is provided in the non-conductive structure part. A switching circuit layer is provided, and part of the switching circuit layer is located between the sampling electrode and the non-conductive structure part. The switching circuit layer contacts the sampling electrode and extends to the conductive structure part on one side of the non-conductive structure part to be electrically connected to the first conductive circuit, so that the switching circuit layer can play a switching role between the sampling electrode and the first conductive circuit, thereby making it possible to transmit the sampled human body electrical signal to the first conductive circuit through the switching circuit layer without the sampling electrode contacting the first conductive circuit in the circuit layer, thereby avoiding the contact between the sampling electrode and the first conductive circuit, thereby improving the reliability and accuracy of the conductive electrode in collecting electrocardiogram signals.

[0032] Continue to refer Figure 1-Figure 4 On the basis of the above technical solution, optionally, the conductive electrode includes at least two sampling electrodes 200, and the switching circuit layer 300 includes at least two switching circuits 310, and the switching circuits 310 are electrically connected to the sampling electrodes 200 in a one-to-one correspondence.

[0033] Specifically, the first end of the transfer circuit 310 may be in contact with the corresponding sampling electrode 200, and the second end of the transfer circuit 310 may be electrically connected to the first conductive circuit 111. Optionally, the transfer circuit 310 includes a connection pad 313, and the first conductive circuit 111 may also include a surface conductive structure exposed on the circuit layer 100, such as a gold finger, and the transfer circuit layer 300 may be connected to the first conductive circuit 111 through the connection pad 313.

[0034] Continue to refer Figure 1 and- Figure 4Optionally, the switching circuit 310 includes an electrode contact portion 311 and a second conductive circuit 312, the non-conductive structure portion 120 includes a first area 121 and a second area 122, the electrode contact portion 311 is located in the first area 121, and the second conductive circuit 312 is located in the second area 122; the electrode contact portion 311 is located between the sampling electrode 200 and the non-conductive structure portion 120, the first end of the second conductive circuit 312 is electrically connected to the electrode contact portion 311, and the second end of the second conductive circuit 312 extends to the conductive structure portion 110 and is electrically connected to the first conductive circuit 111.

[0035] The electrode contact portion 311 and the second conductive circuit 312 can be an integral structure and made of the same material, and the two are prepared in the same step using the same process. By setting the switching circuit 310 to include the electrode contact portion 311 and the second conductive circuit 312, the switching circuit 310 can be connected to the first conductive circuit 111 at a position far from the sampling electrode 200 through the second conductive circuit 312, further avoiding the contact between the sampling electrode 200 and the first conductive circuit 111, and further improving the reliability and accuracy of the collection of human body electrical signals.

[0036] Continue to refer Figure 1-Figure 4 , based on the above technical solution, optionally, the shape of each electrode contact part 311 is the same, and the size of each electrode contact part 311 along the same direction is the same. In this way, the resistance of the electrode contact part 311 in contact with different sampling electrodes 200 can be made more consistent, so that the human body electrical signals sampled by different sampling electrodes 200 will not cause transmission errors due to the differences in the electrode contact part 311, which is conducive to further ensuring the accuracy of the collection of human body electrical signals. Among them, the size of each electrode contact part 311 along the same direction is the same, which can refer to the size of each electrode contact part 311 along any same direction is the same. Exemplarily, when the shape of the electrode contact part 311 is circular, the radius of each electrode contact part 311 is the same; when the shape of the electrode contact part 311 is rectangular, the size of the long side of each electrode contact part 311 is the same, and the size of the short side of each electrode contact part 311 is also the same. Of course, in other optional embodiments, the shape and / or size of each electrode contact part 311 may also be different, and the utility model is not specifically limited here.

[0037] Continue to refer Figure 1-Figure 4 Optionally, the orthographic projection of the electrode contact portion 311 on the circuit layer 100 is within the first region 121 .

[0038] Among them, the orthographic projection of the electrode contact portion 311 on the circuit layer 100 is within the first area 121, which may mean that the orthographic projection of the electrode contact portion 311 on the circuit layer 100 overlaps with the first area 121, and the orthographic projection of the electrode contact portion 311 on the circuit layer 100 does not overlap with the edge of the first area 121. Specifically, the switching circuit layer 300 can be formed by printing the switching circuit 310 on the circuit layer 100 after the circuit layer 100 is prepared. Setting the orthographic projection of the electrode contact portion 311 on the circuit layer 100 within the first area 121 can make it difficult for the electrode contact portion 311 to exceed the first area 121 when printing the switching circuit layer 100, thereby avoiding material waste of the switching circuit layer 100.

[0039] Continue to refer Figure 1-Figure 4 Optionally, the shape of the electrode contact portion 311 is the same as the shape of the second region 122. In this way, the electrode contact portion 311 can be adapted to the shape of the second region 122 of the non-conductive structure portion 120, which is conducive to miniaturization of the conductive electrode.

[0040] Optionally, the shape of the second conductive circuit 312 is the same as the shape of the first region 121. In this way, the shape of the second conductive circuit 312 can be adapted to the shape of the first region 121 of the non-conductive structure 120, which is conducive to miniaturization of the conductive electrode.

[0041] refer to Figure 2 Optionally, the sampling electrode 200 covers the surface of the electrode contact portion 311 away from the circuit layer, and at least part of the side surface of the electrode contact portion 311, and the side surface of the electrode contact portion 311 intersects with the surface of the electrode contact portion 311 away from the circuit layer. In this way, the sampling electrode 200 can be fully in contact with the electrode contact portion 311, ensuring that the contact resistance between the sampling electrode 200 and the electrode contact portion 311 is small, so that the loss of human body electrical signals during transmission is small. In addition, since no conductive structure is provided at the non-conductive structure portion 120, even if the sampling electrode 200 exceeds the coverage range of the electrode contact portion 311 and contacts the non-conductive structure portion 120, it will not affect the accuracy and reliability of human body electrical signal collection.

[0042] In an optional embodiment of the present invention, the line width of each second conductive circuit 312 is the same, and / or the length of each second conductive circuit 312 is the same. In this way, the resistance of the second conductive circuit 312 with different switching circuits 310 can be more consistent, so that the human body electrical signals sampled by different sampling electrodes 200 will not cause transmission errors due to the differences in the second conductive circuit 312, which is conducive to further ensuring the accuracy of the collection of human body electrical signals. Of course, in other optional embodiments, the line width of each second conductive circuit 312 can be set to be different according to actual needs, and / or the length of each second conductive circuit 312 can be different, which is not specifically limited in this embodiment of the present invention.

[0043] Continue to refer Figure 1-Figure 4 On the basis of the above embodiments, optionally, the circuit layer includes a printed circuit board, the printed circuit board includes at least one conductive layer 101 and at least one insulating layer 102 stacked together; the conductive structure portion 110 includes a conductive layer 101 and an insulating layer 102, the conductive layer 101 includes a first conductive line 111; and the non-conductive structure portion 120 includes the insulating layer 102.

[0044] Optionally, the insulating layer 102 includes a substrate of a printed circuit board. In an optional embodiment of the present invention, the non-conductive structure 120 may include only a substrate. The conductive structure 110 may include a substrate and a first conductive circuit 111 on the substrate. When the first conductive circuit 111 includes at least two conductive layers 101, an interlayer insulating layer is further provided between adjacent conductive layers 101. In another optional embodiment of the present invention, the non-conductive structure 120 includes a substrate and an interlayer insulating layer.

[0045] On the basis of the above technical solutions, optionally, the material of the sampling electrode 200 is conductive gel, the material of the first conductive circuit 111 is copper, and the material of the switching circuit layer 300 is silver or silver paste containing silver chloride.

[0046] Specifically, the conductive gel can be a conductive gel material included in the conductive electrode of any existing ECG detection device. The conductive gel is corrosive to copper, but non-corrosive to silver or silver paste containing silver chloride. Therefore, by setting the switching circuit layer 300 to switch the sampling electrode 200 and the first conductive circuit 111, it is possible to ensure that the switching circuit layer 300 will not be corroded by the conductive gel on the basis of ensuring that the switching circuit layer 300 transmits the ECG signal sampled by the sampling electrode 200 to the first conductive circuit 111, thereby improving the reliability and accuracy of ECG signal transmission.

[0047] It should be noted that the silver paste containing silver chloride can be any silver paste containing silver chloride in the prior art, and can be selected from the ratio of silver paste containing silver chloride used in electrocardiograph detection devices in the prior art, and the embodiments of the present utility model are not specifically limited here.

[0048] Continue to refer Figure 1 Optionally, the conductive structure 110 further includes a power pad 400 and a power line 500. The power pad 400 is electrically connected to the power line 500. The power pad 400 is used to connect to a power source, and the power line 500 can transmit a power signal. Optionally, the conductive electrode further includes a connection interface 600, which can be used to connect to a host of the electrocardiogram detection device, and the host can analyze and process the electrical signal transmitted by the conductive electrode.

[0049] The embodiment of the utility model further provides an electrocardiogram detection device, which includes the conductive electrode of any of the above embodiments of the utility model and has the beneficial effects of the conductive electrode of any of the above embodiments of the utility model, which will not be described in detail here.

[0050] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A conductive electrode, characterized in that: include: A circuit layer, at least one sampling electrode and a switching circuit layer; The circuit layer includes a conductive structure portion and a non-conductive structure portion, the conductive structure portion is connected to the non-conductive structure portion, and the conductive structure portion includes a first conductive circuit; The sampling electrode is arranged on one side of the non-conductive structure; Part of the switching circuit layer is located between the sampling electrode and the non-conductive structure portion, the switching circuit layer contacts the sampling electrode, and extends to the conductive structure portion on one side of the non-conductive structure portion to be electrically connected to the first conductive circuit.

2. The conductive electrode according to claim 1, characterized in that It comprises at least two sampling electrodes, and the switching circuit layer comprises at least two switching circuits, and the switching circuits are electrically connected to the sampling electrodes in a one-to-one correspondence.

3. The conductive electrode according to claim 2, characterized in that: The switching circuit includes an electrode contact portion and a second conductive circuit, the non-conductive structure portion includes a first area and a second area, the electrode contact portion is located in the first area, and the second conductive circuit is located in the second area; The electrode contact portion is located between the sampling electrode and the non-conductive structure portion, the first end of the second conductive line is electrically connected to the electrode contact portion, and the second end of the second conductive line extends to the conductive structure portion and is electrically connected to the first conductive line.

4. The conductive electrode according to claim 3, characterized in that: The electrode contact portions have the same shape, and the electrode contact portions have the same size along the same direction.

5. The conductive electrode according to claim 3, characterized in that: The orthographic projection of the electrode contact portion on the circuit layer is within the first region.

6. The conductive electrode according to claim 3, characterized in that: The shape of the electrode contact portion is the same as that of the second region, and / or the shape of the second conductive line is the same as that of the first region.

7. The conductive electrode according to claim 3, characterized in that: The sampling electrode covers the surface of the electrode contact portion away from the circuit layer and at least a portion of the side surface of the electrode contact portion, and the side surface of the electrode contact portion intersects with the surface of the electrode contact portion away from the circuit layer.

8. The conductive electrode according to claim 1, characterized in that The circuit layer includes a printed circuit board, which includes at least one conductive layer and at least one insulating layer stacked together; the conductive structure includes the conductive layer and the insulating layer, and the conductive layer includes the first conductive line; and the non-conductive structure includes the insulating layer.

9. The conductive electrode according to any one of claims 1 to 8, characterized in that: The material of the sampling electrode is conductive gel, the material of the first conductive circuit is copper, and the material of the switching circuit layer is silver or silver paste containing silver chloride.

10. An electrocardiogram detection device, characterized in that: The conductive electrode comprises the conductive electrode as claimed in any one of claims 1 to 9.

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