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 a plurality of electrode units and a flexible circuit board, the plurality of electrode units are divided into a plurality of row groups and a plurality of column groups, the flexible circuit board is configured to allow the plurality of electrode units to be arranged on the flexible circuit board at intervals, and a plurality of conductive traces are embedded in the flexible circuit board. The plurality of conductive traces comprise a plurality of grounding wires and a plurality of dual-purpose signal wires, and the grounding wires are electrically connected with all the row groups in a one-to-one correspondence mode and are configured to enable all the electrode units in the corresponding row groups to be short-circuited and grounded; the dual-purpose signal lines are electrically connected with all the column groups in a one-to-one correspondence mode and are configured to transmit alternating current electric signals to all the electrode units and transmit direct current electric signals to all the electrode units or transmit temperature detection signals detected by all the electrode units in the corresponding column groups. By arranging the dual-purpose signal line, the number of conductive traces on the electrode plate can be reduced, and then the number of wire cores of wires connected with the electrode plate is reduced.

Description

Technical Field

[0001] This application relates to tumor treating fields (TTF) technology, and more particularly to a tumor treating field device and its electrode pads. Background Technology

[0002] Tumor electric field therapy is a treatment that uses low-intensity, medium-to-high-frequency alternating electric fields to prevent the formation of spindle microtubules during mitosis in certain tumor cells, inhibit the separation of intracellular organelles during cell division, and induce apoptosis in mitotic cells, thereby achieving the therapeutic effect on tumors.

[0003] Compared to traditional cancer treatments, TTF has an innovative mechanism of action. Certain physiological characteristics of tumor cells, such as their geometry and high-frequency mitosis, make them susceptible to TTF. TTF disrupts the normal aggregation of microtubules by applying directional forces to intracellular polar particles (such as macromolecules and organelles). These processes can lead to physical damage to the cell membrane and apoptosis. During the telophase of mitosis, the morphology of the cleavage groove leads to an uneven distribution of the electric field around it. Under the influence of TTF, the electric field strength at the cleavage groove is significantly enhanced, causing charged substances in the cell to move towards the cleavage groove, interfering with or even destroying cell structure formation, ultimately leading to cell division failure and apoptosis.

[0004] In existing tumor electric field therapy devices, an electric field application device transmits an alternating current signal for tumor electric field therapy to electrode pads, which then apply an alternating electric field to the patient's tumor site for tumor electric field therapy. When the tumor treatment electric field is applied to the patient's body, heat accumulates at the application site, causing a corresponding increase in temperature. Therefore, it is necessary to monitor the temperature at the application site. If the temperature becomes too high, the electric field intensity needs to be adjusted promptly to avoid the risk of burns to the patient's skin.

[0005] Tumor electric field therapy devices include at least one pair of electrode pads, each containing multiple electrode units. Even when the same alternating current signal is applied to each electrode unit, the heat generated on each unit will vary depending on its location. This means the temperature of each electrode unit across the entire electrode pad will not be completely uniform. Consequently, some electrode units may exceed a preset temperature while others remain at a normal temperature. To ensure a sufficiently long application time for tumor electric field therapy while avoiding low-temperature burns to the patient's skin, individual control of overheated electrode units is necessary. However, with existing electrode pads, individual control of electrode units requires a conductive trace for each unit within the electrode pad's substrate. This increases the number of conductive traces within the substrate, making the electrode pad less flexible, and also thickens the cables connecting to the electrode pad, increasing its overall weight and hindering proper application.

[0006] Therefore, it is necessary to provide an electrode sheet, a tumor electric field therapy device, and its electrode sheet that use fewer conductive traces to control multiple electrode units in a partitioned manner. Utility Model Content

[0007] One objective of this application is to provide a tumor electric field therapy device and electrode pads to solve or eliminate problems in related technologies.

[0008] To achieve the above objectives, this application provides the following technical solution: an electrode sheet for tumor electric field therapy, comprising: multiple electrode units, the multiple electrode units being divided into multiple row groups and multiple column groups, wherein the number of row groups is 2 and the number of column groups is 5, or both the number of row groups and the number of column groups are 3; and a flexible circuit board configured to allow the multiple electrode units to be spaced apart thereon, wherein multiple conductive traces are embedded therein, the multiple conductive traces including: multiple grounding lines, the grounding lines being electrically connected to each row group of the multiple electrode units in a one-to-one correspondence, each grounding line being configured to short-circuit and ground a corresponding part of each electrode unit in the corresponding row group; and multiple dual-purpose signal lines, the dual-purpose signal lines being electrically connected to each column group of the multiple electrode units in a one-to-one correspondence, each dual-purpose signal line being configured to transmit both AC signals and DC signals or temperature detection signals detected by each electrode unit in the corresponding column group to each electrode unit in the corresponding column group.

[0009] The electrode pad for tumor electric field therapy of this application divides multiple electrode units into multiple row groups and multiple column groups. Each electrode unit in each row group is short-circuited through the same grounding wire, and each electrode unit in each column group is connected through the same dual-purpose signal line to transmit both AC and DC signals or to collect temperature detection signals of each electrode unit. This achieves 100% temperature detection coverage of the electrode units without increasing the conductive traces on the electrode pad, avoiding excessive weight on the electrode pad and maintaining the adhesion effect of the electrode pad. In addition, it also reduces the number of wire traces on the flexible circuit board of the electrode pad, simplifies the manufacturing process, and reduces manufacturing costs.

[0010] Furthermore, the number of dual-purpose signal lines is equal to the number of column groups into which the electrode unit is divided, and / or the number of ground lines is equal to the number of row groups into which the electrode unit is divided.

[0011] Furthermore, each of the electrode units includes a dielectric element for transmitting AC signals and a temperature sensor for detecting the temperature of the corresponding electrode unit, having a signal terminal and a ground terminal, wherein the dielectric element of each electrode unit is short-circuited to the signal terminal of the temperature sensor.

[0012] Furthermore, when the electrode unit performs temperature detection, only one of the multiple grounding wires is conducting at any given time, while the other multiple grounding wires are disconnected. All of the multiple dual-purpose signal lines are conducting when the electrode unit performs temperature detection.

[0013] Furthermore, all or part of the dual-purpose signal lines are turned on when an AC signal is applied to the electrode unit, and all the grounding lines are turned off when an AC signal is applied to the electrode unit.

[0014] To achieve the above objectives, this application also provides the following technical solution: a tumor electric field therapy device, comprising at least one pair of the aforementioned electrode sheets.

[0015] Furthermore, it also includes: an electric field generator configured to provide AC signals to a plurality of electrode units of the electrode sheet via the dual-purpose signal lines of the electrode sheet; and an adapter connected between the electrode sheet and the electric field generator, configured to transmit the AC signals generated by the electric field generator to the multiple dual-purpose signal lines of the electrode sheet, and further configured to receive temperature detection signals output by the multiple dual-purpose signal lines of the electrode sheet, the adapter including: one AC signal line configured to provide AC signals to each of the electrode units in the corresponding column group via the multiple dual-purpose signal lines respectively.

[0016] Furthermore, the adapter also includes multiple sets of grounding switches. Each set of grounding switches is electrically connected to a corresponding electrode piece and includes multiple grounding switches. Each of the multiple grounding switches is electrically connected to one of the multiple grounding wires of the corresponding electrode piece and is configured to control the conduction or disconnection of the multiple grounding wires.

[0017] Furthermore, the adapter further includes: multiple sets of analog-to-digital converters, each electrically connected to the multiplexed signal lines of the corresponding electrode pads, and configured to receive the temperature detection signal transmitted by the multiplexed signal lines of the corresponding electrode pads and convert the temperature detection signal from an analog signal to a digital signal. Each set of analog-to-digital converters includes multiple detection channels, each detection channel being used to connect to a corresponding multiplexed signal line among the multiplexed signal lines. It also includes multiple sets of bidirectional switches, each corresponding to one of the electrode pads. Each set of bidirectional switches includes multiple bidirectional switches, each of which is electrically connected to the multiplexed signal lines of the corresponding electrode pads. Each bidirectional switch further has a terminal 1 electrically connected to a corresponding detection channel in the corresponding analog-to-digital converter and a terminal 2 electrically connected to the AC signal line.

[0018] Furthermore, the adapter also includes: a first controller, which is connected to the plurality of grounding switches and the plurality of bidirectional switching switches respectively, and is configured to: sequentially and cyclically control the opening and closing states of the plurality of grounding switches, thereby sequentially and individually energizing each of the multiple grounding wires of the corresponding electrode sheet; and to control the switching states of the plurality of bidirectional switching switches, such that the bidirectional switching switches are set to end 1 to output a temperature detection signal, or set to end 2 to transmit an AC signal.

[0019] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the tumor electric field therapy device of this application;

[0021] Figure 2 This is a schematic diagram of the circuit connection between the electrode sheet and the adapter in the first embodiment of the tumor electric field system of this application;

[0022] Figure 3 for Figure 2 A schematic block diagram of the internal structure of the adapter shown;

[0023] Figure 4 A schematic block diagram of the internal structure of the electric field generator in a tumor electric field therapy device;

[0024] Figure 5 The electrode sheet in the second embodiment of the tumor electric field system and Figure 2 The circuit connection diagram of the adapter is shown below;

[0025] Figure 6 The electrode sheet in the first embodiment of the tumor electric field system and Figure 2 A circuit connection diagram of a modified embodiment of the adapter shown;

[0026] Figure 7 for Figure 6 A schematic block diagram of the internal structure of the adapter shown;

[0027] Figure 8 The electrode sheet in the second embodiment of the tumor electric field system and Figure 2 A circuit connection diagram of yet another variant embodiment of the adapter shown;

[0028] Figure 9 for Figure 8 The diagram shows a schematic block diagram of the internal structure of the adapter.

[0029] Explanation of reference numerals in the attached figures:

[0030] Tumor electric field therapy device 100, electrode sheet 10, flexible circuit board 11, electrode unit 12, first cable 13, temperature sensor 14, grounding terminal 14-1, signal terminal 14-2, dielectric element 15, diode 16, grounding wire 18, first grounding wire 18-1, second grounding wire 18-2, third grounding wire 18-3, fourth grounding wire 18-4, dual-purpose signal line 19, first dual-purpose signal line 19-1, second dual-purpose signal line 19-2, third dual-purpose signal line 19-3, fourth dual-purpose signal line 19-4, fifth dual-purpose signal line 19-5, adapter 20, second cable 21, first controller 22, analog-to-digital converter 23, voltage divider resistor 24, grounding switch 25, first connection Grounding switch 25-1, second grounding switch 25-2, third grounding switch 25-3, fourth grounding switch 25-4, bidirectional switch 26, first bidirectional switch 26-1, second bidirectional switch 26-2, third bidirectional switch 26-3, fourth bidirectional switch 26-4, fifth bidirectional switch 26-5, first communication unit 27, AC signal line 28, first power module 29, electric field generator 30, second power module 31, second controller 32, second communication unit 33, AC signal generator 34, AC signal switch 35, first connector 40, first plug 41, first socket 42, second connector 50, second plug 51, second socket 52. Detailed Implementation

[0031] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0032] Figure 1 The diagram shown is a schematic representation of the tumor electric field therapy device 100 of this application. Figure 1 As shown, the tumor electric field therapy device 100 includes: at least one pair of electrode pads 10, an adapter 20 connected to the electrode pads 10, and an electric field generator 30 connected to the adapter 20. The electric field generator 30 supplies power to the electrode pads 10, causing the electrode pads 10 to generate a therapeutic electric field. The adapter 20 is electrically connected between the electrode pads 10 and the electric field generator 30, for transmitting the alternating current signal generated by the electric field generator 30 to the electrode pads 10. That is, the electric field generator 30 is capable of generating an alternating current signal, which is transmitted to each electrode pad 10 through the adapter 20, thereby generating a therapeutic electric field for treating tumors between the same pair of electrode pads 10. Figure 1As shown, in this embodiment, there are four electrode pads 10. Each electrode pad 10 includes a plurality of identical electrode units 12, and each electrode unit 12 is electrically connected to the adapter 20. Each electrode pad 10 has nine electrode units 12. In other embodiments, the tumor electric field therapy device 100 may have more or fewer electrode pads 10. In other embodiments, each pair of electrode pads 10 has the same number of electrode units 12, and different pairs of electrode pads 10 may have different numbers of electrode units 12.

[0033] Figure 2 This is a schematic diagram of the circuit connection between the electrode plate 10 and the adapter 20 in the first embodiment of the tumor electric field therapy device 100. It is worth noting that: Figure 2 The diagram shows the circuit layout of electrode unit 12. To more clearly illustrate the electrical connection between electrode piece 10 and adapter 20, Figure 2 The arrangement of electrode units 12 shown does not represent their spatial arrangement. (Combined with...) Figure 1 as well as Figure 2 The electrode sheet 10 includes: a flexible circuit board 11, multiple electrode units 12 electrically connected to the flexible circuit board 11 at intervals, and a first cable 13 electrically connected to the flexible circuit board 11. The flexible circuit board 11 has embedded multiple conductive traces (18, 19), including multiple grounding lines 18 and multiple dual-purpose signal lines 19. The first cable 13 has multi-core conductors (not shown), which are electrically connected one-to-one with the multiple grounding lines 18 and the multiple dual-purpose signal lines 19 of the flexible circuit board 11. The total number of grounding lines 18 and dual-purpose signal lines 19 embedded in the flexible circuit board 11 does not exceed 10. Therefore, the number of conductors in the first cable 13 does not exceed 10.

[0034] In this embodiment, each electrode sheet 10 has nine electrode units 12. These nine electrode units 12 are grouped in the order of 1 to 9 in the circuit connection, forming two row groups and five column groups, i.e., the nine electrode units 12 are arranged in two rows and five columns in the circuit connection. Each electrode unit 12 includes a dielectric element 15 and a temperature sensor 14. The temperature sensor 14 includes a ground terminal 14-1 and a signal terminal 14-2. Both the dielectric element 15 and the temperature sensor 14 are soldered onto the flexible circuit board 11, and the dielectric element 15 is short-circuited to the signal terminal 14-2 of the corresponding temperature sensor 14. Since multiple temperature sensors 14 are correspondingly arranged with multiple electrode units 12, the multiple temperature sensors 14 are also arranged in two rows and five columns in the circuit connection. It should be noted that this arrangement is for clearer illustration of the electrical connection between the electrode sheet 10 and the adapter 20, and does not represent the spatial arrangement of the electrode units 12. The spatial structure may be as follows: Figure 1The structure shown is generally array-like, but it can also be other structures, such as petal-shaped or scattering-shaped, and can be regular or irregular. The dielectric element 15 is configured to apply an alternating electric field to the patient's tumor site. The temperature sensor 14 is configured to detect the temperature of the patient's body surface in contact with the electrode pad 10 and output a temperature detection signal to the adapter 20. In this embodiment, the multiplexed dual-purpose signal lines 19 of the flexible circuit board 11 are respectively arranged in a one-to-one correspondence with multiple columns of the electrode units 12, and are configured to transmit the AC signal generated by the electric field generator 30 to the dielectric element 15 in each electrode unit 12 in the corresponding column. That is, the dielectric elements 15 located in the same column are all short-circuited through the same dual-purpose signal line 19 of the flexible circuit board 11, and the dielectric elements 15 located in different columns are connected in parallel through different dual-purpose signal lines 19 of the flexible circuit board 11. The dual-purpose signal lines 19 of the flexible circuit board 11 are electrically connected to the first cable 13, and then electrically connected to the electric field generator 30 via the adapter 20. Furthermore, the dual-purpose signal line 19 of the flexible circuit board 11 receives the AC signal generated by the electric field generator 30 through the first cable 13 and the adapter 20.

[0035] Multiple grounding wires 18 are respectively configured to correspond one-to-one with multiple rows of electrode units 12. Each grounding wire 18 is used to sequentially short-circuit and ground the temperature sensor 14 of each corresponding electrode unit 12 in each row. That is, the grounding terminals 14-1 of multiple temperature sensors 14 located in the same row are all short-circuited through the same grounding wire 18 of the flexible circuit board 11, and the grounding terminals 14-1 of temperature sensors 14 located in different row groups are connected in parallel through different grounding wires 18 of the flexible circuit board 11. During the temperature detection period, only one of the multiple grounding wires 18 is conductive at any given time, while the others are disconnected.

[0036] Each of the multiplexed dual-purpose signal lines 19 is further configured to short-connect the signal terminal 14-2 of the temperature sensor 14 of at most one electrode unit 12 in each row group to an external device for receiving detection signals. The signal terminals 14-2 of the temperature sensor 14 connected to each of the multiplexed dual-purpose signal lines 19 are different to avoid subsequent duplicate signal outputs from the dual-purpose signal lines 19. That is, when the number of electrode units 12 in a row group is the same as the number of dual-purpose signal lines 19, each dual-purpose signal line 19 is electrically connected to the signal terminal 14-2 of the temperature sensor 14 of a different electrode unit 12 in that row group; when the number of electrode units 12 in a row group is less than the number of dual-purpose signal lines 19, at least one dual-purpose signal line 19 is not electrically connected to the signal terminal 14-2 of the temperature sensor 14 of the electrode unit 12, and the remaining dual-purpose signal lines 19 are electrically connected to the signal terminal 14-2 of the temperature sensor 14 of a different electrode unit 12 in that row group. In this embodiment, the external device used to receive the detection signal is an adapter 20. The signal terminals 14-2 of multiple temperature sensors 14 located in different columns are connected in parallel through different dual-purpose signal lines 19 of the flexible circuit board 11. The signal terminals 14-2 of multiple temperature sensors 14 located in the same column are all shorted to the same dual-purpose signal line 19 of the flexible circuit board 11.

[0037] In this embodiment, with a temperature sensor 14 configured in each electrode unit 12 for temperature detection, the above-described circuit design reduces the number of wires in the first cable 13, preventing the cable from becoming thicker and harder, thus increasing the difficulty of cable fixation; simultaneously, it avoids the increased number of wires in the first cable 13 affecting the adhesion between the electrode sheet 10 and the corresponding body surface of the patient's tumor site. The flexible circuit board 11 has a total of 7 embedded grounding wires 18 and dual-purpose signal lines 19. Specifically, in this embodiment, the flexible circuit board 11 has 2 embedded grounding wires 18 and 5 embedded dual-purpose signal lines 19. In other embodiments, the flexible circuit board 11 has 3 embedded grounding wires 18 and 3 embedded dual-purpose signal lines 19. In the tumor electric field therapy device 100, the number of conductive lines electrically connected to the grounding wire 18 is related to the number of rows M of the electrode unit 12, which is greater than or equal to the number of rows M, where M is a positive integer. In the tumor electric field therapy device 100, the number of conductive lines electrically connected to the dual-purpose signal lines 19 is related to the number of columns N of the electrode unit 12, and is greater than or equal to the number of columns N of the electrode unit 12, where N is a positive integer. The number of lines L embedded in the flexible circuit board 11 of the electrode sheet 10 is equal to the sum of the number of grounding lines 18 and the number of dual-purpose signal lines 19. In this embodiment, the number of grounding lines 18 is equal to the number of rows M of the electrode unit 12; the number of dual-purpose signal lines 19 is equal to the number of columns N of the electrode unit 12.

[0038] A plurality of electrode units 12 are arranged at intervals on the flexible circuit board 11 in a substantially two-dimensional array form. As Figure 1 shown, the electrode sheet 10 in this embodiment includes nine electrode units 12 and nine temperature sensors 14 corresponding to the electrode units 12. The nine electrode units 12 are arranged in a three-row and three-column array, with three electrode units 12 arranged in each row and each column, substantially in the shape of a "king" character. In some other embodiments, the nine electrode units 12 can also be arranged in other ways. Of course, in some other embodiments, the electrode sheet 10 can also have other numbers of electrode units 12. In short, the implementation of this application is not limited by the number and arrangement form of the electrode units 12 of the electrode sheet 10.

[0039] Each electrode unit 12 includes a dielectric element 15 and a temperature sensor 14. In Figure 2 the shown embodiment, the dielectric element 15 can be a dielectric ceramic sheet or a polymer dielectric layer made of a polymer material. The temperature sensor 14 can be a thermistor element. Of course, in some other embodiments, the temperature sensor 14 can also be other temperature sensors other than thermistors, and it can be arranged at any position on the electrode unit 12. In this embodiment, each dielectric element 15 has a through hole (not labeled) penetrating through the middle, and a corresponding temperature sensor 14 is accommodated in the through hole (not labeled) of each dielectric element 15. Each electrode unit 12 can also include a diode 16. The diode 16 is connected in series with the temperature sensor 14 of the same electrode unit 12, and it can prevent the reverse inflow of current to prevent the detection signal from other electrode units 12 from affecting this temperature sensor 14.

[0040] Figure 2As shown, the electrode plate 10 in this embodiment includes two grounding wires 18, each grounding wire 18 being used to ground the grounding terminals 14-1 of the temperature sensors 14 in the same row group. The two grounding wires 18 of the electrode plate 10 are a first grounding wire 18-1 and a second grounding wire 18-2. In the two rows of the electrode plate 10, the first row group includes electrode units 12-1 to 12-5, and the second row group includes electrode units 12-6 to 12-9. Specifically, the first grounding wire 18-1 is used to ground electrode units 12-1 to 12-5 in the first row group; the second grounding wire 18-2 is used to ground electrode units 12-6 to 12-9 in the second row group. It should be noted that these grounding wires 18 can be selectively closed or opened, which can be achieved by connecting each grounding wire 18 in series with a switch, which will be described in detail below. The aforementioned "grounding electrode unit 12" can refer to grounding the grounding terminal 14-1 of the temperature sensor 14 in electrode unit 12, or it can refer to the diode 16 being connected in series with the temperature sensor 14 of the same electrode unit 12 and grounded together. In short, each grounding wire 18 short-circuits and grounds the grounding terminals 14-1 of the temperature sensors 14 of each electrode unit 12 in each row group.

[0041] Figure 2As shown, the electrode sheet 10 in this embodiment also includes five dual-purpose signal lines 19. One end of each dual-purpose signal line 19 is connected to each electrode unit 12 in each row group, and the other end is connected to an adapter 20 for receiving temperature detection signals or transmitting AC signals. That is, for each row group, each dual-purpose signal line 19 can be selectively connected to one of the electrode units 12 or not connected to any of the electrode units 12 in that row group to avoid subsequent repetitive signal output from the dual-purpose signal line 19. Specifically, the five dual-purpose signal lines 19 of the electrode sheet 10 include a first dual-purpose signal line 19-1, a second dual-purpose signal line 19-2, a third dual-purpose signal line 19-3, a fourth dual-purpose signal line 19-4, and a fifth dual-purpose signal line 19-5. One end of the first dual-purpose signal line 19-1 is simultaneously connected to the dielectric element 15 of each of the two electrode units 12 (electrode unit 12-1 and electrode unit 12-6) and the signal terminal 14-2 of each of their respective temperature sensors 14; one end of the second dual-purpose signal line 19-2 is simultaneously connected to the dielectric element 15 of each of the two electrode units 12-2 and electrode unit 12-7 and the signal terminal 14-2 of each of their respective temperature sensors 14; one end of the third dual-purpose signal line 19-3 is simultaneously connected to the dielectric element 15 of each of the two electrode units 12-3 and electrode unit 12-8 and the signal terminal 14-2 of each of their respective temperature sensors 14; one end of the fourth dual-purpose signal line 19-4 is simultaneously connected to the dielectric element 15 of each of the two electrode units 12-4 and electrode unit 12-9 and the signal terminal 14-2 of each of their respective temperature sensors 14; one end of the fifth dual-purpose signal line 19-5 is only connected to the dielectric element 15 of one electrode unit 12 and the signal terminal 14-2 of its respective temperature sensor 14. In short, each dual-purpose signal line 19 shorts in parallel the signal terminals 14-2 of each dielectric element 15 of each electrode unit 12 and each temperature sensor 14 located in the same column group, and is used to connect to external devices. It should be noted that these dual-purpose signal lines 19 can selectively transmit AC signals or receive temperature detection signals. This can be achieved by connecting each dual-purpose signal line 19 in series with a bidirectional switch 26 and coordinating the closing or opening of the grounding wire 18, which will be described in detail below.

[0042] The multi-path grounding wire 18 and the multi-path dual-purpose signal wire 19 are both conductive traces embedded in the flexible circuit board 11. The flexible circuit board 11 is electrically connected to the first cable 13. The multi-path grounding wire 18 and the multi-path dual-purpose signal wire 19 embedded in the flexible circuit board 11 are electrically connected to the corresponding wires (not shown) in the first cable 13.

[0043] The tumor electric field therapy device 100 of this embodiment includes at least one pair of electrode pads 10 as described above, an adapter 20 electrically connected to the electrode pads 10, and an electric field generator 30 electrically connected to the adapter 20. The adapter 20 is connected between the electrode pads 10 and the electric field generator 30. The electric field generator 30 provides an alternating current signal to the dielectric elements 15 in the plurality of electrode units 12 of the electrode pads 10 via the adapter 20 and the dual-purpose signal line 19 of the electrode pads 10, or is used to receive temperature detection signals output by the temperature sensors 14 in the plurality of electrode units 12. The adapter 20 is configured to transmit the alternating current signal generated by the electric field generator 30 to the dual-purpose signal line 19 of the electrode pads 10, and is also configured to receive the temperature detection signals output by the multiplex dual-purpose signal line 19 of the electrode pads 10.

[0044] refer to Figure 2As shown, the adapter 20 includes: a first controller 22, multiple sets of analog-to-digital converters 23 connected to the first controller 22, multiple sets of voltage-reducing resistors 24 corresponding to each set of analog-to-digital converters 23, multiple sets of grounding switches 25, multiple sets of bidirectional switching switches 26 corresponding to each set of analog-to-digital converters 23, a first communication unit 27, AC signal lines 28 corresponding to each set of bidirectional switching switches 26, and a first power module 29 connected to the first communication unit 27, the first controller 22, and the multiple sets of analog-to-digital converters 23. The first power module 29 provides DC power VCC to each electronic component of the adapter 20. The adapter 20 also includes multiple circuit lines (unlabeled). These multiple circuit lines (unlabeled) are electrically connected to multiple grounding lines 18 and multiple dual-purpose signal lines 19 within the flexible circuit board 11 of the corresponding electrode plate 10 via first cables 13. The multiple circuit lines (unlabeled) include multiple AC signal lines 28 that transmit AC signals to the corresponding electrode 10 and are electrically connected to the multiple-purpose signal lines 19 in the flexible circuit board 11 of the corresponding electrode 10; multiple circuit lines (unlabeled) that are electrically connected one-to-one to the multiple-purpose signal lines 19 in the flexible circuit board 11 of the corresponding electrode 10 and are used to power each temperature sensor 14 of the electrode 10 or transmit the temperature detection signal of the electrode 10; and multiple circuit lines (unlabeled) that are electrically connected one-to-one to the multiple grounding lines 18 in the flexible circuit board 11 of the corresponding electrode 10. The number L of circuit lines that the adapter 20 is electrically connected to one electrode 10 is equal to the sum of the number of rows M and the number of columns N of the electrode unit 12 of the electrode 10 plus 1; the number H of circuit lines that the adapter 20 is electrically connected to X electrode 10s is equal to X times the number of circuit lines that it is electrically connected to a single electrode 10, that is, H = XL = X*(M+N+1). The number of groups of grounding switches 25 and the number of groups of bidirectional switching switches 26 are both related to the number of electrode plates 10. The number of groups of grounding switches 25 is the same as the number of groups of bidirectional switching switches 26; and is not less than the number of electrode plates 10. Preferably, the number of groups of grounding switches 25 and bidirectional switching switches 26 is the same as the number of electrode plates 10. The following detailed description only takes the electrical connection between an electrode plate 10 with 9 electrode units 12 and the adapter 20 as an example.

[0045] Each group of grounding switches 25 has multiple grounding switches 25, which are respectively connected to the adapter 20 and electrically connected to the circuit lines (unlabeled) corresponding one-to-one with the multiple grounding wires 18 of a corresponding electrode piece 10, and are configured to control the conduction or disconnection of the multiple grounding wires 18. The circuit lines (unlabeled) that are each electrically connected to the multiple grounding wires 18 of the electrode piece 10 are grounded at the end closest to the grounding switch 25. The number of grounding switches 25 in each group of grounding switches 25 is related to the number of grounding wires 18 of the flexible circuit board 11 of the corresponding electrode piece 10. In this embodiment, the two are not equal, and the number of grounding switches 25 in each group of grounding switches 25 is greater than the number of grounding wires 18 of the flexible circuit board 11 of the corresponding electrode piece 10. Figure 2 As shown, in this embodiment, each group of grounding switches 25 includes a first grounding switch 25-1, a second grounding switch 25-2, a third grounding switch 25-3, and a fourth grounding switch 25-4. Each group of multiple grounding switches 25 controls the closing or opening of the corresponding grounding wire 18 of a corresponding electrode piece 10. The first grounding switch 25-1 controls the closing or opening of the first grounding wire 18-1 of the corresponding electrode piece 10, and can cooperate with the corresponding group of bidirectional switching switches 26 to control the energization and de-energization of the temperature sensors 14 of the five electrode units 12 (electrode units 12-1 to 12-5) in the first row of the electrode piece 10; the second grounding switch 25-2 controls the closing or opening of the second grounding wire 18-2 of the electrode piece 10, and can cooperate with the corresponding group of bidirectional switching switches 26 to control the energization and de-energization of the temperature sensors 14 of the five electrode units 12 in the second row of the electrode piece 10. Temperature sensors 14 in the four electrode units 12 (from 2-6 to 12-9) are energized and de-energized. In this embodiment, since the electrode plate 10 only has a first grounding wire 18-1 and a second grounding wire 18-2, only the first grounding switch 25-1 and the second grounding switch 25-2 are electrically connected to the electrode plate 10. The third grounding switch 25-3 and the fourth grounding switch 25-4 are in an idle and disconnected state. That is, the first grounding switch 25-1 and the second grounding switch 25-2 are available, while the third grounding switch 25-3 and the fourth grounding switch 25-4 are idle. The aforementioned grounding switch 25 can be a mechanical switch, such as a relay. The grounding switch 25 can also be an electronic switch, and each grounding switch 25 can be opened and closed by the first controller 22 of the adapter 20.

[0046] In this embodiment, all sets of grounding switches 25 are electronic switches. The first controller 22 is communicatively connected to the multiple sets of grounding switches 25 and is used to sequentially and cyclically control the opening and closing states of multiple grounding switches 25 in each set, thereby sequentially and individually activating each of the multiple grounding wires 18 of the corresponding electrode pad 10 and coordinating with the switching of the corresponding bidirectional switching switch 26 to sequentially and time-divisionally collect the patient's body surface temperature detected by all temperature sensors 14 on the electrode pad 10. The number of grounding switches 25 in each set is greater than or equal to the number of grounding wires 18 on the flexible circuit board 11 of the corresponding electrode pad 10. In this embodiment, the number of grounding switches 25 in each set is greater than the number of grounding wires 18 on the corresponding electrode pad 10.

[0047] Each group of bidirectional switching switches 26 has multiple bidirectional switching switches 26. The multiple bidirectional switching switches 26 in each group are respectively connected to the adapter 20 and electrically connected to the circuit lines (unlabeled) corresponding to the multi-channel dual-purpose signal lines 19 of the corresponding electrode piece 10. The number of bidirectional switching switches 26 in each group is related to the number of dual-purpose signal lines 19 on the flexible circuit board 11 of the corresponding electrode piece 10, and is greater than or equal to the number of dual-purpose signal lines 19 on the flexible circuit board 11 of the corresponding electrode piece 10; in this embodiment, both are equal. Each bidirectional switching switch 26 has two ends labeled 1 and 2. End 1 of the multiple bidirectional switching switches 26 in the same group is electrically connected to the corresponding detection channel in the multiple detection channels of the corresponding group of analog-to-digital converters 23. End 2 of each bidirectional switching switch 26 in the same group is electrically connected to the corresponding AC signal line 28. Each bidirectional switch 26 is configured to control the multiplexer signal line 19 to connect to the corresponding AC signal line 28 to transmit AC signals or to the corresponding detection channel of the corresponding group of analog-to-digital converters 23 to receive temperature detection signals output by the temperature sensor 14.

[0048] like Figure 2As shown, taking the electrical connection of one electrode plate 10 with the adapter 20 as an example, in this embodiment with nine electrode units 12, the multiple bidirectional switching switches 26 are respectively the first bidirectional switching switch 26-1, the second bidirectional switching switch 26-2, the third bidirectional switching switch 26-3, the fourth bidirectional switching switch 26-4, and the fifth bidirectional switching switch 26-5. The multiple bidirectional switching switches 26 in the same group each control the switching of a corresponding dual-purpose signal line 19 of the same electrode plate 10 between transmitting AC power signals and transmitting temperature detection signals. Specifically, the first bidirectional switching switch 26-1 is used to control the switching of the first dual-purpose signal line 19-1 of the corresponding electrode plate 10 between transmitting AC signals and transmitting temperature detection signals, thereby controlling the switching between the conduction of each dielectric element 15 of the electrode unit 12-1 and electrode unit 12-6 in the first column of the electrode plate 10 and the conduction of the signal terminal 14-2 of each temperature sensor 14 of the electrode unit 12-1 and electrode unit 12-6 in the first column of the electrode plate 10, and cooperating with the corresponding first grounding switch 25-1 and second grounding switch 25-2 to enable the first Electrode units 12-1 and 12-6 transmit AC signals to the patient or output temperature detection signals collected by the temperature sensors 14 of the electrode units 12 to the corresponding analog-to-digital converter 23; the second bidirectional switch 26-2 is used to control the switching of the second dual-purpose signal line 19-2 of the corresponding electrode pad 10 between transmitting AC signals and transmitting temperature detection signals, thereby controlling the conduction of each dielectric element 15 of the electrode units 12-2 and 12-7 in the second column of the electrode pad 10 and the conduction of the electrode units 12-2 and 12-7 in the second column of the electrode pad 10. The switching between the conduction of the signal terminals 14-2 of each temperature sensor 14 in the second row of electrode units 12-2 and 12-7 and the corresponding first grounding switch 25-1 and second grounding switch 25-2, enables the second row of electrode units 12-2 and 12-7 to transmit AC signals to the patient or output temperature detection signals collected by the temperature sensors 14 of these electrode units 12 to the corresponding analog-to-digital converter 23; the third bidirectional switching switch 26-3 is used to control the switching between transmitting AC signals and transmitting temperature detection signals on the third dual-purpose signal line 19-3 of the corresponding electrode pad 10, thereby controlling the... The switching between the conduction of each dielectric element 15 of the electrode unit 12-3 and electrode unit 12-8 in the third column of electrode pad 10 and the conduction of the signal terminal 14-2 of each temperature sensor 14 in the third column of electrode unit 12-3 and electrode unit 12-8, and in conjunction with the corresponding first grounding switch 25-1 and second grounding switch 25-2, enables the third column of electrode unit 12-3 and electrode unit 12-8 to transmit AC signals to the patient or output temperature detection signals collected by the temperature sensors 14 of these electrode units 12 to the corresponding analog-to-digital converter 23;The fourth bidirectional switching switch 26-4 is used to control the switching of the fourth dual-purpose signal line 19-4 of the corresponding electrode pad 10 between transmitting AC signals and transmitting temperature detection signals. This controls the switching between the conduction of the dielectric elements 15 of the electrode units 12-4 and 12-9 in the fourth column of the electrode pad 10 and the conduction of the signal terminals 14-2 of the temperature sensors 14 of the electrode units 12-4 and 12-9 in the fourth column. It also cooperates with the corresponding first grounding switch 25-1 and second grounding switch 25-2 to enable the fourth column of electrode units 12-4 and 12-9 to transmit AC signals to the patient or output these electrode units to the corresponding analog-to-digital converter 23. Temperature sensor 14 of electrode 12 collects temperature detection signals; fifth bidirectional switching switch 26-5 is used to control the switching of the fifth dual-purpose signal line 19-5 of the corresponding electrode 10 between transmitting AC signals and transmitting temperature detection signals, thereby controlling the switching between the conduction of dielectric element 15 of electrode unit 12-5 in the fifth column of electrode 10 and the conduction of signal terminal 14-2 of temperature sensor 14 of electrode unit 12-5 in the fifth column of electrode 10, and cooperating with the corresponding first grounding switch 25-1, so that the fifth column of electrode unit 12-5 transmits AC signals to the patient or outputs the temperature detection signals collected by temperature sensor 14 of electrode unit 12 to the corresponding analog-to-digital converter 23. When both ends of each bidirectional switch 26 are on and one end is off, AC signals can be transmitted to the dielectric elements 15 of each electrode unit 12 on the corresponding electrode plate 10. When one end of each bidirectional switch 26 is on and both ends are off, it can cooperate with each grounding switch 25 in the corresponding group of grounding switches 25 to transmit the temperature detection signals collected by the temperature sensors 14 of each electrode unit 12 on the electrode plate 10 in a time-division manner. The bidirectional switch 26 can be a mechanical switch, such as a relay. The bidirectional switch 26 can also be an electronic switch, and each bidirectional switch 26 can be controlled by the first controller 22 of the adapter 20.

[0049] In this embodiment, all of the multiple sets of bidirectional switching switches 26 are electronic switches. The first controller 22 is communicatively connected to the multiple sets of bidirectional switching switches 26 and is used to control the switching of multiple bidirectional switching switches 26 in each set between their respective terminals 1 and 2, and to cooperate with the closing or opening of the corresponding grounding switch 25, so as to continuously monitor the temperature of the patient's body surface detected by all the temperature sensors 14 on the electrode pad 10 or to transmit AC signals to the patient.

[0050] In this embodiment, each group of analog-to-digital converters 23 is electrically connected to one end of each of the multiple bidirectional switching switches 26 in the corresponding group through multiple circuit lines (unlabeled) within the adapter 20, and is configured to receive temperature detection signals transmitted from the multi-purpose signal lines 19 of the corresponding electrode sheet 10, and convert the temperature detection signals from analog signals to digital signals. Each group of analog-to-digital converters 23 includes multiple detection channels A, B, C, D, and E, each detection channel A, B, C, D, and E is used to connect to one corresponding multi-purpose signal line 19 in the multi-purpose signal lines 19 through the corresponding bidirectional switching switch 26. The number of detection channels in each group of analog-to-digital converters 23 is related to the number of bidirectional switching switches 26 in the corresponding group. The number of detection channels in each group of analog-to-digital converters 23 is related to the number of column groups of electrode units 12 of the corresponding electrode sheet 10. Specifically, the number of detection channels in each group of analog-to-digital converters 23 is equal to the number of bidirectional switching switches 26 in the corresponding group of bidirectional switching switches 26, and is not less than the number of column groups of electrode units 12 in the corresponding electrode sheet 10. For example... Figure 2 As shown, each group of analog-to-digital converters 23 includes five detection channels A, B, C, D, and E, which are respectively the first detection channel A, the second detection channel B, the third detection channel C, the fourth detection channel D, and the fifth detection channel E. The first detection channel A is connected to the first dual-purpose signal line 19-1 through terminal 1 of the first bidirectional switch 26-1; the second detection channel B is connected to the second dual-purpose signal line 19-2 through terminal 1 of the second bidirectional switch 26-2; the third detection channel C is connected to the third dual-purpose signal line 19-3 through terminal 1 of the third bidirectional switch 26-3; the fourth detection channel D is connected to the fourth dual-purpose signal line 19-4 through terminal 1 of the fourth bidirectional switch 26-4; and the fifth detection channel E is connected to the fifth dual-purpose signal line 19-5 through terminal 1 of the fifth bidirectional switch 26-5. Each detection channel A, B, C, D, and E is used to receive the temperature detection signal collected by the temperature sensor 14 of the electrode unit 12 connected to the corresponding dual-purpose signal line 19. In addition, each detection channel A, B, C, D, and E is connected to a first power supply module 29 via a corresponding voltage divider resistor 24 in the adapter 20. The first power supply module 29 provides DC power.

[0051] In this embodiment, the first communication unit 27 is configured to acquire digital signals output by multiple sets of analog-to-digital converters 23 and send the digital signals to the electric field generator 30. The electric field generator 30 is also configured to control and adjust the voltage, current, or power of the AC signal provided to the multiple electrode units 12 of the electrode sheet 10 according to the received digital signals. For example, when any of the received digital signals exceeds a preset threshold, it indicates that the temperature at the corresponding dielectric element 15 application position detected by at least one temperature sensor 14 in the electrode sheet 10 exceeds the preset threshold temperature (e.g., 41°C, 42°C, etc.). At this time, the voltage of the AC signal output by the electric field generator 30 can be appropriately reduced to avoid the electrode units 12 of the electrode sheet 10 becoming too hot when the AC signal is applied, causing low-temperature burns to the patient's skin. The preset threshold temperature and preset threshold can be determined according to human safety thresholds. The first communication unit 27 is controlled by the first controller 22 and serially transmits the digital signals converted by multiple sets of analog-to-digital converters 23. In this embodiment, the preset temperature threshold can be a value within the range of 36°C-45°C.

[0052] refer to Figure 3 In this embodiment, the first power module 29 is electrically connected to the second power module 31 of the electric field generator 30 and is configured to supply power to the first controller 22, multiple analog-to-digital converters 23, and the first communication unit 27 of the adapter 20. A first connector 40 is provided between each electrode piece 10 and the adapter 20, and the first connector 40 is adapted to connect the corresponding electrode piece 10 to the adapter 20. Figure 1 As shown, the first connector 40 includes a first plug 41 located at the end of the first cable 13 furthest from the electrode plate 10 and a first socket 42 located on the adapter 20. The first plug 41 and the first socket 42 are push-button spring connectors, meaning the first connector 40 connects the adapter 20 to the electrode plate 10 using a connector method. Each first cable 13 has five wires electrically connected to the corresponding bidirectional switch 26 in the corresponding set of bidirectional switch 26 and two wires electrically connected to the corresponding grounding switch 25 in the corresponding set of grounding switches 25. That is, each first connector 40 is electrically connected to the corresponding set of bidirectional switch 26 and the corresponding set of grounding switches 25 of the adapter 20 through seven wires; and is connected to the electric field generator 30 through the corresponding AC signal line 28 of the adapter 20.

[0053] A second connector 50 is provided between the adapter 20 and the electric field generator 30. The second connector 50 is adapted to connect the electric field generator 30 to the adapter 20. The adapter 20 also includes a second cable 21 connected to the second connector 50. The second connector 50 includes a second plug 51 located at the end of the second cable 21 away from the first controller 22 and a second socket 52 located on the electric field generator 30. The second plug 51 and the second socket 52 are push-button spring connectors, that is, the second connector 50 connects the adapter 20 and the electric field generator 30 by means of a connector. Each first connector 40, such as X1, Y1, X2, and Y2, is connected to the second connector 50 via a corresponding AC signal line 28. The first connectors 40, such as X1, Y1, X2, and Y2, are respectively connected to a corresponding set of grounding switches 25 and a corresponding set of analog-to-digital converters 23. Each first connector 40 is connected to the second connector 50 and the corresponding set of analog-to-digital converters 23 via a corresponding set of bidirectional switching switches 26. The second cable 21 has eight wires, including four wires 1 to 4 that are electrically connected to the corresponding AC signal lines 28 for transmitting AC signals, one wire 5 that is electrically connected to the data receiving line RX of the first communication unit 27, one wire 6 that is electrically connected to the data transmitting line TX of the first communication unit 27, one wire 7 that is electrically connected to the VCC power line of the first power module 29, and one wire 8 that is electrically connected to the GND line of the first power module 29. The second connector 50 is connected to the first communication unit 27 via the data receiving line RX and the data transmitting line TX. The VCC pin of the second connector 50 is connected to the VVC power line of the first power module 29, and the GND pin of the second connector 50 is connected to the GND line of the first power module 29 and grounded. The VCC pin of the second connector 50 is also connected to the corresponding group of voltage regulators 24 and the corresponding group of analog-to-digital converters 23 via the VCC power line of the first power module 29.

[0054] refer to Figure 4The electric field generator 30 includes a second power supply module 31, a second controller 32, an AC signal generator 34, a second communication unit 33, and a set of AC signal switches 35. The VCC pin of the second connector 50 is also electrically connected to the VCC power line of the second power supply module 31, and the GND pin of the second connector 50 is grounded through the GND line of the second power supply module 31. The second power supply module 31 is also connected to and supplies power to the second controller 32 and the AC signal generator 34, respectively. The second communication unit 33 is electrically connected to the wire 5 of the second connector 50 through its data receiving line RX and to the wire 6 of the second connector 50 through its data transmitting line TX, thereby enabling information exchange between the electric field generator 30 and the adapter 20. The second controller 32 is also electrically connected to the second communication unit 33, the AC signal generator 34, and a set of AC signal switches 35. The second controller 32 is configured to control the opening and closing of each AC signal switch 35 in the set of AC signal switches 35 and adjust the relevant parameters of the AC signal applied by the AC signal generator 34 according to the relevant digital signals received from the adapter 20 by the second communication unit 33. The AC signal generator 34 is electrically connected to the wires 1 to 4 of the second connector 50 for transmitting AC signals through the set of AC signal switches 35. The set of AC signal switches 35 includes multiple AC signal switches 35, and the multiple AC signal switches 35 are arranged one-to-one with multiple electrode plates 10. Each AC signal switch 35 is electrically connected to the corresponding wire 1, 2, 3, 4 of the second connector 50 through an AC signal wiring 36-1, 36-2, 36-3, 36-4, and is also electrically connected to the corresponding electrode plate 10 through the corresponding wires 1, 2, 3, 4 of the second connector 50 to transmit AC signals to each electrode plate 10. The AC signal generator 34 is electrically connected to the group of AC signal switches 35 via an AC signal connector 36. Specifically, the number of AC signal switches 35 in the electric field generator 30 is related to the number of electrode plates 10. In this embodiment, the number of AC signal switches 35 is equal to the number of electrode plates 10, and both are four. The AC signal switches 35 include a first AC signal switch 35-1, a second AC signal switch 35-2, a third AC signal switch 35-3, and a fourth AC signal switch 35-4, which are electrically connected to wires 1 to 4 of the second connector 50 respectively.One end of the first AC signal switch 35-1 is electrically connected to the AC signal generator 34 via the AC signal wiring 36 of the electric field generator 30, and the other end is electrically connected to the corresponding wire 1 for transmitting AC signals in the second connector 50 via an AC signal wiring 36-1. It is also electrically connected to the AC signal line 28 located at port X1 of the adapter 20 via the wire 1 of the second connector 50. The AC signal line 28 located at port X1 of the adapter 20 is electrically connected to the first connector 40. The first connector 40 located at port X1 of the adapter 20 is electrically connected to the corresponding electrode plate 10, so as to control whether the AC signal generator 34 transmits AC signals to the electrode plate 10 electrically connected to port X1 of the adapter 20. One end of the second AC signal switch 35-2 is electrically connected to the AC signal generator 34 via the AC signal wiring 36 of the electric field generator 30, and the other end is electrically connected to the corresponding wire 2 for transmitting AC signals in the second connector 50 via an AC signal wiring 36-2. It is also electrically connected to the AC signal line 28 at port Y1 of the adapter 20 via the wire 2 of the second connector 50. The AC signal line 28 at port Y1 of the adapter 20 is electrically connected to the first connector 40. The first connector 40 at port Y1 of the adapter 20 is electrically connected to the corresponding electrode 10, so as to control whether the AC signal generator 34 transmits AC signals to the electrode 10 electrically connected to port Y1 of the adapter 20. One end of the third AC signal switch 35-3 is electrically connected to the AC signal generator 34 via the AC signal wiring 36 of the electric field generator 30, and the other end is electrically connected to the corresponding wire 3 for transmitting AC signals in the second connector 50 via an AC signal wiring 36-3. It is also electrically connected to the AC signal line 28 at port X2 of the adapter 20 via the wire 3 of the second connector 50. The AC signal line 28 at port X2 of the adapter 20 is electrically connected to the first connector 40. The first connector 40 at port X2 of the adapter 20 is electrically connected to the corresponding electrode plate 10, so as to control whether the AC signal generator 34 transmits AC signals to the electrode plate 10 electrically connected to port X2 of the adapter 20. One end of the fourth AC signal switch 35-4 is electrically connected to the AC signal generator 34 via the AC signal wiring 36 of the electric field generator 30, and the other end is electrically connected to the corresponding wire 4 for transmitting AC signals in the second connector 50 via an AC signal wiring 36-4. It is also electrically connected to the AC signal line 28 at port Y2 of the adapter 20 via the wire 4 of the second connector 50. The AC signal line 28 at port Y2 of the adapter 20 is electrically connected to the first connector 40. The first connector 40 at port Y2 of the adapter 20 is electrically connected to the corresponding electrode plate 10, so as to control whether the AC signal generator 34 transmits AC signals to the electrode plate 10 electrically connected to port Y1 of the adapter 20.

[0055] The following will refer to Figures 2 to 4The working principle of the tumor electric field therapy device 100 in this embodiment is described in detail.

[0056] Specifically, when it is necessary to detect the temperature of each electrode unit 12 of a certain electrode plate 10, the first controller 22 of the adapter 20 or the second controller 32 of the electric field generator 30 controls each of the multiple bidirectional switching switches 26 of a set of bidirectional switching switches 26 electrically connected to the electrode plate 10 to turn on one end and turn off the other end, so as to disconnect the AC signal applied to the electrode plate 10; at the same time, the first controller 22 of the adapter 20 or the second controller 32 of the electric field generator 30 controls each of the grounding switches 25 of a set of grounding switches 25 electrically connected to the electrode plate 10 to turn on in sequence. At this time, the temperature detection signals collected by each temperature sensor 14 of each electrode unit 12 in each row of the electrode plate 10 can be collected in sequence in time through the multiple detection channels A, B, C, D, E of a set of analog-to-digital converters 23 corresponding to the electrode plate 10. Each detection channel A, B, C, D, and E of each group of analog-to-digital converters 23 simultaneously acquires only the temperature detection signal of the temperature sensor 14 of the corresponding electrode unit 12 in the same row of electrode plates 10. This temperature detection signal can be characterized by a voltage value. Of the four grounding switches 25 corresponding to the electrode plate 10, only one can be on at any given time, while the other three are off. All five bidirectional switching switches 26 of the group of analog-to-digital converters 23 are switched to their respective terminals 1, so that each dual-purpose signal line 19 of the electrode plate 10 is electrically connected to the corresponding detection channels A, B, C, D, and E of the corresponding analog-to-digital converter 23. With this configuration, the group of analog-to-digital converters 23 can acquire the voltage values ​​of all temperature sensors 14 of each electrode unit 12 in the same row of electrode plates 12 that are short-circuited to one grounding line 18 corresponding to the on-circuit grounding switch 25.

[0057] Specifically, when the first grounding switch 25-1 is closed, the second grounding switch 25-2 is open, and the first bidirectional switching switch 26-1, the second bidirectional switching switch 26-2, the third bidirectional switching switch 26-3, the fourth bidirectional switching switch 26-4, and the fifth bidirectional switching switch 26-5 are all switched to their respective terminals 1, the temperature sensors 14 of the electrode units 12-1 to 12-5 in the first row group are energized, while the temperature sensors 14 of the electrode units 12-6 to 12-9 in the other rows are de-energized. The signal terminals 14-2 of the temperature sensors 14 of the electrode units 12-1 and 12-6 in the first detection channel A of the analog-to-digital converter 23 are short-circuited. Since only the grounding terminal 14-1 of the temperature sensor 14 in electrode unit 12-1 is connected to ground, while the grounding terminal 14-1 of the temperature sensor 14 in each of electrode units 12-6 is disconnected, and each electrode unit 12 has a diode 16 connected in series with the temperature sensor 14, the temperature sensors 14 of the other electrode units 12 in the same row will not affect the resistance value of the temperature sensor 14 in electrode unit 12-1. Therefore, only the temperature sensor 14 of electrode unit 12-1 is effectively operating on the first detection channel A of this group of analog-to-digital converters 23, and the temperature detection signal (voltage value) collected by the first detection channel A is the voltage value of the temperature sensor 14 in electrode unit 12-1. Similarly, the voltage value collected on the second detection channel B of this group of analog-to-digital converters 23 is the voltage value of the temperature sensor 14 in electrode unit 12-2. The voltage value collected on the third detection channel C of this group of analog-to-digital converters 23 is the voltage value of the temperature sensor 14 in electrode unit 12-3. The voltage value collected on the fourth detection channel D of the analog-to-digital converter 23 is the voltage value of the temperature sensor 14 of the electrode unit 12-4. The voltage value collected on the fifth detection channel E of the analog-to-digital converter 23 is the voltage value of the temperature sensor 14 of the electrode unit 12-5.

[0058] When the second grounding switch 25-2 is closed, the first grounding switch 25-1 is open, and all four bidirectional switches 26-1, 26-2, 26-3, 26-4, and 26-5 are switched to their respective terminals 1, the temperature sensors 14 of electrode units 12-6 to 12-9 in the second row are energized, while the temperature sensors 14 of electrode units 12-1 to 12-5 in the other rows are de-energized. The signal terminals 14-2 of the temperature sensors 14 of electrode units 12-1 and 12-6 in the first detection channel A of the analog-to-digital converter 23 are short-circuited. Only the grounding terminal 14-1 of the temperature sensor 14 in electrode unit 12-6 is connected to ground, while the grounding terminal 14-1 of the temperature sensor 14 in electrode unit 12-1 is disconnected. Each electrode unit 12 has a diode 16 connected in series with the temperature sensor 14. The temperature sensors 14 of the other electrode units 12 in the same row do not affect the resistance value of the temperature sensor 14 in electrode unit 12-6. Therefore, only the temperature sensor 14 of electrode unit 12-6 is effectively operating on the first detection channel A of this group of analog-to-digital converters 23. At this time, the temperature detection signal (voltage value) collected by the first detection channel A is the voltage value of the temperature sensor 14 in electrode unit 12-6. Similarly, the voltage value collected on the second detection channel B of this group of analog-to-digital converters 23 is the voltage value of the temperature sensor 14 in electrode unit 12-7. The voltage value collected on the third detection channel C of this group of analog-to-digital converters 23 is the voltage value of the temperature sensor 14 in electrode unit 12-8. The voltage value collected on the fourth detection channel D of the analog-to-digital converter 23 is the voltage value of the temperature sensor 14 of the electrode unit 12-9. The fifth detection channel E of the analog-to-digital converter 23 does not collect the voltage value of the temperature sensor 14.

[0059] In this embodiment, the third grounding switch 25-3 and the fourth grounding switch 25-4 are in an idle and open state and do not require operation. In other embodiments of electrode plates, the electrode plates may have more rows and more grounding wires 18 connected accordingly. When the third grounding switch 25-3 and the fourth grounding switch 25-4 are both connected to the corresponding grounding wires 18, the third grounding switch 25-3 and the fourth grounding switch 25-4 can be turned on in sequence and all bidirectional switching switches 26 can be switched to their respective terminals 1. Then, the voltage values ​​of the temperature sensors 14 on each electrode unit 12 of other rows can be further detected.

[0060] The first controller 22, multiple sets of analog-to-digital converters 23, and multiple sets of bidirectional switching switches 26 can automatically perform operations through pre-programmed program code. For example, the first controller 22 first controls all bidirectional switching switches 26 in the corresponding set to switch to end 1, so that all ends 1 of these bidirectional switching switches 26 are turned on and all ends 2 are turned off, so that each dual-purpose signal line 19 of the corresponding electrode plate 10 is electrically connected to the corresponding set of analog-to-digital converters 23. Then, it closes the first grounding switch 25-1 in the corresponding set of grounding switches 25 and opens the second grounding switch 25-2 in the same set of grounding switches 25. During this period, the set of analog-to-digital converters... Each detection channel A, B, C, D, and E of the converter 23 acquires the temperature detection signals of each temperature sensor 14 of each electrode unit 12 located in the first row of the corresponding electrode sheet 10, converts them into digital signals, and stores them in a separately provided memory. Then, after a preset interval, the first controller 22 closes the second grounding switch 25-2 in the group of grounding switches 25 and opens the first grounding switch 25-1 in the group of grounding switches 25. During this period, each detection channel A, B, C, and D of the group of analog-to-digital converters 23 acquires the temperature detection signals of each temperature sensor 14 of each electrode unit 12 located in the second row of the group. By sequentially and individually turning on each grounding switch 25 in the group of grounding switches 25, the temperature detection signals of all temperature sensors 14 on the electrode sheet 10 can be obtained. Similarly, through this operation, the temperature detection signals of all temperature sensors 14 on at least one pair of electrode sheets 10 can be obtained. In this embodiment, the third grounding switch 25-3 to the fourth grounding switch 25-4 are in an idle and open state and do not require any operation.

[0061] The tumor electric field therapy device 100 of this application can achieve real-time and comprehensive monitoring of the temperature of all electrode units 12 on the electrode sheet 10 without increasing the weight of the electrode sheet 10 or the number of wires in the first cable 13 electrically connected to the electrode sheet 10. In this way, the alternating electrical signal applied to the electrode sheet 10 or the corresponding column of electrode units 12 on the electrode sheet 10 can be controlled according to the obtained temperature detection signal, so as to avoid low-temperature burns to the patient's body surface during tumor treatment through the electrode sheet 10. Furthermore, the flexible circuit board 11 of the electrode sheet 10 of this application is electrically connected to the dielectric element 15 of the same electrode unit 12 and the signal terminal 14-2 of the temperature sensor 14 through the same dual-purpose signal line 19. This allows for the transmission of both AC signals and DC signals for temperature signal acquisition, as well as the acquired temperature detection signal, via the dual-purpose signal line 19. Simultaneously, it significantly reduces the number of conductive traces (grounding line 18, dual-purpose signal line 19) laid on it, reducing the wiring difficulty of the flexible circuit board 11, simplifying the manufacturing process, reducing the weight of the flexible circuit board 11, and lowering manufacturing costs. The electrode sheet 10 of this application can also switch between applying AC signals for tumor treatment and transmitting DC signals for temperature acquisition and transmitting the acquired temperature detection signal through a combination of a grounding switch 25 electrically connected to the grounding line 18 and a bidirectional switching switch 26 electrically connected to the dual-purpose signal line 19.

[0062] When it is necessary to apply an AC signal to the patient through each electrode unit 12 of an electrode pad 10, the first controller 22 of the adapter 20 or the second controller 32 of the electric field generator 30 controls all the grounding switches 25 in a set of grounding switches 25 corresponding to the electrode pad 10 to be disconnected, and at the same time controls all the bidirectional switching switches 26 in a set of bidirectional switching switches 26 corresponding to the electrode pad 10 to be switched to their respective 2 ends, so that all 1 ends of these bidirectional switching switches 26 are disconnected and all 2 ends are connected, so that each dual-purpose signal line 19 of the electrode pad 10 is electrically connected to an AC signal line 28 corresponding to the electrode pad 10 of the adapter 20, thereby transmitting the AC signal to each electrode unit 12 of the electrode pad 10.When the temperature detection signals of the temperature sensors 14 of all electrode units 12 of the detected electrode plate 10 are much lower than the preset temperature threshold stored in the electric field generator 30 or the adapter 20, the electric field generator 30 controls the AC signal generator 34 through its second controller 32 to continue generating AC signals with increased or unchanged voltage or current amplitudes, which are then transmitted to the corresponding counter electrode plate 10 through a corresponding AC signal line 28 of the adapter 20, so that the counter electrode plate 10 continues to apply AC signals; when the temperature detection signals of the temperature sensors 14 of all electrode units 12 of the detected electrode plate 10 are lower than but close to the preset temperature stored in the electric field generator 30 or the adapter 20... When the threshold is reached, the electric field generator 30 can reduce the voltage or current of the AC signal generated by the AC signal generator 34 through the second controller 32, thereby reducing the voltage or current of the AC signal applied to the electrode plate 10; when the temperature detection signal of the temperature sensor 14 of the electrode unit 12 of a certain electrode plate 10 is detected to be greater than the preset temperature threshold, the electric field generator 30 controls the AC signal switch 35 electrically connected to the electrode plate 10 to disconnect through the second controller 32, so as to stop applying the AC signal to the electrode plate 10; or the second controller 32 of the electric field generator 30 or the first controller 22 of the adapter 20 controls a set of bidirectional switching switches 26 electrically connected to the electrode plate 10 to disconnect. All bidirectional switching switches 26 are switched from their 2nd end to their 1st end, that is, all the 1st ends of all bidirectional switching switches 26 controlled by the electrode plate 10 are turned on and all the 2nd ends are turned off, thereby stopping the application of alternating electrical signals to the electrode plate 10; or, when the temperature detection signal of the temperature sensor 14 of an electrode unit 12 of a certain electrode plate 10 is detected to be greater than a preset temperature threshold, the second controller 32 of the electric field generator 30 controls the AC signal switch electrically connected to the electrode plate 10 to continue to be turned on, and the second controller 32 of the electric field generator 30 or the first controller 22 of the adapter 20 controls a bidirectional switch electrically connected to the electrode unit 12 of the electrode plate 10. Switch 26 switches from its two ends to its one end, and the second controller 32 of the electric field generator 30 or the first controller 22 of the adapter 20 simultaneously controls the remaining bidirectional switches 26 that are electrically connected to the electrode units 12 in different columns from the electrode units 12 whose temperature detection signals do not exceed the preset temperature threshold. This stops applying AC signals to all electrode units 12 in the column where the temperature detection signals of the electrode 10 exceed the preset temperature threshold, and continues to apply AC signals to the remaining column electrode units 12 whose temperature detection signals do not exceed the preset temperature threshold. This realizes the AC signal application control method of the tumor electric field therapy device 100 based on temperature detection signals.

[0063] In this embodiment, the grounding switch 25, which is electrically connected to the multiple grounding lines 18 of the electrode plate 10, and the bidirectional switching switch 26, which is electrically connected to the multiple dual-purpose signal lines 19 of the electrode plate 10, are both located in the adapter 20. However, in other embodiments, the grounding switch 25, which is electrically connected to the grounding lines 18, and the bidirectional switching switch 26, which is electrically connected to the dual-purpose signal lines 19, may also be located on the electrode plate 10 or in the electric field generator 30, which will not be elaborated here. In addition, the analog-to-digital converter 23 located in the adapter 20 may also be located in the electric field generator 30 and directly controlled by the second controller 32.

[0064] This application also provides other embodiments of the electrode sheet 10 and the adapter 20, which are described below in conjunction with... Figures 5 to 9 Explain each separately.

[0065] The foregoing description pertains to the tumor electric field therapy device of this application, which uses the electrode sheet 10 in the first embodiment, and the circuit arrangement of the electrode unit 12 of the electrode sheet 10 is two rows and five columns. This application also provides other circuit arrangements; please refer to [reference needed]. Figure 5As shown, in the second embodiment of the tumor electric field therapy device of this application, the electrode sheet 10A has its nine electrode units of flexible circuit board 11A arranged in three rows and three columns. The electrode sheet 10 includes three grounding wires 18 and three dual-purpose signal lines 19. Each grounding wire 18 is used to ground the grounding terminal 14-1 of the temperature sensor 14 of each electrode unit 12 in the same row group. Each dual-purpose signal line 19 is connected to each electrode unit 12 in each column group to receive temperature detection signals or transmit AC signals. The three grounding wires 18 of the electrode sheet 10A include a first grounding wire 18-1, a second grounding wire 18-2, and a third grounding wire 18-3. The first row group includes electrode units 12-1 to 12-3, the second row group includes electrode units 12-4 to 12-6, and the third row group includes electrode units 12-7 to 12-9. Specifically, the first grounding wire 18-1 is used to ground the grounding terminal 14-1 of each temperature sensor 14 of the three electrode units 12 (12-1 to 12-3) in the first row group; the second grounding wire 18-2 is used to ground the grounding terminal 14-1 of each temperature sensor 14 of the three electrode units 12 (12-4 to 12-6) in the second row group; and the second grounding wire 18-3 is used to ground the grounding terminal 14-1 of each temperature sensor 14 of the three electrode units 12 (12-7 to 12-9) in the third row group. The three dual-purpose signal lines 19 of the electrode sheet 10A include the first dual-purpose signal line 19-1, the second dual-purpose signal line 19-2, and the third dual-purpose signal line 19-3. One end of the first dual-purpose signal line 19-1 is simultaneously connected to the dielectric element 15 of each of the three electrode units 12 (electrode unit 12-1, electrode unit 12-4, and electrode unit 12-7) and the signal terminal 14-2 of each of their respective temperature sensors 14; one end of the second dual-purpose signal line 19-2 is simultaneously connected to the dielectric element 15 of each of the three electrode units 12 (electrode unit 12-2, electrode unit 12-5, and electrode unit 12-8) and the signal terminal 14-2 of each of their respective temperature sensors 14; one end of the third dual-purpose signal line 19-3 is simultaneously connected to the dielectric element 15 of each of the three electrode units 12 (electrode unit 12-3, electrode unit 12-6, and electrode unit 12-9) and the signal terminal 14-2 of each of their respective temperature sensors 14.

[0066] Correspondingly, the first grounding switch 25-1, the second grounding switch 25-2, and the third grounding switch 25-3 on the adapter 20 are electrically connected to one of the corresponding grounding wires 18 of the first grounding wire 18-1, the second grounding wire 18-2, and the third grounding wire 18-3, respectively, while the fourth grounding switch 25-4 is in an idle and disconnected state. The first bidirectional switching switch 26-1, the second bidirectional switching switch 26-2, and the third bidirectional switching switch 26-3 on the adapter 20 are electrically connected to one of the corresponding dual-purpose signal lines 19 of the first dual-purpose signal line 19-1, the second dual-purpose signal line 19-2, and the third dual-purpose signal line 19-3, respectively, while the fourth bidirectional switching switch 26-4 and the fifth bidirectional switching switch 26-5 are in an idle and disconnected state.

[0067] The tumor electric field therapy device formed by electrode 10A, adapter 20, and electric field generator 30 operates in the same manner as the tumor electric field therapy device 100 described above. When both ends of all bidirectional switching switches 26 are turned on, all dual-purpose signal lines 19 and AC signal lines 28 are connected, and all electrode units 12 are connected to AC signals. When one end of all bidirectional switching switches 26 is turned on, the temperature detection signals of the temperature sensors 14 of each electrode unit 12 in each row can be obtained sequentially by turning on each grounding switch 25 in sequence. No operation is required for the grounding switches 25 and bidirectional switching switches 26 when they are in an idle, off state.

[0068] The adapter 20 of the tumor electric field therapy device described above is equipped with four grounding switches 25 and five bidirectional switching switches 26. When electrically connected to the electrode plates 10 and 10A, some of the grounding switches 25 and / or some of the bidirectional switching switches 26 are in an idle and open state. It is understood that the number of grounding switches 25 of the adapter 20 can be set according to the number of grounding wires 18 of the corresponding electrode plates 10 and 10A, and the number of bidirectional switching switches 26 can be set according to the number of dual-purpose signal lines 19 of the corresponding electrode plates 10 and 10A, so as to avoid the occurrence of grounding switches 25 and bidirectional switching switches 26 in an idle and open state.

[0069] refer to Figures 6 to 7As shown, the electrode plate 10 is provided with two grounding wires 18 (first grounding wire 18-1, second grounding wire 18-2) and five dual-purpose signal wires (first dual-purpose signal wire 19-1, second dual-purpose signal wire 19-2, third dual-purpose signal wire 19-3, fourth dual-purpose signal wire 19-4, fifth dual-purpose signal wire 19-5). The adapter 20A in this embodiment is a modified embodiment of the adapter 20 in the aforementioned embodiment, which is provided with two grounding switches 25 (first grounding switch 25-1, second grounding switch 25-2) and five bidirectional switching switches 26 (first bidirectional switching switch 26-1, second bidirectional switching switch 26-2, third bidirectional switching switch 26-3, fourth bidirectional switching switch 26-4, fifth bidirectional switching switch 26-5). In this embodiment, the first connector 40A electrically connects the two grounding switches 25 to the two grounding wires 18 of the electrode plate 10 one-to-one, and electrically connects the five bidirectional switching switches 26 to the five dual-purpose signal lines 19 of the electrode plate 10 one-to-one. The operation mode of the tumor electric field therapy device formed by the electrode plate 10, the adapter 20A, and the electric field generator 30 is the same as that of the tumor electric field therapy device 100 described above, and will not be repeated here.

[0070] refer to Figures 8 to 9 As shown, electrode plate 10A is provided with 3 grounding wires 18 (first grounding wire 18-1, second grounding wire 18-2, second grounding wire 18-3) and 3 dual-purpose signal wires (first dual-purpose signal wire 19-1, second dual-purpose signal wire 19-2, third dual-purpose signal wire 19-3). The adapter 20B in this embodiment is another modified embodiment of the adapter 20 in the previous embodiment. It is provided with 3 grounding switches 25 (first grounding switch 25-1, second grounding switch 25-2, third grounding switch 25-3) and 3 bidirectional switching switches 26 (first bidirectional switching switch 26-1, second bidirectional switching switch 26-2, third bidirectional switching switch 26-3). Each group of analog-to-digital converters 23 includes three detection channels A, B, and C. In this embodiment, connector 40B electrically connects the three grounding switches 25 to the three grounding wires 18 of electrode 10A, and electrically connects the three bidirectional switching switches 26 to the three dual-purpose signal lines 19 of electrode 10A, respectively. The tumor electric field therapy device formed by electrode 10A, adapter 20B, and electric field generator 30 operates in the same way as the tumor electric field therapy device 100 described above, and will not be repeated here.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electrode pad for use in tumor electric field therapy, characterized in that, include: Multiple electrode units are divided into multiple row groups and multiple column groups, wherein the number of row groups is 2 and the number of column groups is 5, or the number of row groups and the number of column groups are both 3. as well as A flexible circuit board is configured to have multiple electrode units spaced apart thereon, and multiple conductive traces are embedded inside it. These multiple conductive traces include: Multiple grounding wires are provided, each grounding wire being electrically connected to a row group of the plurality of electrode units in a one-to-one correspondence. Each grounding wire is configured to short-circuit and ground a corresponding portion of each electrode unit in the corresponding row group. A multi-channel dual-purpose signal line is electrically connected to each column of the plurality of electrode units in a one-to-one correspondence. Each of the dual-purpose signal lines is configured to transmit both AC signals and DC signals to each of the electrode units in the corresponding column, or to transmit temperature detection signals detected by each of the electrode units in the corresponding column.

2. The electrode sheet according to claim 1, characterized in that, The number of dual-purpose signal lines is equal to the number of column groups into which the electrode unit is divided, and / or the number of ground lines is equal to the number of row groups into which the electrode unit is divided.

3. The electrode sheet according to any one of claims 1 to 2, characterized in that, Each of the electrode units includes a dielectric element for transmitting AC signals and a temperature sensor for detecting the temperature of the corresponding electrode unit, having a signal terminal and a ground terminal. The dielectric element of each electrode unit is short-circuited to the signal terminal of the temperature sensor.

4. The electrode sheet according to claim 1, characterized in that, When the electrode unit is performing temperature detection, only one of the multiple grounding wires is conducting at any given time, while the other multiple grounding wires are disconnected. All of the multiple dual-purpose signal lines are conducting when the electrode unit is performing temperature detection.

5. The electrode sheet according to claim 1, characterized in that, All or partially conduction of the multiple dual-purpose signal lines when an AC signal is applied to the electrode unit, and all of the multiple grounding lines are disconnected when an AC signal is applied to the electrode unit.

6. A tumor electric field therapy device, characterized in that, It includes at least one pair of electrode sheets as described in any one of claims 1-5.

7. The tumor electric field therapy device according to claim 6, characterized in that, Also includes: An electric field generator is configured to provide alternating current signals to a plurality of electrode units of the electrode sheet via a dual-purpose signal line of the electrode sheet; and An adapter, connected between the electrode plate and the electric field generator, is configured to transmit the AC signal generated by the electric field generator to the multi-purpose signal line of the electrode plate, and is also configured to receive the temperature detection signal output by the multi-purpose signal line of the electrode plate. The adapter includes: one AC signal line, configured to provide AC signals to each of the electrode units in the corresponding column group through the multiple multi-purpose signal lines.

8. The tumor electric field therapy device according to claim 7, characterized in that, The adapter also includes multiple sets of grounding switches. Each set of grounding switches is electrically connected to a corresponding electrode piece and includes multiple grounding switches. Each of the multiple grounding switches is electrically connected to one of the multiple grounding wires of the corresponding electrode piece and is configured to control the conduction or disconnection of the multiple grounding wires.

9. The tumor electric field therapy device according to claim 8, characterized in that, The adapter also includes: Multiple sets of analog-to-digital converters are electrically connected to the multiplexed signal lines of the corresponding electrode plates, and are configured to receive the temperature detection signals transmitted by the multiplexed signal lines of the corresponding electrode plates and convert the temperature detection signals from analog signals to digital signals. Each set of analog-to-digital converters includes multiple detection channels, each detection channel being used to connect to a corresponding multiplexed signal line among the multiplexed signal lines. Multiple sets of bidirectional switching switches are provided, each corresponding to one of the electrode plates. Each set of bidirectional switching switches includes multiple bidirectional switching switches, and each of the multiple bidirectional switching switches is electrically connected to the multi-channel dual-purpose signal line of the corresponding electrode plate. Each bidirectional switching switch also has a terminal 1 electrically connected to a corresponding detection channel in the corresponding analog-to-digital converter and a terminal 2 electrically connected to the AC signal line.

10. The tumor electric field therapy device according to claim 9, characterized in that, The adapter also includes: The first controller is connected to the multiple sets of grounding switches and the multiple sets of bidirectional switching switches respectively, and is configured to: control the opening and closing states of the multiple grounding switches in a sequential and cyclic manner, thereby sequentially and individually turning on each of the multiple grounding wires of the corresponding electrode sheet; and control the switching state of the multiple bidirectional switching switches, so that the bidirectional switching switches are set to end 1 to output a temperature detection signal, or set to end 2 to transmit an AC signal.

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