Tumor electric field treatment device and electrode patch thereof

Abstract

The invention provides a tumor electric field treatment device and an electrode patch thereof, and the electrode patch comprises an electrode array which comprises twenty electrode units and sixteen temperature sensors. The sixteen temperature sensors are located on the edge and the center of the electrode array and corresponding electrode units located in the middle of the edge and the center respectively in the space structure. The sixteen temperature sensors are arranged on a circuit in four rows and four columns, a flexible circuit board of the electrode array is provided with four grounding traces and four signal traces, and the grounding traces are arranged on the back face of the flexible circuit board and electrically connected with the grounding ends of the temperature sensors in the corresponding row respectively. And the four paths of signal traces are also arranged on the back surface of the flexible circuit board and are electrically connected with the signal ends of the corresponding columns of temperature sensors respectively. According to the tumor electric field treatment device and the electrode patch thereof, the temperature sensors are arranged on part of the electrode units at different positions of the electrode array, so that comprehensive temperature measurement can be realized, and wiring of conductive traces on the flexible circuit board can be simplified.

Description

Technical Field

[0001] The present invention relates to a tumor electric field treatment device and an electrode patch thereof, belonging to the technical field of medical equipment. Background Art

[0002] Currently, the main treatments for tumors include surgery, radiotherapy, and chemotherapy, but all have corresponding disadvantages. For example, radiotherapy and chemotherapy can produce side effects and kill normal cells. Using electric fields to treat tumors is also one of the current research and development frontiers. Tumor electric field therapy is a tumor treatment method that uses a special electric field generator to generate low-intensity, medium- and high-frequency alternating electric fields to interfere with the mitotic process of tumor cells. Studies have shown that tumor electric field therapy is effective in treating diseases such as glioblastoma, non-small cell lung cancer, and malignant pleural mesothelioma. The alternating electric field applied by this treatment method can affect the aggregation of microtubules, prevent spindle formation, inhibit the mitotic process, and induce apoptosis of cancer cells.

[0003] A tumor electric field therapy device used for tumor electric field therapy primarily comprises an electric field generator and an electrode patch electrically connected to the electric field generator. The electrode patch includes an electrode array that transmits an alternating electric field. The electrode array comprises a flexible circuit board (FPCB), multiple dielectric elements disposed on the skin-facing side of the FPCB, and multiple temperature sensors that monitor the temperature of each dielectric element. The FPCB is equipped with several conductive traces to transmit alternating current (AC) signals to each dielectric element and direct current (DC) signals to each temperature sensor. The large number of temperature sensors complicates existing FPCB wiring schemes, significantly impacting their manufacture.

[0004] Therefore, it is indeed necessary to provide an improved electrode patch and tumor electric field treatment device to overcome the problems existing in the above-mentioned electrode patch and tumor electric field treatment device. Summary of the Invention

[0005] The present invention provides a tumor electric field treatment device and an electrode patch thereof, wherein the flexible circuit board has a simple wiring scheme.

[0006] The electrode patch of the present invention is realized through the following technical solution: an electrode patch for tumor electric field therapy, which includes an electrode array, the electrode array includes twenty electrode units arranged in four rows and six columns in a spatial structure, wherein the first row and the last row are each provided with four electrode units and are respectively located on the second to fifth columns, the middle two rows are each provided with six electrode units and are respectively located on the first to sixth columns, and the twelve electrode units located at the edge of the electrode array are defined as edge electrode units, the four electrode units located in the central area of ​​the electrode array are all central electrode units, and the remaining four electrode units between the edge and the central area of ​​the electrode array are all intermediate electrode units; the electrode array also includes sixteen temperature sensors, which are respectively arranged on the twelve edge electrode units, the two diagonally arranged central electrode units, and the two diagonally arranged central electrode units. The electrode array comprises a flexible circuit board, an AC trace on the flexible circuit board, and a dielectric element on the electrode unit. The AC trace is arranged on the front of the flexible circuit board and is electrically connected to each of the dielectric elements. The flexible circuit board is also provided with four ground traces and four signal traces. The sixteen temperature sensors are arranged in four rows and four columns on the circuit. The ground trace is arranged on the back of the flexible circuit board and is electrically connected to the ground terminals of each temperature sensor in a corresponding row on the circuit. The four signal traces are also arranged on the back of the flexible circuit board and are electrically connected to the signal terminals of each temperature sensor in a corresponding column on the circuit. During temperature detection, the four signal traces remain conductive, and the four ground traces are turned on in turn to obtain temperature detection signals from each temperature sensor row by row.

[0007] Furthermore, the sixteen temperature sensors are arranged in a centrally symmetrical manner relative to the center of the matrix formed by the twenty electrode units in terms of spatial structure.

[0008] Furthermore, in terms of spatial structure, another central electrode unit without the temperature sensor is spaced between the central electrode unit with the temperature sensor and the intermediate electrode unit with the temperature sensor in each of the second and third rows.

[0009] Furthermore, in terms of spatial structure, the twenty electrode units are numbered M1 to M20 from top to bottom and from left to right, wherein the electrode units in the first row include electrode unit M1 to electrode unit M4, the electrode units in the second row include electrode unit M5 to electrode unit M10, the electrode units in the third row include electrode unit M11 to electrode unit M16, and the electrode units in the fourth row include electrode unit M17 to electrode unit M20; in terms of circuit connection, one ground trace short-circuit and ground the ground ends of the temperature sensors of the electrode units M20, M19, M16, and M14, one ground trace short-circuit and ground the ground ends of the temperature sensors of the electrode units M3, M4, M9, and M10, one ground trace short-circuit and ground the ground ends of the temperature sensors of the electrode units M2, M1, M7, and M5, and one ground trace short-circuit and ground the ground ends of the temperature sensors of the electrode units M17, M18, M11, and M12.

[0010] Furthermore, in terms of circuit connection, one signal trace short-circuits all the signal ends of the temperature sensors of the electrode units M20, M3, M2, and M17, one signal trace short-circuits all the signal ends of the temperature sensors of the electrode units M19, M4, M1, and M18, one signal trace short-circuits all the signal ends of the temperature sensors of the electrode units M16, M9, M7, and M11, and one signal trace short-circuits all the signal ends of the temperature sensors of the electrode units M14, M10, M5, and M12.

[0011] Furthermore, the flexible circuit board is provided with a plurality of main body parts arranged at intervals, a plurality of connection parts connecting two adjacent main body parts and a wiring part, a conductive plate is provided on the front side of the main body part, the dielectric element is provided on the front side of the main body part and is electrically connected to the conductive plate; the temperature sensor is provided on the front side of the main body part, and a ground pad electrically connected to the ground end and a signal pad electrically connected to the signal end are provided on the front side of the main body part.

[0012] Furthermore, the electrode array is provided with a diode connected in series with the temperature sensor, and the front of part of the main body is also provided with an anode pad and a cathode pad electrically connected to the diode, the anode pad is electrically connected to the ground pad through a pad trace, and the cathode pad is electrically connected to the ground trace.

[0013] Furthermore, the wiring portion is provided with five gold fingers on the front and back sides thereof, the AC trace is led out from one of the gold fingers on the front side of the wiring portion and extends on the front side of the flexible circuit board; the four ground traces are respectively led out from the other four gold fingers on the front side of the wiring portion and pass through the wiring portion to the back side of the flexible circuit board and extend on the back side of the flexible circuit board.

[0014] Furthermore, the four signal traces are respectively led out from the four gold fingers on the back side of the wiring portion and extend on the back side of the flexible circuit board.

[0015] Furthermore, the electrode patch also includes a backing, a plurality of supporting members and a plurality of adhesive members, the electrode array is adhered to the backing, the supporting members are adhered to the backing and arranged around each of the electrode units, and the adhesive members cover each of the supporting members and each of the electrode units; the electrode array is also provided with a plurality of insulating plates fixed on the back of each of the main bodies.

[0016] The present invention is also implemented through the following technical solution: a tumor electric field treatment device, including an electric field generator and the above-mentioned electrode patch electrically connected to the electric field generator.

[0017] The tumor electric field therapy device and electrode patch of the present invention selectively provide sixteen temperature sensors on twenty electrode units. The use of shared ground and signal traces can reduce the total number of conductive traces required for the temperature sensors and simplify the wiring scheme. Furthermore, all ground and signal traces are located on the back of the flexible circuit board, which prevents signal crosstalk and improves signal transmission quality. Furthermore, the front of the flexible circuit board essentially only has AC traces, providing more wiring space for the AC traces. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional combined diagram of electrode patches in one embodiment of the tumor electric field treatment device of the present invention;

[0019] Figure 2 for Figure 1 Exploded three-dimensional diagram of the electrode patch;

[0020] Figure 3 for Figure 2 A plan view of the electrode array of the electrode patch;

[0021] Figure 4 for Figure 3 A three-dimensional exploded view of the electrode array in FIG;

[0022] Figure 5 for Figure 3 A plan view of a flexible circuit board with an electrode array;

[0023] Figure 6 for Figure 5 A local enlarged view of point A in FIG;

[0024] Figure 7 for Figure 5 The wiring diagram of the AC traces on the front side of the flexible circuit board;

[0025] Figure 8 for Figure 5 The wiring diagram of the ground trace on the back side of the flexible circuit board;

[0026] Figure 9 for Figure 5 A wiring diagram of the signal traces on the back of the flexible circuit board;

[0027] Figure 10 for Figure 1 Schematic diagram of the circuit connection between the electrode array and the adapter.

[0028] Description of reference numerals:

[0029] Electrode patch 100, electrode array 1, electrode unit 10, edge electrode unit 10A, center electrode unit 10B, middle electrode unit 10C, flexible circuit board 11, main body 111, connection part 112, connection part 113, gold finger 1131, open space 114, conductive plate 115, conductive core 1151, pad 116, ground pad 1161, signal pad 1162, anode pad 1163, cathode pad 1164, pad trace 1165, insulating plate 12, dielectric element 13, through hole 131, temperature sensor 14, ground terminal 141, signal terminal 142, diode 15, conductive trace L, AC trace L1, connection terminal Ground trace L2, first ground trace L21, second ground trace L22, third ground trace L23, fourth ground trace L24, signal trace L3, first signal trace L31, second signal trace L32, third signal trace L33, fourth signal trace L34, backing 2, support member 3, through hole 31, adhesive member 4, wire 5, heat shrink tubing 51, adapter 200, controller 201, analog-to-digital conversion module 202, communication unit 203, power module 204, ground switch 205, first ground switch 2051, second ground switch 2052, third ground switch 2053, fourth ground switch 2054, voltage divider resistor 206. DETAILED DESCRIPTION

[0030] Exemplary embodiments are described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present invention. Rather, they are merely examples of devices, systems, apparatus, and methods consistent with certain aspects of the present invention.

[0031] refer to Figure 1 and Figure 10 As shown, the tumor electric field treatment device of the present invention includes an electric field generator (not shown), multiple pairs of electrode patches 100, and an adapter 200 electrically connecting the electric field generator (not shown) and each electrode patch 100. The electric field generator (not shown) provides an alternating current signal and transmits it to each pair of electrode patches 100 through the adapter 200. After receiving the alternating current signal, each pair of electrode patches 100 forms an alternating electric field. The multiple pairs of electrode patches 100 alternately apply alternating electric fields in different directions to the patient's tumor site, which can produce a certain therapeutic effect on the patient's tumor.

[0032] refer to Figures 1 to 2 As shown, the electrode patch 100 in this embodiment is Figure 1 The electrode patch 100 is applied to the patient's torso at the location corresponding to the tumor, with the front side facing the patient. The electrode patch 100 comprises an electrode array 1, a backing 2, several supports 3, several adhesives 4, and a conductive wire 5. The electrode array 1 is adhered to the backing 2 and includes several spaced-apart electrode units 10. The supports 3 are adhered to the backing 2 and arranged around the corresponding electrode units 10 to support the adhesives 4 covering the supports 3 and the corresponding electrode units 10. The adhesives 4 directly adhere to the patient's body surface. The conductive wire 5 electrically connects an electric field generator (not shown) to the electrode array 1 to provide an alternating current signal to the electrode array 1. A biocompatible adhesive is applied to the front side of the backing 2, allowing the electrode patch 100 to be tightly adhered to the patient's body surface corresponding to the tumor location. The paired electrode patches 100 apply an alternating electric field to the patient's tumor location, disrupting or preventing mitosis in the patient's tumor cells, thereby achieving the purpose of tumor treatment.

[0033] The backing 2 is a sheet-like material made of a flexible, breathable insulating material, preferably a mesh fabric, preferably a non-woven mesh fabric. It is soft, lightweight, moisture-resistant, and breathable. The electrode array 1 is centrally adhered to the backing 2 using the aforementioned biocompatible adhesive (not shown). The support member 3 is a soft material, preferably foam, and is provided with through-holes 31 surrounding the electrode units 10. The adhesive member 4 is double-sided adhesive, preferably a conductive gel, which keeps the skin surface moist and relieves localized pressure.

[0034] Combine Figure 3As shown, in terms of spatial structure distribution, the electrode units 10 are arranged in multiple rows and columns. The electrode array 1 also includes multiple connecting portions 112 that connect two adjacent electrode units 10, and a wiring portion 113 connected to the electrode units 10 or the connecting portion 112. The wiring portion 113 is used for welding to the wire 5. The multiple adjacent electrode units 10 are spaced apart and collectively enclose a plurality of open spaces 114. This allows the skin covered by the electrode patch 100 to breathe freely after the electrode patch 100 is applied to the patient's body surface. Each electrode unit 10 is connected to multiple adjacent electrode units 10 via the connecting portion 112. At least two electrode units 10 are disconnected to allow the wiring portion 113 to pass through. The wiring portion 113 is located within one of the open spaces 114. The connection portion 113 is T-shaped and is located between the two connection portions 112 at the center of the electrode array 1. The connection portion 113 is provided with a row of gold fingers 1131 on the front and back of its end. Each gold finger 1131 is welded to the corresponding wire core (not shown) of the wire 5. The connection between the connection portion 113 and the wire 5 is covered with a heat shrink tubing 51 (see FIG. Figure 2 ) to protect the connection.

[0035] refer to Figure 4 and Figure 5 As shown, in terms of hierarchical structure, the electrode array 1 comprises a flexible circuit board 11, several insulating plates 12 disposed on the back of the flexible circuit board 11, and several dielectric elements 13 disposed on the front of the flexible circuit board 11, with the front of the flexible circuit board 11 facing the patient's body surface. The flexible circuit board 11 comprises several spaced-apart main bodies 111, several connecting portions 112 connecting adjacent main bodies 111, and the aforementioned wiring portions 113. A conductive plate 115 is disposed on the front of the main body 111, comprising four annular conductive cores 1151. The insulating plates 12 are bonded to the back of the main body 111, while the dielectric elements 13 are welded to the front of the main body 111 and electrically connected to the conductive plates 115. The main body 111, insulating plates 12, and dielectric elements 13 are all circular, with their centers aligned, forming the aforementioned electrode unit 10. The insulating plates 12 are optional for the electrode unit 10, meaning that the electrode unit 10 may not have them.

[0036] The insulating plate 12 is preferably an epoxy glass cloth laminate. Before welding the dielectric element 13 to the main body 111, it is adhered to the back of the main body 111 with glue. This reinforces the main body 111, improves the flatness of the weld surface between the main body 111 and the dielectric element 13, and enhances the weld quality between the main body 111 and the dielectric element 13. The dielectric element 13 is made of a high-dielectric-constant material, which has the conductive property of blocking direct current while allowing alternating current to pass, ensuring human safety. After welding the dielectric element 13 to the conductive plate 115, a sealant (not shown) is used to seal the periphery of the dielectric element 13. An electric field generator (not shown) transmits an alternating current signal to the dielectric element 13 via the flexible printed circuit board 11. The dielectric element 13 receives the AC signal and generates an alternating electric field between the paired electrode patches 100, which is applied to the patient. In other embodiments, the dielectric element 13 may also be in other forms, such as a polymer dielectric layer with high dielectric constant and low dielectric loss made of a thin film material with non-fixed crystal orientation, high flexibility and high toughness, which can be formed on the main body 111 by evaporation, sputtering or ion plating vapor deposition, printing, spraying or casting.

[0037] refer to Figure 3 As shown, the electrode array 1 also includes a number of temperature sensors 14 and a number of diodes 15. Figure 6 As shown, the front of the main body 111 is further provided with a plurality of pads 116 located at the center of the conductive plate 115. The plurality of pads 116 include a ground pad 1161, a signal pad 1162, an anode pad 1163 and a cathode pad 1164. The temperature sensor 14 is provided with a ground terminal 141 and a signal terminal 142 (see FIG. Figure 10 ), ground terminal 141 is soldered to the corresponding ground pad 1161, and signal terminal 142 is soldered to the corresponding signal pad 1162. The anode (unnumbered) of diode 15 is soldered to anode pad 1163, and the cathode (unnumbered) of diode 15 is soldered to cathode pad 1164. Anode pad 1163 is electrically connected to ground pad 1161 via a pad trace 1165. That is, pad trace 1165 connects diode 15 in series with ground terminal 141 of temperature sensor 14. This arrangement prevents reverse current flow, preventing current from other temperature sensors 14 from affecting this temperature sensor 14. A through-hole 131 is provided at the center of dielectric element 13 to accommodate and accommodate temperature sensor 14 and diode 15. After temperature sensor 14 and diode 15 are soldered to corresponding pads 116 and positioned at the center of the front face of main body 111, sealant is injected through through-hole 131 of dielectric element 13 to seal temperature sensor 14 and diode 15. Each main body 111 is provided with a soldering pad 116 but is not necessarily provided with a temperature sensor 14 .

[0038] The electric field generator (not shown) provides a DC signal to the temperature sensor 14 through the flexible circuit board 11 and receives a temperature signal fed back by the temperature sensor 14. The temperature sensor 14 is preferably a thermistor, which monitors the temperature of the corresponding electrode unit 10 and feeds back the temperature to the electric field generator (not shown). When the monitored temperature value exceeds the upper limit of the human body's safe temperature, the AC signal is promptly reduced or turned off to prevent the corresponding electrode unit 10 from causing low-temperature burns to the human body; when the detected temperature value is lower than a preset minimum value, the intensity of the AC signal is increased to increase the intensity of the alternating electric field and enhance the therapeutic effect.

[0039] refer to Figure 3 As shown, in this embodiment, the electrode array 1 has twenty electrode units 10, spatially distributed in an array of four rows and six columns. The first and last rows each have four electrode units 10, located in the second and fifth columns, respectively; the middle two rows each have six electrode units 10, located in the first through sixth columns, respectively. The distribution of the twenty electrode units 10 is both axially symmetrical about the rows and about the columns. Of the twenty electrode units 10, the twelve electrode units 10 located at the edges of the electrode array 1 are defined as edge electrode units 10A, the four electrode units 10 located in the center of the electrode array 1 are defined as center electrode units 10B, and the remaining four electrode units 10 between the edge and center of the electrode array 1 are defined as intermediate electrode units 10C. Due to the edge effect, when the electrode patch 100 is in use, the electrode units 10 located at the edges of the electrode array 1 experience the fastest temperature rise and the highest temperature, while the electrode units 10 located in the center of the electrode array 1 experience the slowest temperature rise and the lowest temperature. The temperature of the electrode array 1 at other locations is between the highest and lowest values.

[0040] In this embodiment, the electrode array 1 is equipped with a total of sixteen temperature sensors 14, selectively disposed on sixteen electrode units 10. These sixteen electrode units 10 include: all twelve edge electrode units 10A, two diagonally disposed center electrode units 10B, and two diagonally disposed middle electrode units 10C. The sixteen temperature sensors 14 are arranged centrosymmetrically with respect to the center of the matrix formed by the twenty electrode units 10. In each of the second and third rows, the center electrode unit 10B equipped with a temperature sensor 14 and the middle electrode unit 10C equipped with a temperature sensor 14 are separated by another center electrode unit 10B not equipped with a temperature sensor 14. In order to more clearly set the position of the electrode unit 10 of the temperature sensor 14, the twenty electrode units 10 of the electrode array 1 are numbered M1 to M20 from top to bottom and from left to right in the spatial structure. The electrode units M1, M2, M3, and M4 are located in the first row of the electrode array 1, the electrode units M5, M6, M7, M8, M9, and M10 are located in the second row of the electrode array 1, the electrode units M11, M12, M13, M14, M15, and M16 are located in the third row of the electrode array 1, and the electrode units M17, M18, M19, and M20 are located in the fourth row of the electrode array 1. Sixteen temperature sensors 14 are respectively arranged on electrode units M1, M2, M3, M4, M5, M7, M9, M10, M11, M12, M14, M16, M17, M18, M19, and M20; the electrode units without temperature sensors are M6, M8, M13, and M15.

[0041] The sixteen electrode units 10 provided with temperature sensors 14 in the electrode patch 100 of this application include all edge electrode units 10A, which detect the higher-temperature outer edge areas of the electrode patch 100 to prevent low-temperature burns on the patient's body surface. They also include two central electrode units 10B and two intermediate electrode units 10C, which detect the lower-temperature central area of ​​the electrode patch 100. This allows for comprehensive temperature measurement and more complete feedback on the temperatures of the electrode units 10 at various locations in the electrode array 1. The temperature measurement circuitry corresponding to these sixteen temperature sensors 14 will be described in detail later.

[0042] refer to Figures 7 to 9 , and combined with Figure 10As shown, the flexible printed circuit board 11 is provided with multiple conductive traces L. In this embodiment, the multiple conductive traces L include one AC trace L1, four ground traces L2, and four signal traces L3. Five gold fingers 1131 are provided on both the front and back sides of the terminal end of the connection portion 113. One gold finger 1131 on the front side is connected to the end of the AC trace L1, while the other four gold fingers 1131 on the front side are connected to the ends of the four ground traces L2 in a one-to-one correspondence. Four gold fingers 3231 on the back side are connected to the ends of the four signal traces L3 in a one-to-one correspondence. The remaining gold finger 3231 on the back side is connected to the shielding layer (not shown) of the conductor 5 and is grounded to provide electromagnetic shielding and prevent signal interference.

[0043] For the convenience of description, although Figures 7 to 9 There is no dielectric element 13, but the position of the main body 111 is the position of the electrode unit 10, so it is still marked with numbers M1 to M20. The specific arrangement of each conductive trace L is described below.

[0044] Key References Figure 7 As shown, the AC trace L1 is provided on the front surface of the flexible printed circuit board 11, extending from a gold finger 1131 on the front surface of the connection portion 113 and extending along the connection portion 113, the corresponding main body portion 111 and the corresponding connecting portion 112, and electrically connecting to each conductive plate 115, so as to transmit the AC signal to each conductive plate 115, and then to each dielectric element 13, so that each dielectric element 13 receives the AC signal to generate a therapeutic alternating electric field between the paired electrode patches 100.

[0045] The routing of AC trace L1 on the left and right sides of the flexible circuit board 11 is essentially symmetrical, so only the left side will be used as an example for description. The specific routing of AC trace L1 on the left side of the flexible circuit board 11 is as follows: AC trace L1 extends downward from the connection portion 113, through electrode unit M13, to electrode unit M18. It then turns upward from electrode unit M18, sequentially passing through electrode units M13, M7, and M2. It then extends leftward, downward, leftward, downward, rightward, and downward, sequentially passing through electrode units M1, M6, M5, M11, and M12, to electrode unit M17. It then turns upward from electrode unit M17, sequentially passing through electrode units M12, M11, M5, M6, M1, M2, and M7, returning to the connection portion 113. As AC trace L1 passes through each electrode unit 10, it electrically connects to the corresponding conductive core 1151. When passing through two adjacent electrode units 10, AC trace L1 must pass through the connecting portion 112 connecting the two adjacent electrode units 10. The routing of AC trace L1 on the right side of the flexible circuit board 11 is symmetrical with that on the left side, so it will not be described in detail here. The connecting portion 112, on which AC trace L1 is located, has two sections of AC trace L1 located on opposite sides. These two sections of AC trace L1 extend along the length of the connecting portion 112 and connect to corresponding conductive cores 1151 of the conductive plate 115. Some sections of the connecting portion 112 are not equipped with conductive traces L and serve only to connect adjacent electrode units 10.

[0046] refer to Figure 8 and Figure 9 , and combined with Figure 10 As shown, the ground terminals 141 of the temperature sensors 14 in multiple electrode units 10 are connected in parallel to the same ground trace L2. Meanwhile, the signal terminals 142 of the temperature sensors 14 in multiple electrode units 10 connected to different ground traces L2 are connected in parallel to the same signal trace L3. Each signal trace L3 remains conductive, and by alternately grounding the four ground traces L2, temperature detection signals from each temperature sensor 14 are acquired row by row. The specific temperature detection control method will be described later. Compared to providing a separate signal trace for each temperature sensor 14, this wiring method reduces the total number of conductive traces, easing the wiring complexity of the flexible printed circuit board 11 and simplifying the manufacturing process of the flexible printed circuit board 11.

[0047] The four ground traces L2 and the four signal traces L3 are generally disposed on the back side of the flexible circuit board 11. Each ground trace L2 extends from a gold finger 1131 on the front side of the connection portion 113, passes through the flexible circuit board 11, and reaches the back side of the flexible circuit board 11. The trace then extends along the connection portion 113, the corresponding main portion 111, and the corresponding connecting portion 112 to the corresponding main portion 111. The trace then passes through the corresponding main portion 111 to electrically connect to the corresponding cathode pad 1164, thereby grounding the cathode pad 1164, which is electrically connected to the diode 15. Since cathode pad 1164 is electrically connected to ground pad 1161 via diode 15, anode pad 1163, and pad trace 1165, the connection between ground trace L2 and cathode pad 1164 is equivalent to the connection between ground trace L2 and ground pad 1161, thereby grounding ground pad 1161. Later, when describing the specific routing of each ground trace L2, the connection between each ground trace L2 and each cathode pad 1164 will be directly described as the connection between ground trace L2 and each ground pad 1161, to more clearly illustrate the connection between each ground trace L2 and temperature sensor 14. Each signal trace L3 is led out from a gold finger 1131 on the back of the connection portion 113, extends along the connection portion 113, the corresponding main portion 111, and the corresponding connection portion 112, and is respectively connected to a signal pad 1162 on the corresponding main portion 111.

[0048] Key References Figure 8 , and combined with Figure 10 As shown, the four ground traces L2 are respectively a first ground trace L21 , a second ground trace L22 , a third ground trace L23 and a fourth ground trace L24 . The following describes the specific wiring method of the four ground traces L2 from the back side of the flexible circuit board 11 .

[0049] The first ground trace L21 short-circuits all the ground pads 1161 corresponding to the temperature sensors 14 of the electrode units M20, M19, M16, and M14, so as to ground the ground terminals 141 of the temperature sensors 14 of the electrode units M20, M19, M16, and M14. The specific routing of the first ground trace L21 is as follows: it is led out from the corresponding gold finger 1131 on the front of the wiring portion 113, passes through the back thereof, and then goes up to the top thereof, then extends to the left and downwards along the connecting portion 112 between the electrode unit M8 and the electrode unit M14 to the electrode unit M14 and connects to the corresponding ground pad 1161, and then continues to It extends downward through the connecting portion 112 between the electrode unit M14 and the electrode unit M19 to the electrode unit M19 and is connected to the corresponding grounding pad 1161, then extends leftward through the connecting portion 112 between the electrode unit M19 and the electrode unit M20 to the electrode unit M20 and is connected to the corresponding grounding pad 1161, and finally extends upward and then leftward in turn through the connecting portion 112 between the electrode unit M20 and the electrode unit M15, the electrode unit M15, the connecting portion 112 between the electrode unit M15 and the electrode unit M16 to the electrode unit M16 and is connected to the corresponding grounding pad 1161.

[0050] The second ground trace L22 short-circuits all the ground pads 1161 corresponding to the temperature sensors 14 of the electrode units M3, M4, M9, and M10 to ground the ground ends 141 of the temperature sensors 14 of the electrode units M3, M4, M9, and M10. The specific routing method of the second ground trace L22 is: it is led out from the corresponding gold finger 1131 on the front of the wiring part 113, passes through its back and upward to its top, and then extends to the left through the connection part 112 between the electrode unit M8 and the electrode unit M14, and then continues to extend downward through the electrode unit M14, the connection part 112 between the electrode unit M14 and the electrode unit M19, and the electrode unit M19, and then extends to the left through the connection part 112 between the electrode unit M19 and the electrode unit M20 and the electrode unit M20, and then extends upward through the connection part 112 between the electrode unit M20 and the electrode unit M20. M15 and the electrode unit M15, then extends to the left through the connection portion 112 between the electrode unit M15 and the electrode unit M16 and the electrode unit M16, then extends upward through the connection portion 112 between the electrode unit M16 and the electrode unit M10 to the electrode unit M10 and is connected to its corresponding grounding pad 1161, then continues to extend to the right through the connection portion 112 between the electrode unit M10 and the electrode unit M9 to the electrode unit M9 and is connected to its corresponding grounding pad 1161, then extends upward through the connection portion 112 between the electrode unit M9 and the electrode unit M4 to the electrode unit M4 and is connected to its corresponding grounding pad 1161, and finally extends to the right through the connection portion 112 between the electrode unit M4 and the electrode unit M3 to the electrode unit M3 and is connected to its corresponding grounding pad 1161.

[0051] The third ground trace L23 short-circuits all the ground pads 1161 corresponding to the temperature sensors 14 of the electrode units M2, M1, M7, and M5 to ground the ground ends 141 of the temperature sensors 14 of the electrode units M2, M1, M7, and M5. The specific routing method of the third ground trace L23 is as follows: it is led out from the corresponding gold finger 1131 on the front of the wiring portion 113, passes through its back and upward to its top, and then extends to the right through the connection portion 112 between the electrode unit M7 and the electrode unit M13, and then continues to extend downward through the electrode unit M13, the connection portion 112 between the electrode unit M13 and the electrode unit M18, and the electrode unit M18, and then extends to the right through the connection portion 112 between the electrode unit M18 and the electrode unit M17 and the electrode unit M17, and then extends upward through the connection portion 112 between the electrode unit M17 and the electrode unit M12 and the electrode unit M1 2, then extends to the right through the connecting portion 112 between the electrode unit M12 and the electrode unit M11 and the electrode unit M11, then extends upward through the connecting portion 112 between the electrode unit M11 and the electrode unit M5 to the electrode unit M5 and is connected to its corresponding grounding pad 1161, then continues to extend to the left through the connecting portion 112 between the electrode unit M5 and the electrode unit M6 and the electrode unit M6, then upward through the connecting portion 112 between the electrode unit M6 and the electrode unit M1 to the electrode unit M1 and is connected to its corresponding grounding pad 1161, then extends to the left through the connecting portion 112 between the electrode unit M1 and the electrode unit M2 to the electrode unit M2 and is connected to its corresponding grounding pad 1161, and finally extends downward through the connecting portion 112 between the electrode unit M2 and the electrode unit M7 to the electrode unit M7 and is connected to its corresponding grounding pad 1161.

[0052] The fourth ground trace L24 short-circuits all the ground pads 1161 corresponding to the temperature sensors 14 of the electrode units M17, M18, M11, and M12, so as to ground the ground terminals 141 of the temperature sensors 14 of the electrode units M17, M18, M11, and M12. The specific routing of the fourth ground trace L24 is as follows: it is led out from the corresponding gold finger 1131 on the front of the wiring portion 113, passes through the back thereof, and then extends upward to the top thereof, then extends to the right through the connection portion 112 between the electrode unit M7 and the electrode unit M13, and then continues to extend downward through the electrode unit M13, the connection portion between the electrode unit M13 and the electrode unit M13, and the connection portion 112 between the electrode unit M13 and the electrode unit M13. The connecting portion 112 between the electrode unit M17 and the electrode unit M18 reaches the electrode unit M18 and is connected to the corresponding grounding pad 1161, then extends to the right through the connecting portion 112 between the electrode unit M18 and the electrode unit M17 to the electrode unit M17 and is connected to the corresponding grounding pad 1161, then extends upward through the connecting portion 112 between the electrode unit M17 and the electrode unit M12 to the electrode unit M12 and is connected to the corresponding grounding pad 1161, and finally extends to the right through the connecting portion 112 between the electrode unit M12 and the electrode unit M11 to the electrode unit M11 and is connected to the corresponding grounding pad 1161.

[0053] Combine Figure 7 As shown, the ends of the four ground traces L2 on the connection portion 113 are connected one-to-one to four corresponding gold fingers 3121 located on the front of the connection portion 113. A small jumper for the first ground trace L21 and a small jumper for the third ground trace L23 are also located on the front of the connection portion 113. Note that each ground trace L2 is short-circuited to each ground pad 1161 via a diode 15, not directly. That is, a diode 15 is connected in series between each ground trace L2 and the corresponding temperature sensor 14. Note that each ground trace L2 must pass through the corresponding via (unnumbered) from the back of the corresponding main body 111 to the front of the main body 111 to connect to the corresponding ground pad 1161.

[0054] Key References Figure 9 , and combined with Figure 10 As shown, the four signal traces L3 are respectively a first signal trace L31 , a second signal trace L32 , a third signal trace L33 and a fourth signal trace L34 . The specific routing of the four signal traces L3 will be described in detail below from the back side perspective of the flexible circuit board 11 .

[0055] The first signal trace L31 short-circuits all the signal pads 1162 corresponding to the temperature sensors 14 of the electrode units M20, M3, M2, and M17, so as to connect the signal terminals 142 of the temperature sensors 14 of the electrode units M20, M3, M2, and M17 to the same detection channel (see below for details). The specific routing method of the first signal trace L31 is as follows: it is led out from the corresponding gold finger 1131 on the back of the wiring portion 113 and then divided into two branches, one of which goes up to the top of the wiring portion 113 and then extends to the left through the connection portion 112 between the electrode unit M8 and the electrode unit M14, then continues to extend downward through the electrode unit M14, the connection portion 112 between the electrode unit M14 and the electrode unit M19 to the electrode unit M19, and then extends to the left through the connection portion 112 between the electrode unit M19 and the electrode unit M20 to the electrode unit M 20 and connected to the signal pad 1162 of the electrode unit M20, then extending upward through the connection portion 112 between the electrode unit M20 and the electrode unit M15 to the electrode unit M15, then extending leftward through the connection portion 112 between the electrode unit M15 and the electrode unit M16 to the electrode unit M16, then extending upward through the connection portion 112 between the electrode unit M16 and the electrode unit M10 to the electrode unit M10, then extending rightward through the connection portion 112 between the electrode unit M10 and the electrode unit M9 to the electrode unit M9, then extending upward through the connection portion 112 between the electrode unit M9 and the electrode unit M4 to the electrode unit M4, and finally extending rightward through the connection portion 112 between the electrode unit M4 and the electrode unit M3 to the electrode unit M3 and connected to the signal pad 1162 of the electrode unit M3;The other branch extends upward to the top of the wiring portion 113 and then extends to the right through the connection portion 112 between the electrode unit M7 and the electrode unit M13, then continues to extend downward through the electrode unit M13 and the connection portion 112 between the electrode unit M13 and the electrode unit M18 to the electrode unit M18, then extends to the right through the connection portion 112 between the electrode unit M18 and the electrode unit M17 to the electrode unit M17 and is connected to the signal pad 1162 of the electrode unit M17, then extends upward through the connection portion 112 between the electrode unit M17 and the electrode unit M12 to the electrode unit M12, then extends to the right through the connection portion 112 between the electrode unit M17 and the electrode unit M12 to the electrode unit M12, and then extends to the right through the connection portion 112 between the electrode unit M17 and the electrode unit M12 to the electrode unit M12. It passes through the connection portion 112 between electrode unit M12 and electrode unit M11 to electrode unit M11, then extends upward through the connection portion 112 between electrode unit M11 and electrode unit M5 to electrode unit M5, then continues to extend leftward through the connection portion 112 between electrode unit M5 and electrode unit M6 to electrode unit M6, then upward through the connection portion 112 between electrode unit M6 and electrode unit M1 to electrode unit M1, and finally extends leftward through the connection portion 112 between electrode unit M1 and electrode unit M2 to electrode unit M2 and connects to the signal pad 1162 of electrode unit M2.

[0056] The second signal trace L32 short-circuits all the signal pads 1162 corresponding to the temperature sensors 14 of the electrode units M19, M4, M1, and M18, so as to connect the signal terminals 142 corresponding to the temperature sensors 14 of the electrode units M19, M4, M1, and M18 to the same detection channel (see below for details). The specific routing of the second signal trace L32 is as follows: it is led out from the corresponding gold finger 1131 on the back of the wiring portion 113 and then divided into two branches, one of which extends upward to the top of the wiring portion 113 and then extends to the left through the connection portion 112 between the electrode unit M8 and the electrode unit M14, and then continues to extend downward through the electrode unit M14 and the connection portion between the electrode unit M14 and the electrode unit M1. 9 to the electrode unit M19 and connected to the signal pad 1162 of the electrode unit M19, then extending to the left through the connection portion 112 between the electrode unit M19 and the electrode unit M20 to the electrode unit M20, then extending upward through the connection portion 112 between the electrode unit M20 and the electrode unit M15 to the electrode unit M15, then extending to the left through the connection portion 112 between the electrode unit M15 and the electrode unit M16 to the electrode unit M16, then extending upward through the connection portion 112 between the electrode unit M16 and the electrode unit M10 to the electrode unit M10, then extending to the right through the connection portion 112 between the electrode unit M10 and the electrode unit M16 The other branch extends upward to the top of the wiring portion 113 and then extends to the right through the connection portion 112 between the electrode unit M7 and the electrode unit M13, and then continues to extend downward through the electrode unit M13 and the connection portion 112 between the electrode unit M13 and the electrode unit M18 to the electrode unit M18 and is connected to the signal pad 1162 of the electrode unit M18, and then extends to the right through the connection portion 112 between the electrode unit M18 and the electrode unit M17 to the electrode unit M18. Unit M17, and then extends upward through the connecting portion 112 between the electrode unit M17 and the electrode unit M12 to the electrode unit M12, and then extends rightward through the connecting portion 112 between the electrode unit M12 and the electrode unit M11 to the electrode unit M11, and then extends upward through the connecting portion 112 between the electrode unit M11 and the electrode unit M5 to the electrode unit M5, and then continues to extend leftward through the connecting portion 112 between the electrode unit M5 and the electrode unit M6 to the electrode unit M6, and then extends upward through the connecting portion 112 between the electrode unit M6 and the electrode unit M1 to the electrode unit M1 and is connected to the signal pad 1162 of the electrode unit M1.

[0057] The third signal trace L33 short-circuits all the signal pads 1162 corresponding to the temperature sensors 14 of the electrode units M16, M9, M7, and M11, so as to connect the signal terminals 142 corresponding to the temperature sensors 14 of the electrode units M16, M9, M7, and M11 to the same detection channel (see below for details). The specific routing of the third signal trace L33 is as follows: it is led out from a corresponding gold finger 1131 on the back of the wiring portion 113 and then divided into two branches, one of which extends upward to the top of the wiring portion 113 and then extends to the left through the connection portion 112 between the electrode unit M8 and the electrode unit M14, and then continues to extend downward through the electrode unit M14 and the connection portion 112 between the electrode unit M14 and the electrode unit M19. To electrode unit M19, then extends leftward through the connection portion 112 between electrode unit M19 and electrode unit M20 to electrode unit M20, then extends upward through the connection portion 112 between electrode unit M20 and electrode unit M15 to electrode unit M15, then extends leftward through the connection portion 112 between electrode unit M15 and electrode unit M16 to electrode unit M16 and is connected to the signal pad 1162 of electrode unit M16, then extends upward through the connection portion 112 between electrode unit M16 and electrode unit M10 to electrode unit M10, then extends rightward through the connection portion 112 between electrode unit M10 and electrode unit M9 to electrode unit M9 and is connected to the electrode unit M16. The other branch extends upward to the top of the wiring portion 113 and then extends to the right through the connection portion 112 between the electrode unit M7 and the electrode unit M13, then continues to extend downward through the electrode unit M13 and the connection portion 112 between the electrode unit M13 and the electrode unit M18 to the electrode unit M18, then extends to the right through the connection portion 112 between the electrode unit M18 and the electrode unit M17 to the electrode unit M17, then extends upward through the connection portion 112 between the electrode unit M17 and the electrode unit M12 to the electrode unit M12, then extends to the right through the connection portion 112 between the electrode unit M12 and the electrode unit M11 to the electrode unit M1 1 and is connected to the signal pad 1162 of the electrode unit M11, and then extends upward through the connecting portion 112 between the electrode unit M11 and the electrode unit M5 to the electrode unit M5, and then continues to extend to the left through the connecting portion 112 between the electrode unit M5 and the electrode unit M6 to the electrode unit M6, and then extends upward through the connecting portion 112 between the electrode unit M6 and the electrode unit M1 to the electrode unit M1, and then extends to the left through the connecting portion 112 between the electrode unit M1 and the electrode unit M2 to the electrode unit M2, and finally extends downward through the connecting portion 112 between the electrode unit M2 and the electrode unit M7 to the electrode unit M7 and is connected to the signal pad 1162 of the electrode unit M7.

[0058] The fourth signal trace L34 short-circuits all the signal pads 1162 corresponding to the temperature sensors 14 of the electrode units M14, M10, M5, and M12, so as to connect the signal terminals 142 of the temperature sensors 14 of the electrode units M14, M10, M5, and M12 to the same detection channel (see below for details). The specific routing of the fourth signal trace L33 is as follows: it is led out from the corresponding gold finger 1131 on the back of the wiring portion 113 and then divided into two branches, one of which goes up to the top of the wiring portion 113 and then extends to the left through the connection portion between the electrode unit M8 and the electrode unit M14. 112, then continues downward to the electrode unit M14 and connects to the signal pad 1162 of the electrode unit M14, then continues downward to pass through the connection portion 112 between the electrode unit M14 and the electrode unit M19 to the electrode unit M19, then extends leftward to pass through the connection portion 112 between the electrode unit M19 and the electrode unit M20 to the electrode unit M20, then extends upward to pass through the connection portion 112 between the electrode unit M20 and the electrode unit M15 to the electrode unit M15, then extends leftward to pass through the connection portion 112 between the electrode unit M15 and the electrode unit M16, and finally extends leftward to pass through the connection portion 112 between the electrode unit M15 and the electrode unit M16. The other branch extends upward to the top of the wiring portion 113 and then extends to the right through the connection portion 112 between the electrode unit M7 and the electrode unit M13, and then continues to extend downward through the electrode unit M13, the connection portion 112 between the electrode unit M13 and the electrode unit M18 to the electrode unit M18, and then extends to the right through the connection portion 112 between the electrode unit M7 and the electrode unit M13 to the electrode unit M18, and then extends to the right through the connection portion 112 between the electrode unit M7 and the electrode unit M13. The connecting portion 112 between M18 and the electrode unit M17 extends to the electrode unit M17, then extends upward through the connecting portion 112 between the electrode unit M17 and the electrode unit M12 to the electrode unit M12 and is connected to the signal pad 1162 of the electrode unit M12, then extends to the right through the connecting portion 112 between the electrode unit M12 and the electrode unit M11 to the electrode unit M11, then extends upward through the connecting portion 112 between the electrode unit M11 and the electrode unit M5 to the electrode unit M5 and is connected to the signal pad 1162 of the electrode unit M5.

[0059] Combine Figure 7As shown, the ends of the four signal traces L3 on the connection portion 113 are connected one-to-one to four corresponding gold fingers 3121 located on the back of the connection portion 113. The front of the connection portion 113 also features a small jumper for the second signal trace L32, a small jumper for the third signal trace L33, and a small jumper for the fourth ground trace L34. Please note that each signal trace L3 must pass through the corresponding via (unnumbered) on the back of the main body 111 to the front of the main body 111 and connect to the corresponding signal pad 1162.

[0060] The following key references Figure 10 , the control method of temperature detection of the electrode patch 100 of the present application is described in detail, and the wire 5 of the electrode patch 100 is plugged into the connector (unnumbered) of the adapter 200 to realize the circuit connection between the electrode patch 100 and the adapter 200.

[0061] The twenty electrode units 10 on the electrode patch 100 are arranged in a two-dimensional array in a circuit arrangement, and are arranged in four rows and five columns. Specifically, from the row upward, the five electrode units 10 in the first row are electrode units M20, M19, M16, M14, and M15, respectively, wherein the ground terminals 141 of the temperature sensors 14 of the first four electrode units 10 are connected in parallel to the first ground trace L21; the five electrode units 10 in the second row are electrode units M3, M4, M9, M10, and M10, respectively, wherein the first four electrode units 10 are connected in parallel to the first ground trace L21. The grounding terminals 141 of the temperature sensors 14 are all connected in parallel to the second ground trace L22; the five electrode units 10 in the third row are electrode units M2, M1, M7, M8, and M6, respectively, wherein the grounding terminals 141 of the temperature sensors 14 of the first four electrode units 10 are all connected in parallel to the third ground trace L23; the five electrode units 10 in the fourth row are electrode units M17, M18, M11, M12, and M13, respectively, wherein the grounding terminals 141 of the temperature sensors 14 of the first four electrode units 10 are all connected in parallel to the fourth ground trace L24. Looking upward from the column, the four electrode units 10 in the first column are electrode units M20, M3, M2, and M17, and the signal ends 142 of the temperature sensors 14 of these electrode units 10 are all connected in parallel to the first signal trace L31; the four electrode units 10 in the second column are electrode units M19, M4, M1, and M18, and the signal ends 142 of the temperature sensors 14 of these electrode units 10 are all connected in parallel to the second signal trace L32; the four electrode units 10 in the third column are electrode units M16, M9, M7, and M11, and these electrode units The signal ends 142 of the temperature sensors 14 of each unit 10 are all connected in parallel to the third signal trace L33; the four electrode units 10 in the fourth column are electrode units M14, M10, M5, and M12, respectively, and the signal ends 142 of the temperature sensors 14 of each of these electrode units 10 are all connected in parallel to the fourth signal trace L34; the four electrode units 10 in the fifth column are electrode units M15, M8, M6, and M13, respectively, and the four electrode units 10 in the fifth column are not provided with temperature sensors 14, so no ground trace L2 and signal trace L3 are connected.

[0062] The adapter 200 includes a controller 201, an analog-to-digital conversion module 202 connected to the controller 201, a communication unit 203, and a power module 204 connected to the controller 201, the analog-to-digital conversion module 202 and the communication unit 203. The power module 204 provides a DC power supply VCC for each electronic component of the adapter 200. Figure 10 The electrical connection between one electrode patch 100 and the adapter 200 is only taken as an example for detailed description. Corresponding to each electrode patch 100 , the adapter 200 is further provided with a set of grounding switches 205 and a set of voltage divider resistors 206 .

[0063] The adapter 200 is equipped with an AC line (unnumbered) electrically connected to the AC trace L1 to transmit an alternating current signal to the electrode patch 100, multiple ground lines (unnumbered) electrically connected one-to-one with the multiple ground traces L2, and multiple signal lines (unnumbered) electrically connected one-to-one with the multiple signal traces L3 and connected to the power module 204 via a corresponding voltage divider resistor 206 to provide DC power to each temperature sensor 14. The ground switch 205 can control the opening or closing of the corresponding ground trace L2, thereby controlling the power on and off of the temperature sensor 14 of each electrode unit 10 in the corresponding row.

[0064] The controller 201 is communicatively connected to each set of grounding switches 205 to control the on / off status of each grounding switch 205, thereby controlling the conduction and disconnection of each grounding trace L2. The analog-to-digital conversion module 202 includes four detection channels A, B, C, and D. The first through fourth signal traces L31 are connected to corresponding detection channels A, B, C, and D via corresponding circuit lines (not numbered). Each detection channel A, B, C, and D receives a temperature detection signal from the temperature sensor 14 connected to the corresponding signal trace L3. The analog-to-digital conversion module 202 converts the temperature detection signal from an analog signal to a digital signal. The communication unit 203 receives the digital signal output by the analog-to-digital conversion module 202 and transmits the digital signal to an electric field generator (not shown). The electric field generator (not shown) is further configured to control and adjust the voltage, current, or power of the AC signal provided to the multiple electrode units 10 of the electrode patch 100 based on the received digital signal. For example, when any of the multiple received digital signals exceeds a preset safety threshold temperature (e.g., 41°C, 42°C, etc.) stored in controller 201, the voltage, current, or power of the AC signal output by the electric field generator (not shown) can be appropriately reduced to prevent low-temperature burns on the patient's skin. The above-mentioned preset threshold temperature and preset threshold can be determined based on human safety thresholds. Communication unit 203 is controlled by controller 201 and serially transmits the digital signals converted by multiple analog-to-digital conversion modules 202.

[0065] The transmission of AC signals to the electrode units 10 and the transmission of DC signals to the electrode units 10 for temperature detection signal collection are staggered. When an AC signal is required to be applied to each electrode unit 10 of the electrode patch 100, all four grounding switches 205 are disconnected, and the electric field generator (not shown) outputs the AC signal to the AC line in the adapter 200. The AC signal is then applied to the dielectric element 13 of each electrode unit 10 via the AC trace L1 connected to the AC line. When the temperature detection signal of each temperature sensor 14 in the electrode patch 100 is required to be collected, the electrical connection between the AC trace L1 of the electrode patch 100 and the AC line of the adapter 200 is disconnected.

[0066] When collecting temperature detection signals from each temperature sensor 14 in the electrode patch 100, the four signal traces L3 remain connected. Then, the ground switches 205 are turned on in turn, thereby turning on the temperature sensors 14 in each row of electrode units 10 in turn, thereby acquiring temperature detection signals from each row of temperature sensors 14 in batches. The specific process is as follows: The four ground switches 205 connected to the first ground trace L21 to the fourth ground trace L24 are defined as the first ground switch 2051 to the fourth ground switch 2054, respectively. First, the first grounding switch 2051 is closed, and the other grounding switches 2052, 2053, and 2054 are opened. The four detection channels A, B, C, and D of the analog-to-digital conversion module 202 can simultaneously obtain temperature detection signals of the four electrode units M20, M19, M16, and M14 in the first row. Then, the second grounding switch 2052 is closed, and the other grounding switches 2051, 2053, and 2054 are opened. The four detection channels A, B, C, and D of the analog-to-digital conversion module 202 can simultaneously obtain temperature detection signals of the four electrode units M3, M4, M9, and M10 in the second row. Then, by closing the third grounding switch 2053 and opening the other grounding switches 2051, 2052, and 2054, the four detection channels A, B, C, and D of the analog-to-digital conversion module 202 can simultaneously obtain the temperature detection signals of the four electrode units M2, M1, M7, and M5 in the third row. Finally, by closing the fourth grounding switch 205-4 and opening the other grounding switches 2051, 2052, and 2053, the four detection channels A, B, C, and D of the analog-to-digital conversion module 202 can simultaneously obtain the temperature detection signals of the four electrode units M17, M18, M11, and M12 in the fourth row. In this way, the temperature detection signals of all temperature sensors 14 can be collected.

[0067] Sixteen temperature sensors 14 are selectively provided on the twenty electrode units 10 of the electrode patch 100 of the present invention. The shared ground trace L2 and signal trace L3 reduce the total number of conductive traces required for the temperature sensors 14, simplifying the wiring scheme. Furthermore, the ground trace L2 and signal trace L3 are all located on the back side of the flexible circuit board 11, preventing signal crosstalk and improving signal transmission quality. Furthermore, the front side of the flexible circuit board 11 essentially only has the AC trace L1, which provides more ample wiring space.

[0068] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electrode patch for electric field therapy of tumors, comprising an electrode array, the electrode array comprising twenty electrode units arranged in a spatial structure of four rows and six columns, wherein the first and last rows each have four electrode units located in the second to fifth columns, respectively, and the middle two rows each have six electrode units located in the first to sixth columns, respectively; the twelve electrode units located at the edge of the electrode array are defined as edge electrode units, the four electrode units located in the center of the electrode array are defined as center electrode units, and the remaining four electrode units between the edge and the center of the electrode array are defined as middle electrode units; characterized in that: The electrode array also includes sixteen temperature sensors, which are respectively arranged on the twelve edge electrode units, the two diagonally arranged center electrode units, and the two diagonally arranged middle electrode units. The electrode array has a flexible circuit board, which is provided with an AC trace. The electrode units have dielectric elements. The AC trace is provided on the front surface of the flexible circuit board and is electrically connected to each of the dielectric elements. The flexible circuit board also has four ground traces and four signal traces. The sixteen temperature sensors are arranged in four rows and four columns on the circuit. The ground trace is provided on the back surface of the flexible circuit board and is electrically connected to the ground terminals of each temperature sensor in a corresponding row on the circuit. The four signal traces are also provided on the back surface of the flexible circuit board and are electrically connected to the signal terminals of each temperature sensor in a corresponding column on the circuit. During temperature detection, the four signal traces remain conductive, and the four ground traces are turned on in turn to obtain temperature detection signals from each temperature sensor row by row.

2. The electrode patch according to claim 1, characterized in that The sixteen temperature sensors are spatially arranged in a centrally symmetrical manner relative to the center of the matrix formed by the twenty electrode units.

3. The electrode patch according to claim 2, characterized in that: In terms of spatial structure, another central electrode unit without the temperature sensor is spaced between the central electrode unit provided with the temperature sensor and the intermediate electrode unit provided with the temperature sensor in each of the second and third rows.

4. The electrode patch according to claim 3, characterized in that: In terms of spatial structure, the twenty electrode units are numbered M1 to M20 from top to bottom and from left to right, wherein the electrode units in the first row include electrode unit M1 to electrode unit M4, the electrode units in the second row include electrode unit M5 to electrode unit M10, the electrode units in the third row include electrode unit M11 to electrode unit M16, and the electrode units in the fourth row include electrode unit M17 to electrode unit M20; in terms of circuit connection, one ground trace short-circuit and ground the ground ends of the temperature sensors of the electrode units M20, M19, M16, and M14, one ground trace short-circuit and ground the ground ends of the temperature sensors of the electrode units M3, M4, M9, and M10, one ground trace short-circuit and ground the ground ends of the temperature sensors of the electrode units M2, M1, M7, and M5, and one ground trace short-circuit and ground the ground ends of the temperature sensors of the electrode units M17, M18, M11, and M12.

5. The electrode patch according to claim 4, characterized in that: In terms of circuit connection, one signal trace short-circuits all the signal ends of the temperature sensors of the electrode units M20, M3, M2, and M17, one signal trace short-circuits all the signal ends of the temperature sensors of the electrode units M19, M4, M1, and M18, one signal trace short-circuits all the signal ends of the temperature sensors of the electrode units M16, M9, M7, and M11, and one signal trace short-circuits all the signal ends of the temperature sensors of the electrode units M14, M10, M5, and M12.

6. The electrode patch according to claim 1, characterized in that The flexible printed circuit board is provided with a plurality of main body parts arranged at intervals, a plurality of connection parts connecting two adjacent main body parts, and a wiring part. A conductive plate is provided on the front side of the main body part. The dielectric element is provided on the front side of the main body part and is electrically connected to the conductive plate. The temperature sensor is provided on the front side of the main body part. A ground pad electrically connected to the ground end and a signal pad electrically connected to the signal end are provided on the front side of the main body part.

7. The electrode patch according to claim 6, characterized in that: The electrode array is provided with a diode connected in series with the temperature sensor, and the front of part of the main body is also provided with an anode pad and a cathode pad electrically connected to the diode. The anode pad is electrically connected to the ground pad through a pad trace, and the cathode pad is electrically connected to the ground trace.

8. The electrode patch according to claim 6, characterized in that The connection part is provided with five gold fingers on the front and back sides respectively. The AC trace is led out from one of the gold fingers on the front side of the connection part and extends on the front side of the flexible circuit board; the four ground traces are led out from the other four gold fingers on the front side of the connection part and pass through the connection part to the back side of the flexible circuit board and extend on the back side of the flexible circuit board.

9. The electrode patch according to claim 8, characterized in that: The four signal traces are respectively led out from the four gold fingers on the back of the wiring portion and extend on the back of the flexible circuit board.

10. The electrode patch according to claim 9, characterized in that: It also includes a backing, a number of supporting members and a number of adhesive members. The electrode array is adhered to the backing, the supporting members are adhered to the backing and arranged around each of the electrode units, and the adhesive members cover each of the supporting members and each of the electrode units. The electrode array is also provided with a number of insulating plates fixed on the back of each of the main bodies.

11. A tumor electric field treatment device, characterized in that: The invention comprises an electric field generator and the electrode patch according to any one of claims 1 to 10 electrically connected to the electric field generator.

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