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 flexible circuit board and a plurality of dielectric elements, the flexible circuit board has a plurality of main body parts arranged in multiple rows and at intervals, a plurality of connecting parts connecting adjacent two main body parts, and a wiring part, each dielectric element is arranged on a corresponding main body part and forms an electrode unit together with the corresponding main body part. The application further comprises a one-piece support, the support further has a plurality of support parts arranged correspondingly to the electrode units and a plurality of connecting parts connecting adjacent two support parts, the support is arranged on the periphery of the electrode array in a mode that each support part surrounds each electrode unit and each connecting part covers the corresponding connecting part and wiring part, and each connecting part is further provided with a plurality of grooves for accommodating each connecting part and wiring part on one side of the flexible circuit board. The support of the electrode sheet of the application can cover and position each connecting part, and can avoid the edge of the flexible circuit board from causing harm to a patient.

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 number CN114272513A discloses an electrode pad comprising an electrode array, several support 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 support members are elongated and corresponding to a row of electrode units. The support members have several through holes, which surround each row of electrode units. The adhesive members are also elongated and corresponding to the support members. The adhesive members completely cover the support members and also cover the electrode units located within the through holes of the support 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. To maintain the breathability of the electrode pads, adjacent supports are spaced apart, and the connection between adjacent supports is partially exposed. However, because the flexible circuit board is very thin, the edges of the connection are sharp, which can easily scratch the operator's fingers when the electrode pads are applied, removed, or moved.

[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 sheet, which can avoid accidental scratches caused by the edge of the flexible circuit board of the electrode sheet.

[0006] This application is achieved through the following technical solution: an electrode sheet comprising an electrode array, the electrode array comprising a flexible circuit board and a plurality of dielectric elements, the flexible circuit board having a plurality of main body portions arranged in multiple rows and spaced apart, a plurality of connecting portions connecting two adjacent main body portions and a wiring portion, each dielectric element being respectively disposed on a corresponding main body portion and together with the corresponding main body portion forming an electrode unit, and further comprising an integrated support member, the support member having a plurality of support portions corresponding one-to-one with the electrode units and a plurality of connecting portions connecting two adjacent support portions, the support member being disposed around the electrode unit with each of its support portions respectively and covering the corresponding connecting portions and wiring portions with each of its connecting portions respectively, wherein each connecting portion facing the flexible circuit board is further provided with a plurality of grooves respectively accommodating each of the connecting portions and wiring portions.

[0007] Furthermore, the plurality of connecting portions includes a first connecting portion, which covers the wiring portion and the plurality of connecting portions adjacent to the wiring portion.

[0008] Furthermore, the plurality of connecting portions also include a plurality of second connecting portions, the second connecting portions covering the remaining connecting portions.

[0009] Furthermore, the plurality of grooves include a first groove disposed on the first connecting portion and accommodating the wiring portion, and a plurality of second grooves disposed on the first connecting portion and the second connecting portion and respectively accommodating the corresponding connecting portions.

[0010] Furthermore, the support portion has a through hole for accommodating the electrode unit, and the electrode sheet is also provided with a plurality of adhesive members, which are respectively housed in each of the through holes of the support portion.

[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 one first connecting part between each pair of adjacent electrode units in each row, and only one second connecting part between each pair of adjacent electrode units in each row. All the second connecting parts are located on the left or right side of the electrode array.

[0012] Furthermore, in each row of electrode units, the leftmost or rightmost electrode unit is connected to a second connecting portion.

[0013] Furthermore, the electrode array has thirteen electrode units arranged in five rows and five columns, with two electrode units in the first and last rows, located in the second and fourth columns respectively; and three electrode units in each of the three middle rows, located in the first, third and fifth columns respectively. The wiring portion extends obliquely outward from the electrode unit located in the middle of the fourth row.

[0014] Furthermore, a backing is provided, the backing including a plurality of first substrate portions spaced apart and a plurality of second substrate portions connecting adjacent first substrate portions, the plurality of first substrate portions being respectively used for each of the support portions to be pasted and fixed, the plurality of second substrate portions being respectively used for the connecting portions to be pasted and fixed, wherein the width of the second substrate portion is smaller than the width of the first substrate portion.

[0015] This application also provides a tumor electric field therapy device, including the aforementioned electrode sheet.

[0016] In the tumor electric field therapy device and its electrode pads of this application, the support of the electrode pads can completely cover and position all the connection parts of the flexible circuit board, which can avoid the sharp edges of the flexible circuit board from causing accidental injury to the patient.

[0017] 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

[0018] 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 plan view showing the combination of the support and the electrode array; Figure 9 for Figure 2Another variation of the support member 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 3D view of the electrode sheet, omitting the adhesive parts.

[0019] 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, 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 4. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] The electrode sheet 100 includes a backing 1, an electrode array 2, a support 3, and several adhesive components 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 2The 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.

[0023] The electrode array 2 is centrally attached to the front of the backing 1. The electrode array 2 has several spaced-apart electrode units 20. Alternating current signals are applied to the patient through the electrode units 20 to create an alternating electric field between paired electrode sheets 100, thereby interfering with or preventing the mitosis of tumor cells. The support member 3 can be flexible foam, which has several through holes 30. Each through hole 30 corresponds to the position of a specific electrode unit 20. Specifically, the support member 3 is positioned around the electrode array 2 to house each electrode unit 20 within its corresponding through hole 30, protecting each electrode unit 20 and restricting the placement of the adhesive pieces 4. The adhesive pieces 4 are circular sheets that are positioned and filled within each through hole 30 of the support member 3. The through holes 30 further serve to position the adhesive pieces 4 and restrict their displacement. The adhesive 4 can be a double-sided adhesive conductive hydrogel, with one side covering the electrode unit 20 in the through hole 30, and the other side facing the patient's body surface is flush with or slightly protrudes from the side of the support 3 facing the patient's body surface, so as to fit closely to the patient's body surface and thus better apply AC signals. At the same time, it can absorb sweat on the skin surface and relieve skin discomfort.

[0024] 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.

[0025] 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 outward 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 connect an electrode unit 20 to the first connecting portion 2121. The wiring portion 213 extends diagonally to the left from the middle electrode unit 20 of 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 diagonally to the right.

[0026] 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.

[0027] 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.

[0028] 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 in the following positions: 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.

[0029] 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 arranged corresponding to the position of each electrode unit 20 on the electrode array 2, and each connecting portion 32 is arranged 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, and 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, which allows 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.

[0030] 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 only covers the corresponding connecting portion 212. The width of the second connecting portion 322 is greater 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 support member 3 adopts an integrated sheet structure, which can also improve the assembly efficiency of the electrode sheet 100.

[0031] refer to Figure 7 and Figure 8 As shown, the back of the support member 3 is also provided with several grooves 33. The grooves 33 are only located on the back of the support member 3 and do not penetrate through the support member 3. The grooves 33 include 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.

[0032] Figure 9Another embodiment of the support member 3 is the support member 3', which is basically the same as the support member 3. It also includes several support portions 31' and several connecting portions 32' connecting adjacent support portions 31'. Each support portion 31' is arranged corresponding to the position of each electrode unit 20 on the electrode array 2. The support portion 31' is provided with a through hole 30' for receiving the electrode unit 20. The only difference between the support member 3' and the support member 3 is that the aforementioned groove is not provided on its back side. The other structures are the same and will not be described in detail.

[0033] refer to Figure 10 and Figure 11 As 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 and the support member 3. 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.

[0034] 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.

[0035] 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', 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 ventilation groove 14' with a certain width is formed between adjacent strip-shaped portions 13'. The ventilation groove 14' is the narrowest between two adjacent first substrate portions 11', with a width of about 5 mm, and the widest between two adjacent second substrate portions 12', with a width of about 20 mm. The ventilation 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.

[0036] 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 flexible circuit board and a plurality of dielectric elements, the flexible circuit board having a plurality of main body portions arranged in multiple rows and spaced apart, a plurality of connecting portions connecting adjacent main body portions, and a wiring portion, each of the dielectric elements being respectively disposed on a corresponding main body portion and together with the corresponding main body portion constituting an electrode unit, characterized in that: It also includes an integrated support member, which has a plurality of support portions corresponding to the electrode units and a plurality of connecting portions connecting adjacent support portions. The support member is arranged around the electrode array such that each of its support portions surrounds each of the electrode units and each of its connecting portions covers the corresponding connecting portion and the wiring portion. Each of the connecting portions is provided with a plurality of grooves on the side facing the flexible circuit board to accommodate each of the connecting portions and the wiring portion.

2. The electrode sheet according to claim 1, characterized in that, The plurality of connecting portions include a first connecting portion, which covers the wiring portion and a plurality of connecting portions adjacent to the wiring portion.

3. The electrode sheet according to claim 2, characterized in that, The plurality of connecting portions further include a plurality of second connecting portions, the second connecting portions covering the remaining connecting portions.

4. The electrode sheet according to claim 3, characterized in that, The plurality of grooves include a first groove disposed on the first connecting portion and accommodating the wiring portion, and a plurality of second grooves disposed on the first connecting portion and the second connecting portion and respectively accommodating the corresponding connecting portions.

5. The electrode sheet according to claim 1, characterized in that, The support portion has a through hole for accommodating the electrode unit, and the electrode sheet is further provided with a plurality of adhesive members, which are respectively housed in each of the through holes of the support portion.

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 parts include a plurality of first connecting parts extending along the row direction and a plurality of second connecting parts extending along the column direction or diagonally. There is a first connecting part between each pair of adjacent electrode units in each row, and there is only one second connecting part between each pair of adjacent electrode units in each row. All the second connecting parts are located on the left or right side of the electrode array.

7. The electrode sheet according to claim 6, characterized in that, In each row of electrode units, the leftmost or rightmost electrode unit is connected to at least one of the second connecting portions.

8. The electrode sheet according to claim 7, 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. The middle three rows each have three electrode units, located in the first, third, and fifth columns, respectively. The wiring portion extends obliquely outward from the electrode unit located in the middle of the fourth row.

9. 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 connecting two adjacent first substrate portions. The plurality of first substrate portions are respectively used for each of the support portions to be pasted and fixed, and the plurality of second substrate portions are respectively used for the connecting portions to be pasted and fixed, wherein the width of the second substrate portion is smaller than the width of the first substrate portion.

10. A tumor electric field therapy device, characterized in that, Includes the electrode sheet as described in any one of claims 1 to 9.

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