Electric field treatment system and electrode patch thereof

Abstract

The utility model provides an electric field treatment system and an electrode patch thereof, the electrode patch comprises a back lining, a transducer array pasted on the back lining and a pasting piece covering the transducer array, the transducer array comprises a flexible circuit board, and the flexible circuit board is arranged on the back lining. The flexible circuit board comprises a main body, a plurality of conductive traces arranged on the main body, a plurality of conductive sheets arranged on the front surface of the main body, and an insulating film arranged on the main body in a manner of covering the conductive traces and the conductive sheets on the front surface of the main body, and the insulating film is provided with hollow areas corresponding to the conductive sheets, the insulating film and the conductive sheets exposed out of the hollow area are covered with dielectric layers. The insulating layers with the same area are laid on the conducting strips with different areas, so that the contact areas of the conducting strips and the dielectric layers are the same, the capacitance values of the corresponding dielectric layers on the conducting strips are the same, and uniform heating of the whole electrode patch is achieved.

Description

Technical Field

[0001] The present application relates to an electric field therapy system and an electrode patch thereof. Background Art

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

[0003] Existing electrode patches, such as the one announced in China Utility Model Patent No. 216603800, include a transducer array, which is provided with a plurality of electrode units, and the electrode units are provided with a main body, a conductive disk arranged on the main body, a dielectric element covering the conductive disk, and an insulating plate arranged on the side of the main body away from the human skin. The dielectric element is a ceramic sheet with a certain thickness and both the dielectric element and the insulating plate are made of rigid materials, making it difficult for the transducer array to be well attached to the surface of the human body. The dielectric element in the electrode patch is soldered to the conductive disk by soldering, and the current at the soldering point is dense and the heat generation is large, resulting in the problem of uneven heating of the electrode patch.

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

[0005] The present application provides an electric field therapy system and an electrode patch thereof that generates heat evenly and improves heat dissipation performance.

[0006] Specifically, the present application is implemented through the following technical solutions: an electrode patch, comprising a backing, a transducer array pasted on the backing and an adhesive covering the transducer array, the transducer array comprising a flexible circuit board, the flexible circuit board comprising a main body, a plurality of conductive traces arranged on the main body, a plurality of conductive sheets arranged on the front of the main body, and an insulating film arranged on the main body in a manner covering the conductive traces and conductive sheets located on the front of the main body, the insulating film being provided with a hollow area corresponding to each of the conductive sheets so that the area of ​​each conductive sheet exposed on the insulating film is the same, and a dielectric layer is covered on the insulating film and on each of the conductive sheets exposed in the hollow area.

[0007] Furthermore, the insulating film includes a plurality of insulating layers arranged one-to-one corresponding to each of the conductive sheets, the insulating layers include a plurality of insulating strips covering corresponding portions of the conductive sheets, and the hollow area is located between two adjacent insulating strips.

[0008] Furthermore, the total area of ​​each of the conductive sheets covered by the insulating strips of the corresponding insulating layer is the same.

[0009] Furthermore, the conductive sheet is provided with at least one avoiding portion for avoiding and accommodating a portion of the conductive trace provided on the front surface of the main body, and the avoiding portion is covered by the insulating strip.

[0010] Furthermore, each of the conductive sheets is covered with the same number of insulating strips.

[0011] Furthermore, the number of the avoidance parts provided on each of the conductive sheets is not exactly the same, and the number of the insulating strips covering each of the conductive sheets is the same and is greater than or equal to the number of the avoidance parts provided on the conductive sheet having the largest number of avoidance parts among the conductive sheets.

[0012] Furthermore, the number of the avoidance portions provided on each of the conductive sheets is the same, and the number of the insulating strips covering the avoidance portions of each of the conductive sheets is also the same.

[0013] Furthermore, the insulating layer also includes a central insulating portion located in the center and an outer ring insulating portion surrounding the conductive sheet, and the insulating strip connects the central insulating portion and the outer ring insulating portion.

[0014] Furthermore, the transducer array is also provided with an alloy layer covering the dielectric layer, and the adhesive is provided on the alloy layer.

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

[0016] The electric field therapy system and electrode patch of the present application lay insulating layers of the same area on conductive sheets of different areas, so that the contact area between the conductive sheet and the dielectric layer is the same, thereby making the capacitance of the corresponding dielectric layer on each conductive sheet the same and the electrical performance tends to be consistent, thereby achieving uniform heating of the entire electrode patch and improving the efficiency of electrical performance detection.

[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 an electric field therapy system according to one embodiment of the present application;

[0019] Figure 2 is a three-dimensional exploded view of an electrode patch of an electric field therapy system according to one embodiment of the present application;

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

[0021] Figure 4 For along Figure 3 Cross-section view in the AA direction;

[0022] Figure 5 for Figure 3 A plan view of a flexible circuit board of a transducer array is shown, wherein the insulating layer, the dielectric layer and the alloy layer are removed;

[0023] Figure 6 for Figure 5 A plan view of a single electrode unit is shown after laying the insulation layer.

[0024] Description of reference numerals:

[0025] Electric field therapy system 100, electric field generator 10, adapter 20, electrode patch 30, backing 31, transducer array 32, connecting portion 321, second main body 3210, third conductive trace 3211, first avoidance portion 32111, fourth conductive trace 3212, second insulating layer 3213, connection portion 322, gold finger 3221, sixth conductive trace 3222, third main body 3223, third insulating layer 3224, electrode unit 34, flexible circuit board 320, main body 34 11. Conductive sheet 3412, opening 34121, avoidance portion 34122, conductive pad 3413, first conductive pad 3413A, second conductive pad 3413B, first conductive trace 3415, second conductive trace 3414, insulating layer 342, central insulating portion 3421, hollow insulating portion 3422, outer ring insulating portion 3423, insulating strip 3424, hollow area 3425, perforation 34211, dielectric layer 343, alloy layer 344, adhesive 33, covering film 345. DETAILED DESCRIPTION

[0026] 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.

[0027] refer to Figure 1As shown, the electric field therapy system 100 includes an electric field generator 10, an adapter 20, and a plurality of pairs of electrode patches 30. The adapter 20 is electrically connected to the electric field generator 10 and each electrode patch 30. The electric field generator 10 generates an alternating current signal that meets the requirements of treatment. The adapter 20 receives the alternating current signal output from the electric field generator 10 and transmits the alternating current signal to the electrode patches 30. The electrode patches 30 are attached to the body surface of the patient corresponding to the tumor area, and the alternating current signal is applied to the tumor area of the patient for tumor electric field therapy.

[0028] Reference Figure 2 As shown, the electrode patch 30 includes a backing 31, a transducer array 32 adhered to the backing 31, and a plurality of paste members 33 covering corresponding parts of the transducer array 32. The transducer array 32 is attached to the body surface corresponding to the tumor site of the patient through the backing 31, and an alternating electric field is applied to the tumor site of the patient to interfere with or prevent the mitosis of the patient's tumor cells, thereby achieving the purpose of treating tumors.

[0029] Reference Figure 3 And Figure 4 As shown, the transducer array 32 includes a plurality of electrode units 34 arranged in an array, a plurality of connecting parts 321 connecting adjacent two electrode units 34, and a wiring part 322 laterally extending from one of the connecting parts 321. In this embodiment, the transducer array 32 has 9 circular electrode units 34 arranged in a three-row and three-column matrix. The column spacing between each electrode unit 34 can be the same or different; the row spacing can be the same or different. Specifically, along the columns of the transducer array 32, adjacent two electrode units 34 in each column are connected by the corresponding connecting parts 321. Along the rows of the transducer array 32, only adjacent two electrode units 34 in the second row are connected by the corresponding connecting parts 321. The transducer array 32 is generally arranged in a "king" shape. The wiring part 322 extends outward from a connecting part 321 located between two columns of electrode units 34, and a plurality of gold fingers 3221 exposed on its surface are provided on both the front and back sides of its free end to reduce the width of the wiring part 322, and appropriate spacing is provided between each gold finger 3221 to avoid problems such as short circuit or signal coupling caused by too close distance.

[0030] Some of the electrode units 34 also include a temperature sensing unit (not shown) located at their centers. During the tumor electric field therapy process, the temperature sensing unit (not shown) monitors and feeds back the temperature of the body surface where the corresponding electrode unit 34 is attached, so as to prevent the temperature of the body surface where the electrode unit 34 is attached from exceeding the safe temperature threshold of the human body and causing low-temperature burns to the patient's body surface.

[0031] Continue to refer to Figure 4 And Figure 5As shown, the electrode unit 34 includes a flexible main body 3411, a conductive sheet 3412 disposed on the side of the main body 3411 facing the skin, an insulating layer 342 disposed on the corresponding part of the main body 3411 and the conductive sheet 3412 and exposing a portion of the conductive sheet 3412, a dielectric layer 343 covering the exposed conductive sheet 3412 and the insulating layer 342, and the adhesive member 33 is disposed on the dielectric layer 343. Optionally, an alloy layer 344 is further disposed on the dielectric layer 343, and accordingly, the adhesive member 33 covers the alloy layer 344. The side of the electrode unit 34 facing the skin is its front side.

[0032] The main body 3411 has the characteristics of light weight, thin thickness, bendability, high deflection, etc. In this embodiment, the main body 3411 is made of polyimide or polyester film. The main body 3411 is arranged in a circular sheet shape and has a thickness of no more than 300μm. Preferably, the thickness of the main body 3411 is 100μm-300μm. The edge of the main body 3411 may be provided with through holes (unnumbered) for heat dissipation to quickly guide out the heat, water vapor, etc. generated by the body surface where the electrode unit 34 is applied. The through hole (unnumbered) is arranged to avoid the connection between the main body 3411 and the connecting portion 321.

[0033] Continue to refer Figure 5As shown, the conductive sheet 3412 is arranged on the main body 3411 in a circular ring shape and is arranged concentrically with the main body 3411, and the diameter of the conductive sheet 3412 is smaller than the diameter of the main body 3411. The thickness of the conductive sheet 3412 is 10μm-75μm, and an opening 34121 is provided at the center thereof to facilitate the arrangement of the corresponding temperature sensing unit (not shown). The main body 3411 of the electrode unit 34 provided with the temperature sensing unit (not shown) is also provided with a conductive pad 3413 located in the opening 34121 and spaced from the conductive sheet 3412. The conductive pad 3413 is electrically connected to the corresponding temperature sensing unit (not shown), and includes a first conductive pad 3413A and a second conductive pad 3413B spaced from each other in the opening 34121. The conductive sheet 3412 is provided with one or more slot-shaped avoidance portions 34122 extending radially outward from the opening 34121, and the avoidance portions 34122 penetrate the conductive sheet 3412 along the thickness direction and radial direction of the corresponding conductive sheet 3412. The electrode unit 34 also includes a first conductive trace 3415 provided on the back of the main body 3411 and a second conductive trace 3414 provided on the front of the main body 3411. The first conductive trace 3415 is electrically connected to the first conductive pad 3413A, and the second conductive trace 3414 is electrically connected to the second conductive pad 3413B. The second conductive trace 3414 extends outwardly from the connection point with the second conductive pad 3413B along the radial direction of the conductive sheet 3412 and extends out of the main body 3411 through the avoidance portions 34122. The second conductive trace 3414 is located in the avoidance portions 34122 and is insulated and spaced from the conductive sheet 3412. In this embodiment, the first conductive trace 3415 is a signal line of the temperature sensing unit (not shown), and the second conductive trace 3414 is a ground line of the temperature sensing unit (not shown). The first conductive trace 3415 is also covered with a covering film 345 to prevent it from being exposed.

[0034] refer to Figure 6As shown, an adhesive (not shown) is disposed on the side of the insulating layer 342 facing the conductive sheet 3412, and is applied to the main body 3411 and the corresponding parts of the conductive sheet 3412 by a hot pressing process. The insulating layer 342 includes a central insulating portion 3421 located at the opening 34121 of the conductive sheet 3412, a hollow insulating portion 3422 located outside the central insulating portion 3421, and an outer ring insulating portion 3423 located outside the hollow insulating portion 3422. In this embodiment, the central insulating portion 3421 is divided into two types. One is the central insulating portion 3421 which is laid at the opening 34121 of the conductive sheet 3412 of the electrode unit 34 without the temperature sensing unit (not shown) and is arranged in a circular sheet shape. Since the conductive pad 3413 is not arranged on the main body 3411 of this electrode unit 34, the central insulating portion 3421 can cover the opening 34121 of the conductive sheet 3412 as a whole. The other is the central insulating portion 3421 which is laid at the opening 34121 of the conductive sheet 3412 of the electrode unit 34 with the temperature sensing unit (not shown). Since the main body 3411 of this electrode unit 34 is A conductive pad 3413 welded to a temperature sensing unit (not shown) is provided at a position corresponding to the opening 34121 of the conductive sheet 3412. The central insulating portion 3421 is provided in a hollow circular sheet shape, and is used to isolate the electrical connection between the conductive pad 3413 and the conductive sheet 3412, and acts as a solder resist to prevent the solder from flowing onto the conductive sheet 3412 when the temperature sensing unit (not shown) is welded, causing an erroneous electrical connection. The central insulating portion 3421 also has a hollow through hole 34211 to expose the conductive pad 3413, and is used to help locate the installation position of the temperature sensing unit (not shown), which helps the temperature sensing unit (not shown) to be accurately and quickly installed. The outer ring insulating portion 3423 is provided around the outer periphery of the conductive sheet 3412.

[0035] In this embodiment, the hollow insulating portion 3422 includes four insulating strips 3424 arranged in strips and connected to both the central insulating portion 3421 and the outer ring insulating portion 3423. A hollow area 3425 is formed between two adjacent insulating strips 3424 to expose the corresponding part of the conductive sheet 3412. The insulating strips 3424 extend radially outward from the central insulating portion 3421 to the edge of the conductive sheet 3412 and are connected to the outer ring insulating portion 3423. The hollow area 3425 can expose part of the conductive sheet 3412. The width of the insulating strip 3424 is greater than the width of the avoidance portion 34122, and is arranged above the avoidance portion 34122 in a covering state. The hollow insulating portion 3422 can completely cover the corresponding avoidance portion 34122 and the second conductive trace 3414 located in the avoidance portion 34122 to avoid mutual crosstalk between the electrical signal transmitted by the conductive sheet 3412 and the electrical signal transmitted by the second conductive trace 3414. The thickness of the hollow insulating portion 3422 is 10 μm-50 μm. The hollow insulating portion 3422 is located at the periphery of the central insulating portion 3421, and can assist the central insulating portion 3421 in positioning and fixing to the corresponding position of the main body 3411. In addition, the hollow insulating portion 3422 can also play a role in heat insulation to reduce heat accumulation of the electrode unit 34.

[0036] In this embodiment, the number of the avoidance portions 34122 provided in the electrode unit 34 is the same as the number of the connection portions 321 connected to the electrode unit 34, so as to facilitate the connection and routing of the second conductive traces 3414. Figure 5 As shown, since the six electrode units 34 located in the first row and the third row of the transducer array 32 are connected to only one connection portion 321, the conductive sheets 3412 of the six electrode units 34 are each provided with only one avoidance portion 34122; since one electrode unit 34 located in the middle row and the middle column of the transducer array 32 is connected to four connection portions 321, the conductive sheet 3412 of the electrode unit 34 is provided with four avoidance portions 34122; since the remaining two electrode units 34 located in the middle row are each connected to three connection portions 321, the conductive sheets 3412 of the two electrode units 34 are each provided with three avoidance portions 34122. Therefore, the actual areas of the conductive sheets 3412 on each electrode unit 34 are different due to the different numbers of the avoidance portions 34122 provided.

[0037] In order to make the area of ​​each conductive sheet 3412 exposed from the insulating layer 342 and in contact with the dielectric layer 343 the same, this can be achieved by setting the area of ​​the insulating layer 342 covered on the conductive sheet 3412 of the electrode unit 34. Specifically, this can be achieved by providing the same number and size of insulating strips 3424 on the conductive sheet 3412 of each electrode unit 34, and the number of insulating strips 3424 provided on each conductive sheet 3412 is greater than or equal to the number of connecting portions 321 connected to the electrode unit 34 connected to the largest number of connecting portions 321 in the transducer array 32, and the insulating strips 3424 are provided on each conductive sheet 3412 in a manner of covering the corresponding avoiding portions 34122 of each conductive sheet 3412. Since each avoidance portion 34122 of the conductive sheet 3412 of each electrode unit 34 can be covered by the corresponding insulating strip 3424, and the area of ​​the conductive sheet 3412 of each electrode unit 34 exposed in the hollow area 3425 is the same, after laying the dielectric layer 343 on each conductive sheet 3412 and the insulating layer 342, the contact area between the conductive sheet 3412 of each electrode unit 34 and the dielectric layer 343 can be made the same, and then when the AC signal is transmitted to the dielectric layer 343 through the conductive sheet 3412, the current density flowing through each dielectric layer 343 can be ensured to be consistent, so that the heating and temperature rise of each electrode unit 34 are consistent during long-term tumor treatment, which is conducive to the control and adjustment of the AC signal. In this embodiment, the electrode unit 34 located at the center is connected to the largest number of connecting portions 321, which is four in number, so the number of insulating strips 3424 of the hollow insulating portion 3422 must be greater than or equal to four. In this embodiment, the number of insulating strips 3424 of each electrode unit 34 is four and they are arranged in a "cross" shape. The insulating layer 342 covers the conductive sheet 3412 so that the contact area between the conductive sheets 3412 of different areas and the dielectric layer 343 is the same, so that the capacitance of each electrode unit 34 with different numbers of avoidance portions 34122 is consistent, so as to improve the efficiency of electrical performance inspection of the electrode unit 34, and also make the heat generation of each electrode unit 34 tend to be consistent.

[0038] The dielectric layer 343 is laid on the insulating layer 342 and the conductive sheet 3412 not covered by the insulating layer 342. The conductive sheet 3412 located on the main body 3411 and exposed to the insulating layer 342 is electrically connected to the dielectric layer 343. The size of the dielectric layer 343 is larger than the size of the conductive sheet 3412 to prevent non-capacitive coupling between the electric field and the human body, thereby ensuring the safety of the human body. The size of the dielectric layer 343 is slightly smaller than the size of the main body 3411 to obtain full support for the main body 3411. The dielectric layer 343 of the electrode unit 34 provided with a temperature sensing unit (not shown) also covers the top of the temperature sensing unit (not shown). The dielectric layer 343 is a polymer dielectric layer with a high dielectric constant and low dielectric loss, which is made of a thin film material with non-fixed crystal orientation, high flexibility and high toughness. In this embodiment, the material of the dielectric layer 343 is a polymer with a dielectric constant of not less than 20 and a dielectric strength of not less than 40V / μm to avoid breakdown under normal applied voltage. The polymer is a polymer with relaxor ferroelectric behavior, which can 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 343 can be formed on the corresponding parts of the conductive sheet 3412, part of the insulating layer 342 and the temperature sensing unit (not shown) by evaporation, sputtering or ion plating vapor deposition, or can be formed on the corresponding parts of the conductive sheet 3412, part of the insulating layer 342 and the temperature sensing unit (not shown) by printing, spraying or casting. The thickness of the dielectric layer 343 is 3μm-10μm.

[0039] The alloy layer 344 is disposed on the dielectric layer 343, and the adhesive member 33 is disposed on the alloy layer 344. The alloy layer 344 is used as an auxiliary layer to increase the conductivity between the dielectric layer 343 and the adhesive member 33. The size of the alloy layer 344 is slightly smaller than the size of the dielectric layer 343. The material of the alloy layer 344 can be one or more of zinc-aluminum alloy, zinc-copper alloy, silver-titanium or graphite. The alloy layer 344 can be deposited on the surface of the dielectric layer 343 using a vapor deposition method, and its thickness does not exceed 100 nm.

[0040] Continue to refer Figure 5As shown, the connection part 321 includes a strip-shaped second main body part 3210, a third conductive trace 3211 provided on the front of the second main body part 3210, a fourth conductive trace 3212 spaced and insulated from the third conductive trace 3211, a plurality of fifth conductive traces (not shown) provided on the back of the second main body part 3210, a second insulating layer 3213 provided on the front of the second main body part 3210 and covering the third conductive trace 3211 and the fourth conductive trace 3212, and a second covering film (not shown) provided on the back of the second main body part 3210 and covering the fifth conductive trace (not shown). The second main body part 3210, the second insulating layer 3213 and the second covering film (not shown) of the connection part 321 are connected to the main body part 3411, the insulating layer 342 and the covering film 345 of the electrode unit 34 in a one-to-one correspondence and are integrally formed. The third conductive trace 3211 is provided with a groove-shaped first avoidance portion 32111, the fourth conductive trace 3212 is located in the first avoidance portion 32111 and is spaced apart from the third conductive trace 3211, the first avoidance portion 32111 is connected to the corresponding avoidance portion 34122 of the electrode unit 34 connected thereto, the third conductive trace 3211 is electrically connected to the conductive sheet 3412 of the electrode unit 34 connected thereto, the fourth conductive trace 3212 is electrically connected to the second conductive trace 3414 of the electrode unit 34 connected thereto; a plurality of fifth conductive traces (not shown) are respectively electrically connected to the first conductive trace 3415 of a corresponding electrode unit 34 among the plurality of electrode units 34. The conductive sheet 3412 of each electrode unit 34 and the second conductive trace 3414 of each temperature sensing unit (not shown) are electrically connected through the connection portion 321, and the first conductive trace 3415 of each temperature sensing unit (not shown) is independently provided.

[0041] The connection part 322 is extended outward from the connection part 321 between two columns of electrode units 34. A plurality of sixth conductive traces 3222 corresponding to and electrically connected to the gold fingers 3221 are arranged in the connection part 322. The connection part 322 also includes a strip-shaped third main body part 3223 extending laterally from the second main body part 3210 of the connection part 321, a third insulating layer 3224 arranged on the front side of the third main body part 3223 and covering the sixth conductive traces 3222 located on the front side of the third main body part 3223, and a third covering film (not shown) arranged on the back side of the third main body part 3223 and covering the back side of the third main body part 3223. The first conductive traces 3415 located on the back side of the main body 3411 of each electrode unit 34 are electrically connected to the sixth conductive traces 3222 located on the back side of the third main body 3223 of the connection part 322 through the fifth conductive traces (not shown) located on the back side of the second main body 3210 of the connection part 321 connected to the electrode unit 34. The third main body 3223 is integrally formed with the main body 3411 and the second main body 3210, and together constitute the main body (not numbered) of the transducer array 32. The conductive sheet 3412 of each electrode unit 34 is electrically connected to a corresponding sixth conductive trace 3222 of the wiring portion 322 located on the front face of the third main body portion 3223 via the third conductive trace 3211 of the connecting portion 321 electrically connected thereto, and the second conductive trace 3414 of each electrode unit 34 is electrically connected to a corresponding sixth conductive trace 3222 of the wiring portion 322 located on the front face of the third main body portion 3223 via the fourth conductive trace 3212 of the connecting portion 321 connected to the electrode unit 34 located on the front face of the second main body portion 3210. The first conductive trace 3415 and the second conductive trace 3414 located on the front and back sides of the main body 3411 of the electrode unit 34, the third conductive trace 3211, the fourth conductive trace 3212 and the fifth conductive trace (not shown) located on the front and back sides of the second main body 3210 of the connecting part 321, and the sixth conductive trace 3222 located on the front and back sides of the third main body 3223 of the connecting part 322 together constitute the conductive trace (not numbered) disposed on the front and back sides of the main body (not numbered). The insulating layer 342 of the electrode unit 34, the second insulating layer 3213 of the connecting part 321 and the third insulating layer 3224 of the connecting part 322 together constitute the insulating film (not numbered) disposed on the main body (not numbered). The covering film 345 of the electrode unit 34, the second covering film (not shown) of the connecting part 321 and the third covering film (not shown) of the connecting part 322 are integrally formed and together constitute the insulating coating film (not numbered) disposed on the back side of the main body (not numbered). The main body (unnumbered), the conductive traces (unnumbered) arranged on the main body (unnumbered), the conductive sheet 3412 and the conductive pad 3413, the insulating film (unnumbered) arranged on the front side of the main body (unnumbered) and the insulating coating (unnumbered) arranged on the back side of the main body (unnumbered) together constitute the flexible circuit board 320 of the transducer array 32.The dielectric layer 343 and the alloy layer 344 are both disposed on the main body 3411 of the flexible circuit board 320. From the perspective of the formation of the electrode unit 34, the dielectric layer 343 is disposed on the side of the flexible circuit board 320 facing the human skin, and the temperature sensor unit (not shown) is selectively disposed on the side of the main body 3411 of the flexible circuit board 320 facing the human skin.

[0042] The backing 31 is in sheet form and is made of a flexible, breathable insulating material. The backing 31 is soft, thin, moisture-proof, and breathable so that it can be applied to the patient's body surface for a long time and still keep the patient's skin surface dry. A biocompatible adhesive (not shown) is applied on the front side of the backing 31 facing the patient's body surface to tightly fit the backing 31 to the patient's body surface corresponding to the tumor site.

[0043] The adhesive member 33 has double-sided adhesiveness. One side of the adhesive member 33 is adhered to the electrode unit 34, and the other side is applied to the human body surface skin as a covering layer to keep the skin surface moist and relieve local pressure. The adhesive member 33 is preferably a conductive adhesive member. Specifically, the adhesive member 33 is a conductive hydrogel.

[0044] The electrode patch 30 also includes a wire (not shown) electrically connected to the wiring portion 322 of the transducer array 32. The end of the wire (not shown) away from the wiring portion 322 is provided with a plug (not shown) electrically connected to the adapter 20. The adapter 20 transmits the alternating electric signal generated by the electric field generator 10 to each electrode patch 30, so that a therapeutic electric field for treating tumors is generated between the paired electrode patches 30.

[0045] The electrode patch 30 also includes a release paper (not shown) pasted on the outside of the adhesive member 33 and the backing 31 to protect the backing 31 and the adhesive member 33 and prevent the backing 31 and the adhesive member 33 from being contaminated. The electrode patch 30 can be covered on the adhesive member 33 and the backing 31 by only one piece of release paper (not shown), or can be covered on the adhesive member 33 and the backing 31 by two or more pieces of release paper (not shown). When in use, tear off the release paper (not shown) and stick the electrode patch 30 on the body surface corresponding to the tumor site of the human body.

[0046] 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 patch, comprising a backing, a transducer array adhered to the backing, and a pasting member covering the transducer array, wherein the transducer array comprises a flexible circuit board, characterized in that: The flexible circuit board includes a main body, a plurality of conductive traces arranged on the main body, a plurality of conductive sheets arranged on the front side of the main body, and an insulating film arranged on the main body in a manner of covering the conductive traces and conductive sheets located on the front side of the main body, wherein the insulating film is provided with hollow areas corresponding to each of the conductive sheets so that the areas of each conductive sheet exposed on the insulating film are the same, and a dielectric layer is covered on the insulating film and on each of the conductive sheets exposed in the hollow areas.

2. The electrode patch according to claim 1, characterized in that: The insulating film includes a plurality of insulating layers arranged in one-to-one correspondence with each of the conductive sheets, the insulating layers include a plurality of insulating strips covering corresponding parts of the conductive sheets, and the hollow area is located between two adjacent insulating strips.

3. The electrode patch according to claim 2, characterized in that: The total area of ​​each of the conductive sheets covered by the insulating strips of the corresponding insulating layer is the same.

4. The electrode patch according to claim 2 or 3, characterized in that: The conductive sheet is provided with at least one avoiding portion for avoiding and accommodating a portion of the conductive trace provided on the front surface of the main body, and the avoiding portion is covered by the insulating strip.

5. The electrode patch according to claim 4, characterized in that: Each of the conductive sheets is covered with the same number of insulating strips.

6. The electrode patch according to claim 4, characterized in that: The number of the avoidance parts arranged on each of the conductive sheets is not exactly the same, and the number of the insulating strips covering each of the conductive sheets is the same and is greater than or equal to the number of the avoidance parts arranged on the conductive sheet with the largest number of avoidance parts among the conductive sheets.

7. The electrode patch according to claim 4, characterized in that: The number of the avoidance portions arranged on each of the conductive sheets is the same, and the number of the insulating strips covering the avoidance portions of each of the conductive sheets is also the same.

8. The electrode patch according to claim 2, characterized in that: The insulating layer further includes a central insulating portion located in the center and an outer ring insulating portion surrounding the conductive sheet, and the insulating strip connects the central insulating portion and the outer ring insulating portion.

9. The electrode patch according to claim 1, characterized in that: The transducer array is also provided with an alloy layer covering the dielectric layer, and the adhesive is provided on the alloy layer.

10. An electric field therapy system, characterized in that: It comprises an electric field generator and the electrode patch as claimed in any one of claims 1 to 9.

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