Tumor electric field treatment device and electrode plate thereof

Abstract

The utility model provides a tumor electric field treatment device and an electrode plate thereof. The electrode plate comprises an electrode array, and the electrode array is provided with a plurality of electrode units arranged at intervals, a plurality of connecting parts connecting two adjacent electrode units and wiring parts connected with the electrode units or the connecting parts. The plurality of electrode units are distributed in multiple rows and multiple columns, and the plurality of connecting parts comprise a plurality of first connecting parts for connecting two adjacent electrode units in the same row and a plurality of second connecting parts for connecting two adjacent electrode units in the same column. All the second connecting parts are located on the left side or the right side of the electrode array, and the corresponding electrode unit located on the leftmost side or the rightmost side in each row of electrode units is connected with at least one second connecting part. According to the tumor electric field treatment device and the electrode plate, the electrode units are less restrained by the corresponding connecting parts, an operator can adjust the positions of the electrode units more conveniently, and the electrode plate can be attached to the body surface of a patient more closely.

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] Tumor therapeutic electric fields are applied to the tumor site by electrode pads attached to the skin corresponding to the tumor. Chinese invention patent application publication CN114099958A discloses an electrode pad with twenty electrode units. These twenty electrode units are interconnected by connecting parts to form a mesh structure. Each electrode unit has virtually no degree of freedom and cannot be individually adjusted in position. Therefore, when the electrode pad is attached to the patient's skin, wrinkles are easily formed, resulting in gaps between the corresponding electrode units and the patient's skin. These gaps can cause abnormal heating and affect the therapeutic effect of the electric field of the electrode unit.

[0003] Therefore, it is indeed necessary to provide an improved tumor electric field therapy device and electrode pad to solve the problems existing in the prior art. Utility Model Content

[0004] This application provides a tumor electric field therapy device and electrode pads, the electrode pads of which can be applied to the patient's body surface in a comfortable manner.

[0005] This application is achieved through the following technical solution: an electrode sheet for a tumor electric field therapy device, comprising an electrode array, wherein the electrode array is provided with a plurality of electrode units spaced apart, a plurality of connecting portions connecting adjacent two electrode units, and a wiring portion connected to the electrode units or the connecting portions, the plurality of electrode units being distributed in multiple rows and columns, the plurality of connecting portions including a plurality of first connecting portions connecting adjacent two electrode units in the same row and a plurality of second connecting portions connecting adjacent two electrode units in the same column, all of the second connecting portions being located on the left or right side of the electrode array, and each electrode unit in each row, located on the leftmost or rightmost side, is respectively connected to at least one second connecting portion.

[0006] Furthermore, the electrode unit located in the middle row and adjacent to the electrode unit located at the end of the row is connected to a second connection portion.

[0007] Furthermore, the electrode array has twenty electrode units arranged in a six-row, four-column configuration in its spatial structure, with two electrode units in the first and last rows, located in the second and third columns respectively; and four electrode units in each of the four middle rows, located in the first, second, third, and fourth columns respectively.

[0008] Furthermore, all the second connection portions are located on the left side of the electrode array. A second connection portion is provided between the two electrode units located in the first row and second column and the two electrode units located in the second row and second column; a second connection portion is provided between the two electrode units located in the second row and first column and the two electrode units located in the third row and second column; a second connection portion is provided between the two electrode units located in the third row and second column and the two electrode units located in the fourth row and second column and the two electrode units located in the fifth row and first column; and a second connection portion is provided between the two electrode units located in the fifth row and second column and the two electrode units located in the sixth row and second column.

[0009] Furthermore, the wiring portion is provided by the first first connection portion located on the left side of the fourth row extending outward from the electrode array. The two electrode units located in the first column of the fifth row and the second column of the fifth row are disconnected to allow the wiring portion to pass through. A second connection portion is also provided between the two electrode units located in the second column of the fourth row and the second column of the fifth row.

[0010] Furthermore, the four electrode units located in the third and fourth rows and in the second and third columns are all central electrode units, and the other sixteen electrode units are all peripheral electrode units; the electrode array is also provided with eight temperature sensors, of which two temperature sensors are selectively disposed on the two central electrode units, and the other six temperature sensors are selectively disposed on the six peripheral electrode units.

[0011] Furthermore, each of the peripheral electrode units located in the first row, the last row, the two peripheral electrode units located at both ends of the second row, and the two peripheral electrode units located at both ends of the fifth row is equipped with a temperature sensor.

[0012] Furthermore, the two central electrode units located in the third row, second column and the fourth row, third column are each equipped with a temperature sensor.

[0013] Furthermore, a backing is provided, on which the electrode array is centrally attached. The backing has several gaps, which are respectively located between the electrode units in each row of the electrode array.

[0014] This application also provides the following technical solution: a tumor electric field therapy device, including any of the aforementioned electrode sheets.

[0015] The electrode pads of the tumor electric field therapy device of this application have fewer constraints on the electrode units due to the connection part connecting the electrode units. The operator can more easily adjust the position of each electrode unit so that the electrode pads can be more closely attached to the patient's body surface.

[0016] 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

[0017] Figure 1 This is a three-dimensional assembly diagram of the electrode pads of the tumor electric field therapy device of this application;

[0018] Figure 2 for Figure 1 A plan view of the electrode pads; the adhesive parts have been removed for easier observation.

[0019] Figure 3 for Figure 1 3D exploded view of the electrode sheet;

[0020] Figure 4 for Figure 2 An exploded three-dimensional view of the electrode array of the electrode sheet in the image;

[0021] Figure 5 for Figure 2 A plan view of the electrode array of the electrode sheet in the image;

[0022] Figure 6 for Figure 4 Front wiring diagram of the flexible circuit board for the electrode array;

[0023] Figure 7 for Figure 6 A magnified view of a section at point A in the middle;

[0024] Figure 8 for Figure 4 Reverse wiring diagram of the flexible circuit board with electrode array in the middle;

[0025] Figure 9 for Figure 1 The diagram shows the circuit connection between the electrode plates and the adapter.

[0026] Explanation of reference numerals in the attached figures:

[0027] Electrode sheet 100, backing 1, wire hole 10, gap 11, electrode array 2, electrode unit 20, peripheral electrode unit 20A, central electrode unit 20B, flexible circuit board 21, main body 211, connecting part 212, first connecting part 2121, second connecting part 2122, wiring part 213, gold finger 2131, first conductive via 2132, second conductive via 2133, third conductive via 2134, conductive sheet 214, pad 215, ground pad 215A, signal pad 215B, conductive pad, etc. Electrical trace 216, AC trace 216A, ground trace 216B, first branch 2161B, second branch 2162B, signal trace 216C, high dielectric sheet 22, opening 221, insulating board 23, temperature sensor 24, ground terminal 241, signal terminal 242, support 3, through hole 31, adhesive 4, adapter 200, controller 201, analog-to-digital converter 202, communication unit 203, voltage divider resistor 204, power module 205, AC line 206, grounding wire 207, connecting wire 208. Detailed Implementation

[0028] 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.

[0029] refer to Figure 1 and Figure 9 As shown, the tumor electric field therapy device of this application includes multiple pairs of electrode patches 100, an adapter 200, and an electric field generator (not shown). The adapter 200 electrically connects each electrode patch 100 to the electric field generator (not shown). The pairs of electrode patches 100 are applied to the body surface corresponding to the tumor site of the patient, such as the chest or abdomen. The alternating current signal output by the electric field generator (not shown) is transmitted to each electrode patch 100 through the adapter 200, so that an alternating electric field that can act on the tumor site of the patient is formed between each pair of electrode patches 100, so as to perform tumor electric field therapy on the patient.

[0030] refer to Figure 2 and Figure 3As shown, the electrode pad 100 includes a flexible backing 1, an electrode array 2, multiple supports 3, and multiple adhesive members 4. The backing 1 serves as the substrate structure of the electrode pad 100, and is generally octagonal in shape. It can be made of a mesh material with properties such as flexibility, breathability, insulation, and sterilization, such as non-woven fabric. A biocompatible adhesive is applied to the front side of the backing 1 facing the patient's body surface, allowing it to adhere tightly to the patient's skin. The electrode array 2 is centrally attached to the front side of the backing 2. The electrode array 2 has several electrode units 20 arranged in multiple rows and columns. The electrode units 20 apply alternating electrical signals to the patient to interfere with or inhibit the mitosis of tumor cells. The supports 3 are strip-shaped flexible foam with two through holes 31 to avoid the electrode units 20. The supports 3 are adhered to the backing 2 and surround two electrode units 20 in the same row to protect each electrode unit 20. The adhesive piece 4 is in the shape of a strip. The adhesive piece 4 can be a conductive hydrogel with adhesive on both sides. One side covers the two electrode units 20 and the corresponding support 3 in the same row, and the other side adheres to the patient's body surface. It can absorb sweat on the skin surface and relieve discomfort on the skin surface.

[0031] refer to Figure 3 and Figure 4 As shown, the electrode array 2 includes a flexible circuit board 21. The flexible circuit board 21 includes several main body portions 211, several connecting portions 212, and wiring portions 213. The main body portions 211 are circular and connected to each other through the connecting portions 212. The wiring portions 213 are electrically connected to the adapter 200 through wires (not shown). The electrode array 2 also includes a high-dielectric sheet 22 disposed on the front side of each main body portion 211. The high-dielectric sheet 22 is a ceramic sheet with a high dielectric constant. The high-dielectric sheet 22 is soldered to the main body portion 211 and electrically connected to receive the AC signal transmitted by the flexible circuit board 21. The main body portion 211 and the high-dielectric sheet 22 together form the aforementioned electrode unit 20. The several connecting portions 212 connect these electrode units 20 into one unit. The electrode array 2 also includes an insulating plate 23 adhered to the back side of each main body portion 211. The insulating plate 23 can strengthen the main body portion 211 and facilitate the soldering operation between the main body portion 211 and the high-dielectric sheet 22. The electrode array 2 is also provided with several temperature sensors 24. The temperature sensors 24 are welded and fixed to the main body 211 and sealed with sealant after welding. The high dielectric sheet 22 has an opening 221 at its center to accommodate the temperature sensors 24. The temperature sensors 24 are used to monitor the temperature of the adhesive 4, and thus can monitor the temperature of the patient's body surface that is in contact with the adhesive 4.

[0032] The following is for reference. Figure 5As shown, in this embodiment, the electrode array 2 has twenty electrode units 20 arranged in six rows and four columns in a spatial structure. The first and last rows each have two electrode units 20, located in the second and third columns respectively. The middle four rows each have four electrode units 20, located in the first, second, third and fourth columns respectively. It can be understood that the positional distribution of the electrode units 20 is the same as the positional distribution of the main body 211.

[0033] The connecting portion 212 is arranged in a strip shape. The plurality of connecting portions 212 include a plurality of first connecting portions 2121 connecting two adjacent electrode units 20 located in the same row and a plurality of second connecting portions 2122 connecting two adjacent electrode units 20 located in the same column. All the second connecting portions 2122 are located on the left or right side of the electrode array 2. In this embodiment, all the second connection portions 2122 are located on the left side of the electrode array 2. Specifically, a second connection portion 2122 is provided between two electrode units 20 located in the first row and second column and the second row and second column, a second connection portion 2122 is provided between two electrode units 20 located in the second row and first column and the third row and first column, a second connection portion 2122 is provided between two electrode units 20 located in the third row and second column and the fourth row and second column, a second connection portion 2122 is provided between two electrode units 20 located in the fourth row and first column and the fifth row and first column, a second connection portion 2122 is provided between two electrode units 20 located in the fourth row and second column and the fifth row and second column, and a second connection portion 2122 is provided between two electrode units 20 located in the fifth row and second column and the sixth row and second column.

[0034] The wiring portion 213 extends downward from the first connecting portion 2121 on the far left of the fourth row. The wiring portion 213 utilizes the open space (not labeled) between the electrode units 20, without increasing the size or manufacturing cost of the flexible circuit board 21. In addition, the free end of the wiring portion 213 is close to the edge of the flexible circuit board 21 to facilitate the connection of wires (not shown). The connection position between the wiring portion 213 and the connecting portion 212 is close to the middle of the flexible circuit board 21, which facilitates wiring on the flexible circuit board 21.

[0035] Because of the position of the wiring part 213, there is no first connecting part 2121 between the first electrode unit 20 and the second electrode unit 20 on the left side of the fifth row, and they are disconnected to allow the wiring part 213 to pass through. Therefore, there is another second connecting part 2122 between the second electrode unit 20 on the left side of the fifth row and the second electrode unit 20 on the left side of the fourth row. That is, because there is no first connecting part 2121 between the first electrode unit 20 and the second electrode unit 20 on the left side of the fifth row, these two electrode units 20 are respectively connected to the corresponding electrode unit 20 in the fourth row by a second connecting part 2122.

[0036] All the second connecting parts 2122 are located on the left side of the electrode array 2. This satisfies the wiring and structural connection requirements while reducing the constraints imposed by the second connecting parts 2122 on each electrode unit 20. It also allows for easier adjustment of the position of each electrode unit 20, enabling the electrode pad 100 to fit more snugly onto the patient's body surface. Combined with... Figure 1 and Figure 2 As shown, the backing 1 has six slits 11 in the open space (not labeled) between each adjacent row of electrode units 20 in the electrode array 2. Each slit 11 has one end opposite to the second connecting portion 2122 between adjacent rows of electrode units 20, which passes through the outer edge of the backing 1 and is curved. This design increases the freedom of each row of electrode units 20 and allows for independent adjustment, enabling the electrode pads 100 to fit more snugly onto the patient's skin. The backing 1 also has a threading hole 10 at the end of the wiring portion 213. The threading hole 10 allows one end of a wire (not shown) to pass through and electrically connect to the wiring portion 213, preventing the wire (not shown) from being stuck between the backing 1 and the skin, thus ensuring a tight fit between the electrode pads 100 and the skin. This further prevents air from entering between the electrode array 2 and the skin, increasing the impedance between the electrode array 2 and the skin, and thus preventing increased heat generation from the electrode array 2, which could cause low-temperature burns.

[0037] Back Figure 5 and Figure 6 As shown, in this embodiment, there are only eight temperature sensors 24, meaning that the temperature sensors 24 are selectively disposed on the corresponding electrode units 20. The twenty electrode units 20 of the electrode array 2 are defined as peripheral electrode units 20A and central electrode units 20B according to their positions. Specifically, the four electrode units 20 located in the third and fourth rows and in the second and third columns are all central electrode units 20B, and the other sixteen electrode units 20 are peripheral electrode units 20A. Six of the sixteen peripheral electrode units 20A each have one temperature sensor 24. Specifically, the electrode unit 20 located in the first row and second column, the electrode unit 20 located in the last row and third column, the two electrode units 20 located at both ends of the second row, and the two electrode units 20 located at both ends of the fifth row each have one temperature sensor 24. In addition, there are two central electrode units 20B each have one temperature sensor 24. Specifically, the two electrode units 20 located in the third row and second column and the fourth row and third column each have one temperature sensor 24. The distribution of the eight temperature sensors 24 on the electrode array 2 follows these rules: 1. All temperature sensors 24 are centrally symmetrically distributed; 2. Each row has at least one electrode unit equipped with a temperature sensor 24; 3. At least two central electrode units 20B are equipped with temperature sensors 24; 4. At least one corresponding peripheral electrode unit 20A at each of the four corners of the electrode array 2 is equipped with a temperature sensor 24.

[0038] Due to edge effects, the peripheral electrode units 20A of electrode array 2 have higher temperatures during operation. The peripheral electrode units 20A located at the corners of electrode array 2 (including the first and last rows, and the two ends of the second and fifth rows, totaling eight electrode units 20) have the highest temperatures, while the central electrode units 20B have the lowest temperatures. The temperature sensors 24 of this application, using the above distribution, can simultaneously monitor the temperatures of both peripheral electrode units 20A and central electrode units 20B. If the temperature of peripheral electrode units 20A exceeds a temperature threshold, the electric field strength can be reduced or the electric field can be shut off to avoid low-temperature burns to the patient. If the temperature of peripheral electrode units 20A does not exceed a temperature threshold, and the temperature of central electrode units 20B is below another temperature threshold, the electric field strength can be increased to enhance the therapeutic effect. Although electrode array 2 does not have a temperature sensor 24 on every electrode unit 20, it still achieves comprehensive temperature measurement. The reduction in the number of temperature sensors 24 also simplifies the wiring scheme of the flexible circuit board 21.

[0039] The following is combined Figures 6 to 8 The diagram illustrates the wiring scheme of the flexible circuit board 21 of the electrode array 2.

[0040] refer to Figure 6 and Figure 7 As shown, the main body 211 of the flexible circuit board 21 has a conductive sheet 214 on its front side, and a high-dielectric sheet 22 is soldered and fixed to the conductive sheet 214. The wiring portion 213 of the flexible circuit board 21 has a row of five gold fingers 2131 on both its front and back sides. Each gold finger 2131 has two metallized vias (not shown) penetrating the wiring portion 213 at both ends to strengthen the fixation between the gold fingers 2131 and the wiring portion 213. The flexible circuit board 21 has a number of conductive traces 216, including an AC trace 216A on its front side. Specifically, each connection portion 212 has two parallel AC traces 216A on its front side, and the AC traces 216A on the front side of each connection portion 212 extend to the conductive sheets 214 on the main body 211 of the two electrode units 20 connected at both ends of the connection portion 212. The aforementioned multiple AC traces 216A converge at the wiring section 213 via the corresponding connecting part 212 and the main body part 211 and are connected to the leftmost gold finger 2131 of the wiring section 213.

[0041] Combination Figure 8 and Figure 9 As shown, the temperature sensor 24 has a ground terminal 241 and a signal terminal 242 (see figure). Figure 8The electrode unit 20, which is equipped with a temperature sensor 24, has a pair of pads 215 on the front side of its main body 211. Each pair of pads 215 includes a ground pad 215A that is soldered to the ground terminal 241 and a signal pad 215B that is soldered to the signal terminal 242. Each ground pad 215A and each signal pad 215B has a pair of metallized vias (unlabeled) penetrating the main body 211 at one end. The conductive traces 216 also include eight signal traces 216C arranged on the back of the flexible circuit board 21. Five of the signal traces 216C are directly led out from the five gold fingers 2131 on the back of the connector 213, and the other three signal traces 216C are led out from the three gold fingers 2131 in the middle of the front of the connector 213, pass through the metallized vias (unlabeled) of the corresponding gold fingers 2131 to the back of the connector 213. Then, these eight signal traces 216C extend along the corresponding connecting part 212 and the corresponding main body 211, and pass through the metallized vias (unlabeled) of the signal pads 215B on the corresponding main body 211 to connect to each signal pad 215B one by one. The conductive traces 216 also include a ground trace 216B disposed on the back of the flexible circuit board 21. The ground trace 216B is led out from a gold finger 2131 on the right side of the front of the wiring part 213 and passes through a via (unlabeled) to the back of the flexible circuit board 21. Then it extends along each connection part 212 and each main body part 211, and then passes through a via (unlabeled) of the corresponding main body part 211 to connect to each ground pad 215A so as to ground each ground pad 215A.Specifically, taking the back side of the electrode array 2 as the observation surface, the eight signal traces 216C are led out from three gold fingers 2131 located in the middle of the front side of the connector 213 and five gold fingers 2131 located on the back side of the connector 213. Among them, the three signal traces 216C led out from the three gold fingers 2131 located in the middle of the front side of the connector 213 pass through the metallized vias (unlabeled) corresponding to the three gold fingers 2131 to the back side of the flexible circuit board 21, and extend along the corresponding connecting portions 212 and the corresponding main body portions 211 to the electrode units 20 in the second row and first column, the second row and fourth column, and the main body portions 211 of the electrode units 20 in the fourth row and second column on the back side of the electrode array 2, and are connected by corresponding signal soldering. The metallized vias (unlabeled) of pad 215B pass through to the front of the corresponding main body 211 and are electrically connected to the corresponding signal pad 215B. The remaining five signal traces 216C, which are led out from the five gold fingers 2131 on the back of the wiring part 213, extend along the corresponding connection part 212 and the corresponding main body 211 to the main body 211 of the electrode units 20 in the first row and third column, the third row and third column, the fifth row and first column, the fifth row and fourth column, and the sixth row and second column on the back of the electrode array 2. They pass through the metallized vias (unlabeled) of the corresponding signal pad 215B to the front of the corresponding main body 211 and are electrically connected to the corresponding signal pad 215B. It should be noted that the aforementioned eight signal traces 216C are arranged on the back of the flexible circuit board 21 in a non-interfering manner. Signal traces 216C that need to pass through the back of the main body 211 of a non-corresponding electrode unit 20 during their extension are arranged to avoid the metallized vias (unlabeled) of that non-corresponding electrode unit 20. This design ensures that all eight signal traces 216C correspond one-to-one with the signal pads 215B provided on the main body 211 of the corresponding electrode unit 20 and are electrically connected.Ground trace 216B is led out from a gold finger 2131 located on the far right of the front of the connector 213 and passes through the first conductive via 2132 to the back of the flexible circuit board 21. After the ground trace 216B extends to the first connection portion 2121 located between the two electrode units 20 in the fourth row and third column and the fourth row and fourth column on the back of the electrode array 2, it branches into two branches (2161B, 2162B) on the left and right at the first connection portion 2121. The first branch 2161B extends directly to the right to a pair of metallized vias (unlabeled) corresponding to the ground pad 215A of the electrode unit 20 in the fifth row and fourth column on the back of the electrode array 2 and passes through to the front of the flexible circuit board 21, where it is electrically connected to the corresponding ground pad 215A. The second branch 2162B extends to the left to the second connection portion 2122 located between the two electrode units 20 in the third row and third column and the fourth row and third column on the back of the electrode array 2, close to the third row and third column. When the electrode unit 20 is in the column, in order to avoid the multi-signal trace 216C and simplify the wiring as much as possible, the flexible circuit board 21 is provided with a second conductive via 2133 and a third conductive via 2134 at the main body part 211 corresponding to the electrode unit 20 in the third row and third column on the back of the electrode array 2. The second branch 2162B passes through the second conductive via 2133 to the front side of the flexible circuit board 21 and extends to the third conductive via 2134. Then it passes through the third conductive via 2134 to the back side of the flexible circuit board 21 and continues to extend along the corresponding connection part 212 and the corresponding main body part 211 to the main body part 211 corresponding to the other seven electrode units 20, each of which is provided with a temperature sensor 24. It passes through the metallized via (unlabeled) of the corresponding ground pad 215A to the front side of the flexible circuit board 21 and is electrically connected to the corresponding ground pad 215A. With this design, a single ground trace 216B located on the back of the electrode array 2 can connect to all ground pads 215A located on the front of the electrode array 2. Furthermore, this ground trace 216B is jumpered on the front of the flexible circuit board 21 via a second conductive via 2133 and a third conductive via 2134, effectively avoiding multiple signal traces 216C while greatly simplifying wiring. For easy differentiation... Figure 6 and Figure 7The grounding trace 216B is indicated by a red line. The flexible circuit board 21 also has insulating covering layers (not shown) on its front and back sides. The insulating covering layer (not shown) on the front side of the flexible circuit board 21 completely covers the AC trace 216A and exposes each conductive sheet 214. The insulating covering layer on the back side of the flexible circuit board 21 completely covers the grounding trace 216B and the signal trace 216C. Furthermore, the insulating covering layer (not shown) has corresponding windows (not labeled) at the positions of each gold finger 2131 on the wiring portion 213 to expose each gold finger 2131, thereby allowing each gold finger 3231 to be soldered to the corresponding line in the conductor (not shown).

[0042] refer to Figure 9 As shown, Figure 9 This is a circuit connection diagram of the electrode plate 100 and the adapter 200 connected by a connector (not labeled). In the circuit connection, the twenty electrode units 20 of the electrode plate 100 are arranged in four rows and six columns. The AC trace 216A is connected in parallel to the conductive plate 214 of each electrode unit 20. The ground trace 216B is connected in parallel to the ground pad 215A of each temperature sensor 24. Each signal trace 216C is connected to the signal pad 215B of each temperature sensor 24 in a corresponding manner.

[0043] The adapter 200 includes a controller 201, an analog-to-digital converter 202, a communication unit 203, several voltage divider resistors 204, and a power module 205. The power module 205 provides DC power VCC to the controller 201, the analog-to-digital converter 202, and the communication unit 203. The adapter 200 contains an AC line 206, a grounding line 207, and several connecting lines 208. The AC trace 216A of the electrode 100 is connected to the AC signal via the AC line 206. The grounding trace 216B of the electrode 100 is grounded via the grounding line 207. The signal trace 216C of the electrode 100 is connected to the eight acquisition channels A, B, C, D, E, F, G, and H of the analog-to-digital converter 202 via the connecting lines 208. During temperature measurement, the AC signal is turned off, and the analog-to-digital converter 22 can acquire the temperature signals from all eight temperature sensors 24 at once.

[0044] In the electrode pad 100 of the tumor electric field therapy device of this application, each electrode unit 20 is less constrained by the connecting part 212, and there is more open space between each adjacent row of electrode units 20. The operator can adjust the position of each row of electrode units 20 more flexibly, so that the electrode pad 100 can be more closely attached to the patient's body surface. In addition, eight temperature sensors are selectively set on these twenty electrode units 20, which can realize comprehensive temperature measurement and simplify the wiring scheme of the flexible circuit board 21.

[0045] The above description is merely a preferred embodiment of this application and is 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 pad for a tumor electric field therapy device, comprising an electrode array, the electrode array having a plurality of electrode units spaced apart, a plurality of connecting portions connecting adjacent electrode units, and wiring portions connected to the electrode units or the connecting portions, characterized in that, The electrode units are arranged in multiple rows and columns. The connecting parts include a first connecting part that connects two adjacent electrode units in the same row and a second connecting part that connects two adjacent electrode units in the same column. All the second connecting parts are located on the left or right side of the electrode array. The corresponding electrode unit located on the leftmost or rightmost side of each row of electrode units is connected to at least one second connecting part.

2. The electrode sheet according to claim 1, characterized in that, The electrode unit located in the middle row and adjacent to the electrode unit located at the end of the row is connected to a second connection portion.

3. The electrode sheet according to claim 1, characterized in that, The electrode array has twenty electrode units arranged in six rows and four columns in a spatial structure. The first and last rows each have two electrode units, located in the second and third columns, respectively. The middle four rows each have four electrode units, located in the first, second, third, and fourth columns, respectively.

4. The electrode sheet according to claim 3, characterized in that, All the second connection portions are located on the left side of the electrode array. A second connection portion is provided between the two electrode units located in the first row and second column and the two electrode units located in the second row and second column. A second connection portion is provided between the two electrode units located in the second row and first column and the two electrode units located in the third row and second column and the two electrode units located in the fourth row and second column. A second connection portion is provided between the two electrode units located in the fourth row and first column and the two electrode units located in the fifth row and first column. A second connection portion is provided between the two electrode units located in the fifth row and second column and the two electrode units located in the sixth row and second column.

5. The electrode sheet according to claim 4, characterized in that, The wiring portion is provided by the first first connection portion located on the left side of the fourth row extending outward from the electrode array. The two electrode units located in the first column of the fifth row and the second column of the fifth row are disconnected to allow the wiring portion to pass through. A second connection portion is provided between the two electrode units located in the second column of the fourth row and the second column of the fifth row.

6. The electrode sheet according to claim 3, characterized in that, The four electrode units located in the third and fourth rows and in the second and third columns are all central electrode units, and the other sixteen electrode units are all peripheral electrode units; the electrode array is also provided with eight temperature sensors, of which two temperature sensors are selectively disposed on two of the two central electrode units, and the other six temperature sensors are selectively disposed on six of the peripheral electrode units.

7. The electrode sheet according to claim 6, characterized in that, Each of the peripheral electrode units located in the first row, the last row, the two peripheral electrode units located at both ends of the second row, and the two peripheral electrode units located at both ends of the fifth row is equipped with a temperature sensor.

8. The electrode sheet according to claim 6, characterized in that, The two central electrode units located in the third row, second column and the fourth row, third column are each equipped with a temperature sensor.

9. The electrode sheet according to claim 1, characterized in that, It also has a backing, on which the electrode array is centrally attached. The backing has several gaps, which are located between the electrode units in each row of the electrode array.

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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