Electric field therapy system and electrode patch therefor

Abstract

Provided in the present application are an electric field therapy system and an electrode patch. The electrode patch comprises a backing, an electrode array and several adhesive members, wherein the electrode array comprises several electrode units and several connecting portions connecting two adjacent electrode units; the front side of each electrode unit is provided with a conductive sheet, the front side of each connecting portion is provided with an AC wire, and the AC wire is connected to and in conduction with the conductive sheets of the electrode units that are respectively located on two ends of the connecting portion; and the several electrode units are divided into a plurality of electrode unit groups, each electrode unit group is jointly formed by two adjacent electrode units and the connecting portion connecting the two electrode units, the electrode array further comprises dielectric layers disposed corresponding to the electrode unit groups, and each dielectric layer directly covers and conductively connects the two conductive sheets in the respective electrode unit groups and the respective AC wire. In the electrode patch of the present application, every two adjacent electrode units are formed into an electrode unit group by means of a dielectric layer, and when an electrical performance test is performed on the electrode patch, the test is performed in units of electrode unit groups, so that the test efficiency can be improved.

Description

Electrical field therapy system and electrode patch thereof TECHNICAL FIELD

[0001] The present application relates to an electrical field therapy system and electrode patch thereof. BACKGROUND

[0002] Intermediate frequency alternating electrical field therapy has been proved to be an effective method for tumor treatment, which can interfere with the mitotic process of cancer cells and induce cancer cell apoptosis, and can be used for treating tumors. An electrical field therapy system generally includes an electrical field generator, an adapter, and multiple pairs of electrode patches. The electrical field generator generates an alternating electrical signal, and transmits the alternating electrical signal to the electrode patches through the adapter. The electrode patches are attached to the surfaces on opposite sides of the patient's skin in pairs, and an alternating current signal is applied between each pair of electrode patches to non-invasively apply a tumor treatment electrical field to the target area.

[0003] Chinese patent application publication No. 114099958 discloses an electrode patch, which includes an electrode array, twenty electrode units arranged on a flexible circuit board, and a temperature sensor selectively arranged on the flexible circuit board for detecting the temperature at the attachment position of the corresponding electrode unit. The flexible circuit board is provided with a plurality of conductive traces, including an AC line for transmitting an alternating electrical signal, a ground line electrically connected to the ground terminals of all temperature sensors, and a plurality of signal lines electrically connected to the signal terminals of each temperature sensor, respectively. However, signal crosstalk may exist between the signal lines and the AC line, and between the signal lines and the ground line, which may affect the temperature measurement accuracy and the transmission of the alternating electrical signal.

[0004] During the qualification test of the electrode patch when it is shipped, the resistance and capacitance of each electrode unit need to be detected. Since the number of electrode units of the electrode patch is large, the test data is also large, and the test efficiency is low. In addition, due to hardware limitations, the electrode patch can only be arranged with a maximum of eight temperature sensors, but these eight temperature sensors are difficult to reflect the temperature of each electrode unit.

[0005] Therefore, it is necessary to improve the existing electrical field therapy system and electrode patch thereof. SUMMARY

[0006] One object of the present application is to provide an electrode patch that can improve the detection efficiency of electrical performance detection.

[0007] A second object of the present application is to provide an electrode patch that can improve the efficiency of temperature detection and reduce the wiring difficulty.

[0008] A third object of the present application is to provide an electrode patch that can slow down the heat transfer of the electrode patch to the patient.

[0009] A fourth object of the present invention is an electric field therapy system.

[0010] To achieve the above object, the present invention provides an electrode patch, comprising a backing, an electrode array attached to the backing, and a plurality of adhesive members attached to the electrode array, the electrode array comprising a plurality of electrode units and a plurality of connecting portions connecting adjacent two electrode units, the plurality of electrode units being arranged in multiple rows and multiple columns, each row comprising two adjacent electrode units and a connecting portion connecting the two electrode units, each electrode unit having a conductive sheet on its front surface, and each connecting portion having an AC wire on its front surface, the AC wire being connected to and conducting through the conductive sheet of the electrode unit at both ends of the connecting portion; the electrode array further comprising a dielectric layer corresponding to each electrode unit group, the dielectric layer directly covering and connecting two conductive sheets and an AC wire in the corresponding electrode unit group.

[0011] Further, the electrode array further comprises an insulating layer on the conductive sheet, the insulating layer exposing the conductive sheet so that the conductive sheet is in direct contact with the dielectric layer.

[0012] Further, the insulating layer is also provided on the connecting portion between the two electrode units of the electrode unit group, the insulating layer exposing the AC wire so that the AC wire is in direct contact with the dielectric layer, and the dielectric layer is provided on the insulating layer.

[0013] Further, the dielectric layer forms a plurality of disconnected intervals on the front surface of the connecting portion between a plurality of electrode unit groups.

[0014] Further, the electrode array further comprises an alloy layer, the alloy layer being provided on the dielectric layer corresponding to each electrode unit group, and the adhesive member being directly provided on the alloy layer.

[0015] Further, at most one of the two electrode units in the electrode unit group is provided with a temperature sensor.

[0016] Further, the electrode unit group comprises a peripheral electrode unit group located at the periphery of the electrode array and a central electrode unit group surrounded by the peripheral electrode unit group, and the temperature sensor is provided on a corresponding electrode unit in the peripheral electrode unit group.

[0017] Further, the temperature sensor is provided with a ground terminal and a signal terminal, the electrode array is provided with a substrate and a plurality of conductive traces arranged on the front surface of the substrate, the conductive traces include a ground line electrically connected with the ground terminal, a temperature measuring line electrically connected with the signal terminal, and the AC line electrically connecting all the conductive traces, the ground line and the AC line are located on the front surface of the substrate, and the temperature measuring line is located on the back surface of the substrate.

[0018] Further, the electrode array further comprises a cover film, and the cover film fixes all the temperature measuring lines to the back surface of the substrate.

[0019] To achieve the above object, the application further provides an electrode patch, which comprises a backing, an electrode array attached to the backing, and a plurality of adhesive members attached to the electrode array, the electrode array is provided with a plurality of electrode units and a plurality of connecting portions connecting adjacent two electrode units, the plurality of electrode units are arranged in multiple rows and multiple columns, adjacent two electrode units in each row and the connecting portion connecting the two electrode units constitute an electrode unit group, the electrode array comprises a plurality of peripheral electrode unit groups located at the periphery of the electrode array and a plurality of central electrode unit groups or a plurality of central electrode units surrounded by the plurality of peripheral electrode unit groups, the temperatures of two electrode units in each electrode unit group are substantially the same; the electrode array further comprises a temperature sensor arranged only in the peripheral electrode unit group, and each peripheral electrode unit group is provided with only one temperature sensor.

[0020] Further, the temperature sensor is arranged on one electrode unit close to the center of the electrode array in the corresponding peripheral electrode unit group.

[0021] Further, the electrode array comprises twenty electrode units, four electrode units are arranged in the first row and the fourth row respectively, six electrode units are arranged in the second row and the third row respectively, the six electrode units in the second row and the third row are one-to-one corresponding and arranged in six columns, and the four electrode units in the first row and the fourth row are arranged in the middle four columns respectively; the twenty electrode units constitute two central electrode unit groups and eight peripheral electrode unit groups respectively, and the electrode array is provided with eight temperature sensors arranged in the eight peripheral electrode unit groups respectively.

[0022] Further, the eight temperature sensors are arranged in the first row third column, the first row fourth column, the second row second column, the second row fifth column, the third row second column, the third row fifth column, the fourth row third column, and the fourth row fourth column of the electrode array respectively.

[0023] Further, the connecting part comprises weft connecting parts arranged along the row direction and warp connecting parts arranged along the column direction, the weft connecting parts comprise first weft connecting parts connecting two electrode units in each electrode unit group, second weft connecting parts connecting two adjacent electrode units in two adjacent peripheral electrode unit groups, and third weft connecting parts connecting one electrode unit in the peripheral electrode unit group and one electrode unit in the central electrode unit group, the length of the third weft connecting part is shorter than the length of the first and second weft connecting parts.

[0024] Further, the first weft connecting part and the second weft connecting part have the same length.

[0025] Further, the electrode unit is provided with a conductive sheet, the connecting part is provided with an AC line, and two ends of the AC line are respectively electrically connected with the corresponding conductive sheet.

[0026] Further, the electrode array comprises a dielectric layer, and the dielectric layer is arranged corresponding to each electrode unit group in a manner of directly covering and connecting two corresponding conductive sheets and the AC line in each electrode unit group.

[0027] Further, the electrode array further comprises an alloy layer, the alloy layer covers the dielectric layer, and the adhesive member is attached to the alloy layer.

[0028] To achieve the above-mentioned purpose, the present application further provides an electrode patch, comprising a backing, an electrode array attached to the backing, and a plurality of adhesive members attached to the electrode array, the electrode array comprises a plurality of electrode units arranged in multiple rows and multiple columns, connecting parts connecting adjacent two electrode units, and wiring parts for external connection of wires, and each of the electrode units comprises a main body part, each of the connecting parts and the wiring parts comprises a connecting strip, each of the main body parts and the connecting strips jointly form a substrate, a conductive layer is arranged on the front surface of the substrate, part of the conductive layer and part of the substrate are arranged with an insulating layer, and a dielectric layer is arranged on the insulating layer, wherein the conductive layer comprises a plurality of conductive sheets arranged in a spaced manner on the main body part, the conductive sheets are exposed to the insulating layer and in contact with the dielectric layer.

[0029] Further, the electrode array further comprises an alloy layer arranged on the dielectric layer, and the adhesive member is attached to the alloy layer.

[0030] Further, the electrode array comprises a plurality of conductive traces, and the electrode array further comprises a cover film arranged on the back surface of the substrate, and part of the conductive traces are arranged on the back surface of the substrate by being pressed by the cover film.

[0031] Further, the conductive sheet is arranged on the front surface of each of the main body parts, the conductive sheet and the main body part are circular and arranged in a concentric manner, the outer contour of the conductive sheet is smaller than the contour of the main body part, the insulating layer covers the conductive sheet and the main body part, and the insulating layer is provided with a hollow area exposing the conductive sheet.

[0032] Further, the conductive sheet is arranged on the front surface of each of the main body parts, the conductive sheet and the main body part are circular and arranged in a concentric manner, the outer contour of the conductive sheet is smaller than the contour of the main body part, the insulating layer covers the conductive sheet and the main body part, and the insulating layer is provided with a hollow area exposing the conductive sheet.

[0033] Further, the outer circular contour of the annular insulating layer is the same as the outer circular contour of the main body part, the inner circular contour of the annular insulating layer is smaller than the outer circular contour of the conductive sheet, and the outer circular contour of the circular insulating layer is larger than the outer circular contour of the opening of the conductive sheet.

[0034] Further, the conductive sheet is arranged on the front surface of each of the main body parts, the conductive sheet and the main body part are circular and arranged in a concentric manner, the outer contour of the conductive sheet is smaller than the contour of the main body part, the insulating layer covers the conductive sheet and the main body part, and the insulating layer is provided with a hollow area exposing the conductive sheet.

[0035] Further, the plurality of electrode units are arranged in four rows and six columns, adjacent two electrode units in the same row are connected through the corresponding connecting parts, adjacent two electrode units in the third and fourth columns in the middle are connected through the corresponding connecting parts, and adjacent two electrode units in other columns are arranged in a disconnected manner.

[0036] Further, the insulating layer is arranged on the substrate through a hot-pressing adhesion process.

[0037] To achieve the above-mentioned purpose, the application further provides an electric field treatment system, which comprises an electric field generator and the electrode patch.

[0038] The electric field treatment system and the electrode patch of the application form an electrode unit group by the dielectric layer for each two adjacent electrode units, and the electrode patch is detected in units of each electrode unit group, so that the detection efficiency can be improved. The temperature sensor is reasonably arranged, a small amount of temperature sensors can be used to detect the temperature of a large number of electrode units, the detection efficiency is improved, and the wiring difficulty is reduced. The insulating layer is laid on the conductive layer, which can reduce the heat transfer from the conductive layer to the dielectric layer and slow down the discomfort caused by the electrode patch to the patient's body surface.

[0039] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application, as claimed. BRIEF DESCRIPTION OF DRAWINGS

[0040] FIG. 1 is a block diagram of an electric field therapy system according to one embodiment of the present application;

[0041] FIG. 2 is a plan view of an electrode patch according to one embodiment of the present application;

[0042] FIG. 3 is a plan view of a first embodiment of an electrode array of the electrode patch of FIG. 2;

[0043] FIG. 4 is similar to FIG. 3 with the addition of dashed lines to illustrate groups of electrode elements;

[0044] FIG. 5 is a wiring diagram of the ground lines of the electrode array of FIG. 3, with the insulating layer, dielectric layer, and alloy layer not shown, and with the AC lines not shown;

[0045] FIG. 6 is a wiring diagram of the temperature sensing lines of the electrode array of FIG. 3, with the cover film not shown;

[0046] FIG. 7 is a wiring diagram of the AC lines of the electrode array of FIG. 3, with the insulating layer, dielectric layer, and alloy layer not shown, and with the ground lines not shown;

[0047] FIG. 8 is another plan view of the electrode array of FIG. 3, with the dielectric layer and alloy layer not shown;

[0048] FIG. 9 is a close-up view of area A of FIG. 8;

[0049] FIG. 10 is a cross-sectional view taken along line B-B of FIG. 3;

[0050] FIG. 11 is a cross-sectional view taken along line C-C of FIG. 3;

[0051] FIG. 12 is a cross-sectional view taken along line D-D of FIG. 3;

[0052] FIG. 13 is a cross-sectional view taken along line E-E of FIG. 3;

[0053] FIG. 14 is a plan view of a second embodiment of an electrode array according to the present application;

[0054] FIG. 15 is another plan view of the electrode array of FIG. 14, with the dielectric layer and alloy layer removed;

[0055] FIG. 16 is a wiring diagram of the AC lines and ground lines of the electrode array of FIG. 14, with the dielectric layer, alloy layer, and temperature sensors removed, and with the conductive traces under the insulating layer shown in dashed lines;

[0056] BRIEF DESCRIPTION OF DRAWINGS:

[0057] Electric field therapy system 100, electric field generator 10, adapter 20, electrode patch 30, backing 31, vent 311, notch 312, electrode array 32, 32', temperature sensor 321, 321', ground terminal 3211, signal terminal 3212, lead 3213, connection portion 322, 322', longitudinal connection portion 3221, 3221', latitudinal connection portion 3222, 3222', first latitudinal connection portion 3222A, 3222A', second latitudinal connection portion 3222B, 3222B', third latitudinal connection portion 3222C, wiring portion 323, 323', gold finger 3231, 3231', first open space 301, second open space 302, third open space 303, fourth open space 304, fifth open space 305, sixth open space 306, substrate 325, 325', main body portion 3250, 3250', connecting strip 3251, 3251', ground line 3252, 3252', temperature measuring line 3253, AC line 3254, 3254', reinforcing plate 326, adhesive 33, electrode unit 320, 320', C1-C20, C1'-C20', conductive sheet 342, 342', opening 3421, sealant 343, ground pad 344, 344', signal pad 345, 345', insulating layer 346, 346', circular insulating layer 3461, annular insulating layer 3462, insulating tape 3463, inner insulating strip 3464, outer insulating strip 3465, dielectric layer 347, alloy layer 348, 348', cover film 349, heat dissipation hole 340, interval D. DETAILED DESCRIPTION

[0058] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, the same numbers are used to indicate the same or similar elements, unless otherwise represented. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of devices, systems, apparatuses and methods consistent with some aspects of the present application.

[0059] First embodiment:

[0060] Referring to FIG. 1, the electric field therapy system 100 includes an electric field generator 10, an adapter 20, and a plurality of pairs of electrode patches 30. The adapter 20 electrically connects the electric field generator 10 and each of the electrode patches 30. The electric field generator 10 generates an alternating current signal required for tumor treatment, 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 patches 30. The electrode patches 30 are attached to the body surface of the patient corresponding to the tumor area, and the alternating current signal is applied to the tumor area of the patient for electric field therapy of the tumor.

[0061] Referring to FIGS. 2-4, the electrode patch 30 includes a backing 31, an electrode array 32 attached to a front side of the backing 31, and a plurality of adhesive pieces 33 attached to a front side of the electrode array 32, wherein the front side of each of the backing 31, the electrode array 32, and the adhesive pieces 33 is the side that faces the patient's skin. The electrode array 32 includes twenty electrode units 320 arranged in a spaced-apart manner, and eight temperature sensors 321 selectively arranged on eight of the electrode units 320, the electrode units 320 apply an alternating current signal to the patient, and the temperature sensors 321 can feed back the temperature of the corresponding electrode units 320 to prevent the heat generated on the electrode units 320 from causing a burn to the patient's skin when the alternating current signal is applied. The adhesive pieces 33 are arranged in a sheet shape, and in use, the front side of the adhesive pieces 33 is attached to the patient's skin at a position corresponding to the tumor, the adhesive pieces 33 are conductive hydrogels that can enhance the comfort of the electrode units 320 attached to the patient's skin, and at the same time, can also serve as a conductive medium for the alternating current signal passing through the electrode units 320 to be applied to the tumor site of the patient.

[0062] The electrode array 32 includes a connecting portion 322 connecting two adjacent electrode units 320, and a wire portion 323 extending outward from one of the connecting portions 322, the wire portion 323 is welded with a wire (not shown) for electrically connecting the electrode patch 30 to the adapter 20 to receive the alternating current signal from the electric field generator 10 and transmit the detection signal of each temperature sensor 321 to the electric field generator 10. A plurality of gold fingers 3231 are provided on the wire portion 323, the plurality of gold fingers 3231 are arranged on the front and back sides of the wire portion 323 to reduce the width dimension of the wire portion 323, and a reasonable spacing is provided between each of the gold fingers 3231 to avoid short circuit or signal coupling caused by being too close.

[0063] The twenty electrode units 320 are arranged in a substantially four-row and six-column array, four electrode units 320 are arranged in each of the first row and the fourth row, six electrode units 320 are arranged in each of the second row and the third row, the six electrode units 320 in each of the second row and the third row are one-to-one corresponding and arranged in six columns, and the four electrode units 320 in each of the first row and the fourth row are arranged in the middle four columns. From left to right, the four electrode units 320 in the first row are defined as C1, C2, C3, and C4, the six electrode units 320 in the second row are defined as C5, C6, C7, C8, C9, and C10, the six electrode units 320 in the third row are defined as C11, C12, C13, C14, C15, and C16, and the four electrode units 320 in the fourth row are defined as C17, C18, C19, and C20.

[0064] The plurality of electrode units 320 in the same row are not distributed in a straight line, but are distributed in an arc shape. The electrode units 320 in the first and second rows are distributed on an arc with both ends raised upward, and the electrode units 320 in the third and fourth rows are distributed on an arc with both ends raised downward. Specifically, the arc in which the electrode units 320 in the first and fourth rows are located is an arc of a circle with a radius of about 193 mm and an arc length of about 101 mm. The arc in which the electrode units 320 in the second and third rows are located is an arc of a circle with a radius of about 363 mm and an arc length of about 160 mm.

[0065] The electrode patch 30 is applied to the patient with its front surface facing the patient. The part of the backing 31 not covered by the electrode array 32 is applied to the surface of the patient. The backing 31 is usually made of a breathable material such as a woven fabric, a non-woven fabric, and a microporous membrane. The shape of the backing 31 is generally similar to the overall outer contour shape of the electrode array 32, but the area of the backing 31 is larger than the area of the overall outer contour shape of the electrode array 32. Six ventilation holes 311 are formed in the backing 31. Three ventilation holes 311 are formed between the first row of electrode units 320 and the second row of electrode units 320. Three ventilation holes 311 are also formed between the third row of electrode units 320 and the fourth row of electrode units 320, so as to facilitate heat dissipation and perspiration of the surface of the patient to which the electrode patch 30 is applied. The edge of the backing 31 is also provided with a notch 312 to avoid the wire connection part 323. A plurality of gold fingers 3231 are arranged on the wire connection part 323. The notch 312 is used to avoid the plurality of gold fingers 3231, so as to facilitate welding of the wire connection part 323 and the lead wire (not shown).

[0066] The structure of the electrode array 32 will be described below with reference to the accompanying drawings.

[0067] Referring to FIG. 3 and FIG. 4, the connection portions 322 of the electrode array 32 include longitudinal connection portions 3221 extending in the longitudinal direction (i.e. in the column direction) and latitudinal connection portions 3222 extending in the latitudinal direction (i.e. in the row direction). Any two adjacent electrode units 320 in the third column are connected by a longitudinal connection portion 3221, and any two adjacent electrode units 320 in the fourth column are also connected by a longitudinal connection portion 3221. The adjacent electrode units 320 in other columns are arranged in a disconnected manner, i.e. no connection portion 322 is arranged, and the electrode units 320 in other columns are free in the longitudinal direction and have a certain range of free movement. Any two adjacent electrode units 320 in each row are connected by a latitudinal connection portion 3222, and the wiring portion 323 extends outward from the latitudinal connection portion 3222 located in the middle of the fourth row. Since the adjacent electrode units 320 in the first column, the second column, the fifth column and the sixth column are arranged in a disconnected manner and do not have longitudinal connection portions 3221, a plurality of open spaces 301, 302, 303, 304, 305, 306 are formed between the twenty electrode units 320, including a first open space 301 surrounded by the electrode units C1, C2, C5, C6 and C7, a second open space 302 surrounded by the electrode units C3, C4, C8, C9 and C10, a third open space 303 surrounded by the electrode units C5, C6, C7, C11, C12 and C13, a fourth open space 304 surrounded by the electrode units C8, C9, C10, C14, C15 and C16, a fifth open space 305 surrounded by the electrode units C11, C12, C13, C17 and C18, and a sixth open space 306 surrounded by the electrode units C14, C15, C16, C19 and C20. Each of the open spaces 301, 302, 303, 304, 305, 306 is in communication with the external space, and the electrode units C1, C4, C5, C6, C9, C10, C11, C12, C15, C16, C17 and C20 located at the periphery are not connected to any longitudinal connection portion 3221 in the column direction, so these electrode units 320 have a certain range of free movement and can be appropriately adjusted in position. Therefore, when the electrode patch 30 is attached to the chest and abdomen or the waist, the adhesion is better, and the problems of wrinkles and buckling around the electrode patch 30 and poor adhesion can be avoided.

[0068] Continuing to refer to FIG. 4, the twenty electrode units 320 are arranged in ten electrode unit groups, each of which is formed by two electrode units 320 adjacent to each other along a row. Specifically, the first electrode unit group is formed by the two electrode units C1 and C2 in the first row and the weft connecting portion 3222 therebetween, the second electrode unit group is formed by the two electrode units C3 and C4 in the first row and the weft connecting portion 3222 therebetween, the third electrode unit group is formed by the two electrode units C5 and C6 in the second row and the weft connecting portion 3222 therebetween, the fourth electrode unit group is formed by the two electrode units C7 and C8 in the second row and the weft connecting portion 3222 therebetween, the fifth electrode unit group is formed by the two electrode units C9 and C10 in the second row and the weft connecting portion 3222 therebetween, the sixth electrode unit group is formed by the two electrode units C11 and C12 in the third row and the weft connecting portion 3222 therebetween, the seventh electrode unit group is formed by the two electrode units C13 and C14 in the third row and the weft connecting portion 3222 therebetween, the eighth electrode unit group is formed by the two electrode units C15 and C16 in the third row and the weft connecting portion 3222 therebetween, the ninth electrode unit group is formed by the two electrode units C17 and C18 in the fourth row and the weft connecting portion 3222 therebetween, and the tenth electrode unit group is formed by the two electrode units C19 and C20 in the fourth row and the weft connecting portion 3222 therebetween.

[0069] Continuing to refer to FIGS. 3 and 4, of the ten electrode unit groups of the electrode patch 30, the fourth electrode unit group (C7, C8) and the seventh electrode unit group (C13, C14) are located at the center of the electrode array 32 and are defined as the center electrode unit group, and the other eight electrode unit groups are arranged around the periphery of the center electrode unit group and are defined as the peripheral electrode unit groups. The two electrode units 320 in a single electrode unit group have consistent performance, consistent heat generation, and thus substantially consistent temperature, and the specific reasons will be described later. The electrode patch 30 is provided with eight temperature sensors 321, and in order to comprehensively detect the temperature at each electrode unit 320 in the electrode patch 30, one temperature sensor 321 is arranged in each of the eight peripheral electrode unit groups and is arranged on the electrode unit 320 close to the center of the electrode patch 30 in the peripheral electrode unit group, so that the temperature sensor 321 is closer to the fourth electrode unit group (C7, C8) or the seventh electrode unit group (C13, C14). Specifically, the eight temperature sensors 321 are arranged on the electrode units C2, C3, C6, C9, C12, C15, C18, and C19, respectively, and can directly detect the temperature of each peripheral electrode unit group.

[0070] The plurality of weft connections 3222 of the electrode array 32 includes a plurality of first weft connections 3222A, a plurality of second weft connections 3222B and a plurality of third weft connections 3222C. The first weft connections 3222A connect two electrode units 320 within each electrode unit group. The second weft connections 3222B connect two adjacent electrode units 320 in two adjacent peripheral electrode unit groups. The third weft connections 3222C connect two adjacent electrode units 320 in both a peripheral electrode unit group and an adjacent central electrode unit group. The length of the first weft connections 3222A is equal to the length of the second weft connections 3222B, but greater than the length of the third weft connections 3222C. The electrode units C7, C8, C13, C14 in the central electrode unit group are connected to the electrode units C6, C9, C12, C15 in the peripheral electrode unit groups and adjacent thereto by the shorter third weft connections 3222C, so that each electrode unit in the central electrode unit group is closer to the temperature of the other peripheral electrode unit groups adjacent thereto in the weft direction; therefore, the central electrode unit group does not need to be provided with temperature sensors 321. The temperature of the fourth electrode unit group (C7, C8) and the seventh electrode unit group (C13, C14) can refer to the temperature of the electrode unit groups adjacent thereto in the row direction. That is, the temperature of the fourth electrode unit group (C7, C8) can refer to the temperature of the third electrode unit group or the fifth electrode unit group, and the temperature of the seventh electrode unit group (C13, C14) can refer to the temperature of the sixth electrode unit group or the eighth electrode unit group. With such a reasonable arrangement, the eight temperature sensors 321 can monitor the temperature of all twenty electrode units 320.

[0071] Referring to FIG. 5 and FIG. 11, the electrode array 32 includes a flexible substrate 325 in a sheet shape, which is a supporting base plate and is provided in each electrode unit 320, each connecting portion 322 and the wiring portion 323. The electrode unit 320, the connecting portion 322 and the wiring portion 323 are further provided with other structures on the front surface and / or the bottom surface of the substrate 325, which will be described later. The thickness of the substrate 325 is 0.1 mm-0.3 mm, and the material is polyimide or polyester film, which has the characteristics of light weight, thin thickness, bendable, high flexibility, etc. For the convenience of description, the part of the substrate 325 corresponding to each electrode unit 320 is defined as a main body portion 3250, and the part of the substrate 325 corresponding to each connecting portion 322 and the wiring portion 323 is defined as a connecting strip 3251. The main body portion 3250 is provided in a circular shape, and the electrode unit 320 is provided with a conductive sheet 342 on the main body portion 3250. The conductive sheet 342 is provided in a circular ring shape, and has an opening 3421 in the center. The thickness of the conductive sheet 342 is 10 μm-50 μm, and the conductive sheet 342 is concentrically provided with the main body portion 3250. The outer contour of the conductive sheet 342 is smaller than the outer contour of the main body portion 3250.

[0072] The opening 3421 of the conductive sheet 342 exposes the front surface of the corresponding main body portion 3250, and the temperature sensor 321 is placed in the opening 3421 of the corresponding electrode unit 320 and fixed to the main body portion 3250. The electrode unit 320 further encapsulates the temperature sensor 321 in the opening 3421 of the conductive sheet 342 by the sealing glue 343. The temperature sensor 321 can be a negative temperature coefficient thermistor. The sealing glue 343 can use a curing agent with low expansion coefficient, low water absorption and low fluidity, which prevents the sealing glue 343 from flowing out of the opening 3421 and affecting the surface flatness of the conductive sheet 342 when the glue is injected. The sealing glue 343 can be a curing sealing glue with low fluidity and biological safety, and is cured and formed by high temperature or specific wavelength light. The formed sealing glue 343 has excellent shock resistance and electrical corrosion resistance, and the material is preferably modified epoxy resin.

[0073] The main body part 3250 of the electrode unit 320 is provided with a ground pad 344 and a signal pad 345 in the opening 3421 of the conductive sheet 342, the bottom surface of the temperature sensor 321 is provided with a ground end 3211, and the top surface of the temperature sensor 321 is provided with a signal end 3212. The ground end 3211 is welded to the ground pad 344, and the signal end 3212 is electrically connected to the signal pad 345 through a lead wire 3213. Optionally, the electrode unit 320 is provided with a reinforcing plate 326 at the position corresponding to the temperature sensor 321 on the back surface of the main body part 3250. The reinforcing plate 326 can support the main body part 3250, facilitating the surface mounting process of the temperature sensor 321 on the main body part 3250. The reinforcing plate 326 is preferably polyimide, with a thickness of not more than 100 μm and a projection area not less than that of the temperature sensor 321. The reinforcing plate 326 is not necessarily provided, and the thickness of the main body part 3250 (i.e. the substrate 325) can be appropriately increased to reinforce the structure.

[0074] Referring to FIGS. 5 to 7, the electrode array 32 is provided with a plurality of conductive traces (not numbered) on the substrate 325. The conductive traces (not numbered) include a ground line 3252 for transmitting a ground signal, eight temperature measuring lines 3253 for transmitting a direct current signal, and a plurality of AC lines 3254 for transmitting an alternating current signal. The ground line 3252 is used for electrical connection with all the ground pads 344. The plurality of temperature measuring lines 3253 are respectively and correspondingly electrically connected to the signal pads 345. The plurality of AC lines 3254 are electrically connected to all the electrode units 320 for transmitting the alternating current signal to each electrode unit 320. The plurality of gold fingers 3231 of the aforementioned wiring part 323 totals eleven. One gold finger 3231 is connected to the ground line 3252. Eight gold fingers 3231 are respectively and correspondingly connected to the plurality of temperature measuring lines 3253. One gold finger 3231 is connected to the AC line 3254. Another gold finger 3231 is connected to the shielding layer (not shown) of the lead wire (not shown) and grounded, for electromagnetic shielding and preventing signal interference.

[0075] FIG. 5 shows a wiring diagram of the ground line 3252. The ground line 3252 is distributed on the front surface side of the substrate 325. The ground line 3252 is branched from one gold finger 3231 of the wiring part 323. The ground line 3252 extends along the corresponding warp connecting part 3221 and weft connecting part 3222 and is electrically connected to the ground pads 344 located at the centers of the eight electrode units 3202, C3, C6, C9, C12, C15, C18, and C19. The gold finger 3231 connected to the ground line 3252 and the gold finger 3231 of the shielding layer (not shown) are electrically connected and located on the front surface of the wiring part 323.

[0076] Figure 6 shows a wiring diagram of the temperature measuring lines 3253. Eight temperature measuring lines 3253 are arranged on the back side of the substrate 325. The temperature measuring lines 3253 are independent of each other and are respectively led out by a corresponding gold finger 3231 on the connection part 323. Each temperature measuring line 3253 extends along the column direction, or the row direction, or both the column direction and the row direction from the connection part 323, and then extends to the center of a corresponding one of the eight electrode units 320 (one of the eight electrode units C2, C3, C6, C9, C12, C15, C18, and C19) on which the temperature sensor 321 is arranged, and is electrically connected to a corresponding signal pad 345 on the front side of the substrate 325 after penetrating the substrate 325. The overall distribution of the temperature measuring lines 3253 is similar to that of the ground lines 3252. The eight gold fingers 3231 for leading the temperature measuring lines 3253 are respectively arranged on the front and back sides of the connection part 323.

[0077] Figure 7 shows a wiring diagram of the AC lines 3254 on the electrode patch 30. The AC lines 3254 are arranged on the front side of the substrate 325, and the gold fingers 3231 for leading the AC lines 3254 are arranged on the front side of the connection part 323. The AC lines 3254 are led out by a gold finger 3231 on the connection part 323 and are divided into multiple segments. In this embodiment, each connection part 322 is provided with an AC line 3254 to electrically connect the conductive sheets 342 of two adjacent electrode units 320. The AC lines 3254 are electrically connected to all the conductive sheets 342 to transmit an alternating current signal to all the conductive sheets 342.

[0078] Referring to Figures 5 and 7, on the front side of the substrate 325, the AC lines 3254 are arranged on each connection part 322, and the ground lines 3252 are arranged on some connection parts 322 and some main body parts 3250. Each main body part 3250 is provided with a conductive sheet 342, and some main body parts 3250 are further provided with a ground pad 344 and a signal pad 345. The AC lines 3254, the ground lines 3252, the conductive sheets 342, the ground pads 344, and the signal pads 345 are arranged on the same side of the substrate 325 and collectively form a conductive layer (not labeled) on the front side of the substrate 325. The conductive traces (not labeled) are arranged in this way, which reduces the difficulty of wiring.

[0079] Referring to FIGS. 8 and 9, after the conductive layer (not numbered) is completed, the electrode array 32 is laid on the substrate 325 and the conductive layer (not numbered) with an insulating layer 346, which covers or partially covers the main body part 3250, the connecting part 322, the wiring part 323, and the substrate 325 not covered by the conductive layer (not numbered), to form a solder mask layer of the substrate 325. The insulating layer 346 is laid on the front surface of the substrate 325 by a hot-press bonding process or a COB process (Chip On Board), and the thickness of the insulating layer 346 is 10 μm to 50 μm. The electrode array 32 further comprises a dielectric layer 347 (see FIG. 3) laid on the insulating layer 346 and the conductive layer (not numbered) not covered by the insulating layer 346. The insulating layer 346 can also serve as a heat insulation layer to reduce the heat transfer from the conductive layer (not numbered) to the dielectric layer 347 laid on the insulating layer 346, reduce the heat transfer from the electrode patch 30 to the patient's body surface during operation, and slow down the discomfort caused to the patient's body surface. FIGS. 5 and 7 show the schematic diagram of the electrode array 32 before the insulating layer 346 is laid, so as to clearly show the structure of the conductive layer. FIGS. 8 and 9 show the schematic diagram of the electrode array 32 after the insulating layer 346 is laid.

[0080] The insulating layer 346 covers the main body part 3250 and the first weft connecting part 3222A in each electrode unit group in a partially covering manner. The insulating layer 346 located on the main body part 3250 is arranged in a hub shape, including a circular insulating layer 3461 located at the center, an annular insulating layer 3462 located at the outer circle, and four insulating strips 3463 connecting the circular insulating layer 3461 and the annular insulating layer 3462. For the main body part 3250 provided with the ground pad 344 and the signal pad 345, the circular insulating layer 3461 needs to avoid the ground pad 344 and the signal pad 345 to avoid affecting the arrangement of the temperature sensor 321. The outer circle contour of the annular insulating layer 3462 is the same as the outer circle contour of the main body part 3250, the inner circle contour of the annular insulating layer 3462 is slightly smaller than the outer circle contour of the conductive sheet 342, and the outer circle contour of the circular insulating layer 3461 is slightly larger than the outer circle contour of the opening 3421 of the conductive sheet 342, so as to facilitate the insulating layer 346 to press the corresponding conductive sheet 342 on the corresponding main body part 3250, and prevent the inner and outer edges of the conductive sheet 342 from being warped. The circular insulating layer 3461 located at the center and the annular insulating layer 3462 located at the outer circle are separated by four insulating strips 3463 into four fan-shaped hollow areas (not numbered) to expose the conductive sheet 342 located under the insulating layer 346, so that the conductive sheet 342 is in direct contact with and conducts electricity with the dielectric layer 347 laid thereon.

[0081] The insulating layer 346 on the first weft connecting part 3222A in each electrode unit group is also partially coated on the conductive layer (not shown) to expose the corresponding AC wire 3254 and make the AC wire 3254 directly contact and conduct with the dielectric layer 347 laid thereon. The insulating layer 346 on the first weft connecting part 3222A in each electrode unit group includes an inner insulating strip 3464 between the two AC wires 3254 and outer insulating strips 3465 on the outer sides of the two AC wires 3254, the two ends of the inner insulating strip 3464 are connected with the corresponding insulating bands 3463 at the two ends thereof, and the two ends of the outer insulating strips 3465 are connected with the corresponding annular insulating layers 3462 at the two ends thereof. The insulating layer 346 on the first weft connecting part 3222A between each electrode unit group covers the ground wire 3252 and the AC wire 3254, so part of the ground wire 3252 and the AC wire 3254 are shown in dotted lines in FIG. 8.

[0082] The electrode unit 320 is uniformly provided with a plurality of heat dissipation holes 340 at the outer periphery thereof, the heat dissipation holes 340 avoid the connection between the electrode unit 320 and the corresponding connecting part 322. These heat dissipation holes 340 are annularly arranged on the outer side of the conductive sheet 342 and penetrate the substrate 325 and the insulating layer 346, so as to facilitate heat dissipation of the electrode unit 320.

[0083] Returning to FIGS. 3 and 4, the electrode array 32 in FIGS. 3 and 4 is in a state after the dielectric layer 347 is laid, the dielectric layer 347 can completely cover the conductive sheet 342 to prevent the conductive sheet 342 from directly contacting the human body to generate direct current conduction and affect the safety of the human body. The edge of the dielectric layer 347 does not exceed the outer contour of the substrate 325, so that the dielectric layer 347 can obtain complete support of the substrate 325. The dielectric layer 347 is a high-molecular dielectric layer with high dielectric constant and low dielectric loss, which is made of thin film material with non-fixed crystal direction, high flexibility and high toughness. In the present embodiment, the material of the dielectric layer 347 is a polymer with a dielectric constant not less than 20 and a dielectric strength not less than 40 V / μm, so as to avoid the dielectric layer 347 being broken down under normal applied voltage. The polymer is a polymer with relaxor ferroelectric behavior, which can be a polyvinyl fluoride-based polymer, P(VDF-TrFE-CTFE), P(VDF-TrFE-CFE) or P(VDF-TrFE-CFE-CTFE), and can be a polyamide composite material, such as a piperazine-biuret copolymer polyamide. The dielectric layer 347 can be formed on the surface of the conductive sheet 342 and the insulating layer 346 by means of evaporation, sputtering or ion plating gas phase deposition, or can be formed on the surface of the conductive sheet 342 and the insulating layer 346 by means of printing, spraying or casting. The thickness of the dielectric layer 347 is 3-10 μm. The inner wall of the heat dissipation hole 340 is also formed with a corresponding dielectric layer 347 to facilitate heat dissipation.

[0084] The dielectric layer 347 covers the insulating layer 346 of each electrode unit group and the conductive sheet 342 not covered by the insulating layer 346, and is discontinuously arranged between the electrode unit groups, i.e., the dielectric layer 347 is divided into a plurality of spaced regions, and the spacing D is formed between the front surfaces of the second weft connecting part 3222B and the third weft connecting part 3222C of each region. The dielectric layer 347 of a single region covers an electrode unit group including two electrode units 320 and the first weft connecting part 3222A, and the shape of the dielectric layer 347 of a single region is consistent with the outer contour of a single electrode unit group, directly covering the conductive sheet 342 of the two electrode units 320 and the AC line 3254 on the first weft connecting part 3222A of the corresponding electrode unit group; the dielectric layers 347 of different regions cover different electrode unit groups, and the dielectric layers 347 of different regions are spaced apart, i.e., the dielectric layer 347 is not arranged on all the second weft connecting parts 3222B, the third weft connecting parts 3222C and all the warp connecting parts 3221 in the electrode array 32. The dielectric layer 347 simultaneously covers and connects the conductive sheet 342 of the two electrode units 320 in the corresponding electrode unit group and the AC line 3254 therebetween, so that the two electrode units 320 simultaneously apply an alternating current signal. In this way, the twenty electrode units 320 can be divided into ten electrode unit groups, so that the performance parameters of each electrode unit group are the same, and the ten electrode unit groups can transmit alternating current signals in parallel. When the electrode patch 30 is subjected to electrical performance detection, each electrode unit group can be detected as a unit, the number of test data collection times can be reduced, and the detection efficiency can be improved.

[0085] The temperature of the two electrode units 320 in the same electrode unit group is substantially uniform, because the two conductive strips 342 connecting the two electrode units 320 are directly covered by the covering dielectric layer 347, and the alloy layer 348 (see FIG. 10) capable of fast heat conduction is further covered on the dielectric layer 347, so that the two electrode units 320 can quickly transfer heat to each other, and the temperature of the two electrode units 320 is substantially the same. Therefore, the temperature measured by the temperature sensor 321 arranged in one of the electrode units 320 in the same electrode unit group in the eight peripheral electrode unit groups can represent the temperature of the two electrode units 320 in the same electrode unit group. The electrode units 320 in the two center electrode unit groups are not provided with temperature sensors 321, but because the length of the third latitudinal connecting part 3222C is short, the temperature of the electrode units 320 in the center electrode unit groups is close to the temperature of the adjacent electrode units 320 in the peripheral electrode unit groups in the latitudinal direction. At the same time, the exposed AC wire 3254 is in direct contact with the dielectric layer 347, which increases the area of the conductive strip 342 in the electrode unit group and also increases the capacitance of the electrode unit group. The capacitances of the ten electrode unit groups are equal, which makes the heat generation of the ten electrode unit groups consistent, and thus it is easier to adjust the AC signal applied to the electrode patch 30 based on the temperature detected by the temperature sensor 321 when the electrode patch 30 is used for long-term tumor treatment, thereby avoiding the low temperature burns on the patient's body surface caused by the serious heat generation of the electrode units 320. It can be understood that the center electrode unit group can also be replaced by a single center electrode unit, and the temperature of the center electrode unit can be referred to the temperature of the peripheral electrode unit group beside it.

[0086] FIGS. 10 to 13 are cross-sectional views of different parts of the electrode array 32 in FIG. 3.

[0087] Referring to FIG. 10, the dielectric layer 347 is further coated with an alloy layer 348, which only covers the dielectric layer 347. The adhesive layer 33 is attached to the alloy layer 348. The alloy layer 348 is used as an auxiliary layer to increase the conductive performance between the dielectric layer 347 and the adhesive layer 33. The size of the alloy layer 348 is slightly smaller than that of the dielectric layer 347. The alloy layer 348 covers the inner wall of the heat dissipation hole 340 to improve the heat dissipation performance of the electrode unit 320. The material of the alloy layer 348 can be one or more of zinc-aluminum alloy, zinc-copper alloy, silver-titanium, or graphite. The alloy layer 348 can be deposited on the surface of the dielectric layer 347 by a vapor deposition method. The thickness of the alloy layer 348 is 3-10 nm. The alloy layer 348 is selectively provided and is not necessarily required. The substrate 325 further includes a cover film 349 which is integrally coated on the back surface of the substrate 325. As shown in FIG. 6, the eight temperature measurement lines 3253 provided on the back surface of the substrate 325 are all coated on the back surface of the substrate 325 through the cover film 349. These temperature measurement lines 3253 all penetrate the substrate 325 and are respectively electrically connected to the corresponding signal pads 345 provided on the front surface of the main body portion 3250 of the substrate 325. The front surface and the back surface of the wiring portion 323 are respectively covered by the insulating layer 346 and the cover film 349. The insulating layer 346 and the cover film 349 are respectively provided with corresponding windows (not labeled) corresponding to each gold finger 3231 on the wiring portion 323, so as to respectively weld each gold finger 3231 to the corresponding wire (not shown).

[0088] FIG. 10 is a cross-sectional view of an electrode unit 320 without a temperature sensor 321, which includes a main body portion 3250 of a substrate 325, a conductive sheet 342 provided on the front surface of the main body portion 3250, an insulating layer 346 covering part of the conductive sheet 342 and the main body portion 3250, a dielectric layer 347 covering the insulating layer 346 and the conductive sheet 342 exposed from the insulating layer 346, an alloy layer 348 covering the dielectric layer 347, and a cover film 349 covering the bottom surface of the main body portion 3250. It should be noted that the insulating layer 346 covers the front surface of the main body portion 3250 located in the hole 3421 of the conductive sheet 342. That is, the electrode unit 320 without the temperature sensor 321 includes the main body portion 3250, the conductive sheet 342, the insulating layer 346, the dielectric layer 347, the alloy layer 348, and the cover film 349.

[0089] Figure 11 is a cross-sectional view of an electrode unit 320 provided with a temperature sensor 321, including a main body 3250 of a substrate 325, a conductive sheet 342 disposed on the front surface of the main body 3250, a ground pad 344 and a signal pad 345 disposed on the front surface of the main body 3250 and located within the opening 3421 of the conductive sheet 342, an insulating layer 346 covering the conductive sheet 342 and the main body 3250, the temperature sensor 321 soldered to the ground pad 344 and fixedly sealed by the sealing glue 343, the dielectric layer 347 covering the insulating layer 346, the conductive sheet 342 exposed to the insulating layer 346 and the sealing glue 343, the alloy layer 348 covering the dielectric layer 347, the ground wire 3232 disposed on the front surface of the main body 3250, the temperature sensing wire 3253 disposed on the bottom surface of the main body 3250 (not shown in Figure 11 due to the position of the cross-section, please refer to Figures 5 and 7), the cover film 349 covering the bottom surface of the main body 3250 and the temperature sensing wire 3253, and the reinforcing plate 326 disposed below the cover film 349. It should be noted that the insulating layer 346 covers the front surface of the main body 3250 located within the opening 3421 of the conductive sheet 342, but avoids the ground pad 344 and the signal pad 345 so as to be soldered and connected with the temperature sensor 321, and the insulating layer 346 between the ground pad 344 and the signal pad 345 can avoid short circuit therebetween. The insulating layer 346 also exposes the conductive sheet 342 so as to be in contact and conductive with the dielectric layer 347. The sealing glue 343 is disposed after the completion of the laying of the insulating layer 346, and the insulating layer 346 can increase the adhesion of the sealing glue 343. That is, the electrode unit 320 provided with the temperature sensor 321 includes the main body 3250, the conductive sheet 342, the ground pad 344, the signal pad 345, the temperature sensor 321, the insulating layer 346, the dielectric layer 347, the alloy layer 348, the cover film 349, the ground wire 3252, the temperature sensing wire 3253 and the reinforcing plate 326.

[0090] Figure 12 shows a cross-sectional view of the first weft connection 3222A between two electrode units C9 and C10, which includes the substrate 325, two AC wires 3254 located on the front surface of the substrate 325, the insulating layer 346 avoiding the AC wires 3254 and covering the substrate 325, the dielectric layer 347 covering the insulating layer 346 and the AC wires 3254, the alloy layer 348 covering the dielectric layer 347, and the cover film 349 covering the bottom surface of the substrate 325, the AC wires 3254 being exposed to the insulating layer 346 and in contact and conductive with the dielectric layer 347.

[0091] Figure 13 shows a cross-sectional view of a longitudinal connecting portion 3221, which includes a substrate 325, a ground line 3252 on the front side of the substrate 325 and two AC lines 3254 on both sides of the ground line 3252, an insulating layer 346 covering the substrate 325, the ground line 3252 and the two AC lines 3254, a temperature measuring line 3253 on the bottom side of the substrate 325 and a cover film 349 covering the bottom side of the substrate 325 and the temperature measuring line 3253.

[0092] Referring to Figure 2, there are ten adhesive members 33, each corresponding to one electrode unit group. The shape of the adhesive member 33 is substantially the same as that of the electrode unit group, and the size of the adhesive member 33 is slightly larger than that of the electrode unit group. The adhesive member 33 is substantially in the shape of a dumbbell, which includes two main adhesive portions 331 and a connecting band 332 connecting the two main adhesive portions 331. The main adhesive portions 331 cover two electrode units 320 in the corresponding electrode unit group, respectively, and the connecting band 332 covers the first longitudinal connecting portion 3222A in the electrode unit group.

[0093] The present application also provides other embodiments of the electrode array 32. The difference between the embodiments is mainly the layout and arrangement of the electrode units 320, the connecting portions 322 and the wiring portions 323 of the electrode array 32. The details are described below.

[0094] Second embodiment:

[0095] Referring to Figure 14, which shows a plan view of a second embodiment of the electrode array 32' of the electrode patch according to the present application. In this embodiment, the electrode array 32' also includes a plurality of electrode units 320', a plurality of temperature sensors 321', a plurality of connecting portions 322' and a plurality of wiring portions 323'. The temperature sensors 321' are selectively arranged on some of the electrode units 320'. The connecting portions 322' connect two adjacent electrode units 320'. The wiring portions 323' are arranged between two connecting portions 322' and are soldered or detachably connected to a wire (not shown).

[0096] The electrode array 32' is provided with twenty electrode units 320', which are arranged in a four-row and six-column array. Four electrode units 320' are arranged in each of the first and fourth rows, and six electrode units 320' are arranged in each of the second and third rows. The six electrode units 320' in the second and third rows are arranged in six columns in a one-to-one correspondence from top to bottom. The four electrode units 320' in the first and fourth rows are arranged in the middle four columns. From left to right, the four electrode units 320' in the first row are defined as electrode units C1', C2', C3', and C4', the six electrode units 320' in the second row are defined as electrode units C5', C6', C7', C8', C9', and C10', the six electrode units 320' in the third row are defined as electrode units C11', C12', C13', C14', C15', and C16', and the four electrode units 320' in the fourth row are defined as electrode units C17', C18', C19', and C20'.

[0097] The connection portions 322' of the electrode array 32' also include meridional connection portions 3221' extending in the longitude direction (i.e., the column direction) and latitudinal connection portions 3222' extending in the latitude direction (i.e., the row direction). However, the latitudinal connection portions 3222' are arranged between some adjacent electrode units 320' in each row. The wiring portion 323' is arranged in a "T" shape between two meridional connection portions 3221'.

[0098] Unlike the electrode array 32 shown in FIG. 2, the electrode units 320' in the present embodiment are arranged in a straight line in both the row direction and the column direction. Adjacent electrode units 320' in each of the second to fifth columns are connected by corresponding meridional connection portions 3221'. Adjacent electrode units 320' in the middle four columns of the second row are arranged in a broken line in the row direction, i.e., the corresponding latitudinal connection portions 3222' are not arranged between adjacent electrode units 320' in the middle four columns of the second row. Adjacent electrode units 320' in the middle four columns of the third row are also arranged in a broken line in the row direction, i.e., the corresponding latitudinal connection portions 3222' are not arranged between adjacent electrode units 320' in the middle four columns of the third row. The "T" shaped wiring portion 323' is arranged between the meridional connection portions 3221' connecting the electrode units 320' in the third column of the second row and the third column of the third row and the meridional connection portions 3221' connecting the electrode units 320' in the fourth column of the second row and the fourth column of the third row.

[0099] The electrode unit groups of the present embodiment are also different from those of the first embodiment. Specifically, the electrode unit groups of the present embodiment include a first electrode unit group formed by two electrode units C1' and C2' in the first row and a weft connecting portion 3222' therebetween, a second electrode unit group formed by two electrode units C3' and C4' in the first row and a weft connecting portion 3222' therebetween, a third electrode unit group formed by two electrode units C5' and C6' in the second row and a weft connecting portion 3222' therebetween, a fourth electrode unit group formed by two electrode units C7' and C13' in the third column and a warp connecting portion 3221' therebetween, a fifth electrode unit group formed by two electrode units C8' and C14' in the fourth column and a warp connecting portion 3221' therebetween, a sixth electrode unit group formed by two electrode units C9' and C10' in the second row and a weft connecting portion 3222' therebetween, a seventh electrode unit group formed by two electrode units C11' and C12' in the third row and a weft connecting portion 3222' therebetween, an eighth electrode unit group formed by two electrode units C15' and C16' in the third row and a weft connecting portion 3222' therebetween, a ninth electrode unit group formed by two electrode units C17' and C18' in the fourth row and a weft connecting portion 3222' therebetween, and a tenth electrode unit group formed by two electrode units C19' and C20' in the fourth row and a weft connecting portion 3222' therebetween.

[0100] Of the ten electrode unit groups of the electrode array 32', the fourth and fifth electrode unit groups are located at the center of the electrode array 32' and are defined as the center electrode unit groups, and the other eight electrode unit groups are located around the periphery of the center electrode unit groups and are defined as the peripheral electrode unit groups. The weft connecting portions 3222' include first weft connecting portions 3222A' connecting two electrode units 320' in each electrode unit group and second weft connecting portions 3222B' connecting two adjacent electrode units 320' in two adjacent peripheral electrode unit groups. The two electrode units 320' in each electrode unit group have the same electrical performance, the same heat generation, and thus the same temperature. The reasons have been described in detail in the first embodiment and will not be repeated here.

[0101] The eight peripheral electrode unit groups of the electrode array 32' of the present embodiment are each provided with a temperature sensor 321'. Specifically, the eight temperature sensors 321' are arranged on the electrode units C2', C3', C6', C9', C12', C15', C18', and C19', respectively, and can directly detect the temperature of each peripheral electrode unit group.

[0102] Referring to FIGS. 14-16, the electrode array 32' of the present embodiment has the same hierarchical structure as the electrode array 32 of the first embodiment, which also includes a substrate 325' having a plurality of body portions 3250' and a plurality of connecting strips 3251', and the electrode units 320' are also provided with conductive pads 342' having through openings (not shown) at the centers of the body portions 3250', and the body portions 3250' of some of the electrode units 320' are provided with ground pads 344' and signal pads 345' at intervals within the openings (not shown) of the conductive pads 342' for electrical connection with the temperature sensors 321'. The electrode array 32' is provided on the substrate 325' with a plurality of conductive traces (not numbered), including a ground line 3252' for transmitting a ground signal, eight temperature-measuring lines (not shown) for transmitting direct-current signals, and a plurality of AC lines 3254' for transmitting alternating-current signals. The aforementioned wiring portion 323' is provided with eleven gold fingers 3231', one of which is in electrical connection with the ground line 3252', one is in electrical connection with the AC line 3254', one is in electrical connection with a shielding layer (not shown) of the conductive traces (not shown) and grounded for electromagnetic shielding and preventing signal interference, and the remaining eight are in electrical connection with the temperature-measuring lines (not shown) one by one.

[0103] The electrode array 32' of the present embodiment also includes an insulating layer 346' provided on the substrate 325' in a manner partially covering the body portions 3250' and the connecting portions 322' and completely covering the wiring portion 323', a dielectric layer (not shown) provided on the insulating layer 346' and the conductive pads 342' and the corresponding AC lines 3254' within the electrode unit groups and not covered by the insulating layer 346', an alloy layer 348' provided on the dielectric layer (not shown) in units of electrode unit groups, and a cover film (not shown) provided on the back of the substrate 325' as a whole. The specific hierarchical structure of the electrode array 32' of the present embodiment and the arrangement of the conductive traces (not numbered) can be understood by referring to the relevant description of the electrode array 32 of the first embodiment, which will not be repeated here.

[0104] With reference to FIGS. 14 and 15, the insulating layer 346' of the electrode array 32' of the present embodiment is partially covering the main body 3250', the conductive sheet 342', the weft connecting portions 3222' within each electrode unit group, and the connecting strips 3251' of the AC lines 3254' and the ground lines 3252' on the warp connecting portions 3221' in the fourth and fifth electrode unit groups, and is fully covering the remaining weft connecting portions 3222', the remaining warp connecting portions 3221', and the connecting strips 3251' of the wire portions 323'. The insulating layer 346' on the weft connecting portions 3222' within each electrode unit group and the warp connecting portions 3221' within each electrode unit group is exposing the corresponding AC line 3254' so that the AC line 3254' is directly in contact with and conducting through the dielectric layer (not shown) laid thereon.

[0105] It is to be noted that the other relevant descriptions of the electrode array 32' of the second embodiment are the same as those of the electrode array 32 of the first embodiment, and will not be repeated here.

[0106] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. An electrode patch comprising a backing, an array of electrodes attached to the backing, and a plurality of adhesive members attached to the array of electrodes, wherein: The electrode array comprises a plurality of electrode units and a plurality of connecting portions connecting adjacent two electrode units, the plurality of electrode units are arranged in multiple rows and multiple columns, adjacent two electrode units in each row and the connecting portion connecting the two electrode units form an electrode unit group, the front surface of each electrode unit is provided with a conductive sheet, the front surface of each connecting portion is provided with an AC line, the AC line is connected with and conducts the conductive sheet of the electrode unit at both ends of the connecting portion; the electrode array further comprises a dielectric layer corresponding to the electrode unit group, the dielectric layer directly covers and connects two conductive sheets and the AC line in the corresponding electrode unit group.

2. The electrode patch of claim 1, wherein: The electrode array further comprises an insulating layer on the conductive sheet, the insulating layer exposes the conductive sheet to make the conductive sheet directly contact with the dielectric layer.

3. The electrode patch of claim 2, wherein: The insulating layer is also provided on the connecting portion between the two electrode units of the electrode unit group, the insulating layer exposes the AC line to make the AC line directly contact with the dielectric layer, and the dielectric layer is provided on the insulating layer.

4. The electrode patch of claim 3, wherein: The dielectric layer forms a plurality of disconnected intervals on the front surface of the connecting portion between a plurality of electrode unit groups.

5. The electrode patch of claim 1, wherein: The electrode array further comprises an alloy layer, the alloy layer is laid on the dielectric layer corresponding to each electrode unit group, and the adhesive layer is directly covered on the alloy layer.

6. The electrode patch of claim 1, wherein: At most one of the two electrode units in the electrode unit group is provided with a temperature sensor.

7. The electrode patch of claim 6, wherein: The electrode unit group comprises a peripheral electrode unit group located at the periphery of the electrode array and a central electrode unit group surrounded by the peripheral electrode unit group, and the temperature sensor is arranged on a corresponding electrode unit in the peripheral electrode unit group.

8. The electrode patch of claim 7, wherein: The temperature sensor is provided with a ground terminal and a signal terminal, the electrode array is provided with a substrate and a plurality of conductive traces arranged on the front surface of the substrate, the conductive traces comprise a ground line electrically connected with the ground terminal, a temperature measuring line electrically connected with the corresponding signal terminal, and the AC line electrically connecting all the conductive sheets, the ground line and the AC line are located on the front surface of the substrate, and the temperature measuring line is located on the back surface of the substrate.

9. The electrode patch of claim 8, wherein: The electrode array further comprises a covering film, the covering film fixes all the temperature measuring lines to the back surface of the substrate.

10. An electrode patch comprising a backing, an array of electrodes adhered to the backing, and a plurality of adhesive members adhered to the array of electrodes, wherein: The electrode array comprises a plurality of electrode units and a plurality of connecting portions connecting adjacent two electrode units, the plurality of electrode units are arranged in multiple rows and multiple columns, adjacent two electrode units in each row and the connecting portion connecting the two electrode units form an electrode unit group, the electrode array comprises a plurality of peripheral electrode unit groups located at the periphery thereof and a plurality of central electrode unit groups or a plurality of central electrode units surrounded by the plurality of peripheral electrode unit groups, and the temperature of two electrode units in each of the plurality of electrode unit groups is basically the same; the electrode array further comprises a temperature sensor arranged only in the peripheral electrode unit group, and each peripheral electrode unit group is provided with only one temperature sensor.

11. The electrode patch of claim 10, wherein: The temperature sensor is arranged on one electrode unit close to the center of the electrode array in the corresponding peripheral electrode unit group.

12. The electrode patch of claim 10, wherein: The electrode array comprises twenty electrode units, four electrode units in the first row and the fourth row, six electrode units in the second row and the third row, the six electrode units in the second row and the third row corresponding to each other in pairs and arranged in six columns, and the four electrode units in the first row and the fourth row being located in the middle four columns; the twenty electrode units form two central electrode unit groups and eight peripheral electrode unit groups; the electrode array comprises eight temperature sensors arranged in the eight peripheral electrode unit groups.

13. The electrode patch of claim 12, wherein: The eight temperature sensors are arranged in the eight electrode units in the third column of the first row, the fourth column of the first row, the second column of the second row, the fifth column of the second row, the second column of the third row, the fifth column of the third row, the third column of the fourth row, and the fourth column of the fourth row.

14. The electrode patch of claim 10, wherein: The connecting part comprises weft connecting parts arranged along the row direction and warp connecting parts arranged along the column direction, the weft connecting parts comprise first weft connecting parts connecting two electrode units in each electrode unit group, second weft connecting parts connecting two adjacent electrode units in two adjacent peripheral electrode unit groups, and third weft connecting parts connecting an electrode unit in a peripheral electrode unit group and an electrode unit in a central electrode unit group, the length of the third weft connecting part being shorter than the length of the first weft connecting part and the second weft connecting part.

15. The electrode patch of claim 14, wherein: The first weft connecting part and the second weft connecting part have the same length.

16. The electrode patch of claim 10, wherein: The electrode unit is provided with a conductive sheet, and the connecting part is provided with an AC line, the two ends of the AC line being electrically connected to the corresponding conductive sheet.

17. The electrode patch of claim 16, wherein: The electrode array comprises a dielectric layer arranged corresponding to each electrode unit group in a manner of directly covering and connecting two conductive sheets and the AC line in the corresponding electrode unit group.

18. The electrode patch of claim 17, wherein: The electrode array further comprises an alloy layer covering the dielectric layer, and the adhesive member is arranged on the alloy layer.

19. An electrode patch comprising a backing, an array of electrodes attached to the backing, and a plurality of adhesive members attached to the array of electrodes, wherein: The electrode array comprises a plurality of electrode units arranged in multiple rows and multiple columns, connecting parts connecting adjacent two electrode units, and wiring parts for external connection of wires, two adjacent electrode units in each row and the connecting part connecting the two electrode units forming an electrode unit group; each electrode unit comprises a main body part, each connecting part and wiring part comprises a connecting strip, each main body part and each connecting strip jointly form a substrate, a conductive layer is arranged on the front surface of the substrate, part of the conductive layer and part of the substrate are arranged with an insulating layer, and a dielectric layer is arranged on the insulating layer, wherein the conductive layer comprises a plurality of conductive sheets arranged in a spaced manner on the main body part, the conductive sheets are exposed to the insulating layer and in contact with the dielectric layer.

20. The electrode patch of claim 19, wherein: The electrode array further comprises an alloy layer arranged on the dielectric layer, and the adhesive member is arranged on the alloy layer.

21. The electrode patch of claim 19, wherein: The electrode array comprises a plurality of conductive traces, and the electrode array further comprises a covering film arranged on the back surface of the substrate, and the covering film covers part of the conductive traces arranged on the back surface of the substrate.

22. The electrode patch of claim 19, wherein: The conductive sheet is arranged on the front surface of each main body part, the conductive sheet and the main body part are circular and arranged in concentric manner, the outer contour of the conductive sheet is smaller than the contour of the main body part, the insulating layer covers the conductive sheet and the main body part, and the insulating layer is provided with a hollow area exposing the conductive sheet.

23. The electrode patch of claim 22, wherein: The center of the conductive sheet is provided with a through hole, the insulating layer arranged on the main body part includes a circular insulating layer at the center, an annular insulating layer at the outer ring, and a plurality of insulating bands radially connecting between the circular insulating layer and the annular insulating layer, and a plurality of hollow areas are separated by the insulating bands between the circular insulating layer and the annular insulating layer.

24. The electrode patch of claim 23, wherein: The outer circular contour of the annular insulating layer is the same as the outer circular contour of the main body part, the inner circular contour of the annular insulating layer is smaller than the outer circular contour of the conductive sheet, and the outer circular contour of the circular insulating layer is larger than the outer circular contour of the through hole of the conductive sheet.

25. The electrode patch of claim 22, wherein: The center of the conductive sheet is provided with a through hole, the conductive layer further includes a ground pad and a signal pad arranged on the main body part and located in the through hole, and the insulating layer exposes the ground pad and the signal pad.

26. The electrode patch of claim 22, wherein: The electrode units are arranged in four rows and six columns, wherein the adjacent two electrode units in the same row are connected by the corresponding connecting part, the adjacent two electrode units in the third and fourth columns in the middle are connected by the corresponding connecting part, and the adjacent two electrode units in other columns are arranged in a disconnected manner.

27. The electrode patch of claim 19, wherein: The insulating layer is arranged on the substrate by a hot-pressing bonding process.

28. An electric field treatment system, characterized by: It comprises an electric field generator and an electrode patch as claimed in any one of claims 1 to 27.

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