Tumor electric field treatment system

Abstract

The invention provides a tumor electric field treatment system which comprises an electric field generator and a plurality of pairs of electrode plates electrically connected with the electric field generator, each electrode plate comprises an electrode array, and each electrode array comprises two trunks arranged in parallel and a plurality of free branches extending outwards from the two trunks. A plurality of electrode units and connecting parts for connecting two adjacent electrode units are arranged on the trunk and the branches; the plurality of electrode units comprise a plurality of first electrode units with temperature sensors; the electrode array is also provided with a path of AC (Alternating Current) traces for transmitting AC electric signals to the electrode units; the grounding traces are used for short-circuiting and grounding the grounding ends of the temperature sensors of the corresponding first electrode units; and the signal traces are used for connecting the signal ends of the temperature sensors of the corresponding first electrode units in parallel and are matched with the grounding traces to transmit temperature detection signals of the corresponding first electrode units in a time-sharing manner. Comprehensive temperature measurement can be achieved, and the body surface of a patient is prevented from being scalded by low temperature

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to a tumor electric field therapy system. Background Art

[0002] Tumor electric field therapy is a tumor treatment method that uses a special electric field generator to generate a low-intensity, medium-high frequency, alternating electric field to interfere with the mitotic process of tumor cells. Studies have shown that electric field therapy is effective in treating glioblastoma, non-small cell lung cancer, malignant pleural mesothelioma and other diseases. The electric field applied by this treatment method can affect the aggregation of microtubule proteins, prevent spindle formation, inhibit the mitotic process, and induce apoptosis of cancer cells. The tumor electric field treatment system mainly includes an electric field generator, an adapter, and multiple pairs of electrodes. The electric field generator generates an alternating electrical signal and transmits the alternating electrical signal to the electrode through the adapter. The electrode sheets are applied in pairs to the body surface on opposite sides of the patient's tumor area, and an alternating current signal is applied between each pair of electrodes to non-invasively apply the tumor treatment electric field to the tumor area.

[0003] The existing Chinese invention patent announcement No. 114099954 discloses an electrode sheet with 20 electrode units, but only eight electrode units of the electrode sheet are provided with temperature sensors, which makes it difficult to achieve comprehensive temperature monitoring of the entire electrode sheet. There is a problem that the temperature of some electrode units exceeds the human body temperature safety threshold, causing low-temperature burns on the patient's body surface. Increasing the number of temperature sensors can solve this problem, but it will put forward higher requirements on the wiring scheme on the electrode sheet. Too many conductive traces will lead to complicated wiring and increase the weight of the electrode array, affecting the feeling during application.

[0004] Therefore, it is necessary to provide an improved tumor electric field treatment system to overcome the problems existing in the prior art. Summary of the invention

[0005] The present application provides a tumor electric field therapy system capable of comprehensive temperature measurement and reasonable wiring.

[0006] Specifically, the present application is implemented through the following technical solutions: a tumor electric field treatment system, which includes an electric field generator and several pairs of electrode sheets electrically connected to the electric field generator, the electrode sheets include an electrode array, the electrode array includes two parallel main trunks and several free branches extending outward from the two main trunks respectively, and the main trunks and the branches are each provided with a plurality of electrode units and a connecting portion connecting two adjacent electrode units; the plurality of electrode units include a plurality of first electrode units with temperature sensors, and the electrode array is also provided with an AC trace for transmitting an alternating current signal to each electrode unit, a plurality of ground traces for short-circuiting the ground ends of the temperature sensors of the corresponding first electrode units to ground, and a plurality of signal traces for connecting the signal ends of the temperature sensors of the corresponding first electrode units in parallel and cooperating with the ground traces to transmit the temperature detection signals of the corresponding first electrode units in a time-sharing manner.

[0007] According to one embodiment of the present invention, the tumor electric field therapy system also includes an AC line, a plurality of grounding switches and a plurality of detection channels, the AC line is connected to the AC trace, the grounding trace is connected to the grounding switch in a one-to-one correspondence, and the signal trace is connected to the detection channel in a one-to-one correspondence; the detection channels are all turned on when collecting the temperature detection signal of the first electrode unit, and the grounding switches are closed in sequence when collecting the temperature detection signal of the first electrode unit.

[0008] According to one embodiment of the present invention, the connecting portion includes a first connecting portion connecting two adjacent electrode units located in the same branch and a second connecting portion connecting two adjacent electrode units located in the same trunk, and the electrode unit located at the outermost end of the branch is only connected to one of the first connecting portions.

[0009] According to an embodiment of the present invention, a diode is connected in series between the ground terminal of the temperature sensor and the corresponding ground trace.

[0010] According to an embodiment of the present invention, the plurality of electrode units further comprises at least one second electrode unit without a temperature sensor.

[0011] According to one embodiment of the present invention, there are twenty electrode units, including sixteen first electrode units and four second electrode units; the sixteen first electrode units are arranged in four rows and four columns in circuit connection, and there are four ground traces, each of which is respectively connected to the ground end of the temperature sensors of the four first electrode units corresponding to each other and located in the same row; there are four signal traces, each of which is respectively connected to the signal end of the temperature sensors of the four first electrode units corresponding to each other and located in the same row.

[0012] According to one embodiment of the present invention, the twenty electrode units are distributed in four rows and six columns in the spatial structure, the first row and the fourth row are each provided with four electrode units respectively located on the second to fifth columns, and the second row and the third row are each provided with six electrode units respectively located on the first to sixth columns.

[0013] According to one embodiment of the present invention, each of the electrode units located in the first row and the fourth row, and each of the electrode units located in the second row and the third row and respectively located in the first column, the third column, the fourth column and the sixth column are all the first electrode units; and each of the electrode units located in the second row and the third row and located in the second column and the fifth column are all the second electrode units.

[0014] According to one embodiment of the present invention, the ground ends of the temperature sensors of the two first electrode units in the first row and the two first electrode units in the second row are connected to the same ground trace; the ground ends of the temperature sensors of the remaining two first electrode units in the first row and the remaining two first electrode units in the second row are connected to the same ground trace; the ground ends of the temperature sensors of the two first electrode units in the third row and the two first electrode units in the fourth row are connected to the same ground trace; the ground ends of the temperature sensors of the remaining two first electrode units in the third row and the remaining two first electrode units in the fourth row are connected to the same ground trace.

[0015] According to one embodiment of the present invention, the signal ends of the temperature sensors of the two first electrode units in the first row and the two first electrode units in the fourth row are all connected to the same signal trace; the signal ends of the temperature sensors of the two first electrode units in the second row and the two first electrode units in the third row are all connected to the same signal trace; the signal ends of the temperature sensors of another first electrode unit in the first row, another first electrode unit in the second row, another first electrode unit in the third row and another first electrode unit in the fourth row are all connected to the same signal trace; the signal ends of the temperature sensors of the remaining first electrode unit in the first row, the remaining first electrode unit in the second row, the remaining first electrode unit in the third row and the remaining first electrode unit in the fourth row are all connected to the same signal trace.

[0016] According to one embodiment of the present invention, the electrode array is provided with a flexible circuit board, the four ground traces and the four signal traces are mainly arranged on the back side of the flexible circuit board, and one AC trace is arranged on the front side of the flexible circuit board.

[0017] The tumor electric field therapy system of the present application reasonably sets the number and position of temperature sensors to achieve comprehensive temperature measurement and avoid low-temperature burns on the patient's body surface. At the same time, a reasonable wiring scheme is adopted to reduce the wiring difficulty and weight of the electrode array.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a framework diagram of a tumor electric field treatment system according to one embodiment of the present application; Figure 2 A plan view of an electrode sheet of a tumor electric field treatment system according to the present application; Figure 3 for Figure 2 The plan view of the electrode sheet shown after the adhesive is removed; Figure 4 for Figure 2 A partial exploded perspective view of the electrode sheet shown; Figure 5 for Figure 4 A plan view of the electrode array of the electrode sheet shown; Figure 6 for Figure 5 An exploded perspective view of the electrode array shown; Figure 7 for Figure 6 The wiring diagram of the front side of the flexible circuit board of the electrode array shown; Figure 8 for Figure 6 A wiring diagram of the ground traces on the back side of the flexible circuit board of the electrode array shown; Fig. 9 for Figure 6 A wiring diagram of the signal traces on the back side of the flexible circuit board of the electrode array shown; Fig.10 This is a schematic diagram of the circuit connection between an electrode and an adapter in a tumor electric field therapy system.

[0020] Description of reference numerals: Tumor electric field treatment system 100, electric field generator 10, adapter 20, controller 21, analog-to-digital conversion module 22, communication unit 23, voltage divider resistor 24, ground switch 25, first ground switch 25-1, second ground switch 25-2, third ground switch 25-3, fourth ground switch 25-4, power module 26, AC line 27, electrode sheet 30, electrode array 31, trunk L1, L2, branch L3, electrode unit 310, first electrode unit 310A, second electrode unit 310B, connecting part 311, first connecting part 3111, second connecting part 3112, connecting part 312, gold finger 3121, flexible circuit board 313, AC trace 3131, connecting Ground trace 3132, first ground trace 3132-1, second ground trace 3132-2, third ground trace 3132-3, fourth ground trace 3132-4, signal trace 3133, first signal trace 3133-1, second signal trace 3133-2, third signal trace 3133-3, fourth signal trace 3133-4, main body 314, conductive plate 3141, ground pad 3142, signal pad 3143, dielectric element 315, through hole 3151, insulating plate 316, temperature sensor 317, ground terminal 3171, signal terminal 3172, diode 318, backing 32, support member 33, through hole 331, adhesive member 34, connector 40. DETAILED DESCRIPTION

[0021] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices, systems, equipment and methods consistent with some aspects of the present application.

[0022] refer to Figure 1 As shown, the tumor electric field treatment system 100 includes an electric field generator 10, an adapter 20 and a plurality of electrode sheets 30 arranged in pairs, and the adapter 20 electrically connects the electric field generator 10 and each electrode sheet 30. The electric field generator 10 generates an alternating current signal that meets the treatment requirements, and the adapter 20 receives the alternating current signal output from the electric field generator 10 and transmits the alternating current signal to the electrode sheet 30. The paired electrode sheets 30 are attached to the body surface of the patient's corresponding tumor area, and the alternating current signal is applied to the patient's tumor area to interfere with or prevent the mitosis of the patient's tumor cells, thereby achieving the purpose of treating the tumor.

[0023] refer to Figures 2 to 4As shown, the electrode sheet 30 includes an electrode array 31, a backing 32, a plurality of support members 33 and a plurality of adhesive members 34. The electrode array 31 is adhered to the backing 32 and electrically connected to the adapter 20 through a wire (not shown). The electrode array 31 is provided with twenty electrode units 310, which are arranged in four rows and six columns in space. The support member 33 is provided corresponding to two or three electrode units 310 in the same row. The support member 33 is provided with a plurality of through holes 331, and is adhered to the backing 32 in a manner that each through hole 331 surrounds each corresponding electrode unit 310. The inner diameter of the through hole 331 is slightly larger than the outer diameter of the electrode unit 310 to facilitate installation. The support member 33 can support and protect the electrode unit 310. The adhesive member 34 is also provided corresponding to two or three electrode units 310 in the same row, covering each row of electrode units 310 and the corresponding support member 33. In other embodiments, the adhesive member 34 can also be laid separately corresponding to each electrode unit 310. The electrode sheet 30 is applied to the patient's body surface with the exposed side of the adhesive member 34 facing the patient. Here, the side of the electrode sheet 30 facing the patient is defined as the front side, and the opposite side is defined as the back side. The backing 32 is a mesh non-woven fabric, and a biocompatible adhesive (not shown) is coated on the front side to tightly adhere the backing 32 to the patient's body surface. The support member 33 is made of foam material. The adhesive member 34 has double-sided adhesive, preferably conductive gel, which can keep the skin surface moist and avoid causing skin itching.

[0024] refer to Figure 5 As shown, the twenty electrode units 310 of the electrode array 31 are arranged both axially and centrally symmetrically. The twenty electrode units 310 are arranged in four rows and six columns. Specifically, the first row and the fourth row are each provided with four electrode units 310, and the two middle rows (i.e., the second row and the third row) are each provided with six electrode units 310. Among them, the six electrode units 310 in each of the two middle rows are arranged in six columns, respectively located on the first to sixth columns; the four electrode units 310 in each of the first and fourth rows are arranged in four columns, respectively located on the second to fifth columns.

[0025] The electrode array 31 also includes a plurality of connection parts 311 and a wiring part 312 for connecting two adjacent electrode units 310. The wiring part 312 is arranged between two adjacent parallel connection parts 311 and is arranged in a "T" shape, and is used for externally connecting wires (not shown) to electrically connect with the adapter 20. The connection part 311 connects the electrode array 31 into a whole, and is also used for routing to ensure that each electrode unit 310 can receive an AC signal. The plurality of connection parts 311 include a first connection part 3111 connecting two adjacent electrode units 310 located in the same row and a second connection part 3112 connecting two adjacent electrode units 310 located in the same column. Among them, the wiring part 312 connects two parallel second connection parts 3112 located on the third column and the fourth column (i.e., the middle two columns) and located between the second row and the third row. The two adjacent electrode units 310 in the third and fourth columns of each row are disconnected, and no first connection portion 3111 is provided. The first connection portion 3111 is provided between the two adjacent electrode units 310 in other adjacent columns of each row. That is, the electrode array 31 is divided into two left and right parts, and the two parts are connected only by the wiring portion 312, so the positions of the left and right parts are relatively independent, and the application position is more flexible. A second connection portion 3112 is provided between any two adjacent electrode units 310 in the third and fourth columns, while the two adjacent electrode units 310 in other columns are disconnected, and no second connection portion 3112 is provided, that is, the second connection portion 3112 is only provided between any two adjacent electrode units 310 in the two middle columns. Therefore, there is no restraint between the electrode units 310 in other columns, and the degree of freedom is relatively high.

[0026] It can be understood that the electrode units 310 and the corresponding second connecting parts 3112 located in the third and fourth columns together form two parallel trunks L1 and L2 of the electrode array 31, and the electrode units 310 and the corresponding first connecting parts 3111 in each other row respectively form several branches L3 of the electrode array 31, that is, the several branches L3 are formed by the horizontal extension of the trunks L1 and L2. In other words, the electrode units 310 and the connecting parts 311 located in the third and fourth columns of the electrode array 31 form two basically independent trunks L1 and L2, and each row is provided with two branches L3 extending horizontally from the two trunks L1 and L2 respectively. The electrode units 310 at the opposite ends of each row are all located at the end of each branch L3, and are only connected to an adjacent electrode unit 310 in the same row through the corresponding connection portion 311, that is, the two electrode units 310 at the two ends of each row are only connected to an adjacent electrode unit 310 through the corresponding connection portion 311; the four electrode units 310 located on the trunks L1 and L2 and located in the two middle rows, that is, the four electrode units 310 located at the center of the electrode sheet 30 are respectively connected to the three surrounding electrode units 310 through the connection portion 311; the other electrode units 310 located on the trunks L1 and L2 and the other electrode units 310 located on the branch L3 are all connected to the two surrounding electrode units 310 one by one. In other words, the two electrode units 310 at the two ends of each row are only connected to the adjacent electrode unit 310 through a first connection portion 3111. Therefore, the eight electrode units 310 located on the left and right sides of the electrode sheet 30 are respectively connected only to one of the electrode units 310 adjacent to them, and thus have a higher degree of freedom and a larger range of motion, and can be better adhered to the patient's body surface to avoid wrinkles. In addition, except for the four electrode units 310 located at the center of the electrode array 31 and the eight electrode units 310 located on the left and right sides of the electrode array 31, the other electrode units 310 are also only connected one by one to the two surrounding electrode units 310 through corresponding connecting parts 311, so these electrode units 310 also have a certain degree of freedom and a certain range of motion, which can also improve the adherence of the electrode sheet 30.

[0027] refer to Figure 6 As shown, Figure 6 The hierarchical structure of the electrode array 31 is shown. The electrode array 31 includes a flexible circuit board 313. The flexible circuit board 313 includes a plurality of main bodies 314, a plurality of connecting parts 311 and a plurality of wiring parts 312 arranged corresponding to each electrode unit 310. The connecting parts 311 connect two adjacent main bodies 314. The electrode array 31 also includes a plurality of dielectric elements 315, a plurality of insulating plates 316, a plurality of temperature sensors 317 and a plurality of diodes 318 (see FIG. Fig.10), a conductive plate 3141 is provided on the front of the main body 314, and a dielectric element 315 is provided on the front of the main body 314 in a one-to-one correspondence manner and is welded to the conductive plate 3141. A through hole 3151 is provided at the center of the dielectric element 315, and a temperature sensor 317 is located on the front of the main body 314 and is selectively provided in the through hole 3151 of a part of the dielectric element 315. An insulating plate 316 is provided on the back of the main body 314 in a one-to-one correspondence manner. The main body 314, the dielectric element 315 and the insulating plate 316 are arranged in a centrally overlapping shape to form an electrode unit 310 together. In this embodiment, the number of temperature sensors 317 is sixteen. Except for the four electrode units 310 located in the second and third rows and in the second and fifth columns, the other sixteen electrode units 310 are provided with temperature sensors 317 and diodes 318 installed on the main body 314 and accommodated in the opening 3151 of the dielectric element 315. The diode 318 is connected in series with the corresponding temperature sensor 317. The electrode unit 310 provided with the temperature sensor 317 and the diode 318 is the first electrode unit 310A, and the electrode unit 310 not provided with the temperature sensor 317 and the diode 318 is the second electrode unit 310B. In other embodiments, the temperature sensors 317 may also have different numbers and different arrangements, which are not limited here.

[0028] In this embodiment, the dielectric element 315 is a ceramic sheet. The dielectric element 315 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. The polymer dielectric layer can be formed on the main body 314 by evaporation, sputtering or ion plating vapor deposition, printing, spraying or casting; in addition, the insulating plate 316 is not necessary and can be selectively set according to needs.

[0029] The tumor electric field therapy system 100 and its electrode sheet 30 provided in the present application can ensure that the temperature of the electrode sheet 30 can be fully monitored while allowing most electrode units 310 to have good freedom, thereby improving the adhesion of the electrode sheet 30 and preventing wrinkles when applied to a curved body surface. Therefore, when the tumor electric field therapy system 100 is in use, the electrode sheet 30 can better apply the received alternating current signal to the tumor area corresponding to the curved body surface, thereby avoiding a sharp increase in heat generation and a decrease in alternating electric field strength at the corresponding position due to poor application of the electrode sheet 30, thereby affecting the treatment effect.

[0030] refer to Figures 7 to 9As shown, the front and back sides of the flexible circuit board 313 are also provided with a plurality of conductive traces, wherein the conductive trace on the front side is mainly an AC trace 3131, and the plurality of gold fingers 3121 of the connection portion 312 include a gold finger 3121 for transmitting an AC signal, and the AC trace 3131 extends from the gold finger 3121 along each connection portion 311 to each main body portion 314 and is electrically connected with the corresponding conductive plate 3141 on each main body portion 314, so as to transmit an AC signal to the dielectric element 315 of each electrode unit 310. Two parallel AC traces 3131 are provided on each connection portion 311 to ensure the stability of AC signal transmission.

[0031] The main body 314 is provided with a ground pad 3142 and a signal pad 3143 corresponding to the temperature sensor 317 at the center of the conductive pad 3141. Fig.10 As shown, the temperature sensor 317 is provided with a ground terminal 3171 and a signal terminal 3172. The ground terminal 3171 is welded to the ground pad 3142, and the signal terminal 3172 is welded to the signal pad 3143. The ground terminal 3171 of each temperature sensor 317 is the ground terminal of the corresponding first electrode unit 310A, and the signal terminal 3172 of each temperature sensor 317 is the signal terminal of the corresponding first electrode unit 310A. The diode 318 is connected in series to the ground terminal 3171 of the temperature sensor 317. Specifically, the anode of the diode 318 is electrically connected to the ground terminal 3171 of the corresponding temperature sensor 317, and the cathode of the diode is electrically connected to the corresponding ground trace 3132. The main body 314 is also provided with an anode pad (not numbered) and a cathode pad (not numbered) corresponding to the diode 318 at the center of the conductive plate 3141. The anode pad (not labeled) is electrically connected to the ground pad 3142 through a corresponding pad trace (not labeled). The diode 318 can prevent the reverse flow of current to prevent the detection signal from other electrode units 310 from affecting the temperature sensor 317. The conductive traces on the back of the flexible circuit board 313 also include a plurality of ground traces 3132 and a plurality of signal traces 3133. Each ground trace 3132 extends from a corresponding gold finger 3121 along the corresponding connecting portion 311 to the corresponding ground pads 3142 on the multiple main body portions 314, so as to be electrically connected to the ground terminal 3171 of the corresponding temperature sensor 317, so as to ground the ground terminal 3171 of the corresponding temperature sensor 317; each signal trace 3133 extends from a corresponding gold finger 3121 along the corresponding connecting portion 311 to the signal pad 3143 provided on the corresponding main body portion 314, so as to be electrically connected to the signal terminal 3172 of the corresponding temperature sensor 317, so as to transmit a direct current signal to the corresponding temperature sensor 317, so as to detect the temperature at the corresponding electrode unit 310, and transmit the detected temperature signal to the adapter 20 or the electric field generator 10.

[0032] In this embodiment, in order to obtain the temperature detection signal of the temperature sensor 317, four grounding traces 3132 and four signal traces 3133 are provided on the flexible circuit board 313. The corresponding temperature sensors 317 in the plurality of electrode units 310 can share the corresponding grounding traces 3132 and signal traces 3133, and the temperature detection signals of each temperature sensor 317 are obtained in batches by grounding the four grounding traces 3132 in turn. The control method will be described in detail later. Compared with the method of setting an independent signal trace for each temperature sensor 317, this wiring method reduces the total number of conductive traces, reduces the wiring difficulty of the flexible circuit board 313, simplifies the manufacturing process of the flexible circuit board 313, and can also improve the flexibility of the flexible circuit board 313 and improve the fit during application.

[0033] In this embodiment, the wiring portion 312 is provided with ten gold fingers 3121, of which four gold fingers 3121 are respectively connected to four ground traces 3132 in a one-to-one correspondence; four gold fingers 3231 are respectively connected to four signal traces 3133 in a one-to-one correspondence, and one gold finger 3121 is connected to the AC trace 3131; one gold finger 3231 is connected to a shielding wire layer (not shown) of a conductive wire (not shown) and is grounded for electromagnetic shielding and preventing signal interference.

[0034] Continue to refer Figures 7 to 9As shown, the wiring scheme of the ground trace 3132 and the signal trace 3133 will be specifically described below. In terms of spatial structure, the twenty electrode units 310 are marked as electrode units M1 to M20 from top to bottom and from left to right according to their positions. Specifically, the four electrode units 310 in the first row are electrode units M1, M2, M3, and M4; the six electrode units 310 in the second row are electrode units M5, M6, M7, M8, M9, and M10; the six electrode units 310 in the third row are electrode units M11, M12, M13, M14, M15, and M16; and the four electrode units 310 in the fourth row are electrode units M17, M18, M19, and M20. The four ground traces 3132 are respectively the first ground trace 3132-1, the second ground trace 3132-2, the third ground trace 3132-3 and the fourth ground trace 3132-4; ​​the four signal traces 3133 are respectively the first signal trace 3133-1, the second signal trace 3133-2, the third signal trace 3133-3 and the fourth signal trace 3133-4. Among them, the electrode unit M6 located in the second row and the second column, the electrode unit M9 in the second row and the fifth column, the electrode unit M12 in the third row and the second column and the electrode unit M15 in the third row and the fifth column are all second electrode units 310B, that is, these four electrode units M6, M9, M12, M15 are not provided with corresponding temperature sensors 317 and diodes 318, and therefore do not need to be connected to the corresponding ground traces 3132 and signal traces 3133.

[0035] Key References Figure 8 As shown, it is a wiring diagram of each ground trace 3132 on the back of the flexible circuit board 313. The wiring scheme of the four ground traces 3132 is specifically described below from the front perspective of the flexible circuit board 313: The grounding terminals 3171 of the temperature sensors 317 of the electrode units M19, M20, M16, and M14 are all short-circuited to the first grounding trace 3132-1. The specific routing of the first grounding trace 3132-1 is as follows: upward and rightward through the end of the wiring portion 312 ( Figure 8 The electrode unit M16 extends downward and passes through the electrode units M14, M19, M20 and the corresponding connecting parts 311 in turn, and is connected to the grounding pad 3142 corresponding to the grounding terminal 3171 of the temperature sensor 317 of the electrode units M19 and M20 respectively; then it returns from the electrode unit M20 and passes through the electrode units M19, M14, M15 and the corresponding connecting parts 311 in turn to reach the electrode unit M16, and is connected to the grounding pad 3142 corresponding to the grounding terminal 3171 of the temperature sensor 317 of the electrode units M14 and M16 respectively.

[0036] The grounding terminals 3171 of the temperature sensors 317 of the electrode units M3, M4, M8, and M10 are all short-circuited to the second grounding trace 3132-2. The specific routing of the second grounding trace 3132-2 is as follows: upward and rightward through the end of the wiring portion 312 ( Figure 8 The electrode unit M4 extends upward (to the left in the figure), passes through the electrode units M8, M3, M4 and the corresponding connecting parts 311 in turn, and is connected to the grounding pad 3142 corresponding to the grounding terminal 3171 of the temperature sensor 317 of the electrode units M3 and M4 respectively; then it returns from the electrode unit M4 and passes through the electrode units M3, M8, M9 and the corresponding connecting parts 311 in turn to reach the electrode unit M10, and is connected to the grounding pad 3142 corresponding to the grounding terminal 3171 of the temperature sensor 317 of the electrode units M8 and M10 respectively.

[0037] The grounding terminals 3171 of the temperature sensors 317 of the electrode units M1, M2, M5, and M7 are all short-circuited to the third grounding trace 3132-3. The specific routing of the third grounding trace 3132-3 is as follows: upward and leftward through the end of the connection portion 312 ( Figure 8 The electrode unit M1 extends upward and passes through the electrode units M7, M2, M1 and the corresponding connecting parts 311 in turn, and is connected to the grounding pad 3142 corresponding to the grounding terminal 3171 of the temperature sensor 317 of the electrode units M7, M2, M1 respectively; then it returns from the electrode unit M1 and passes through the electrode units M2, M7, M6 and the corresponding connecting parts 311 in turn to reach the electrode unit M5, and is connected to the grounding pad 3142 corresponding to the grounding terminal 3171 of the temperature sensor 317 of the electrode unit M5.

[0038] The grounding terminals 3171 of the temperature sensors 317 of the electrode units M11, M13, M17, and M18 are all short-circuited to the fourth grounding trace 3132-4. The specific routing of the fourth grounding trace 3132-4 is as follows: upward and leftward through the end of the connection portion 312 ( Figure 8 The electrode unit M17 extends downward and passes through the electrode units M13, M18, M17 and the corresponding connecting parts 311 in turn, and is connected to the grounding pad 3142 corresponding to the grounding terminal 3171 of the temperature sensor 317 of the electrode units M13, M18, M17 respectively; then it returns from the electrode unit M17 and passes through the electrode units M18, M13, M12 and the corresponding connecting parts 311 in turn to reach the electrode unit M11, and is connected to the grounding pad 3142 corresponding to the grounding terminal 3171 of the temperature sensor 317 of the electrode unit M11.

[0039] The ends of the four ground traces 3132 on the wiring portion 312 all penetrate the corresponding parts of the wiring portion 312 and are respectively connected to the four corresponding gold fingers 3121 provided on the front of the wiring portion 312. When the first electrode unit 310A is provided with diodes 318 corresponding to each temperature sensor 317, the corresponding ground traces 3132 need to be electrically connected to the ground pads 3142 corresponding to the corresponding temperature sensor 317 through the corresponding diodes 318 and the anode pads (unnumbered) and cathode pads (unnumbered) corresponding to the diodes 318.

[0040] Key References Fig. 9 As shown, it is a wiring diagram of each signal trace 3133 on the back of the flexible circuit board 313. The wiring scheme of the four signal traces 3133 is specifically described from the front perspective of the flexible circuit board 313: The signal ends 3172 of the temperature sensors 317 of the electrode units M3, M7, M13, and M19 are all connected in parallel to the first signal trace 3133-1; the first signal trace 3133-1 is four branches branching upward from the end of the wiring portion 312 and extending to the left and right sides respectively. The specific routing of the four branches is: branching upward from the end of the wiring portion 312 and extending to the left side ( Fig. 9 A branch extending upwards through the corresponding connecting portion 311 and connected to the signal pad 3143 corresponding to the signal end 3172 of the temperature sensor 317 of the electrode unit M7; after branching upwards from the end of the connecting portion 312 and then to the left side ( Fig. 9 Another branch extending downwards through the corresponding connecting portion 311 and connected to the signal pad 3143 corresponding to the signal end 3172 of the temperature sensor 317 of the electrode unit M13; after branching upwards from the end of the connecting portion 312 and extending to the right side ( Fig. 9 A branch extending upwards through the electrode unit M8 and the corresponding connecting portion 311 reaches the electrode unit M3 and is connected to the signal pad 3143 corresponding to the signal end 3172 of the temperature sensor 317 of the electrode unit M3; after branching upwards from the end of the connecting portion 312 to the right side ( Fig. 9 Another branch extending to the left in the figure passes downward through the electrode unit M14 and the corresponding connecting portion 311 to reach the electrode unit M19 and is connected to the signal pad 3143 corresponding to the signal end 3172 of the temperature sensor 317 of the electrode unit M19.

[0041] The signal ends 3172 of the temperature sensors 317 of the electrode units M5, M8, M11, and M14 are all connected in parallel to the second signal trace 3133-2. The second signal trace 3133-2 is four branches that branch upward from the end of the wiring portion 312 and extend to the left and right sides respectively. The specific routing of the four branches is as follows: after branching upward from the end of the wiring portion 312 and extending to the right side ( Fig. 9 A branch extending upwards through the corresponding connecting portion 311 and connected to the signal pad 3143 corresponding to the signal terminal 3172 of the temperature sensor 317 of the electrode unit M8; after branching upwards from the end of the connecting portion 312 and extending to the right side ( Fig. 9 Another branch extending downwards through the corresponding connecting portion 311 and connected to the signal pad 3143 corresponding to the signal terminal 3172 of the temperature sensor 317 of the electrode unit M14; after branching upwards from the end of the connecting portion 312 and extending to the left side ( Fig. 9 A branch extending upwards through the electrode units M7, M6 and the corresponding connecting portion 311 reaches the electrode unit M5 and is connected to the signal pad 3143 corresponding to the signal end 3172 of the temperature sensor 317 of the electrode unit M5; after branching upwards from the end of the connecting portion 312 to the left side ( Fig. 9 Another branch extending to the right side in the figure passes downward through the electrode units M13, M12 and the corresponding connecting portion 311 to reach the electrode unit M11 and is connected to the signal pad 3143 corresponding to the signal end 3172 of the temperature sensor 317 of the electrode unit M11.

[0042] The signal ends 3172 of the temperature sensors 317 of the electrode units M1, M10, M16, and M17 are all connected in parallel to the third signal trace 3133-3. The third signal trace 3133-3 is four branches that branch upward from the end of the wiring portion 312 and extend to the left and right sides respectively. The specific routing of the four branches is as follows: after branching upward from the end of the wiring portion 312 and extending to the left side ( Fig. 9 A branch extending upwards through the electrode units M7, M2 and the corresponding connecting portion 311 reaches the electrode unit M1 and is connected to the signal pad 3143 corresponding to the signal end 3172 of the temperature sensor 317 of the electrode unit M1; after branching upwards from the end of the connecting portion 312 to the left side ( Fig. 9 Another branch extending downward through electrode units M13, M18 and corresponding connecting portion 311 reaches electrode unit M17 and is connected to signal pad 3143 corresponding to signal end 3172 of temperature sensor 317 of electrode unit M17; after branching upward from the end of connecting portion 312 to the right side ( Fig. 9A branch extending upwards through the electrode units M8, M9 and the corresponding connecting portion 311 reaches the electrode unit M10 and is connected to the signal pad 3143 corresponding to the signal end 3172 of the temperature sensor 317 of the electrode unit M10; after branching upwards from the end of the connecting portion 312 to the right side ( Fig. 9 Another branch extending to the left in the figure passes downward through the electrode units M14 and M15 and the corresponding connecting portion 311 to reach the electrode unit M16 and is connected to the signal pad 3143 corresponding to the signal end 3172 of the temperature sensor 317 of the electrode unit M16.

[0043] The signal ends 3172 of the temperature sensors 317 of the electrode units M2, M4, M18, and M20 are all connected in parallel to the fourth signal trace 3133-4. The fourth signal trace 3133-4 is four branches that branch upward from the end of the wiring portion 312 and extend to the left and right sides respectively. The specific routing of the four branches is as follows: after branching upward from the end of the wiring portion 312 and extending to the left side ( Fig. 9 A branch extending upwards through the electrode unit M7 and the corresponding connecting portion 311 reaches the electrode unit M2 and is connected to the signal pad 3143 corresponding to the signal end 3172 of the temperature sensor 317 of the electrode unit M2; after branching upwards from the end of the connecting portion 312 to the left side ( Fig. 9 Another branch extending downward through the electrode unit M13 and the corresponding connecting portion 311 reaches the electrode unit M18 and is connected to the signal pad 3143 corresponding to the signal end 3172 of the temperature sensor 317 of the electrode unit M18; after branching upward from the end of the connecting portion 312 to the right side ( Fig. 9 A branch extending upwards through the electrode units M8, M3 and the corresponding connecting portion 311 reaches the electrode unit M4 and is connected to the signal pad 3143 corresponding to the signal end 3172 of the temperature sensor 317 of the electrode unit M4; after branching upwards from the end of the connecting portion 312 to the right side ( Fig. 9 Another branch extending to the left in the figure passes downward through the electrode units M14, M19 and the corresponding connecting portion 311 to reach the electrode unit M20 and is connected to the signal pad 3143 corresponding to the signal end 3172 of the temperature sensor 317 of the electrode unit M20.

[0044] The ends of the four signal traces 3133 on the connection part 312 are respectively connected to the four corresponding gold fingers 3121 arranged on the back of the connection part 312. It can be understood that although the ground traces 3132 and the signal traces 3133 are mostly arranged on the back of the flexible circuit board 313, they need to pass through the corresponding parts of the flexible circuit board 313 and be electrically connected to the corresponding ground pads 3142 or signal pads 3143 arranged on the front of the flexible circuit board 313. In addition, the four ground traces 3132 and the four signal traces 3133 are arranged in parallel on the back of the flexible circuit board 313 and do not interfere with each other. However, the ground traces 3132 and the signal traces 3133 will inevitably cross at some places on the flexible circuit board 313 due to wiring requirements. In order to avoid interference, the ground traces 3132 or signal traces 3133 located at the intersection will pass through the corresponding parts of the flexible circuit board 313 to the front of the flexible circuit board 313 for jumpering, and then pass back to the back of the flexible circuit board 313 for continued routing. Therefore, there will also be shorter traces of the ground traces 3132 and the signal traces 3133 on the front of the flexible circuit board 313, and the ground traces 3132 and the signal traces 3133 located on the front of the flexible circuit board 313 and the AC traces 3131 will not interfere with each other.

[0045] Combine the following Fig.10As shown, the temperature measurement and control method of the electrode sheet 30 of the present application is described in detail. The wire (not shown) of the electrode sheet 30 is plugged into the connector 40 of the adapter 20 to realize the circuit connection between the electrode sheet 30 and the adapter 20. In terms of circuit arrangement, the twenty electrode units 310 are arranged at intervals in the form of a two-dimensional array, arranged in four rows and five columns. Specifically, the five electrode units 310 in the first row are electrode units M19, M14, M16, M20, and M15 in sequence; the five electrode units 310 in the second row are electrode units M3, M8, M10, M4, and M9 in sequence; the five electrode units 310 in the third row are electrode units M7, M5, M1, M2, and M6 in sequence; and the five electrode units 310 in the fourth row are electrode units M13, M11, M17, M18, and M12 in sequence. Among them, each electrode unit 310 located in the first four columns is a first electrode unit 310A, and the grounding end 3171 of the temperature sensor 317 of each first electrode unit 310A in the same row is short-circuited in parallel to the same grounding trace 3132, and the signal end 3172 of the temperature sensor 317 corresponding to each first electrode unit 310A in the same column is connected in parallel to the same signal trace 3133 and then connected to the same detection channel, and each electrode unit 310 located in the fifth column is a second electrode unit 310B, and each second electrode unit 310B is not provided with a temperature sensor 317, and is not connected to any grounding trace 3132 or signal trace 3133, that is, each temperature sensor 317 is arranged in four rows and four columns in the same circuit connection as the first electrode unit 310A. When measuring temperature, the four signal traces 3133 are all kept turned on, and then the ground trace 3132 is turned on in turn, so that the temperature detection signal of each temperature sensor 317 in each row can be obtained in turn in time sharing.

[0046] The adapter 20 includes: a controller 21, multiple groups of analog-to-digital conversion modules 22 connected to the controller 21, multiple groups of pressure resistors 24 and multiple groups of grounding switches 25 corresponding one-to-one to the multiple groups of analog-to-digital conversion modules 22, a communication unit 23, and a power module 26 connected to the communication unit 23, the controller 21 and the multiple groups of analog-to-digital conversion modules 22. The power module 26 provides a DC power supply VCC for each electronic component of the adapter 20.

[0047] The adapter 20 also includes multiple circuit lines (unnumbered). The multiple circuit lines (unnumbered) are electrically connected to multiple ground traces 3132, multiple signal traces 3133, and AC traces 3131 in the flexible circuit board 313 of the electrode sheet 30 through the wires of the corresponding electrode sheet 30. The multiple circuit lines (unnumbered) include multiple AC lines 27 that transmit alternating current signals to the corresponding electrode sheet 30 and are electrically connected to the AC traces 3131 in the flexible circuit board 313 of the corresponding electrode sheet 30, multiple circuit lines (unnumbered) that are electrically connected to the multiple signal traces 3133 in the flexible circuit board 313 of the corresponding electrode sheet 30 and are used to supply power to each temperature sensor 317 of the electrode sheet 30 or transmit the temperature detection signal of the electrode sheet 30, and multiple circuit lines (unnumbered) that are electrically connected to the multiple ground traces 3132 in the flexible circuit board 313 of the corresponding electrode sheet 30. The number of circuit lines P of the adapter 20 electrically connected to an electrode sheet 30 is equal to the sum of the number of row groups M and the number of column groups N of the electrode units 310 of the electrode sheet 30 in the circuit connection plus 1; the number of circuits H of the adapter 20 electrically connected to X electrode sheets 30 is equal to X times the number of circuit lines electrically connected to a single electrode sheet 30, that is, H=XP=X*(M+N+1). The number of groups of grounding switches 25 is related to the number of electrode sheets 30. The number of groups of grounding switches 25 is not less than the number of electrode sheets 30. Preferably, the number of groups of grounding switches 25 is the same as the number of electrode sheets 30. The following is a detailed description taking the electrical connection between one electrode sheet 30 and the adapter 20 as an example.

[0048] Each set of grounding switches 25 is provided with a plurality of grounding switches 25, which are respectively connected to the adapter 20 and are respectively electrically connected to the circuit lines (not numbered) corresponding to the multi-path grounding traces 3132 of the corresponding electrode sheet 30, and are configured to control the conduction or disconnection of the multi-path grounding traces 3132. The circuit lines (not numbered) electrically connected to the multi-path grounding traces 3132 of the electrode sheet 30 are grounded at one end close to the grounding switch 25. The number of grounding switches 25 in each set of grounding switches 25 is related to the number of grounding traces 3132 of the flexible circuit board 313 of the corresponding electrode sheet 30, and the two are equal in this embodiment. Each set of grounding switches 25 is provided with a plurality of grounding switches 25, and in this embodiment, there are 4 grounding switches, namely the first grounding switch 25-1, the second grounding switch 25-2, the third grounding switch 25-3 and the fourth grounding switch 25-4. Each group of multiple grounding switches 25 controls the closing or opening of the corresponding grounding trace 3132 of a corresponding electrode sheet 30 one by one.

[0049] Specifically, in terms of the circuit connection of the electrode unit 310, the ground ends 3171 of the temperature sensors 317 of the four electrode units M19, M14, M16, and M20 located in the first row are short-circuited in parallel to the first ground trace 3132-1, the ground ends 3171 of the temperature sensors 317 of the four electrode units M3, M8, M10, and M4 located in the second row are short-circuited in parallel to the second ground trace 3132-2, the ground ends 3171 of the temperature sensors 317 of the four electrode units M7, M5, M1, and M2 located in the third row are short-circuited in parallel to the third ground trace 3132-3, and the ground ends 3171 of the temperature sensors 317 of the four electrode units M13, M11, M17, and M18 located in the fourth row are short-circuited in parallel to the fourth ground trace 3132-4. The first grounding switch 25-1 is used to control the closing or disconnection of the first grounding trace 3132-1 of the corresponding electrode sheet 30, thereby controlling the power on and off of each temperature sensor 317 of the four electrode units M19, M14, M16, and M20 in the first row of the electrode sheet 30; the second grounding switch 25-2 is used to control the closing or disconnection of the second grounding trace 3132-2 of the electrode sheet 30, thereby controlling the power on and off of each temperature sensor 317 of the four electrode units M3, M8, M10, and M4 in the second row of the electrode sheet 30. The third grounding switch 25-3 is used to control the closing or disconnection of the third grounding trace 3132-3 of the electrode sheet 30, thereby controlling the power on and off of each temperature sensor 317 of the four electrode units M7, M5, M1, and M2 in the third row of the electrode sheet 30; the fourth grounding switch 25-4 is used to control the closing or disconnection of the fourth grounding trace 3132-4 of the electrode sheet 30, thereby controlling the power on and off of each temperature sensor 317 of the four electrode units M13, M11, M17, and M18 in the fourth row of the electrode sheet 30. The above-mentioned 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 controller 21 of the adapter 20.

[0050] In this embodiment, the multiple groups of grounding switches 25 are all electronic switches. The controller 21 is connected to the multiple groups of grounding switches 25 for sequentially and cyclically controlling the opening and closing states of multiple grounding switches 25 in each group of grounding switches 25, and then sequentially and individually conducting each grounding trace 3132 in the multiple grounding traces 3132 of the corresponding electrode sheet 30, so as to sequentially and time-dividedly collect the temperature detection signals of the patient's body surface detected by all temperature sensors 317 on the electrode sheet 30 during the period when the corresponding electrode sheet 30 stops applying the alternating current signal. The number of each group of grounding switches 25 is greater than or equal to the number of grounding traces 3132 of the flexible circuit board 313 of the corresponding electrode sheet 30. In this embodiment, the number of each group of grounding switches 25 is the same as the number of grounding traces 3132 of the corresponding electrode sheet 30.

[0051] In the present embodiment, each group of analog-to-digital conversion modules 22 is electrically connected one by one to each signal trace 3133 of the flexible circuit board 313 in the corresponding electrode sheet 30 through the multi-channel circuit lines (unnumbered) in the adapter 20, and is configured to receive the temperature detection signal transmitted from the multi-channel signal trace 3133 of the corresponding electrode sheet 30, and convert the temperature detection signal from an analog signal to a digital signal. Each group of analog-to-digital conversion modules 22 includes a plurality of detection channels A, B, C, and D, and each detection channel A, B, C, and D is used to connect a corresponding signal trace 3133 in the multi-channel signal trace 3133. The number of detection channels in each group of analog-to-digital conversion modules 22 is related to the number of column groups of the electrode units 310 of the corresponding electrode sheet 30 in the circuit connection. Specifically, the number of detection channels in each group of analog-to-digital conversion modules 22 is not less than the number of column groups of the electrode units 310 of the corresponding electrode sheet 30 in the circuit connection. Fig. 9 As shown, each group of analog-to-digital conversion modules 22 includes a total of 4 detection channels A, B, C, and D, which are respectively the first detection channel A, the second detection channel B, the third detection channel C, and the fourth detection channel D. The signal ends 3172 of the temperature sensors 317 of the four electrode units M19, M3, M7, and M13 in the first column are connected in parallel to the first signal trace 3133-1, the signal ends 3172 of the temperature sensors 317 of the four electrode units M14, M8, M5, and M11 in the second column are connected in parallel to the second signal trace 3133-2, the signal ends 3172 of the temperature sensors 317 of the four electrode units M16, M10, M1, and M17 in the third column are connected in parallel to the third signal trace 3133-3, and the signal ends 3172 of the temperature sensors 317 of the four electrode units M20, M4, M2, and M18 in the fourth column are connected in parallel to the fourth signal trace 3133-4. The first detection channel A is connected to the first signal trace 3133-1, the second detection channel B is connected to the second signal trace 3133-2, the third detection channel C is connected to the third signal trace 3133-3, and the fourth detection channel D is connected to the fourth signal trace 3133-4. Each detection channel A, B, C, D is used to receive the temperature detection signal collected by the temperature sensor 317 of the electrode unit 310 connected to the corresponding signal trace 3133. In addition, each detection channel A, B, C, D is connected to a power module 26 for providing a detection voltage to the detection channel A, B, C, D via a corresponding voltage divider resistor 24 in the adapter 20, and the power module 26 provides a DC signal.

[0052] In this embodiment, the communication unit 23 is configured to obtain the digital signals output by the multiple analog-to-digital conversion modules 22 and send the digital signals to the electric field generator 10. The electric field generator 10 is also configured to control and adjust the voltage, current or power of the AC signal provided to the multiple electrode units 310 of the electrode sheet 30 according to the received digital signals. Exemplarily, when any of the multiple digital signals received exceeds the preset threshold value stored in the controller 21, it means that the temperature of the human body surface to which the corresponding dielectric element 315 is attached detected by at least one temperature sensor 317 in the electrode sheet 30 exceeds the preset threshold temperature (for example, 41°C, 42°C, etc.), and at this time, the voltage, current or power of the AC signal output by the electric field generator 10 can be appropriately reduced to avoid the electrode unit 310 of the electrode sheet 30 from being too high in temperature when the AC signal is applied, causing low-temperature burns to the patient's skin. The above-mentioned preset threshold temperature and preset threshold value can be determined according to the human safety threshold value. The communication unit 23 is controlled by the controller 21 and transmits the digital signals converted by the multiple analog-to-digital conversion modules 22 in series. In this embodiment, the preset temperature threshold may be a value within the range of 36°C-45°C.

[0053] When it is necessary to apply an AC signal to each electrode unit 310 of the corresponding electrode sheet 30, the corresponding four grounding switches 25 are all disconnected, and the electric field generator 10 outputs the AC signal to the corresponding AC line 27 in the adapter 20, and applies it to the dielectric element 315 of each electrode unit 310 through the AC trace 3131 connected to the AC line 27.

[0054] When it is necessary to collect the temperature detection signal of each temperature sensor 317 in the corresponding electrode sheet 30, the electrical connection between the AC trace 3131 of the electrode sheet 30 and the AC line 27 of the adapter 20 is in a disconnected state, and the four signal traces 3133 are always turned on. The first grounding switch 25-1 is closed first, and the other grounding switches 25-2 to 25-4 are opened. The four detection channels A, B, C and D of the analog-to-digital conversion module 22 can obtain the temperature detection signal at the same time. Fig.10 Then the second grounding switch 25-2 is closed, and the other grounding switches 25-1, 25-3 and 25-4 are opened, and the four detection channels A, B, C and D of the analog-to-digital conversion module 22 can simultaneously obtain the temperature detection signals of the four electrode units M19, M14, M16 and M20 in the first row shown in FIG. Fig.10 The temperature detection signals of the four electrode units M3, M8, M10, and M4 in the second row shown in FIG. 2 are obtained by closing the third grounding switch 25-3 and disconnecting the other grounding switches 25-1, 25-2, and 25-4. The four detection channels A, B, C, and D of the analog-to-digital conversion module 22 can simultaneously obtain Fig.10Finally, the fourth grounding switch 25-4 is closed, and the other grounding switches 25-1, 25-2 and 25-3 are opened, and the four detection channels A, B, C and D of the analog-to-digital conversion module 22 can simultaneously obtain the temperature detection signals of the four electrode units M7, M5, M1 and M2 in the third row shown in FIG. Fig.10 The temperature detection signals of the four electrode units M13, M11, M17, and M18 in the fourth row are shown in FIG. In this way, the temperature detection signals of all temperature sensors 317 can be collected. The transmission of the AC signal to the electrode unit 310 and the transmission of the DC signal by the electrode unit 310 for collecting the temperature detection signal are staggered.

[0055] The communication unit 23 is controlled by the controller 21 and transmits the digital signal converted by the analog-to-digital conversion module 22 in series, and sends the digital signal to the electric field generator 10. When any of the multiple digital signals received by the electric field generator 10 exceeds a preset threshold, the voltage, current or power of the AC signal output by the electric field generator 10 can be appropriately reduced to prevent a certain electrode unit 310 from being overheated and causing low-temperature burns to the patient's skin.

[0056] The above is only a preferred implementation mode of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A tumor electric field treatment system, comprising an electric field generator and a plurality of pairs of electrodes electrically connected to the electric field generator, wherein the electrode sheets comprise an electrode array, characterized in that: The electrode array includes two parallel main trunks and a plurality of free branches extending outward from the two main trunks respectively, and a plurality of electrode units and connecting parts connecting two adjacent electrode units are provided on the main trunks and the branches; the plurality of electrode units include a plurality of first electrode units with temperature sensors, and the electrode array is also provided with an AC trace for transmitting alternating current signals to each electrode unit, a plurality of ground traces for short-circuiting the ground ends of the temperature sensors of the corresponding first electrode units to ground, and a plurality of signal traces for connecting the signal ends of the temperature sensors of the corresponding first electrode units in parallel and cooperating with the ground traces to transmit the temperature detection signals of the corresponding first electrode units in time-sharing.

2. The tumor electric field treatment system according to claim 1, characterized in that: The tumor electric field therapy system also includes an AC line, a plurality of grounding switches and a plurality of detection channels, the AC line is connected to the AC trace, the grounding trace is connected to the grounding switch in a one-to-one correspondence, and the signal trace is connected to the detection channel in a one-to-one correspondence; the detection channels are all turned on when collecting the temperature detection signal of the first electrode unit, and the grounding switches are closed in sequence when collecting the temperature detection signal of the first electrode unit.

3. The tumor electric field treatment system according to claim 1, characterized in that: The connection portion includes a first connection portion connecting two adjacent electrode units located in the same branch and a second connection portion connecting two adjacent electrode units located in the same trunk, and the electrode unit located at the outermost end of the branch is only connected to one of the first connection portions.

4. The tumor electric field treatment system according to claim 1, characterized in that: A diode is connected in series between the ground terminal of the temperature sensor and the corresponding ground trace.

5. The tumor electric field treatment system according to claim 1, characterized in that: The plurality of electrode units further include at least one second electrode unit which is not provided with a temperature sensor.

6. The tumor electric field treatment system according to claim 5, characterized in that: There are twenty electrode units, including sixteen first electrode units and four second electrode units; the sixteen first electrode units are arranged in four rows and four columns in circuit connection, and there are four ground traces, each of which is respectively connected to the ground end of the temperature sensors of the four first electrode units corresponding to each other and located in the same row; there are four signal traces, each of which is respectively connected to the signal end of the temperature sensors of the four first electrode units corresponding to each other and located in the same row.

7. The tumor electric field treatment system according to claim 6, characterized in that: The twenty electrode units are distributed in four rows and six columns in the spatial structure. The first row and the fourth row are each provided with four electrode units located on the second to fifth columns respectively, and the second row and the third row are each provided with six electrode units located on the first to sixth columns respectively.

8. The tumor electric field treatment system according to claim 7, characterized in that: The electrode units located in the first and fourth rows, and the electrode units located in the second and third rows and respectively located in the first, third, fourth and sixth columns are all the first electrode units; the electrode units located in the second and third rows and located in the second and fifth columns are all the second electrode units.

9. The tumor electric field treatment system according to claim 8, characterized in that: The ground ends of the temperature sensors of the two first electrode units in the first row and the two first electrode units in the second row are connected to the same ground trace; the ground ends of the temperature sensors of the remaining two first electrode units in the first row and the remaining two first electrode units in the second row are connected to the same ground trace; the ground ends of the temperature sensors of the two first electrode units in the third row and the two first electrode units in the fourth row are connected to the same ground trace; the ground ends of the temperature sensors of the remaining two first electrode units in the third row and the remaining two first electrode units in the fourth row are connected to the same ground trace.

10. The tumor electric field treatment system according to claim 8, characterized in that: The signal ends of the temperature sensors of the two first electrode units in the first row and the two first electrode units in the fourth row are all connected to the same signal trace; the signal ends of the temperature sensors of the two first electrode units in the second row and the two first electrode units in the third row are all connected to the same signal trace; the signal ends of the temperature sensors of another first electrode unit in the first row, another first electrode unit in the second row, another first electrode unit in the third row and another first electrode unit in the fourth row are all connected to the same signal trace; the signal ends of the temperature sensors of the remaining first electrode unit in the first row, the remaining first electrode unit in the second row, the remaining first electrode unit in the third row and the remaining first electrode unit in the fourth row are all connected to the same signal trace.

11. The tumor electric field treatment system according to claim 6, characterized in that: The electrode array is provided with a flexible circuit board, the four ground traces and the four signal traces are mainly arranged on the back side of the flexible circuit board, and one AC trace is arranged on the front side of the flexible circuit board.

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