Body surface electrode

Abstract

The utility model discloses a body surface electrode. The body surface electrode comprises a base material; a conductive coating over the substrate; the conductive coating comprises an acting part and a connecting part which are communicated, the acting part is used for acting on a human body, and the connecting part is in a thin and long shape and used for being connected with a connecting wire of equipment to achieve conduction between the equipment and the acting part; the conductive coating is completed through a printing process, the main material is conductive silver powder or conductive gold powder, and the resistance of the body surface electrode is less than or equal to 25 ohms; and the insulating layer covers part of the connecting part, is used for being taken by an operator to realize an insulating effect, and is used for insulating protection of parts except the acting part during treatment.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a body surface electrode. Background Technology

[0002] In the current medical device field, for therapeutic surface electrodes used on the skin surface to conduct electrical stimulation signals output by treatment devices to the human body through conductive materials, the product structure consists of conductive materials and connecting wires. Most therapeutic surface electrodes on the medical market use conductive rubber or hydrogel as the conductive material for direct contact with the human body. Under these conditions, the product resistance is approximately 50-500Ω, resulting in some degree of attenuation of the electrical stimulation intensity output by the treatment device. Furthermore, the connection between the surface electrodes and the device is mostly achieved through a plug-and-play connection between electrode wires. Currently, a small number of electronic beauty devices utilize non-woven fabric or thin-film printed conductive coating technology as the conductive medium between the electronic mask, the human body, and the serum. Its resistance can be as low as ≤30Ω, and the connection method is mostly magnetic or clip-on to the treatment host. Utility Model Content

[0003] Technical objective: To address the deficiency of high resistance in existing body surface electrodes, this utility model discloses a body surface electrode. The conductive coating is applied through a printing process, and the main material is conductive silver powder or conductive gold powder, achieving a body surface electrode resistance ≤25Ω.

[0004] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution.

[0005] A body surface electrode, comprising:

[0006] Substrate; conductive coating on the substrate; the conductive coating includes a connected active part and a connecting part, the active part being used on the human body, and the connecting part being elongated and used to connect to the device's connecting wire to achieve conductivity between the device and the active part; the conductive coating is completed by a printing process, and the material is conductive silver powder or conductive gold powder, with a resistance of ≤25Ω for the body surface electrodes; an insulating layer covering part of the connecting part, the insulating layer being used by the operator to achieve insulation effect and to provide insulation protection for parts other than the active part during treatment.

[0007] Preferably, a fixing sticker is provided below the substrate or a medical double-sided adhesive is provided above the substrate for marking the area on the human body to be used, and the working part of the electrode is located above the fixing sticker when it is used; alternatively, the medical double-sided adhesive can be placed above the substrate, that is, the double-sided adhesive and the conductive part are on the same side.

[0008] Preferably, a reinforcing plate is provided below the substrate corresponding to some of the connecting parts to strengthen the fixation of the connection line with the equipment and to provide support.

[0009] Preferably, one end of the substrate is further provided with several cutting lines for positioning the cutting area, and the areas on the substrate separated by the cutting lines are independently provided with conductive coatings.

[0010] Preferably, the substrate is a nonwoven fabric with a specification of 30~100 g / m². 2 The thickness ranges from 0.13mm to 0.5mm.

[0011] Preferably, the substrate is a thin film material, and a plurality of thin film holes are formed on the substrate corresponding to the functional part.

[0012] Preferably, the entire surface of the active part is a conductive surface or has a mesh-like conductive structure.

[0013] Preferably, the distance between the edge of the connecting part and the edge of the substrate is L1, L1≥5mm, so that no other conductive interface can be inserted into the connecting part; the distance between the edge of the functional part and the edge of the substrate is L2, L2≥2mm.

[0014] Preferably, medical double-sided adhesive is provided on the substrate and around the outer periphery of the functional part.

[0015] Beneficial effects: The conductive coating of this invention is applied through a printing process, and the main material is conductive silver powder or conductive gold powder, achieving a resistance of ≤25Ω for the surface electrode. In addition, the cutting line design on the substrate allows multiple conductive coatings to be applied to one substrate, facilitating precise placement on the treatment area. Attached Figure Description

[0016] Figure 1 This is a structural diagram of one embodiment of the present utility model;

[0017] Figure 2 for Figure 1 Exploded structure diagram;

[0018] Figure 3 This is a schematic diagram of the physical structure of silver powder particles;

[0019] Figure 4 This is a structural diagram of another embodiment of the present invention;

[0020] Figure 5 This is a structural diagram of another embodiment of the present invention;

[0021] Figure 6 This is a flowchart of the conductive coating printing process.

[0022] Figure 7 This is a structural diagram of another embodiment of the present utility model;

[0023] Figure 8 for Figure 7 Exploded structure diagram;

[0024] Among them, 100 is the substrate, 101 is the film hole, 200 is the conductive coating, 201 is the functional part, 202 is the connecting part, 300 is the insulating layer, 400 is the fixing sticker, 500 is the reinforcing plate, 5001 is the cutting line, and 600 is the medical double-sided tape. Detailed Implementation

[0025] The following description, in conjunction with the accompanying drawings and embodiments, provides a further explanation and illustration of a surface electrode according to the present invention.

[0026] As attached Figure 1 and attached Figure 2 As shown, a body surface electrode according to this embodiment includes:

[0027] Substrate 100, in this embodiment, can be a non-woven fabric, preferably 30~100 g / m 2 Further, the nonwoven fabric can be semi-cross or fully cross-laminated, with full cross-laminated being preferred; further, the thickness of the nonwoven fabric is in the range of 0.13mm to 0.5mm, with 0.18mm being preferred; the substrate can also be a film substrate, such as polyurethane, silicone rubber, natural latex, and other materials that have good compatibility with the conductive coating.

[0028] A conductive coating 200 is located on the substrate 100. The conductive coating 200 can be made of conductive silver powder or conductive gold powder, and is applied by a printing process. Alternatively, ordinary conductive powder or nano-conductive components can be selected. The resistance of the surface electrode after printing and drying is ≤25Ω. A preferred conductive silver paste prepared from conductive silver powder contains the following components by mass percentage: 50-80% conductive agent, 0.5%-4% curing agent, 2%-5% additives, and the remainder is solvent. The conductive medium in the conductive silver paste is preferably silver powder with a particle size range of 1-30µm, preferably 3-10µm. Further, silver particles with a particle size <100nm can be selected. Gold powder or nano-gold materials can also be selected. The physical structure of the silver powder particles can be spherical, plate-like, dendritic, or intermediate morphology, or a freely combined morphology. The preferred structure of the silver powder particles is one that can accelerate the volatilization of the curing agent at a certain temperature. Figure 3 From left to right, these are schematic diagrams of the physical structures of silver powder particles with spherical, plate-like, and dendritic structures.

[0029] The conductive coating 200 includes a connected functional part 201 and a connecting part 202. The functional part 201 is used to act on the human body, and its entire surface is conductive or it is conductive in a mesh pattern. In this embodiment, it is a mesh, and the width of the conductive part within the mesh is preferably 0.5mm-2mm. The spacing of the cutouts within the mesh is preferably 0.5mm-2.5mm. The connecting part 202 is elongated and is used to connect to the connection line of the device, enabling the device to conduct to the functional part 201. The substrate 100 below the connecting part 202 is widened.

[0030] The distance between the edge of the connecting part 202 and the edge of the substrate 100 is L1. This distance effectively prevents the connecting part from being accidentally inserted into the interface of other devices. L1 ≥ 5mm.

[0031] The distance between the edge of the functional part 201 and the edge of the substrate 100 is L2, where L2 ≥ 2 mm;

[0032] Furthermore, the conductivity of the medium used to fill the human body and the electrode surface between the target area and the electrode surface, such as gel or serum, is ≥200 μS / cm.

[0033] The printing process for the substrates all adopts gravure printing technology. Taking conductive silver paste as an example:

[0034] As attached Figure 6 As shown, after placing the substrate in a fixed position, the first conductive layer is printed and dried until surface dry; then the second conductive coating is printed and dried. This drying process requires complete drying under the following conditions: 60℃-85℃, drying time 1 hour-N hours, N≥3.

[0035] After the resistance performance test after drying is qualified, the insulating layer is printed. The number of times the insulating layer is printed is 1 to 3. After printing, it is completely dried. The drying conditions are: 60℃-85℃, drying time is 1 hour to N hours, N≥3.

[0036] The insulating layer 300 covers the connecting part 202. The insulating layer 300 is used by the operator to handle and achieves the insulation effect, as well as the insulation protection of the part other than the treatment part during treatment. The material is preferably a highly insulating elastic material, such as water-based slurry, adhesive, UV varnish, etc.

[0037] The length of the insulating layer 300 is L4, which is the distance from the conductive part to the connection end with the equipment. Typically, L4 is set to 100mm~430mm. The width of the insulating layer must exceed the width of the connection part 202, and the excess range is 0.5mm~3.0mm.

[0038] A fixing sticker 400 is located below the substrate. The fixing sticker 400 is used to mark the parts of the human body to be applied, and the application part 201 is located above the fixing sticker 400 when the surface electrode is used. In other embodiments, the fixing sticker may not be used. The application can be made directly to the human skin by relying on the adhesion of the substrate itself, adding double-sided adhesive to the substrate, or introducing other media to increase the adhesion of the substrate itself. In addition, in some other embodiments of this utility model, the marking of the parts of the human body to be applied can also be achieved by setting medical double-sided adhesive 600 on the substrate, that is, the medical double-sided adhesive 600 is on the same side as the conductive part.

[0039] A reinforcing plate 500 is located below the substrate and below part of the connecting portion 202. The reinforcing plate 500 is used to strengthen the fixation of the connection line with the equipment, providing support and effectively preventing the interface portion of other equipment from being accidentally inserted due to the flexibility of the body surface electrode. The distance between the edge of the reinforcing plate 500 and the edge of the functional portion 201 is L3, and L3 ranges from 100mm to 360mm.

[0040] In some other embodiments of this utility model, one end of the substrate 100 is further provided with several cutting lines for positioning the cutting area, and the areas on the substrate 100 separated by the cutting lines are independently provided with conductive coatings 200, so that multiple conductive coatings are on one substrate, effectively ensuring physical isolation between the conductive coatings, and facilitating fixed placement on the treatment site; as shown in the attached figure. Figure 4 and attached Figure 5 As shown, the blue lines are the cutting lines. (Attached) Figure 5 The 5001 in the designation refers to the cutting line. This invention can prevent micro-short circuits caused by abnormal output of treatment equipment in the application scenario, which could lead to the breakdown of the surface electrodes due to the proximity of the positive and negative poles, thus posing a safety risk. At the same time, the independent conductive coatings allow for adjustment of the treatment site according to the actual situation of each patient during treatment, improving the accuracy of treatment positioning.

[0041] Unlike the embodiments described above, as shown in the appendix Figure 7 and attached Figure 8 As shown, another embodiment of this utility model discloses a surface electrode. The substrate 100 is a thin film material, such as silicone film or polyurethane film. A conductive coating 200 is located on the substrate 100. The conductive coating 200 includes a connected functional portion 201 and a connecting portion 202. The functional portion 201 is used to act on the human body. Several thin film holes 101 are formed on the substrate corresponding to the functional portion 201 for filling with a medium, such as gel or medical dressing, during use. This effectively prevents differences in therapeutic sensation caused by the functional area and the conductive coating 200 lifting during treatment, effectively avoiding safety-related incidents. The connecting portion 202 is elongated and used to connect to the device's connecting wire, enabling the device to conduct to the functional portion 201. An insulating layer 300 covers part of the connecting portion 202. A reinforcing plate 500 is provided below the substrate and below part of the connecting portion 202.

[0042] In this embodiment, medical double-sided adhesive 600 is provided on the substrate and the outer periphery of the active part 201, that is, the medical double-sided adhesive 600 is on the same side as the conductive part, so as to mark the part of the human body that needs to be used, and to achieve effective and sufficient adhesion between the substrate and the active part.

[0043] In addition, in this embodiment, the part of the human body to be used can also be marked by setting a fixing sticker 400 under the substrate. When the surface electrode is used, the working part 201 is located above the fixing sticker 400. However, it should be noted that the fixing sticker needs to be hollowed out to release the space of the film hole 101.

[0044] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A body surface electrode, characterized by, It comprises: a substrate; a conductive coating layer on the substrate; the conductive coating layer comprises a working part for acting on the human body and a connecting part in the shape of an elongated strip for connecting with the connecting line of the device to realize the conduction between the device and the working part; the conductive coating layer is completed by a printing process and is made of conductive silver powder or conductive gold powder, and the resistance of the body surface electrode is less than or equal to 25Ω; an insulating layer covering the connecting part is used for the operator to take the body surface electrode, realizes the insulation effect and is used for the insulation protection of the part other than the working part during treatment.

2. A body surface electrode according to claim 1, wherein: A fixing patch is arranged below the substrate for marking the part of the human body to be acted on, and the working part of the body surface electrode is above the fixing patch during use.

3. A body surface electrode according to claim 1, wherein: A reinforcing plate is arranged below the substrate corresponding to the connecting part for strengthening the fixation with the connecting line of the device and playing a supporting role.

4. A body surface electrode according to claim 1, wherein: A plurality of cutting lines are arranged at one end of the substrate for positioning the cutting area, and the area separated by the cutting lines on the substrate is independently provided with the conductive coating layer.

5. A body surface electrode according to claim 1, characterized in that: The base material is a non-woven fabric with a specification of 30-100 g / m 2 and a thickness ranging from 0.13 mm to 0.5 mm.

6. A body surface electrode according to claim 1, wherein: The substrate is a film material, and a plurality of film holes are arranged on the substrate corresponding to the working part.

7. A body surface electrode according to claim 1, wherein: The whole surface of the working part is a conductive surface or is in the form of a net-shaped conductive surface.

8. A body surface electrode according to claim 1, wherein: The distance between the edge of the connecting part and the edge of the substrate is L1, and L1 is greater than or equal to 5mm, so that the connecting part cannot be inserted into other conductive interfaces; the distance between the edge of the working part and the edge of the substrate is L2, and L2 is greater than or equal to 2mm.

9. A body surface electrode according to claim 1, wherein: Medical double-sided adhesive tape is arranged on the substrate and the outer periphery of the working part.

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