Tumor electric field treatment device and electrode sheet thereof

Abstract

The application provides a tumor electric field treatment device and an electrode sheet thereof. The electrode sheet comprises an electrode array, the electrode array comprises a plurality of electrode units arranged in multiple rows and at intervals, and a plurality of connecting parts connecting adjacent electrode units. The electrode sheet further comprises a support and a sticking part. The support has a plurality of support parts arranged in multiple rows and at intervals, and a plurality of connecting parts connecting adjacent two support parts. The support parts are arranged one by one corresponding to the electrode units and are provided with through holes for accommodating the electrode units. The sticking part is a sheet type conductive hydrogel, and the sticking part completely covers the support and all the electrode units. In the tumor electric field treatment device and the electrode sheet thereof, the support and the sticking part are both sheet type, and the assembly efficiency of the electrode sheet can be improved.

Description

Technical Field

[0001] This application relates to a tumor electric field therapy device and its electrode pads, belonging to the field of medical device technology. Background Technology

[0002] Currently, the main treatments for tumors include surgery, radiotherapy, and chemotherapy, but all of these have their own drawbacks. For example, radiotherapy and chemotherapy can cause side effects and kill normal cells. Using electric fields to treat tumors is also at the forefront of research. Tumor Treating Fields (TTF) is a method that applies a low-intensity, medium-frequency alternating electric field to cancer cells, thereby interfering with the mitotic process of cancer cells, inhibiting mitosis, and inducing apoptosis, thus achieving a therapeutic effect.

[0003] A therapeutic electric field for tumor treatment is applied to the tumor site via electrode pads attached to the skin corresponding to the tumor location. Chinese Invention Patent Application Publication No. CN114272513A discloses an electrode pad comprising an electrode array, several supporting members, and several adhesive members. The electrode array includes a flexible circuit board and multiple dielectric elements. The flexible circuit board has several main bodies and several connecting parts connecting adjacent main bodies. The main bodies are arranged in a matrix of multiple rows and columns. Each dielectric element is fixed to a corresponding main body, thus the dielectric elements are also arranged in multiple rows and columns. The supporting members are elongated and corresponding to a row of electrode units. The supporting members have several through holes, which surround each row of electrode units. The adhesive members are also elongated and corresponding to the supporting members. The adhesive members completely cover the supporting members and also cover the electrode units located within the through holes of the supporting members, directly adhering to the patient's skin. The electrode units apply an alternating electric field to the patient through the adhesive members. The adhesive members can be made of conductive gel. However, the electrode sheet has a large number of support components and adhesive components, and each component needs to be assembled individually, which affects the assembly efficiency.

[0004] Therefore, it is indeed necessary to provide an improved electrode sheet and tumor electric field therapy device to solve the problems existing in the prior art. Utility Model Content

[0005] This application provides a tumor electric field therapy device and its electrode pads that are easy to assemble.

[0006] The electrode sheet of this application is achieved through the following technical solution: an electrode sheet comprising an electrode array, the electrode array comprising a plurality of electrode units arranged in multiple rows and spaced apart, and a plurality of connecting portions connecting adjacent electrode units, further comprising a support member and an adhesive member, the support member being a single piece, the support member having a plurality of supporting portions arranged in multiple rows and spaced apart, and a plurality of connecting portions connecting two adjacent supporting portions, the supporting portions being arranged one-to-one with the electrode units and having through holes for receiving the electrode units; the adhesive member being a single piece of conductive hydrogel, the adhesive member completely covering the support member and all the electrode units.

[0007] Furthermore, the adhesive includes a plurality of first covering portions arranged in multiple rows and a plurality of second covering portions connecting adjacent first covering portions. The first covering portions cover the support portion and the electrode unit located in the same row, and the second covering portions cover the connecting portion located between two rows.

[0008] Furthermore, only one second covering portion is provided between the first covering portions of two adjacent rows, and both are located on the same side of the adhesive.

[0009] Furthermore, the outer contour of the adhesive component is the same as the outer contour of the support component.

[0010] Furthermore, the electrode array includes a flexible circuit board and several dielectric elements. The flexible circuit board has several main body portions arranged in multiple rows at intervals, several connecting portions connecting two adjacent main body portions, and a wiring portion. The dielectric elements are disposed on the main body portions and together with the corresponding main body portions form an electrode unit. The several connecting portions of the support member include a first connecting portion and several second connecting portions. The first connecting portion covers the wiring portion and several connecting portions adjacent to the wiring portion, and the second connecting portions cover the corresponding connecting portions.

[0011] Furthermore, the electrode units are arranged in multiple rows and columns, and the connecting parts include a number of first connecting parts extending along the row direction and a number of second connecting parts extending along the column direction or diagonally. There is only one second connecting part between two adjacent rows of electrode units, and all the second connecting parts are located on the same side of the electrode array.

[0012] Furthermore, the support members are arranged in multiple rows, with only one connecting portion between each row of support members, which covers the corresponding second connecting portion.

[0013] Furthermore, the electrode sheet is also provided with a backing, which includes a plurality of first substrate portions spaced apart and a plurality of second substrate portions connected to adjacent first substrate portions, wherein the plurality of first substrate portions are respectively used for the attachment and fixation of each of the support portions.

[0014] Furthermore, several second substrate portions are respectively used for the bonding portion to be glued and fixed, wherein the width of the second substrate portion is smaller than the width of the first substrate portion.

[0015] Furthermore, the electrode array has thirteen electrode units arranged in five rows and five columns, with two electrode units in the first row and two in the last row, located in the second and fourth columns respectively, and three electrode units in each of the middle three rows; the electrode array also has eight temperature sensors, located on the two electrode units in the first row, one electrode unit in the middle of the second row, two electrode units at both ends of the third row, one electrode unit in the middle of the fourth row, and two electrode units in the last row.

[0016] This application also provides a tumor electric field therapy device, including the aforementioned electrode sheet.

[0017] In the tumor electric field therapy device and its electrode sheet of this application, the support and adhesive parts are all one-piece, which can improve the assembly efficiency of the electrode sheet.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0019] Figure 1 This is a plan view of the electrode pads of a tumor electric field therapy device according to one embodiment of this application; Figure 2 for Figure 1 An exploded three-dimensional view of the electrode sheet shown. Figure 3 for Figure 2 An exploded three-dimensional view of the electrode array of the electrode sheet shown; Figure 4 for Figure 2 A plan view of the electrode array shown; Figure 5 for Figure 2 A plan view of the support structure for the electrode sheet shown; Figure 6 for Figure 2 The diagram shows the combined plan view of the support and electrode array. Figure 7 for Figure 5 Another plan view of the support component shown; Figure 8 for Figure 2 Another combined plan view of the support and electrode array shown; Figure 9 for Figure 2 Another variation of the adhesive element shown; Figure 10 This is a plan view of the electrode pads of a tumor electric field therapy device according to another embodiment of this application; Figure 11 for Figure 10 An exploded three-dimensional view of the electrode sheet.

[0020] Explanation of reference numerals in the attached figures: Electrode sheets 100, 100', backing 1, 1', first substrate 11', second substrate 12', strip 13', ventilation groove 14', electrode array 2, electrode unit 20, flexible circuit board 21, main body 211, connecting part 212, first connecting part 2121, second connecting part 2122, wiring part 213, dielectric element 22, opening 221, insulating plate 23, temperature sensor 24, support member 3, through hole 30, support part 31, connecting part 32, first connecting part 321, second connecting part 322, groove 33, first groove 331, second groove 332, adhesive member 4, 4', first covering part 41, second covering part 42. Detailed Implementation

[0021] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses, systems, devices, and methods consistent with some aspects of this application.

[0022] refer to Figure 1 and Figure 2 As shown, the tumor electric field therapy device of this utility model includes multiple pairs of electrode patches 100 and an electric field generator (not shown) electrically connected to each electrode patch 100. The electric field generator (not shown) provides an alternating current signal and transmits it to each pair of electrode patches 100. After receiving the alternating current signal, each pair of electrode patches 100 forms an alternating electric field between the two. The multiple pairs of electrode patches 100 alternately apply alternating electric fields in different directions to the tumor site of the patient (such as the chest, abdomen, etc.) to perform tumor electric field therapy on the patient.

[0023] The electrode sheet 100 includes a backing 1, an electrode array 2, a support 3, and an adhesive 4. The backing 1 serves as the substrate structure for the electrode sheet 100, and is generally arranged in an octagonal sheet shape. It can be made of a mesh material with properties such as flexibility, breathability, insulation, and sterilization, such as non-woven fabric. The front side of the backing 1 ( Figure 2 The electrode array 2, support 3 and adhesive 4 are all located on the front of the backing 1 (the side facing upwards) facing the patient's body surface. The front of the backing 1 is coated with a biocompatible adhesive, which can tightly adhere the electrode pad 100 to the patient's body surface.

[0024] The electrode array 2 is centrally attached to the front of the backing 1. The electrode array 2 has several electrode units 20 spaced apart. Alternating current signals are applied to the patient through the electrode units 20 to create an alternating electric field between paired electrode pads 100, thereby interfering with or preventing the mitosis of tumor cells. The support 3 can be flexible foam with several through holes 30, each corresponding to a specific electrode unit 20. Specifically, the support 3 is positioned around the electrode array 2 to house each electrode unit 20 within its corresponding through hole 30, protecting the electrode units 20 and supporting the adhesive 4. The adhesive 4 can be a double-sided adhesive conductive hydrogel. One side covers the support 3 and the electrode units 20 exposed through the through holes 30 on the support 3, while the other side adheres tightly to the patient's skin surface, thus better applying the alternating current signal and absorbing sweat from the skin surface to alleviate discomfort.

[0025] refer to Figure 3 As shown, the electrode array 2 includes a flexible circuit board 21 and several dielectric elements 22. The flexible circuit board 21 includes several main body portions 211, several connecting portions 212, and a wiring portion 213 spaced apart. The main body portions 211 are arranged in a circular sheet shape, and the connecting portions 212 are arranged in a strip shape. The connecting portions 212 connect two adjacent main body portions 211. The wiring portion 213 is connected to an electric field generator (not shown) via wires (not shown) to transmit AC signals for treatment and DC signals for temperature measurement in a time-division multiplexing manner. The dielectric elements 22 can be circular ceramic sheets with a high dielectric constant. The dielectric elements 22 are soldered to the conductive pads (not shown) on the front side of the main body portions 211 to receive the AC signals transmitted by the flexible circuit board 21. The main body portions 211 and the dielectric elements 22 together form the aforementioned electrode unit 20. It can be understood that the position of each main body portion 211 is the position of each electrode unit 20. The electrode array 2 also includes several insulating plates 23 adhered to the back of each main body 211. The insulating plates 23 can strengthen the main body 211 and facilitate the welding operation between the main body 211 and the dielectric element 22.

[0026] Combination Figure 4As shown, the electrode array 2 in this embodiment has thirteen electrode units 20 arranged at intervals, in a five-row, five-column configuration. The first and last rows each have two electrode units 20, located in the second and fourth columns respectively. The middle three rows each have three electrode units 20, located in the first, third, and fifth columns respectively. A plurality of connecting portions 212 connect these electrode units 20 together. Each connecting portion 212 includes a plurality of first connecting portions 2121 extending along the row direction and a plurality of second connecting portions 2122 extending along the column direction or diagonally. Each row has a first connecting portion 2121 connecting two adjacent electrode units 20, and each adjacent row has only one second connecting portion 2122 connecting two adjacent rows of electrode units 20. All second connecting portions 2122 are located on the same side of the electrode array 2. In this embodiment, all second connecting portions 2122 are located on the left side of the electrode array 2. The leftmost electrode unit 20 in each row is connected to at least one second connecting portion 2122. The second connecting portion 2122 can connect two adjacent electrode units 20, or it can connect an electrode unit 20 and a first connecting portion 2121 obliquely adjacent to that electrode unit 20. The wiring portion 213 extends obliquely to the left from the middle electrode unit 20 in the fourth row, utilizing the space between the electrode units 20 without increasing the size and manufacturing cost of the flexible circuit board 21. It is understood that the second connecting portions 2122 between two adjacent rows of electrode units 20 can also be located on the right side of the electrode array 2; the wiring portion 213 can also extend obliquely to the right.

[0027] Only one second connection part 2122 is provided between adjacent rows of electrode units 20, which can meet the connection requirements of wiring and structure. The second connection parts 2122 are all located on the left (or right) side of the electrode array 2. Each row of electrode units 20 can swing up and down with the left (or right) side as the fulcrum, which can more conveniently adjust the position of each electrode unit 20, so that the electrode array 2 can be more closely attached to the patient's body surface, and the connection part 212 can be avoided from cutting the patient's body surface.

[0028] The electrode array 2 is also provided with several temperature sensors 24. The temperature sensors 24 are soldered to the conductive pads (not shown) at the center of the front of the main body 211 and sealed with sealant after soldering. The dielectric element 22 has an opening 221 at its center to avoid and accommodate the temperature sensors 24. The temperature sensors 24 are used to monitor the temperature of the electrode unit 20, thereby monitoring the temperature of the human skin that is in contact with the electrode unit 20.

[0029] In this embodiment, there are eight temperature sensors 24, that is, the temperature sensors 24 are selectively disposed on eight corresponding electrode units 20, specifically: two electrode units 20 in the first row, one electrode unit 20 in the middle of the second row, two electrode units 20 at both ends of the third row (middle row), one electrode unit 20 in the middle of the fourth row, and two electrode units 20 in the last row. Due to the edge effect, the electrode units 20 located at the edges, especially the corners, experience faster temperature rise and reach the highest temperature during electrode array 2 operation, while the electrode units 20 located at the center experience slower temperature rise and reach the lowest temperature. This distribution of eight temperature sensors 24 allows for simultaneous monitoring of both high and low temperature values ​​in each electrode unit 20. If the temperature of any electrode unit 20 exceeds a safety threshold, the electric field strength can be reduced or shut off to prevent low-temperature burns to the patient. If the temperature of any electrode unit 20 does not exceed a safety threshold, and the highest temperature of one electrode unit 20 is lower than another lowest threshold, the electric field strength can be increased to enhance the therapeutic effect. This arrangement of temperature sensors 24 also achieves comprehensive temperature measurement. Compared to placing a temperature sensor 24 in each electrode unit 20, this reduces the number of temperature sensors 24, simplifies the wiring scheme of the flexible circuit board 21, and lowers manufacturing costs.

[0030] refer to Figure 5 As shown, the support member 3 has a shape roughly the same as the electrode array 2, including a plurality of support portions 31 spaced apart and a plurality of connecting portions 32 connecting adjacent support portions 31. Each support portion 31 is positioned corresponding to the position of each electrode unit 20 on the electrode array 2, and each connecting portion 32 is positioned corresponding to the position of each connecting portion 212 of the electrode array 2. The arrangement of the plurality of support portions 31 is the same as the arrangement of the electrode units 20, that is, the plurality of support portions 31 are arranged in multiple rows and columns. Corresponding to each second connecting portion 2122 of the electrode array 2, only one connecting portion 32 located on the left side of the support member 3 is provided between each row of support portions 31. The intervals between each row of support portions 31 allow the electrode unit 20 in each row of the electrode array 2 to swing relative to its left fulcrum. The center of the support portion 31 is provided with the aforementioned through hole 30 for receiving the electrode unit 20. The connecting portion 32 includes a first connecting portion 321 and a plurality of second connecting portions 322. The first connecting portion 321 is roughly triangular in shape, and the second connecting portions 322 are roughly strip-shaped.

[0031] Combination Figure 4 and Figure 6As shown, the first connecting portion 321 is provided corresponding to the wiring portion 213, and can cover the wiring portion 213 and multiple connecting portions 212 adjacent to the wiring portion 213. The size of the first connecting portion 321 should be able to completely cover the wiring portion 213 and the corresponding two connecting portions 212. The second connecting portion 322 is provided corresponding to the other connecting portions 212, and can cover the corresponding connecting portions 212 respectively. The width of the second connecting portion 322 is slightly larger than the width of the corresponding connecting portion 212 to completely cover the corresponding connecting portion 212. The widths of the second connecting portions 322 can be the same or different. The first connecting portion 321 connects the three support portions 31 adjacent to the wiring portion 213 together, and the other two adjacent support portions 31 are connected through the second connecting portion 322. The support portions 31 connected by the second connecting portion 322 are square or circular with rounded corners. When the support member 3 is assembled with the electrode array 2, the support member 3 is arranged around each electrode unit 20 with its through holes 30 accommodating each electrode unit 20. Only the top surface of the dielectric element 22 of the electrode unit 20 is exposed through the through holes 30 of the support member 3. All the connecting parts 212 and wiring parts 213 of the electrode array 2 are covered by the support member 3, which can prevent the exposed edges of the connecting parts 212 and wiring parts 213 from causing damage to the patient's application site. The top surface of the dielectric element 22 in the through hole 30 is flush with the top surface of the support member 3, which together with the support member 3 can provide a flat surface, which facilitates the adhesion of the adhesive piece 4 and improves the comfort of the electrode sheet 100 during application. The support member 3 adopts an integrated sheet structure, which can also improve the assembly efficiency of the electrode sheet 100.

[0032] refer to Figure 7 and Figure 8 As shown, the back of the support member 3 is also provided with several grooves 33, including a first groove 331 and several second grooves 332. The first groove 331 is located on the back of the first connecting part 321 and is used to accommodate the wiring part 213. The several second grooves 332 are respectively located on the back of the corresponding first connecting part 321 and second connecting part 322 and are used to accommodate the connecting parts 212 of the flexible circuit board 21 of the electrode array 2. The first groove 331 extends outward through the side of the first connecting part 321 to facilitate the connection of wires (not shown). The second grooves 332 are connected to two adjacent through holes 30. The support member 3 limits the electrode array 2 through the grooves 33 to prevent displacement between the electrode array 2 and the support member 3, and covers the side of the connecting parts 212 facing the patient to prevent the sharp edges of the connecting parts 212 from causing injury to the patient.

[0033] Back Figure 1 and Figure 2As shown, the adhesive component 4 is also an integral sheet structure, with the same outline as the support component 3. It can completely cover the support component 3 and all electrode units 20 located within the through holes 30 of the support component 3, each facing the patient's body surface. Using a one-piece adhesive component 4 for the electrode sheet 100 can improve the assembly efficiency of the electrode sheet 100. The adhesive component 4 includes a plurality of first covering portions 41 spaced apart and a plurality of second covering portions 42 connecting adjacent first covering portions 41. Each first covering portion 41 is arranged in multiple rows corresponding to each support portion 31 of the support component 3 to cover each support portion 31 and each electrode unit 20 respectively. Each second covering portion 42 is arranged corresponding to each connecting portion 32 of the support component 3 to cover each connecting portion 32 of the support component 3 respectively. In this embodiment, the size of the adhesive component 4 is the same as the size of the support component 3, and it can completely cover the dielectric element 22 of the electrode unit 20 located within the through holes 30. The second covering portion 42 corresponding to the first connecting portion 321 is arranged in a triangular sheet shape, while the other second covering portions 42 are all arranged in a strip shape.

[0034] Several first covering portions 41 are arranged in multiple rows and columns. Only one second covering portion 42 is provided between each row of first covering portions 41, located on the left (or right) side of the adhesive member 4, allowing each row of first covering portions 41 a certain degree of freedom. Although the adhesive member 4 is a single piece, its structure is consistent with that of the support member 3, which in turn is basically consistent with the structure of the electrode array 2. Therefore, neither the adhesive member 4 nor the support member 3 affects the swinging of each row of electrode units 20 of the electrode array 2 with the left side as the fulcrum. Furthermore, it is understood that since the shape of the adhesive member 4 is roughly the same as that of the electrode array 2, the support member 3, through the design of the corresponding groove 33, completely covers the side of the electrode array 2 facing the patient, including the connecting portion 212 and the wiring portion 213. The adhesive member 4 covers the support member 3 and the dielectric element 22 exposed on the support member 3, providing a good conductive interface and further protection.

[0035] Figure 9 Another implementation of the adhesive component is provided, which is an adhesive component 4'. The adhesive component 4' is divided into multiple parts, and each adhesive component 4' covers the support part 31 and the connecting part 32 located in the same row as the support member 3. Compared with the one-piece adhesive component 4, the adhesive component 4' has a simpler structure and is easier to manufacture.

[0036] refer to Figure 10 and Figure 11As shown, this application also provides another embodiment of the electrode pad 100, the electrode pad 100', which differs from the electrode pad 100 only in the shape of the backing 1'. The backing 1' is not a complete sheet structure but a hollow structure corresponding to the shape of the support member 3. In this embodiment, the shape of the backing 1' is basically the same as the shape of the support member 3, so as to minimize the area while fully supporting the electrode array 2, the support member 3 and the adhesive member 4. In this way, it is convenient to adjust the relative position of each row of electrode units 20 for application, so as to avoid the parts of the patient who are not suitable for applying the electrode pad 100', while leaving more open space to solve the skin problems (such as skin itching, redness and swelling) caused by long-term application of the complete sheet backing 1.

[0037] Specifically, the backing 1' includes a plurality of first substrate portions 11' spaced apart and a plurality of second substrate portions 12' connecting adjacent first substrate portions 11'. The first substrate portions 11' are provided corresponding to the support portions 31 of the support member 3 for each support portion 31 to be glued and fixed. The second substrate portions 12' are provided corresponding to each connecting portion 32 of the support member 3 for each connecting portion 32 to be glued and fixed. The width of the second substrate portion 12' is smaller than the width of the first substrate portion 11'. The size of the first substrate portion 11' needs to be larger than the size of the support portion 31, and the size of the second substrate portion 12' needs to be larger than the size of the connecting portion 32. The edge line of the backing 1' extends outward by a certain distance relative to the corresponding edge line of the support member 3, approximately 5mm, so as to reliably allow the support member 3 to be glued.

[0038] As previously described, the electrode units 20 of the electrode array 2 are arranged in multiple rows, and the rows of electrode units 20 are connected only on the left side of the electrode array 2 via adjacent connecting portions 212. Correspondingly, the support portions 31 of the support member 3 are also arranged in multiple rows, and the rows of support portions 31 are connected only on the left side via corresponding connecting portions 32. Accordingly, the backing 1' forms multiple strip-shaped portions 13' corresponding to the row of electrode units 20, and the left ends of adjacent strip-shaped portions 13' are connected to each other. Each strip-shaped portion 13' includes multiple first substrate portions 11' and one or more second substrate portions 12'. A venting groove 14' with a certain width is formed between adjacent strip-shaped portions 13'. The venting groove 14' is the narrowest between two adjacent first substrate portions 11', with a width of about 5 mm, and the venting groove 14' is the widest between two adjacent second substrate portions 12', with a width of about 20 mm. The venting groove 14' can improve the air permeability of the backing 1'. In addition, the right end of the vent groove 14' is open, so each strip 13' can move together with each row of electrode units 20 of the electrode array 2, making it easier to adjust the position of the electrode units 20.

[0039] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An electrode sheet comprising an electrode array, the electrode array comprising a plurality of electrode units arranged in multiple rows at intervals and a plurality of connecting portions connecting adjacent electrode units, characterized in that: It also includes a support member and an adhesive member. The support member is a single piece and has a plurality of support portions arranged in multiple rows at intervals and a plurality of connecting portions connecting two adjacent support portions. The support portions are arranged one-to-one with the electrode units and are provided with through holes for receiving the electrode units. The adhesive member is a single piece of conductive hydrogel and completely covers the support member and all the electrode units.

2. The electrode sheet according to claim 1, characterized in that, The adhesive includes a plurality of first covering portions arranged in multiple rows and a plurality of second covering portions connecting two adjacent first covering portions. The first covering portions cover the support portion and the electrode unit located in the same row, and the second covering portions cover the connecting portion located between two rows.

3. The electrode sheet according to claim 2, characterized in that, Only one second cover is provided between the first cover portions of two adjacent rows, and both are located on the same side of the adhesive.

4. The electrode sheet according to claim 2, characterized in that, The outer contour of the adhesive is the same as the outer contour of the support.

5. The electrode sheet according to claim 1, characterized in that, The electrode array includes a flexible circuit board and several dielectric elements. The flexible circuit board has several main body portions arranged in multiple rows at intervals, several connecting portions connecting two adjacent main body portions, and a wiring portion. The dielectric elements are disposed on the main body portions and together with the corresponding main body portions form an electrode unit. The several connecting portions of the support member include a first connecting portion and several second connecting portions. The first connecting portion covers the wiring portion and several connecting portions adjacent to the wiring portion, and the second connecting portions cover the corresponding connecting portions.

6. The electrode sheet according to claim 1, characterized in that, A plurality of electrode units are arranged in multiple rows and columns. The plurality of connecting portions include a plurality of first connecting portions extending along the row direction and a plurality of second connecting portions extending along the column direction or diagonally. There is only one second connecting portion between two adjacent rows of electrode units, and all the second connecting portions are located on the same side of the electrode array.

7. The electrode sheet according to claim 6, characterized in that, The support member has several support portions arranged in multiple rows, with only one connecting portion between each row of support portions, which covers the corresponding second connecting portion.

8. The electrode sheet according to claim 1, characterized in that, It also includes a backing, which includes a plurality of first substrate portions spaced apart and a plurality of second substrate portions connected to adjacent first substrate portions. The plurality of first substrate portions are respectively used for the adhesion and fixation of each of the support portions, and the plurality of second substrate portions are respectively used for the adhesion and fixation of the connecting portions.

9. The electrode sheet according to claim 8, characterized in that, The width of the second substrate portion is smaller than the width of the first substrate portion.

10. The electrode sheet according to claim 1, characterized in that, The electrode array has thirteen electrode units arranged in five rows and five columns. The first and last rows each have two electrode units, located in the second and fourth columns respectively, and the middle three rows each have three electrode units. The electrode array also has eight temperature sensors, located on the two electrode units in the first row, the middle electrode unit in the second row, the two electrode units at both ends of the third row, the middle electrode unit in the fourth row, and the two electrode units in the last row.

11. A tumor electric field therapy device, characterized in that, Includes the electrode sheet as described in any one of claims 1 to 10.

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