Tumor electric field treatment system and electrode patch thereof

Abstract

The utility model provides a tumor electric field treatment system and an electrode patch thereof, the electrode patch comprises an electrode array and a plurality of sticking pieces, and the electrode array is provided with a plurality of electrode units, a plurality of connecting parts for connecting two adjacent electrode units and a wiring part. The plurality of pasting pieces cover the plurality of electrode units in a one-to-one correspondence mode, the surrounding area of the outer contour lines of the pasting pieces is larger than that of the outer contour lines of the electrode units, and the faces, facing the pasting pieces, of the electrode units and the peripheral sides of the electrode units are all covered by the pasting pieces. The pasting pieces of the electrode patch of the tumor electric field treatment system are arranged on the electrode units in a one-to-one correspondence mode and cover the peripheral sides of the electrode units, so that the situation that a patient is scratched when the edges of the electrode units make contact with the body surface of the patient can be avoided, and meanwhile the interval area, covered by the pasting pieces, between the electrode units is reduced; heat dissipation of the electrode unit is improved, and enough space is provided for replacement of the pasting piece.

Description

Technical Field

[0001] The present application relates to a tumor electric field treatment system and an electrode patch thereof. Background Art

[0002] Medium frequency alternating electric field therapy has been proven to be an effective method for tumor treatment. It can interfere with the mitosis process of cancer cells, induce apoptosis of cancer cells, and can be used to treat tumors. The tumor electric field therapy system usually includes an electric field generator, an adapter, and multiple pairs of electrode patches. The electric field generator generates an alternating electric signal and transmits the alternating electric signal to the electrode patch through the adapter. The electrode patches are applied in pairs on the skin surface of the subject on opposite sides, and an alternating current signal is applied between each pair of electrode patches, thereby applying a tumor treatment electric field to the target area.

[0003] The electrode patch disclosed in China Invention Publication No. 115175730 includes a flexible backing, an electrode array disposed on the backing, and a plurality of adhesives disposed on the electrode array, wherein the electrode array includes a plurality of electrode units spaced apart and arranged in an array shape, the electrode unit includes a flexible circuit, a conductive pad disposed on the flexible circuit, and a dielectric layer electrically connected to the conductive pad and made of a flexible polymer, and the plurality of adhesives are conductive hydrogels and are respectively attached to the side of the dielectric layer of the corresponding electrode unit facing the patient's body surface. Although the electrode patch achieves good contact between the electrode unit and the patient's body surface by sandwiching the conductive hydrogel between the electrode unit and the patient's body surface skin, the size of the side of the conductive hydrogel of the electrode patch that contacts the dielectric layer of the electrode unit is not only smaller than the size of the dielectric layer of the electrode unit, but also smaller than the size of the flexible circuit of the electrode unit, so there will be problems such as the flexible circuit scratching the patient's body surface due to the contact between the flexible circuit of the electrode unit and the patient's body surface when the electrode patch is attached to the patient's body surface, and the dielectric layer directly contacts the patient's body surface, causing safety hazards.

[0004] In addition, the existing electrode patch disclosed in Chinese Invention Patent Publication No. 117715678 covers two electrode units made of ceramics at the same time through a conductive hydrogel. Although the size of the conductive hydrogel is larger than the size of the ceramics attached to it, it will cover the gap between the two electrode units, affecting the heat dissipation of the electrode patch.

[0005] Therefore, it is necessary to improve the existing tumor electric field therapy system and its electrode patch. Utility Model Content

[0006] The present application provides an electrode patch with good heat dissipation performance and safe use.

[0007] Specifically, the present application is implemented through the following technical scheme: an electrode patch, including an electrode array and a plurality of adhesive members, the electrode array is provided with a plurality of electrode units, a plurality of connecting portions and wiring portions connecting two adjacent electrode units, the plurality of adhesive members are covered on the plurality of electrode units in a one-to-one correspondence, and the electrode unit is covered by the adhesive members on one side facing the adhesive members and on its surrounding side.

[0008] According to an embodiment of the present invention, the electrode unit includes a main body, a conductive sheet disposed on the main body, and a dielectric layer covering the conductive sheet, and an area enclosed by an outer contour of the dielectric layer is larger than an area enclosed by an outer contour of the conductive sheet.

[0009] According to an embodiment of the present invention, the electrode unit further includes an alloy layer, and the alloy layer covers the dielectric layer.

[0010] According to an embodiment of the present invention, the electrode unit further includes an insulating layer that presses the conductive sheet onto the main body and allows the conductive sheet to be exposed, and the dielectric layer covers the region where the conductive sheet is exposed from the insulating layer.

[0011] According to an embodiment of the present invention, the main body is provided with a plurality of through holes arranged around the periphery of the conductive sheet.

[0012] According to an embodiment of the present invention, the dielectric layer and / or the alloy layer covers the inner wall of the through hole.

[0013] According to an embodiment of the present invention, the portion of the adhesive member that exceeds the edge of the corresponding electrode unit has a width dimension not exceeding 0.5 mm.

[0014] According to an embodiment of the present invention, the electrode array includes a left part and a right part that are bilaterally symmetrical, and each of the left part and the right part is provided with a plurality of electrode units of different shapes.

[0015] According to an embodiment of the present invention, the portion of the adhesive member that exceeds the edge of the corresponding electrode unit has a width dimension not exceeding 2 mm.

[0016] The present application also adopts the following technical scheme: an electrode patch, comprising an electrode array and a plurality of adhesive members, wherein the electrode array comprises a flexible circuit board on which a plurality of spaced conductive sheets are arranged and a plurality of dielectric regions arranged on the flexible circuit board, wherein the plurality of dielectric regions are arranged on the plurality of conductive sheets in a one-to-one correspondence, and the plurality of adhesive members are covered in a one-to-one correspondence on a plurality of electrode units consisting of the portions of the flexible circuit board where the conductive sheets are arranged, the conductive sheets and the dielectric regions, wherein the electrode units are surrounded by the corresponding adhesive members and the side facing the adhesive members is covered by the adhesive members.

[0017] According to an embodiment of the present invention, the outer contour of the adhesive piece is located outside the outer contour of the electrode unit, and the portion of the adhesive piece that exceeds the edge of the corresponding electrode unit has a width dimension not exceeding 0.5 mm.

[0018] According to an embodiment of the present invention, the outer contour of the adhesive piece is located outside the outer contour of the electrode unit, and the portion of the adhesive piece that exceeds the edge of the corresponding electrode unit has a width dimension not exceeding 2 mm.

[0019] According to an embodiment of the present invention, the flexible circuit board is provided with a plurality of through holes surrounding the circumference of the conductive sheet, and the dielectric region covers the inner walls of the through holes.

[0020] According to an embodiment of the present invention, an area enclosed by an outer contour of the dielectric region is larger than an area enclosed by an outer contour of the corresponding conductive sheet.

[0021] According to an embodiment of the utility model, an insulating layer is further provided on the flexible circuit board, and the insulating layer presses the conductive sheet to a corresponding position of the flexible circuit board, and the dielectric region is laid on the insulating layer and the region where the conductive sheet is exposed from the insulating layer.

[0022] According to an embodiment of the present invention, the adhesive member covers the dielectric area.

[0023] The present application also provides a tumor electric field treatment system: a tumor electric field treatment system, which includes an electric field generator, an adapter and a plurality of the aforementioned electrode patches arranged in pairs.

[0024] The adhesive parts of the electrode patch of the tumor electric field therapy system of the present application are arranged on the electrode unit in a one-to-one correspondence and cover the circumference of the electrode unit. This can avoid scratching the patient when the edge of the electrode unit contacts the patient's body surface, while also reducing the spacing area between the electrode units covered by the adhesive parts, increasing the space between the electrode units that allows moisture from the patient's body surface to escape, thereby improving the heat dissipation effect of the electrode patch, avoiding skin problems caused by clogging of pores due to sweat and the like during long-term tumor treatment, and facilitating the replacement of the adhesive parts when they are deformed or damaged.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a structural block diagram of a tumor electric field treatment system according to one embodiment of the present application;

[0027] Figure 2 is a three-dimensional exploded view of an electrode patch according to a first embodiment of the present application;

[0028] Figure 3 for Figure 2 A plan view of an electrode array of an electrode patch;

[0029] Figure 4 For along Figure 3 The cross-sectional view obtained along the AA line in FIG.

[0030] Figure 5 for Figure 3 A plan view of a single electrode unit of the electrode array shown, wherein the insulating layer, the dielectric layer and the alloy layer have not yet been laid;

[0031] Figure 6 for Figure 3 Another plan view of a single electrode unit of the electrode array shown in FIG. Figure 5 An insulating layer is further laid on the electrode unit shown;

[0032] Figure 7 for Figure 2 A plan view of the electrode patch in which the backing is omitted;

[0033] Figure 8 For along Figure 7 The cross-sectional view obtained along the BB line in ;

[0034] Fig. 9 is a plan view of an electrode patch according to a second embodiment of the present application, wherein the backing is omitted;

[0035] Fig.10It is a plan view of an electrode patch according to a third embodiment of the present application, in which the backing is omitted.

[0036] Description of reference numerals:

[0037] Tumor electric field therapy system 100, electric field generator 10, adapter 20, electrode patches 30, 40, 50, backing 31, electrode array 32, 42, 52, electrode units 320, 420, 520, main body 3201, conductive sheet 3202, insulating layer 3203, dielectric layer 3204, alloy layer 3205, through hole 3206, opening 3207, pad 3208, fan-shaped area 3209, connecting part 321, 521, first connecting part 5211, second connecting part 5212, wiring part 322, 522, gold finger 3221, conductive trace 323, adhesive 33, 43, 53, first electrode unit 520A, second electrode unit 520B, third electrode unit 520C, fourth electrode unit 520D, fifth electrode unit 520E, sixth electrode unit 520F. DETAILED DESCRIPTION

[0038] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices, systems, equipment and methods consistent with some aspects of the present application.

[0039] refer to Figure 1 and Figure 2 As shown, the tumor electric field treatment system 100 includes an electric field generator 10, an adapter 20 and a plurality of electrode patches 30 arranged in pairs, and the adapter 20 electrically connects the electric field generator 10 and each electrode patch 30. The electric field generator 10 generates an alternating current signal that meets the treatment requirements, and the adapter 20 receives the alternating current signal output from the electric field generator 10 and transmits the alternating current signal to the electrode patch 30, so that a therapeutic electric field for treating tumors is generated between the same pair of electrode patches 30. The electrode patch 30 includes a backing 31, an electrode array 32 adhered to the backing 31, and a plurality of adhesives 33. The electrode array 32 is attached to the body surface corresponding to the patient's tumor site and applies an alternating electric field to the patient's tumor site to interfere with or prevent the mitosis of the patient's tumor cells, thereby achieving the purpose of treating the tumor.

[0040] The backing 31 is provided in a sheet form and is made of a flexible and breathable insulating material. The backing 31 has the characteristics of being soft, thin, moisture-proof, and breathable, so that when it is attached to the patient's body surface for a long time, the patient's skin surface can still be kept dry. A biocompatible adhesive (not shown) is coated on the front surface of the backing 31 facing the patient's body surface, and is used to closely attach the backing 31 to the body surface corresponding to the patient's tumor site. A plurality of narrow slits (not shown) communicating with the outside can also be provided on the backing 31, so that the distance between the electrode units 320 of the electrode array 32 can be freely adjusted after it is pasted together with the electrode array 32.

[0041] Combined Figure 3 As shown, the electrode array 32 is provided on the front surface of the backing 31. The electrode array 32 includes a plurality of electrode units 320, a plurality of connecting portions 321 connecting two adjacent electrode units 320, and a wiring portion 322 laterally extending from one of the connecting portions 321. In this embodiment, the electrode array 32 is provided with 9 circular electrode units 320 arranged in a three-row and three-column matrix, and the electrode array 32 is generally arranged in a "king" shape. Some of the electrode units 320 are provided with temperature sensing units (not shown), and the adhesive members 33 respectively cover the electrode units 320 one by one. The wiring portion 322 extends outward from a connecting portion 321 between two adjacent electrode units 320 in the middle row, and a plurality of gold fingers 3221 exposed on its surface are respectively provided on the front and back sides of the free end of the wiring portion 322.

[0042] Combined Figures 4 to 6 As shown, the electrode unit 320 includes a main body portion 3201, a conductive sheet 3202 provided on the side of the main body portion 3201 facing the skin, an insulating layer 3203 covering the main body portion 3201 and partially covering the conductive sheet 3202, a dielectric layer 3204 covering the insulating layer 3203 and the part of the conductive sheet 3202 exposed from the insulating layer 3203, and an alloy layer 3205 covering the dielectric layer 3204.

[0043] The main body portion 3201 has the characteristics of being light in mass, thin in thickness, bendable, and having a high deflection. In this embodiment, the main body portion 3201 is made of polyimide or polyester film material. The main body portion 3201 is provided in a circular sheet form and has a thickness not greater than 300 μm. Preferably, the thickness of the main body portion 3201 is 100 μm - 300 μm. A plurality of through holes 3206 are provided at the peripheral edge of the main body portion 3201, and the through holes 3206 can provide a heat dissipation channel to quickly export heat, water vapor, etc. at the skin.

[0044] The conductive sheet 3202 is disposed on the main body 3201, and is in the shape of a ring and is disposed concentrically with the main body 3201. The conductive sheet 3202 is made of rolled copper foil or electrolytic copper foil with a thickness of 10μm-75μm. The conductive sheet 3202 is located in the area surrounded by the outer contour line of the main body 3201 so as to obtain full support of the main body 3201, while avoiding the risk of leakage caused by the exposure of the conductive sheet 3202. Preferably, the distance between the outer contour line of the conductive sheet 3202 and the outer contour line of the main body 3201 is 1.2mm-2.5mm. A through opening 3207 is provided at the center of the conductive sheet 3202, and the partial electrode unit 320 also includes a pair of pads 3208 disposed on the main body 3201 and located in the opening 3207, for electrically connecting a temperature sensing unit (not shown). A number of through holes 3206 are arranged around the periphery of the conductive sheet 3202.

[0045] Figure 6 The shaded portion in the figure shows the insulating layer 3203, which presses the conductive sheet 3202 onto the main body 3201 and exposes part of the conductive sheet 3202. The insulating layer 3203 is generally arranged in a hub shape, and the four sector-shaped areas 3209 of the conductive sheet 3202 expose the insulating layer 3203, and the pad 3208 also exposes the insulating layer 3203. The insulating layer 3203 covers part of the conductive sheet 3202 to prevent the part of the conductive sheet 3202 covered by the insulating layer 3203 from transmitting electrical signals to the dielectric layer 3204, thereby reducing the heating of the electrode unit 320 when an alternating current signal for tumor treatment is applied through each electrode unit 320 of the electrode patch 30, thereby improving the heat dissipation effect of each electrode unit 320 of the electrode patch 30. The insulating layer 3203 can also extend to each connecting portion 321 and the wiring portion 322.

[0046] The dielectric layer 3204 is laid with each electrode unit 320 as the object. The dielectric layer 3204 can completely cover the side of the conductive sheet 3202 facing the patient's body surface to prevent the conductive sheet 3202 from directly contacting the patient, and avoid affecting the patient's safety due to the non-capacitive coupling between the electrode unit 320 and the patient. The dielectric layer 3204 is a polymer dielectric layer with a high dielectric constant and low dielectric loss, which is made of a thin film material with a non-fixed crystal orientation, high flexibility and high toughness. The material of the dielectric layer 3204 is a polymer with a dielectric constant of not less than 20 and a dielectric strength of not less than 40V / μm to avoid breakdown under normal applied voltage. The polymer is a polymer with relaxor ferroelectric behavior, which can be a vinyl fluoride polymer, such as P(VDF-TrFE-CTFE), P(VDF-TrFE-CFE) or P(VDF-TrFE-CFE-CTFE); it can also be a polyamide composite material, such as piperazine-biuret Biuret copolymer polyamide. The dielectric layer 3204 can be formed on the surface of the conductive sheet 3202 by evaporation, sputtering or ion plating vapor deposition, or by printing, spraying or casting. The thickness of the dielectric layer 3204 is 3 μm-10 μm. The area enclosed by the outer contour of the side of the dielectric layer 3204 in contact with the conductive sheet 3202 is larger than the area enclosed by the outer contour of the side of the conductive sheet 3202 facing the patient's body surface, and the dielectric layer 3204 also covers the inner wall of the main body 3201 around the through hole 3206.

[0047] The alloy layer 3205 disposed on the dielectric layer 3204 is used as an auxiliary layer to increase the conductivity between the dielectric layer 3204 and the adhesive member 33. The size of the alloy layer 3205 is slightly smaller than the size of the dielectric layer 3204, that is, the edge of the alloy layer 3205 is located on the inner side of the edge of the dielectric layer 3204. The material of the alloy layer 3205 can be one or more of zinc-aluminum alloy, zinc-copper alloy, silver-titanium, or graphite. The alloy layer 3205 can be deposited on the surface of the dielectric layer 3204 using a vapor deposition method. The alloy layer 3205 also covers the dielectric layer 3204 on the inner wall around the through hole 3206 of the main body 3201.

[0048] The connecting portion 321, the wiring portion 322, the main body 3201 of the electrode unit 320 and the conductive sheet 3202 together constitute a flexible circuit board (not numbered) of the electrode array 32. The flexible circuit board (not numbered) is also provided with a plurality of conductive traces 323 connected to the corresponding gold fingers 3221 of the wiring portion 322 to transmit the alternating current signal to the conductive sheet 3202 of each electrode unit 320 and to transmit the signal for the temperature measurement signal to the pad 3208. The plurality of dielectric layers 3204 are also dielectric regions that are coated on the flexible circuit board (not numbered) in a plurality of intervals, and are provided corresponding to the main body 3201 of the flexible circuit board (not numbered).

[0049] refer to Figure 2 As shown, the number of adhesive members 33 is consistent with the number of electrode units 320, so that they are arranged one by one with the electrode units 320 and covered on the corresponding electrode units 320. Such corresponding arrangement can minimize the coverage area of ​​the adhesive members 33, so that the intervals (unnumbered) between the electrode units 320 are only covered by the backing 31, allowing the patient's skin to breathe freely, allowing the sweat and moisture on the patient's body surface to escape from the intervals (unnumbered) between the electrode units 320, improving the heat dissipation of the electrode patch 30, and avoiding skin problems caused by the patient's skin surface pores being blocked by sweat. Each adhesive member 33 has double-sided adhesiveness, one side of which is attached to the alloy layer 3205 of the electrode unit 320, and the other side is attached to the patient's skin surface as a covering layer, so that the electrode array 32 can be well attached to the patient's body surface and the patient's skin surface can also be kept moist. The adhesive member 33 is preferably a conductive adhesive member. Specifically, the adhesive member 33 can be a conductive hydrogel or other biocompatible conductive adhesive.

[0050] The shape of each adhesive member 33 is substantially the same as the shape of the corresponding electrode unit 320, and in this embodiment, it is circular. Figure 7 and Figure 8 As shown, Figure 7The dotted line in the figure is the outer contour line of the electrode unit 320. The area enclosed by the outer contour of the adhesive 33 is slightly larger than the area enclosed by the outer contour line of the corresponding electrode unit 320, that is, the electrode unit 320 is located in the area enclosed by the outer contour line of its corresponding adhesive 33, so as to ensure that the adhesive 33 can completely cover the edge of the corresponding electrode unit 320, provide safety for the electrode patch 30, avoid the periphery of the main body 3201 close to the electrode unit 320 from contacting the patient's skin surface and causing scratches on the patient's skin, and avoid the edges of the dielectric layer 3204 and the alloy layer 3205 of the electrode unit 320 from directly contacting the patient's skin surface and causing safety hazards. The portion of the adhesive member 33 that exceeds the edge of the electrode unit 320 is directly adhered to the backing 31 after surrounding the circumference of the electrode unit 320, and then the corresponding electrode unit 320 is clamped and fixed between the backing 31 and the adhesive member 33, so as to prevent the patient's body sweat and water vapor from entering between the conductive sheet 3202 and the dielectric layer 3204 of the electrode unit 320 to affect the performance of the electrode unit 320, protect the electrode unit 320, and prevent the electrode unit 320 from directly contacting the patient to cause safety hazards or scratch the patient. The width of the portion of the adhesive member 33 that exceeds the edge of the electrode unit 320 does not exceed 0.5 mm. In addition to ensuring the protection of the electrode unit 320 by the adhesive member 33, it can also allow a larger interval (unnumbered) between two adjacent electrode units 320, so as to facilitate the attachment and replacement of the adhesive member 33 when the adhesive member 33 is deformed, damaged and needs to be replaced, while increasing the heat dissipation area of ​​the electrode array 32, and improving the heat dissipation efficiency of the electrode unit 320 of the electrode patch 30.

[0051] The electrode patch 30 also includes a wire (not shown) electrically connected to the wiring portion 322 of the electrode array 32. The end of the wire (not shown) away from the wiring portion 322 is provided with a plug (not shown) electrically connected to the adapter 20. The adapter 20 is electrically connected to the electric field generator 10 to realize signal transmission between the electrode patch 30 and the electric field generator 10.

[0052] The electrode patch 30 also includes a release paper (not shown) pasted on the outside of the adhesive member 33 and the backing 31 to protect the backing 31 and the adhesive member 33 and prevent the backing 31 and the adhesive member 33 from being contaminated. The electrode patch 30 can be covered on the adhesive member 33 and the backing 31 by only one piece of release paper (not shown), or can be covered on the adhesive member 33 and the backing 31 by two or more pieces of release paper (not shown). When in use, tear off the release paper (not shown) and stick the electrode patch 30 on the body surface corresponding to the tumor site of the patient.

[0053] Fig. 9An electrode patch 40 of a second embodiment is provided, which includes a backing (not shown), an electrode array 42, and a plurality of adhesive members 43. The difference between the electrode patch 40 and the electrode patch 30 in the previous embodiment is mainly that the number of electrode units 420 of the electrode array 42 is different, and the arrangement is also different. A single electrode unit 420 is exactly the same as the electrode unit 320 of the electrode patch 30, and will not be repeated. The electrode patch 40 is provided with twenty electrode units 420, which are arranged roughly in four rows and six columns, with four electrode units 420 in each of the first and last rows, and six electrode units 420 in each of the middle two rows. The adhesive member 43 covers the electrode unit 420 in the same manner as the adhesive member 33 covers the electrode unit 320. The adhesive member 43 covers the electrode unit 420 in a one-to-one manner and completely covers the periphery of the electrode unit 420, thereby improving the heat dissipation efficiency of the electrode patch 40 while ensuring its safety, thereby preventing the dielectric layer (not shown) and the alloy layer (not shown) near the periphery of the electrode unit 420 from directly contacting the patient's body surface to cause safety hazards, and also preventing the main body of the electrode unit 420 (not shown) from directly contacting the patient's body surface to cause scratches or punctures to the patient. The outer contour line of the electrode unit 420 is in Fig. 9 It is indicated by dotted lines for ease of understanding. For specific contents, reference may be made to the relevant description in the first embodiment, which will not be repeated here.

[0054] Fig.10 An electrode patch 50 of a third embodiment is provided, which includes a backing (not shown), an electrode array 52, and a plurality of adhesive members 53. The electrode patch 50 is different from the electrode patch 30 of the first embodiment mainly in that the shape of the electrode array 52 is different, and the shape, number, and arrangement of the electrode units 520 of the electrode array 52 are also different, but the hierarchical structure of a single electrode unit 520 is the same as the electrode unit 320 of the electrode patch 30, and the differences are mainly described below.

[0055] The outer contour of the electrode array 52 is roughly arranged in a water drop shape, and the electrode array 52 includes six electrode units 520 arranged at intervals, a plurality of connecting portions 521 connecting two adjacent electrode units 520, and a wiring portion 522 extending outward from one of the connecting portions 521. The six electrode units 520 are divided into a left part and a right part that are spaced apart and symmetrical on the left and right sides, and the left part and the right part are symmetrically arranged in a roughly half water drop shape, wherein the left part includes a first electrode unit 520A, a second electrode unit 520B, and a third electrode unit 520C that are spaced apart from top to bottom, and the right part includes a fourth electrode unit 520D, a fifth electrode unit 520E, and a sixth electrode unit 520F that are spaced apart from top to bottom.

[0056] Each electrode unit 520 is arranged in a sheet shape, the first electrode unit 520A and the fourth electrode unit 520D are arranged roughly in a triangle shape, the second electrode unit 520B and the fifth electrode unit 520E are arranged roughly in a trapezoidal shape, and the third electrode unit 520C and the sixth electrode unit 520F are arranged roughly in a fan shape. The electrode array 52 uses electrode units 520 of different areas to better meet the attachment requirements of different positions on the patient's body surface, especially suitable for tumor electric field therapy in areas such as the head with a small attachment area and few flat areas. Among them, a temperature sensor unit (not shown) is each provided on the first electrode unit 520A, the third electrode unit 520C, the fourth electrode unit 520D and the sixth electrode unit 520F.

[0057] The plurality of connection parts 521 include a first connection part 5211 and a plurality of second connection parts 5212. The first connection part 5211 connects the second electrode unit 520B and the fifth electrode unit 520E to realize the electrical connection between the left part and the right part of the electrode array 52. ​​The first connection part 5211 is located in the interval (not numbered) formed between the left part and the right part of the electrode array 52. ​​The plurality of second connection parts 5212 respectively connect two adjacent electrode units 520 located in the left part and two adjacent electrode units 520 located in the right part. The second connection part 5212 is arranged in an S shape, and the relative position of the two electrode units 520 connected thereto can be appropriately adjusted for convenient application. The wiring part 522 extends downward from the first connection part 5211 along the interval between the left part and the right part.

[0058] The adhesive piece 53 is set corresponding to the electrode unit 520, and there are 6 pieces in total. Its shape is consistent with the outer contour line of the corresponding electrode unit 520. The way in which the adhesive piece 53 covers the electrode unit 520 is the same as the way in which the adhesive piece 33 covers the electrode unit 320. The adhesive piece 53 covers the corresponding electrode unit 520 in a one-to-one correspondence and completely covers the periphery of the corresponding electrode unit 520, while improving the heat dissipation efficiency of the electrode patch 50 while ensuring its safety, avoiding the dielectric layer (not shown) and alloy layer (not shown) close to the periphery of the electrode unit 520 from directly contacting the patient's body surface to cause safety hazards, and also avoiding the main body of the electrode unit 520 (not shown) from directly contacting the patient's body surface to cause scratches or punctures to the patient. The outer contour line of the electrode unit 520 is Fig.10It is indicated by dotted lines for ease of understanding. For specific details, please refer to the relevant description in the first embodiment, which will not be repeated here. Slightly different is that the width of the portion of the adhesive 53 that exceeds the edge of the electrode unit 520 does not exceed 2 mm. In addition to increasing the protection of the adhesive 53 to the electrode unit 520, it can also allow a larger area of ​​spacing between the electrode units 520 to facilitate the attachment and replacement of the adhesive 53 when it is deformed or damaged, while increasing the heat dissipation area of ​​the electrode array 52 and improving the heat dissipation efficiency of each electrode unit 520 of the electrode patch 50.

[0059] The above is only a preferred implementation mode of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An electrode patch, comprising an electrode array and a plurality of adhesive members, wherein the electrode array is provided with a plurality of electrode units, a plurality of connecting portions and a wiring portion for connecting two adjacent electrode units, characterized in that: The plurality of adhesive members are covered on the plurality of electrode units in a one-to-one correspondence, and the electrode units are covered by the adhesive members on one side facing the adhesive member and on the surrounding side thereof.

2. The electrode patch according to claim 1, characterized in that: The electrode unit includes a main body, a conductive sheet disposed on the main body, and a dielectric layer covering the conductive sheet. The area enclosed by the outer contour of the dielectric layer is larger than the area enclosed by the outer contour of the conductive sheet.

3. The electrode patch according to claim 2, characterized in that: The electrode unit further includes an alloy layer covering the dielectric layer.

4. The electrode patch according to claim 2, characterized in that: The electrode unit further includes an insulating layer which presses the conductive sheet onto the main body and allows the conductive sheet to be exposed, and the dielectric layer covers a region where the conductive sheet is exposed from the insulating layer.

5. The electrode patch according to claim 3, characterized in that: The main body is provided with a plurality of through holes arranged around the periphery of the conductive sheet.

6. The electrode patch according to claim 5, characterized in that: The dielectric layer and / or the alloy layer covers the inner wall of the through hole.

7. The electrode patch according to claim 1, characterized in that: The portion of the adhesive member that exceeds the edge of the corresponding electrode unit has a width dimension that does not exceed 0.5 mm.

8. The electrode patch according to claim 1, characterized in that: The electrode array includes a left part and a right part which are bilaterally symmetrical, and each of the left part and the right part is provided with a plurality of electrode units with different shapes.

9. The electrode patch according to claim 8, characterized in that: The portion of the adhesive member that exceeds the edge of the corresponding electrode unit has a width dimension that does not exceed 2 mm.

10. An electrode patch, comprising an electrode array and a plurality of adhesive members, wherein the electrode array comprises a flexible circuit board on which a plurality of spaced conductive sheets are provided and a plurality of dielectric regions provided on the flexible circuit board, wherein the plurality of dielectric regions are provided on the plurality of conductive sheets in a one-to-one correspondence, and wherein: The plurality of adhesives are covered in a one-to-one correspondence on the plurality of electrode units consisting of the portion of the flexible circuit board where the conductive sheet is arranged, the conductive sheet and the dielectric area, and the electrode units are surrounded by the corresponding adhesives and the side facing the adhesives is covered by the adhesives.

11. The electrode patch according to claim 10, characterized in that: The outer contour of the adhesive piece is located outside the outer contour of the electrode unit, and the portion of the adhesive piece that exceeds the edge of the corresponding electrode unit has a width dimension not exceeding 0.5 mm.

12. The electrode patch according to claim 10, characterized in that: The outer contour of the adhesive piece is located outside the outer contour of the electrode unit, and the portion of the adhesive piece that exceeds the edge of the corresponding electrode unit has a width dimension not exceeding 2 mm.

13. The electrode patch according to any one of claims 10 to 12, characterized in that: The flexible circuit board is provided with a plurality of through holes surrounding the circumference of the conductive sheet, and the dielectric region covers the inner walls of the through holes.

14. The electrode patch according to any one of claims 10 to 12, characterized in that: The outer contour of the dielectric region has an area larger than the outer contour of the conductive sheet.

15. The electrode patch according to any one of claims 10 to 12, characterized in that: The flexible circuit board is also provided with an insulating layer, the insulating layer presses the conductive sheet to the corresponding position of the flexible circuit board, and the dielectric area is laid on the insulating layer and the area where the conductive sheet is exposed from the insulating layer.

16. The electrode patch according to any one of claims 10 to 12, characterized in that: The adhesive member covers the dielectric area.

17. A tumor electric field treatment system, characterized in that: The invention comprises an electric field generator, an adapter and a plurality of electrode patches arranged in pairs as claimed in any one of claims 1 to 16.

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