Tumor electric field treatment system and electrode sheet thereof

Abstract

The present application provides a tumor electric field therapy system and an electrode sheet thereof, the electrode sheet includes a backing and an electrode array, the electrode array includes a plurality of electrode unit groups, the electrode unit group includes two adjacent electrode units and a connecting portion connecting the two adjacent electrode units, the electrode unit is provided with a main body and a conductive sheet located on the main body, the connecting portion is provided with a connecting strip and an AC line arranged on the connecting strip, the AC line is connected and conducted with the conductive sheets located at both ends of the connecting portion; the electrode array is laid with a dielectric layer corresponding to each electrode unit group, the dielectric layer is in contact with and conducted with the two conductive sheets and the AC line in the corresponding electrode unit group. When the electrode sheet of the present application is tested for electrical performance, each electrode unit group is used as a unit for testing, which can improve the testing efficiency.

Description

Technical Field

[0001] The present application relates to a tumor electric field treatment system and an electrode sheet thereof. Background Art

[0002] Medium frequency alternating electric field therapy has been proven to be an effective method for tumor treatment. It can interfere with the mitosis process of cancer cells, induce apoptosis of cancer cells, and can be used to treat tumors. The tumor electric field therapy system usually includes an electric field generator, an adapter, and multiple pairs of electrodes. The electric field generator generates an alternating electric signal and transmits the alternating electric signal to the electrode through the adapter. The electrode sheets are applied in pairs on the surfaces of opposite sides of the patient's skin, and an alternating current signal is applied between each pair of electrode sheets to non-invasively apply the tumor treatment electric field to the target area.

[0003] Chinese invention patent application publication No. 114099958 discloses an electrode sheet, which includes an electrode array having twenty electrode units arranged at intervals. When the electrode sheet is subjected to electrical performance testing, it is necessary to test performance parameters such as resistance and capacitance of each electrode unit. Since the electrode sheet has a large number of electrode units, the amount of test data is large and the test efficiency is low.

[0004] Therefore, there is a need to improve the existing tumor electric field therapy system and its electrode sheets. Utility Model Content

[0005] The present application provides a tumor electric field therapy system and an electrode sheet thereof, which can improve the detection efficiency of electrical performance detection.

[0006] Specifically, the present application is implemented through the following technical solutions: an electrode sheet, including a backing and an electrode array attached to the backing, the electrode array including a plurality of electrode unit groups, the electrode unit group including two adjacent electrode units and a connecting portion connecting the two adjacent electrode units, the electrode unit is provided with a main body and a conductive sheet located on the main body, the connecting portions are provided with connecting strips and AC lines arranged on the connecting strips, the AC lines are connected and conducted with the conductive sheets located at both ends of the connecting portions; the electrode array is provided with a dielectric layer corresponding to each of the electrode unit groups, the dielectric layer is in contact with and conducted with the two conductive sheets and the AC line in the corresponding electrode unit group.

[0007] Furthermore, the electrode array is provided with an insulating layer, the dielectric layer is arranged on a corresponding portion of the insulating layer, and the conductive sheet is exposed from the insulating layer and is in direct contact with the dielectric layer.

[0008] Furthermore, the AC line in each of the electrode unit groups is exposed from the insulating layer and is in direct contact with the dielectric layer.

[0009] Furthermore, the dielectric layer is disposed in a disconnected state at the position of the connection portion between each of the electrode unit groups to form a gap.

[0010] Furthermore, the electrode array further includes an alloy layer, and the alloy layer is arranged corresponding to the dielectric layer and covers the dielectric layer.

[0011] Furthermore, the electrode unit group is divided into a peripheral electrode unit group located at the periphery of the electrode array and a central electrode unit group surrounded by the peripheral electrode unit group, the electrode units are divided into first electrode units and second electrode units, each of the peripheral electrode unit groups includes a first electrode unit, a second electrode unit adjacent to the first electrode unit, and the connecting portion connecting the adjacent first electrode unit and the second electrode unit; each of the central electrode unit groups includes two adjacently arranged second electrode units and the connecting portion connecting the adjacent two second electrode units, and the electrode array is provided with a plurality of temperature sensors, and the temperature sensors are respectively arranged on a corresponding one of the first electrode units in the peripheral electrode unit group.

[0012] Furthermore, the conductive sheet is provided with a through opening, the main body of the first electrode unit is provided with a ground pad and a signal pad in the through hole, and the temperature sensor is provided with a ground terminal electrically connected to the ground pad and a signal terminal electrically connected to the signal pad.

[0013] Furthermore, the electrode array is provided with a substrate and a plurality of conductive traces arranged on the front side of the substrate, the conductive traces include a grounding wire electrically connected to the ground pad, a temperature measuring wire electrically connected to the corresponding signal pad, and the AC wire, the grounding wire and the AC wire electrically connecting all the conductive sheets are located on the front side of the substrate, and the temperature measuring wire is located on the back side of the substrate.

[0014] Furthermore, the electrode array also includes a covering film, and the covering film presses and fixes all the temperature measuring wires to the back side of the substrate.

[0015] The present application also provides the following technical solution: a tumor electric field treatment system, which includes an electric field generator and the aforementioned electrode sheet.

[0016] The electrode sheet of the present application forms an electrode unit group by connecting every two adjacent electrode units through a dielectric layer. When the electrode sheet is tested for electrical properties, each electrode unit group is used as a unit for testing, which can improve the testing efficiency.

[0017] 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

[0018] Figure 1 is a framework diagram of a tumor electric field treatment system according to one embodiment of the present application;

[0019] Figure 2 is a schematic plan view of a first embodiment of an electrode sheet according to an embodiment of the present application;

[0020] Figure 3 for Figure 2 A schematic plan view of an electrode array of the electrode sheet shown, wherein dotted lines are added to indicate each electrode unit group;

[0021] Figure 4 for Figure 3 Another schematic plan view of the electrode array shown, wherein the dielectric layer and the alloy layer are not provided;

[0022] Figure 5 for Figure 4 A local enlarged view of point A in FIG.

[0023] Figure 6 For along Figure 3 The cross-section obtained by sectioning in the CC direction;

[0024] Figure 7 For along Figure 3 The cross-section obtained by sectioning in the middle DD direction;

[0025] Figure 8 is a plan view schematically showing a second embodiment of an electrode array according to the present application;

[0026] Fig. 9 for Figure 8 Another schematic plan view of an electrode array is shown, in which the dielectric layer and the alloy layer are removed.

[0027] Description of reference numerals:

[0028] Tumor electric field treatment system 100, electric field generator 10, adapter 20, electrode sheet 30, backing 31, electrode array 32, 32', temperature sensor 321, 321', ground terminal 3211, signal terminal 3212, lead 3213, connection part 322, 322', longitudinal connection part 3221, 3221', latitudinal connection part 3222, 3222', first latitudinal connection part 3222A, 3222A', second latitudinal connection part 3222B, 3222B', connection part 323, 323', gold finger 3231, 3231', substrate 325, 325', main body 3250, 3250', connecting strips 3251, 3251', AC lines 3254, 3254', adhesive 33, electrode units 320, 320', C1-C20, C1'-C20', first electrode units 320A, 320A', second electrode units 320B, 320B', conductive sheets 342, 342', openings 3421, sealant 343, ground pads 344, signal pads 345, insulating layers 346, 346', first insulating layers 3461, second insulating layers 3462, insulating tape 3463, dielectric layers 347, alloy layers 348, 348', covering films 349, and interval D. DETAILED DESCRIPTION

[0029] 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.

[0030] First embodiment:

[0031] 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, wherein 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 required for tumor treatment, 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 electrode sheet 30 is attached to the body surface of the patient corresponding to the tumor area, and applies the alternating current signal to the patient's tumor area for tumor electric field treatment.

[0032] refer to Figure 2 and Figure 3As shown, the electrode sheet 30 includes a backing 31, an electrode array 32 attached to the front of the backing 31, and a plurality of adhesives 33 attached to the front of the electrode array 32, wherein the front of the backing 31, the electrode array 32, and the adhesives 33 are all the sides facing the patient's skin. The electrode array 32 is provided with twenty electrode units 320 arranged at intervals for applying an alternating current signal to the patient's tumor area. The adhesives 33 are arranged in a sheet shape, covering each electrode unit 320. The adhesives 33 are conductive hydrogels, which are directly attached to the corresponding body surface of the patient's tumor when in use, which can enhance the comfort of the electrode unit 320 and the patient's body surface, and can also serve as a conductive medium for the alternating current signal passing through the electrode unit 320 to pass through and be applied to the patient's tumor site.

[0033] The electrode array 32 also includes a plurality of temperature sensors 321, a connection portion 322 connecting two adjacent electrode units 320, and a wiring portion 323 extending outward from one of the connection portions 322. The temperature sensor 321 can feedback the temperature of the corresponding electrode unit 320 at the surface of the body to prevent the heat generated by the electrode unit 320 from causing burns to the patient's skin when an alternating current signal is applied. The wiring portion 323 electrically connects the electrode sheet 30 to the adapter 20 through a wire (not shown) to receive the alternating current signal from the electric field generator 10 and transmit the detection signal of each temperature sensor 321 to the electric field generator 10. A plurality of gold fingers 3231 are provided on both the front and back surfaces of the wiring portion 323, which can be welded and connected to a wire (not shown).

[0034] From the spatial arrangement of the electrode array 32, Figure 3 to Figure 4 As shown, the twenty electrode units 320 are arranged in an array of four rows and six columns. Four electrode units 320 are arranged in each of the first and fourth rows, and six electrode units 320 are arranged in each of the second and third rows. The six electrode units 320 in each row of the second and third rows correspond to each other and are arranged in six columns. The four electrode units 320 in each row of the first and fourth rows are located in the middle four columns. The several connecting parts 322 of the electrode array 32 include a longitudinal connecting part 3221 extending in the longitudinal direction (i.e., upward in the column) and a latitudinal connecting part 3222 extending in the latitudinal direction (i.e., similar to upward in the row). Any two adjacent electrode units 320 on the third column are connected by a longitudinal connecting part 3221, and any two adjacent electrode units 320 on the fourth column are also connected by a longitudinal connecting part 3221. The adjacent two electrode units 320 on other columns are arranged in a disconnected state without a connecting part 322. Any two adjacent electrode units 320 in each row are connected via a latitudinal connecting portion 3222 , and the connecting portion 323 extends outward from a latitudinal connecting portion 3222 located in the middle of the fourth row.

[0035] For the convenience of the following description, each electrode unit 320 may be numbered separately. From left to right, the four electrode units 320 in the first row are defined as C1, C2, C3, and C4, the six electrode units 320 in the second row are defined as C5, C6, C7, C8, C9, and C10, the six electrode units 320 in the third row are defined as C11, C12, C13, C14, C15, and C16, and the four electrode units 320 in the fourth row are defined as C17, C18, C19, and C20. Figure 4 As shown, the electrode units 320 adjacent to each other in each row form an electrode unit group, and the twenty electrode units 320 form a total of 10 electrode unit groups, which are: a first electrode unit group formed by the two electrode units C1 and C2 of the first row and the latitudinal connecting portion 3222 therebetween, a second electrode unit group formed by the two electrode units C3 and C4 of the first row and the latitudinal connecting portion 3222 therebetween, a third electrode unit group formed by the two electrode units C5 and C6 of the second row and the latitudinal connecting portion 3222 therebetween, a fourth electrode unit group formed by the two electrode units C7 and C8 of the second row and the latitudinal connecting portion 3222 therebetween, and a fourth electrode unit group formed by the two electrode units C9 and C10 of the second row and the latitudinal connecting portion 3222 therebetween. The fifth electrode unit group is formed by the latitudinal connecting portion 3222 between the two electrode units C11 and C12 in the third row, the sixth electrode unit group is formed by the two electrode units C13 and C14 in the third row and the latitudinal connecting portion 3222 therebetween, the seventh electrode unit group is formed by the two electrode units C15 and C16 in the third row and the latitudinal connecting portion 3222 therebetween, the eighth electrode unit group is formed by the two electrode units C17 and C18 in the fourth row and the latitudinal connecting portion 3222 therebetween, the ninth electrode unit group is formed by the two electrode units C17 and C18 in the fourth row and the latitudinal connecting portion 3222 therebetween, and the tenth electrode unit group is formed by the two electrode units C19 and C20 in the fourth row and the latitudinal connecting portion 3222 therebetween. The latitudinal connecting portion 3222 in each electrode unit group is defined as the first latitudinal connecting portion 3222A, and the other latitudinal connecting portions 3222 are defined as the second latitudinal connecting portions 3222B. There are ten adhesive members 33 in total, which are respectively bonded to each electrode unit group.

[0036] Among the ten electrode unit groups of the electrode sheet 30, the fourth electrode unit group (C7, C8) and the seventh electrode unit group (C13, C14) are located at the center of the electrode array 32, and are defined as the central electrode unit group; the other eight electrode unit groups are arranged around the periphery of the central electrode unit group, and are defined as the peripheral electrode unit groups. The two electrode units 320 in a single electrode unit group have the same performance and the same heat generation, so the temperature is basically the same. The electrode sheet 30 is provided with a total of eight temperature sensors 321. In order to fully detect the temperature of each electrode unit 320 in the electrode sheet 30, each of the eight peripheral electrode unit groups is provided with the aforementioned temperature sensor 321, and each temperature sensor 321 is arranged on the electrode unit 320 at the center of the electrode array 32 of the electrode sheet 30 in the corresponding peripheral electrode unit group, so that the temperature sensor 321 is closer to the fourth electrode unit group (C7, C8) or the seventh electrode unit group (C13, C14). These eight temperature sensors 321 are respectively arranged on the electrode units C2, C3, C6, C9, C12, C15, C18, and C19, and can directly detect the temperature of each peripheral electrode unit group. The temperature of the fourth (C7, C8) and seventh electrode unit groups (C13, C14) can refer to the temperature of the respective adjacent electrode unit groups. That is, the temperature of the fourth electrode unit group (C7, C8) can refer to the temperature of the third electrode unit group or the fifth electrode unit group, and the temperature of the seventh electrode unit group (C13, C14) can refer to the temperature of the sixth electrode unit group or the eighth electrode unit group. With such a reasonable arrangement, only eight temperature sensors 321 are used to monitor the temperature of all twenty electrode units 320. In this embodiment, the electrode unit 320 provided with the temperature sensor 321 is defined as the first electrode unit 320A, and the electrode unit 320 not provided with the temperature sensor 321 is defined as the second electrode unit 320B. The electrode unit group includes two second electrode units 320B arranged adjacent to each other in the row upward; or includes a first electrode unit 320A and a second electrode unit 320B arranged adjacent to the first electrode unit 320A in the row upward. Each electrode unit group also includes a connecting portion 322 connecting two adjacent electrode units 320. Specifically, each peripheral electrode unit group includes a first electrode unit 320A, a second electrode unit 320B arranged adjacent to the first electrode unit 320A in the row upward, and a first latitudinal connecting portion 3222A connecting the first electrode unit 320A and the second electrode unit 320B; each central electrode unit group includes two second electrode units 320B arranged adjacent to each other in the row upward, and a first latitudinal connecting portion 3222A connecting the two second electrode units 320B.

[0037] From the hierarchical structure of the electrode array 32, refer to Figures 5 to 7As shown, the electrode array 32 includes a flexible substrate 325 in a sheet shape. The substrate 325 is used as a supporting base plate and is integrally arranged in each electrode unit 320, each connecting portion 322 and the wiring portion 323. For the convenience of description, the portion of the substrate 325 corresponding to each electrode unit 320 is defined as the main body 3250, and the portion of the substrate 325 corresponding to each connecting portion 322 and the wiring portion 323 is defined as the connecting bar 3251. Each main body 3250 and each connecting bar 3251 are different parts of the entire substrate 325. The thickness of the substrate 325 is 0.1mm-0.3mm, and its material is polyimide or polyester film, which has the characteristics of light weight, thin thickness, bendability, high flexibility, etc. The main body 3250 is arranged in a circular sheet shape, and the electrode unit 320 is provided with a conductive sheet 342 on the main body 3250. The conductive sheet 342 is arranged in a circular ring shape, and a through opening 3421 is provided at the center thereof. The thickness of the conductive sheet 342 is 10μm to 50μm. The conductive sheet 342 and the main body 3250 are arranged concentrically, and the outer contour of the conductive sheet 342 is smaller than the outer contour of the main body 3250.

[0038] The opening 3421 of the conductive sheet 342 exposes the front side of the corresponding main body 3250. The temperature sensor 321 is placed in the opening 3421 of the corresponding conductive sheet 342 and fixed to the main body 3250, and is integrally encapsulated in the opening 3421 of the conductive sheet 342 by the sealant 343. A ground terminal 3211 is provided on the bottom surface of the temperature sensor 321, and a signal terminal 3212 is provided on the top surface of the temperature sensor 321. The main body 3250 of some electrode units 320 is provided with ground pads 344 and signal pads 345 at intervals in the opening 3421 of the conductive sheet 342. The ground terminal 3211 is welded to the corresponding ground pad 344, and the signal terminal 3212 is electrically connected to the corresponding signal pad 345 through a lead 3213.

[0039] The electrode array 32 is provided with a plurality of conductive traces (not numbered) on the substrate 325. The conductive traces (not numbered) include a ground line (not shown) electrically connected to the ground pad 344 and used to transmit a ground signal, eight temperature measuring lines (not shown) electrically connected to each signal pad 345 one-to-one and used to transmit a direct current signal, and an AC line 3254 electrically connected to each conductive sheet 342 of each electrode unit 320 and used to transmit an alternating current signal. Among the plurality of gold fingers 3231 of the aforementioned connection portion 323, one of the gold fingers 3231 is connected to the ground line (not shown); one of the gold fingers 3231 is connected to the AC line 3254; one of the gold fingers 3231 is connected to the shielding layer (not shown) of the conductive wire (not shown) and is grounded; for electromagnetic shielding and to prevent signal interference; the remaining gold fingers 3231 are connected to the temperature measuring lines (not shown) one by one.

[0040] The grounding wire (not shown) is led out from a gold finger 3231 on the wiring portion 323 and is divided into multiple branches that extend to the center of the electrode units (C2, C3, C6, C9, C12, C15, C18, C19) of the temperature sensor 321 and are electrically connected to the corresponding grounding pad 344. The grounding wire (not shown) is mainly distributed on the front side of the substrate 325. The gold finger 3231 connected to the grounding wire (not shown) is electrically connected to the gold finger 3231 connected to the shielding wire layer (not shown) and both are located on the front side of the wiring portion 323. A number of temperature measuring lines (not shown) are independent of each other and are respectively led out from a corresponding gold finger 3231 on the wiring portion 323. Each temperature measuring line (not shown) extends from the wiring portion 323 to the center of a corresponding electrode unit (C2, C3, C6, C9, C12, C15, C18 or C19) among the eight electrode units 320 where the temperature sensor 321 is set, and is electrically connected to the corresponding signal pad 345 located on the front side of the substrate 325 after passing through a conductive via (not shown) penetrating the substrate 325. The temperature measuring lines (not shown) are all distributed on the back side of the substrate 325, and the multiple gold fingers 3231 connected to the temperature measuring lines (not shown) are respectively located on the front and back sides of the wiring portion 323. The AC line 3254 is led out from a gold finger 3231 on the connection part 323 and is electrically connected to two conductive sheets 342 of two adjacent electrode units 320 located at both ends of the connection part 322 after passing through each connection part 322, that is, the AC line 3254 is electrically connected to the conductive sheets 342 of each electrode unit 320 to transmit the alternating current signal to all the conductive sheets 342. The AC line 3254 is distributed on the front side of the substrate 325, and the gold finger 3231 connected to the AC line 3254 is located on the front side of the connection part 323.

[0041] refer to Figure 4 and Figure 5As shown, on the front side of the substrate 325, each main body 3250 is provided with a corresponding conductive sheet 342, and part of the main body 3250 is also provided with the aforementioned ground pad 344 and the aforementioned signal pad 345, an AC line 3254 is arranged on each connecting part 322, and a ground line (not shown) is arranged on part of the connecting part 322 and part of the main body 3250. The AC line 3254, the ground line (not shown), the conductive sheet 342, the ground pad 344 and the signal pad 345 are located on the same layer of the substrate 325 and together constitute a conductive layer (not numbered) located on the front side of the substrate 325. After the conductive layer (not numbered) is completed, the electrode array 32 is laid with an insulating layer 346 on the substrate 325 and the conductive layer (not numbered). The insulating layer 346 covers or partially covers the main body 3250, the connecting portion 322, the wiring portion 323 and the substrate 325 not covered by the conductive layer (not numbered) to form a solder resist layer on the substrate 325. The insulating layer 346 is arranged on the front of the substrate 325 by the COB process (Chip On Board, chip direct mounting technology), and the thickness of the insulating layer 346 is 10μm to 50μm. After the insulating layer 346 is laid, the temperature sensor 321 is welded to the corresponding ground pad 344 and the signal pad 345 to be fixed on the corresponding main body 3250, and sealed by the sealant 343. Figure 3 and Figure 6 The electrode array 32 further includes a dielectric layer 347 laid on the insulating layer 346, the sealant 343, and the conductive layer (not numbered) not covered by the insulating layer 346. The insulating layer 346 can also play a heat insulating role, reducing the heat transferred from the conductive layer (not numbered) to the dielectric layer 347 laid on the insulating layer 346.

[0042] The insulating layer 346 partially covers the main body 3250 and the first latitudinal connecting portion 3222A located in the electrode unit group. The insulating layer 346 located on the main body 3250 exposes the conductive sheet 342 at the bottom, so that the conductive sheet 342 is in contact with and conductive to the dielectric layer 347 further laid on the insulating layer 346. The insulating layer 346 on the first latitudinal connecting portion 3222A also partially covers the conductive layer (not shown) to expose the corresponding AC line 3254, so that the AC line 3254 is directly in contact with and conductive to the dielectric layer 347 laid thereon.

[0043] Back to Figure 3As shown, it shows the state of the electrode array 32 after laying the dielectric layer 347 and the alloy layer 348. The dielectric layer 347 can completely cover the conductive sheet 342 to prevent the conductive sheet 342 from directly contacting the human body to generate direct current conduction and affect the safety of the human body. The edge of the dielectric layer 347 does not exceed the outer contour of the substrate 325 so that the dielectric layer 347 can obtain full support from the substrate 325. The dielectric layer 347 is a polymer dielectric layer 347 with a high dielectric constant and low dielectric loss, which is made of a thin film material with non-fixed crystal orientation, high deflection and high toughness. In this embodiment, the material of the dielectric layer 347 is a polymer with a dielectric constant of not less than 20 and a dielectric strength of not less than 40V / μm to prevent the dielectric layer 347 from being broken down under normal applied voltage. The polymer is a polymer with relaxor ferroelectric behavior, which may be a vinyl fluoride-based polymer, P(VDF-TrFE-CTFE), P(VDF-TrFE-CFE) or P(VDF-TrFE-CFE-CTFE), or a polyamide composite material, such as piperazine-biuret copolymer polyamide. The dielectric layer 347 may be formed on the surface of the conductive sheet 342 and the insulating layer 346 by evaporation, sputtering or ion plating vapor deposition, or may be formed on the surface of the conductive sheet 342 and the insulating layer 346 by printing, spraying or casting. The thickness of the dielectric layer 347 is 3 μm-10 μm.

[0044] The dielectric layer 347 is laid on the corresponding insulating layer 346 corresponding to each electrode unit group, and the dielectric layer 347 between each electrode unit group forms a disconnection gap D on the front of the second latitudinal connecting portion 3222B. The dielectric layer 347 is arranged on the insulating layer 346 in a manner of covering the electrode unit group including two electrode units 320 and the first latitudinal connecting portion 3222A as a whole. Its shape is consistent with the outer contour of the electrode unit group, and it directly contacts and conducts with the conductive sheets 342 of the two electrode units 320 of the corresponding electrode unit group and the AC line 3254 on the first latitudinal connecting portion 3222A. That is, the dielectric layer 347 is not arranged on all the second latitudinal connecting portions 3222B and all the longitudinal connecting portions 3221 in the electrode array 32. The dielectric layer 347 simultaneously covers and conducts the conductive sheets 342 of the two electrode units 320 in the corresponding electrode unit group and the AC line 3254 therebetween, so that the two electrode units 320 simultaneously apply an alternating current signal. In this way, the twenty electrode units 320 can be grouped in pairs to form an electrode unit group, so that the performance parameters of each electrode unit group in the electrode unit group are the same, and the ten electrode unit groups transmit alternating current signals in parallel. When the electrode sheet 30 is tested for electrical performance, each electrode unit group can be used as a unit for testing to improve the testing efficiency.

[0045] refer to Figure 6As shown, an alloy layer 348 is further laid on the dielectric layer 347, and the alloy layer 348 only covers the dielectric layer 347. The adhesive member 33 is attached to the alloy layer 348. The alloy layer 348 is used as an auxiliary layer to increase the conductivity between the dielectric layer 347 and the adhesive member 33. The substrate 325 also includes a covering film 349 laid on the back of the substrate 325 as a whole. The eight temperature measuring wires (not shown) arranged on the back of the substrate 325 are all laid on the back of the substrate 325 by pressing the covering film 349. These temperature measuring wires (not shown) all penetrate the substrate 325 and are electrically connected one by one with the corresponding signal pads 345 arranged on the front of the main body 3250 of the substrate 325.

[0046] Figure 6 FIG. 3 is a cross-sectional view of an electrode unit 320 provided with a temperature sensor 321. The electrode unit 320 includes a main body 3250, a conductive sheet 342 provided on the main body 3250, a ground pad 344 and a signal pad 345 provided in an opening 3421 of the conductive sheet 342, an insulating layer 346, a temperature sensor 321, a dielectric layer 347, an alloy layer 348 and a covering film 349, wherein a ground wire (not shown) connected to the ground pad 344 and a temperature measuring wire (not shown) connected to the signal pad 345 are not shown due to the viewing angle. Figure 6 As mentioned above, the insulating layer 346 covers the front of the main body 3250 located in the opening 3421 of the conductive sheet 342, but avoids the ground pad 344 and the signal pad 345, so that the ground pad 344 and the signal pad 345 are welded and connected to the temperature sensor 321. The insulating layer 346 located between the ground pad 344 and the signal pad 345 can also prevent the ground pad 344 and the signal pad 345 from short-circuiting. The insulating layer 346 also exposes at least a portion of the conductive sheet 342 so that the conductive sheet 342 is in contact with the dielectric layer 347. The sealant 343 is set after the insulating layer 346 is laid.

[0047] Figure 7 Shown is a cross-sectional view of the first latitudinal connection portion 3222A between two electrode units C9 and C10, wherein the first latitudinal connection portion 3222A includes a connecting bar 3251, two AC lines 3254 located on the front side of the connecting bar 3251, an insulating layer 346 avoiding the AC lines 3254 and covering the connecting bar 3251, a dielectric layer 347 covering the insulating layer 346 and the AC lines 3254, an alloy layer 348 covering the dielectric layer 347, and a covering film 349 covering the bottom surface of the connecting bar 3251, wherein the AC lines 3254 are exposed from the insulating layer 346 and are in contact and conductive with the dielectric layer 347.

[0048] The present application also provides other embodiments of the electrode array 32 , and the differences among the multiple embodiments are mainly differences in the layout arrangements of the electrode units 320 , the connecting parts 322 , and the wiring parts 323 of the electrode array 32 , which will be described in detail below.

[0049] Second embodiment:

[0050] refer to Figure 8 The figure shows a schematic plan view of a second embodiment of an electrode array 32' of an electrode sheet according to the present application. In the present embodiment, the electrode array 32' also includes a plurality of electrode units 320' arranged at intervals, a plurality of temperature sensors 321', a plurality of connecting parts 322' and a wiring part 323', wherein the temperature sensor 321' is selectively arranged on a portion of the electrode units 320', the connecting part 322' connects two adjacent electrode units 320', and the wiring part 323'' is arranged between the two connecting parts 322' and is welded or detachably connected to a wire (not shown).

[0051] The electrode array 32' is provided with a total of twenty electrode units 320', and the twenty electrode units 320' are also arranged in an array of four rows and six columns. Four electrode units 320' are provided in each of the first row and the fourth row, and six electrode units 320' are provided in each of the second row and the third row. The six electrode units 320' located in each row of the second row and the third row correspond to each other one by one and are arranged in six columns, and the four electrode units 320' located in each row of the first row and the fourth row are located on the middle four columns respectively. From left to right, the four electrode units 320' in the first row are defined as electrode units C1', C2', C3', and C4', the six electrode units 320' in the second row are defined as electrode units C5', C6', C7', C8', C9', and C10', the six electrode units 320' in the third row are defined as electrode units C11', C12', C13', C14', C15', and C16', and the four electrode units 320' in the fourth row are defined as electrode units C17', C18', C19', and C20'.

[0052] The several connecting parts 322' of the electrode array 32' also include a longitudinal connecting part 3221' extending along the longitudinal direction (i.e., upward in the column) and a latitudinal connecting part 3222' extending along the latitudinal direction (i.e., similar to upward in the row); however, in each row, only some adjacent two electrode units 320' are connected by a latitudinal connecting part 3222', and the connecting part 323' is arranged in a "T" shape between the two longitudinal connecting parts 3221'.

[0053] and Figure 2The difference of the electrode array 32 shown is that the electrode units 320' of this embodiment are arranged in a straight line in both the row direction and the column direction, and the two adjacent electrode units 320' in each of the second to fifth columns are connected by a corresponding longitudinal connection portion 3221'. The two adjacent electrode units 320' in the four middle columns of the second row are arranged in a disconnected state in the row direction, that is, the corresponding latitudinal connection portion 3222' is not arranged between the two adjacent electrode units 320' in the four middle columns of the row; the two adjacent electrode units 320' in the four middle columns of the third row are also arranged in a disconnected state in the row direction, that is, the corresponding latitudinal connection portion 3222' is not arranged between the two adjacent electrode units 320' in the four middle columns of the row. The T-shaped connection portion 323' is disposed between the longitudinal connection portion 3221' connecting two electrode units 320' located in the second row and third column and the third row and third column and the longitudinal connection portion 3221' connecting two electrode units 320' located in the second row and fourth column and the third row and fourth column.

[0054] The structure of the electrode unit group of this embodiment is also different from that of the electrode unit group of the first embodiment. Specifically, the electrode unit group of this embodiment includes a first electrode unit group formed by two electrode units C1', C2' located in the first row and a latitudinal connecting portion 3222' therebetween, a second electrode unit group formed by two electrode units C3', C4' located in the first row and a latitudinal connecting portion 3222' therebetween, a third electrode unit group formed by two electrode units C5', C6' located in the second row and a latitudinal connecting portion 3222' therebetween, a fourth electrode unit group formed by two electrode units C7', C13' located in the third column and a meridional connecting portion 3221' therebetween, and a fourth electrode unit group formed by two electrode units C8', C14' located in the fourth column and a meridional connecting portion 3221' therebetween. a fifth electrode unit group formed by the warp connection 3221', a sixth electrode unit group formed by the two electrode units C9', C10' located in the second row and the latitudinal connection 3222' therebetween, a seventh electrode unit group formed by the two electrode units C11', C12' located in the third row and the latitudinal connection 3222' therebetween, an eighth electrode unit group formed by the two electrode units C15', C16' located in the third row and the latitudinal connection 3222' therebetween, a ninth electrode unit group formed by the two electrode units C17', C18' located in the fourth row and the latitudinal connection 3222' therebetween, and a tenth electrode unit group formed by the two electrode units C19', C20' located in the fourth row and the latitudinal connection 3222' therebetween.

[0055] Among the ten electrode unit groups of the electrode array 32', the fourth electrode unit group and the fifth electrode unit group are located at the center of the electrode array 32', and are defined as the central electrode unit group; the other eight electrode unit groups surround the periphery of the central electrode unit group, and are defined as the peripheral electrode unit groups. The aforementioned plurality of latitudinal connecting portions 3222' include a plurality of first latitudinal connecting portions 3222A' connecting two electrode units 320' in each electrode unit group and a plurality of second latitudinal connecting portions 3222B' connecting two adjacent electrode units 320' in two adjacent peripheral electrode unit groups. The two electrode units 320' in each electrode unit group have consistent electrical properties and consistent heat generation conditions, so the temperature is also basically consistent. The specific reasons have been explained in detail in the first embodiment and will not be repeated here.

[0056] In the present embodiment, each of the eight peripheral electrode unit groups of the electrode array 32' is provided with a temperature sensor 321'. Specifically, the eight temperature sensors 321' are respectively provided on the electrode units C2', C3', C6', C9', C12', C15', C18', and C19', and can directly detect the temperature of each peripheral electrode unit group. In the present embodiment, the electrode unit 320' provided with the temperature sensor 321' is defined as the first electrode unit 320A', and the electrode unit 320' not provided with the temperature sensor 321' is defined as the second electrode unit 320B'. Specifically, each peripheral electrode unit group includes a first electrode unit 320A', a second electrode unit 320B' arranged adjacent to the first electrode unit 320A' in the row direction, and a first latitudinal connecting portion 3222A' connecting the first electrode unit 320A' and the second electrode unit 320B'; each central electrode unit group includes two second electrode units 320B' arranged adjacent to each other in the column direction and a longitudinal connecting portion 3221' connecting the two second electrode units 320B'.

[0057] refer to Figures 8 to 9The hierarchical structure of the electrode array 32' of this embodiment is the same as that of the electrode array 32 in the first embodiment, and it also includes a substrate 325' having a plurality of main bodies 3250' and a plurality of connecting strips 3251'. The electrode unit 320' is also provided with a conductive sheet 342' having a through hole (not shown) at the center on the main body 3250'. The main body 3250' of some electrode units 320' is provided with a ground pad (not shown) and a signal pad (not shown) for electrical connection with the temperature sensor 321' in the opening (not shown) of the conductive sheet 342'. The electrode array 32' is provided with a plurality of conductive traces (not numbered) on the substrate 325'. The conductive traces (not numbered) include a ground line (not shown) for transmitting a ground signal, eight temperature measurement lines (not shown) for transmitting a direct current signal, and a plurality of AC lines 3254' for transmitting an alternating current signal. The aforementioned connection portion 323' is provided with eleven gold fingers 3231', one of which is connected to the ground wire (not shown); one is connected to the AC line 3254'; one is connected to the shielding layer (not shown) of the conductive wire (not shown) and is grounded for electromagnetic shielding and to prevent signal interference; the remaining eight are connected to the temperature measuring wires (not shown) one by one.

[0058] The electrode array 32' of this embodiment also includes an insulating layer 346' provided on the substrate 325' in a manner of partially covering the main body 3250' and the connecting portion 322' and completely covering the wiring portion 323', a dielectric layer (not shown) laid on the insulating layer 346' in units of electrode unit groups and on the conductive sheet 342' and the corresponding AC line 3254' not covered by the insulating layer 346' in the electrode unit group, an alloy layer 348' laid on the dielectric layer (not shown) in units of electrode unit groups, and a covering film (not shown) laid on the back of the substrate 325' as a whole. For the specific hierarchical structure of the electrode array 32' of this embodiment and the arrangement of the conductive traces (not numbered), please refer to the relevant description of the electrode array 32 in the first embodiment, which will not be repeated here.

[0059] Continue to refer Figure 8 and Fig. 9As shown, the electrode array 32' of this embodiment does not have the third latitudinal connection part 3222C connecting the peripheral electrode unit group and the central electrode unit group in the electrode array 32 of the first embodiment. The insulating layer 346' of the electrode array 32' of this embodiment covers the main body 3250', the conductive sheet 342', the first latitudinal connection part 3222A' and the connecting strip 3251' of the corresponding longitudinal connection part 3221' in the fourth electrode unit group and the fifth electrode unit group in a partially covering manner, and is provided on the second latitudinal connection part 3222B', the remaining longitudinal connection parts 3221' and the connecting strip 3251' of the connecting part 323' in a manner of completely covering the AC line 3254' and the grounding line (not shown) on the connecting strip 3251' of the second latitudinal connection part 3222B', the remaining longitudinal connection parts 3221' and the connecting part 323'. The insulating layer 346' on the first latitudinal connecting portion 3222A' in each electrode unit group and the longitudinal connecting portion 3221' in each electrode unit group exposes the corresponding AC line 3254', so that the AC line 3254' directly contacts and conducts with the dielectric layer (not shown) laid thereon.

[0060] 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. An electrode sheet comprising a backing and an electrode array attached to the backing, characterized in that: The electrode array includes several electrode unit groups, each of which includes two adjacent electrode units and a connecting part connecting the two adjacent electrode units. The electrode unit is provided with a main body and a conductive sheet located on the main body. The connecting part is provided with a connecting strip and an AC line provided on the connecting strip. The AC line is connected and conductive to the conductive sheets located at both ends of the connecting part. The electrode array is provided with a dielectric layer corresponding to each electrode unit group. The dielectric layer is in contact with and conductive to the two conductive sheets and the AC line in the corresponding electrode unit group.

2. The electrode sheet according to claim 1, characterized in that: The electrode array is provided with an insulating layer, the dielectric layer is arranged on a corresponding portion of the insulating layer, and the conductive sheet is exposed from the insulating layer and in direct contact with the dielectric layer.

3. The electrode sheet according to claim 2, wherein: The AC line in each of the electrode unit groups is exposed from the insulating layer and is in direct contact with the dielectric layer.

4. The electrode sheet according to claim 3, characterized in that: The dielectric layer is provided in a disconnected state at the connection portion between the electrode unit groups to form a gap.

5. The electrode sheet according to claim 1, wherein: The electrode array further includes an alloy layer, which is arranged corresponding to the dielectric layer and covers the dielectric layer.

6. The electrode sheet according to claim 1, characterized in that: The electrode unit group is divided into a peripheral electrode unit group located at the periphery of the electrode array and a central electrode unit group surrounded by the peripheral electrode unit group. The electrode units are divided into first electrode units and second electrode units. Each of the peripheral electrode unit groups includes a first electrode unit, a second electrode unit adjacent to the first electrode unit, and the connecting portion connecting the adjacent first electrode unit and the second electrode unit; each of the central electrode unit groups includes two adjacent second electrode units and the connecting portion connecting the two adjacent second electrode units. The electrode array is provided with a plurality of temperature sensors, and the temperature sensors are respectively arranged on a corresponding first electrode unit in the peripheral electrode unit group.

7. The electrode sheet according to claim 6, characterized in that: The conductive sheet is provided with a through opening, the main body of the first electrode unit is provided with a ground pad and a signal pad in the opening, and the temperature sensor is provided with a ground terminal electrically connected to the ground pad and a signal terminal electrically connected to the signal pad.

8. The electrode sheet according to claim 7, characterized in that: The electrode array is provided with a substrate and a plurality of conductive traces arranged on the front side of the substrate, wherein the conductive traces include a grounding wire electrically connected to the ground pad, a temperature measuring wire electrically connected to the corresponding signal pad, and the AC wire electrically connecting all the conductive sheets. The grounding wire and the AC wire are located on the front side of the substrate, and the temperature measuring wire is located on the back side of the substrate.

9. The electrode sheet according to claim 8, characterized in that: The electrode array further includes a covering film, which presses and fixes all the temperature measuring wires to the back side of the substrate.

10. A tumor electric field treatment system, characterized in that: The electric field generator comprises an electric field generator and the electrode sheet according to any one of claims 1 to 9.

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