CN216571198U

CN216571198U - Electrode patch

Info

Publication number: CN216571198U
Application number: CN202123244943.3U
Authority: CN
Inventors: 孙虎; 于晶; 张军
Original assignee: Jiangsu Hailai Xinchuang Medical Technology Co Ltd
Current assignee: Jiangsu Hailai Xinchuang Medical Technology Co Ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-24
Anticipated expiration: 2031-12-22

Abstract

The present invention provides an electrode patch, which includes: a backing; an electrical functional assembly adhered to the backing and comprising a plurality of electrode units; a plurality of moisture absorbing elements adhered to the backing and positioned between the plurality of electrode units. According to the electrode patch, the plurality of moisture absorption elements are arranged between the electrode units so as to absorb and store sweat or water vapor generated on the body surface of the corresponding part of the electrode patch applied by a patient, so that the skin problem caused by the sweat or the water vapor is avoided, and the comfort of the electrode patch application is improved.

Description

Electrode patch

Technical Field

The utility model relates to an electrode patch, and belongs to the technical field of medical instruments.

Background

At present, the treatment modes of tumors mainly comprise operations, radiotherapy, chemotherapy and the like, but the methods have corresponding defects, for example, radiotherapy and chemotherapy can generate side effects and kill normal cells. The electric field for treating tumor is one of the current development fronts, and the tumor treating electric field (tumor treating fields) emits wave with high change rate to corresponding tissues through a special electric field generating device, and then conducts energy to corresponding parts of human body through an insulating material in a radiation or induction mode, so that the mitosis process of destroying cells can be interfered, and the tumor treating electric field has a good effect on tumor treatment. Research shows that the electric field treatment has obvious effect in treating diseases such as glioblastoma, non-small cell lung cancer, malignant pleural mesothelioma and the like, and the electric field applied by the method can influence the aggregation of tubulin, prevent the formation of spindles, inhibit the mitosis process and induce the apoptosis of cancer cells.

The electric field therapeutic apparatus for treating tumor mainly includes electric field generator, electrode paster and adapter connected between the electric field generator and electrode paster, the electrode paster is applied on the skin of correspondent focus of human body so as to apply the alternating electric field to the tissue region in which the tumor is positioned, and the time for continuously applying alternating electric field for treatment is 2-4 days. However, the electrode patch is not beneficial to sweat removal after being applied to the skin for a long time, the electrode patch can cause blockage of sweat glands, hair follicles and the like of the skin, and substances in the sweat can cause reactions such as allergy, red swelling and the like.

Accordingly, there is a need for an improved electrode patch that overcomes the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides an electrode patch which can absorb sweat on the body surface of a patient and avoid skin allergy caused by the fact that the sweat blocks hair follicles.

Specifically, the utility model is realized by the following technical scheme: an electrode patch, comprising: a backing; an electrical functional assembly adhered to the backing and comprising a plurality of electrode units; a plurality of moisture absorbing elements adhered to the backing and positioned between the plurality of electrode units. According to the electrode patch, the plurality of moisture absorption elements are arranged between the electrode units so as to absorb and store sweat or water vapor generated on the body surface of the corresponding part of the electrode patch applied by a patient, so that the skin problem caused by the sweat or the water vapor is avoided, and the comfort of the electrode patch application is improved.

Furthermore, the electrode unit comprises a support piece which is adhered on the backing and surrounds the electrode unit, and the support piece is provided with a plurality of first through holes which surround the electrode unit and a plurality of second through holes which accommodate the moisture absorption elements.

Further, the moisture absorption element is aligned with the adjacent electrode unit up and down or left and right.

Further, the shape and size of the moisture absorption element are consistent with those of the electrode unit.

Further, the thickness of the moisture absorbing element is greater than that of the supporting member.

Furthermore, a lead electrically connected with the electrical function component is also arranged, and the support part is provided with a complete coverage area in an area right above the connection of the lead and the electrical function component.

Further, the electrode units are arranged in multiple rows and multiple columns, and the moisture absorption elements are arranged between every two adjacent columns of electrode units in a strip shape.

Furthermore, the electrical functional assembly comprises a flexible circuit board, and a plurality of insulating plates and a plurality of dielectric elements which are arranged on two opposite sides of the flexible circuit board, wherein the dielectric elements, the insulating plates and the corresponding parts of the flexible circuit board corresponding to the dielectric elements jointly form the electrode unit.

Further, the flexible circuit board is provided with a conductive disc welded with the dielectric element on one side of the flexible circuit board far away from the back lining.

Further, the dielectric element and the corresponding portion of the corresponding flexible circuit board are arranged in a disc shape, the outer diameter of the dielectric element is smaller than the diameter of the corresponding portion of the corresponding flexible circuit board, and the dielectric element can cover the conductive disc.

According to the electrode patch, the plurality of moisture absorption elements are arranged between the electrode units so as to absorb and store sweat or water vapor generated on the body surface of the corresponding part of the electrode patch applied by a patient, so that the skin problem caused by the sweat or the water vapor is avoided, and the comfort of the electrode patch application is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.

Drawings

Fig. 1 is a perspective assembly view of an electrode patch according to an embodiment of the present invention.

Fig. 2 is a top view of the electrode patch of fig. 1.

Fig. 3 is an exploded perspective view of the electrode patch of fig. 2.

Fig. 4 is a side view of the electrode patch of fig. 2.

Fig. 5 is an exploded perspective view of the electrical functional components and leads of the electrode patch of fig. 3.

Fig. 6 is a plan view of a dielectric element of the electrical functional assembly of fig. 5.

Description of reference numerals:

the electrode patch 100, the electrical function component 1, the electrode unit 10, the flexible circuit board 11, the main body portion 111, the connection portion 112, the first connection portion 112A, the second connection portion 112B, the wire connection portion 113, the conductive pad 114, the conductive core 115, the gold finger 116, the insulating plate 12, the dielectric element 13, the through hole 131, the metal layer 132, the temperature sensor 14, the backing 2, the notch 21, the wing 22, the support member 3, the first through hole 31, the second through hole 32, the covering region 33, the moisture absorbing element 4, the wire 5, and the heat shrink tube 51.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of devices, systems, apparatus, and methods consistent with certain aspects of the utility model.

The electric field therapeutic apparatus for treating tumor comprises an electric field generator and an electrode patch 100 connected with the electric field generator, wherein the electrode patch 100 is pasted on the skin surface of a human body, and a therapeutic electric field generated by the electric field generator acts on the human body. The electrode patch 100 according to an embodiment of the present invention is applied to the head of a human body for the adjuvant treatment of brain tumors, such as glioblastoma multiforme.

Referring to fig. 1 to 6, an electrode patch 100, which can be attached to a body surface corresponding to a tumor region of a patient to apply an alternating electric field to the tumor region of the patient to disturb or inhibit mitosis of tumor cells, thereby treating tumor, includes a flexible backing 2, an electrical functional component 1 attached to the backing 2, a support 3 attached to the backing 2, a plurality of moisture-absorbing elements 4 attached to the backing 2, an adhesive (not shown) attached to the support 3, and a lead 5 electrically connected to the electrical functional component 1. The electrode patch 100 is attached to the body surface of a patient corresponding to the tumor part through the backing 2, and applies an alternating electric field to the tumor part of the patient through the electric functional component 1 to interfere or prevent mitosis of tumor cells of the patient, thereby achieving the purpose of treating tumors.

The backing 2 is in the form of a sheet-like arrangement, which is mainly made of a flexible, gas-permeable insulating material. The backing 2 is a mesh fabric. Specifically, the back lining 2 is a mesh non-woven fabric which is soft, light and thin, moisture-proof and breathable, and can keep the skin surface of the patient dry after being pasted on the body surface of the patient for a long time. The surface of the backing 2 facing the patient's body surface is further coated with a compatible adhesive (not shown) for adhering the backing 2 closely to the body surface of the patient corresponding to the tumor site.

The backing 2 is arranged in a substantially rectangular parallelepiped sheet shape. The edge of the backing 2 is arranged concavely and convexly. The backing 2 has a plurality of wings 22 extending outwardly from its peripheral side for an operator to hold to apply the electrode patch 100 to the body surface of a patient corresponding to a tumor. The backing 2 also has a plurality of notches 21 recessed inwardly from its peripheral side. The notches 21 at the four corners of the backing 2 are used to prevent the backing 2 from forming wrinkles when being applied to the body surface corresponding to the tumor, so as to prevent air from entering between the adhesive member (not shown) and the skin from the wrinkles to increase the impedance between the electrical functional component 1 and the skin, which results in increased heat generation of the electrical functional component 1 and low-temperature scald. The notch 21 on the long side of the backing 2 is arranged at the center of the long side of the backing 2 and corresponds to the position of the external auditory meatus bone of the patient so as to assist in applying the electrode patch to the body surface corresponding to the tumor part of the patient. The side flaps 22 on the long sides of the backing 2 are located on both sides of the notch 21 on the same long side of the backing 2. The side wing 22 positioned at the short side of the backing 2 is arranged at the center of the short side of the backing 2 and corresponds to the position of the eyebrow bone or the occipital bone of the patient so as to assist in applying the electrode patch to the body surface corresponding to the tumor part of the patient. The side flaps 22 are disposed on the periphery of the backing 2 in an axisymmetric manner.

The electrical functional assembly 1 is adhered to the backing 2 by a biocompatible adhesive (not shown) on the backing 2 for applying an alternating electric field to the tumor site of the patient. The electrical functional assembly 1 includes a flexible circuit board 11, a temperature sensor 14 disposed on the flexible circuit board 11, and a dielectric element 13 and an insulating plate 12 respectively disposed on two opposite sides of the flexible circuit board 11. The temperature sensor 14 and the insulating plate 12 are respectively located on two opposite sides of the flexible circuit board 11. The temperature sensor 14 is located on the same side of the flexible circuit board 11 as the dielectric element 13. The dielectric element 13 is disposed on a side of the flexible circuit board 11 facing away from the backing 2, and the insulating board 12 is disposed on a side of the flexible circuit board 11 facing the backing 2. The electrical functional assembly 1 is adhered to the backing 2 by adhering a biocompatible adhesive (not shown) coated on the backing 2 to corresponding portions of the insulating plate 12 and the flexible circuit board 11.

The flexible circuit board 11 has a plurality of main body portions 111 arranged in a circular shape, a connection portion 112 connected to the main body portions 111, and a wiring portion 113 electrically connected to the connection portion 112. The supporting member 3 is disposed at a corresponding position of the main body portion 111 of the flexible circuit board 11. The connecting portion 112 is in the form of a strip or a strip, and can be adhered to the backing 2 by a biocompatible adhesive (not shown) provided on the backing 2. The side of the body portion 111 facing the surface of the patient's body has a conductive pad 114 exposed at its surface. The conductive pad 114 includes a plurality of conductive cores 115 protruding or exposed from the main body 111, and can be soldered to the corresponding portion of the dielectric element 13 to electrically connect the flexible circuit board 11 and the dielectric element 13. The plurality of conductive cores 115 of the conductive pad 114 are arranged in a central symmetry, and the center of the conductive pad 114 and the center of the main body 111 are located on the same straight line. The plurality of conductive cores 115 of the conductive pad 114 have a uniform thickness. The top surfaces of the conductive cores 115 are all located on the same plane, so that the position deviation of the dielectric element 13 caused by the stacking of soldering tin during welding can be effectively prevented. The wiring portion 113 is connected to the lead 5 by soldering to transmit the alternating voltage from the lead 5 to the flexible circuit board 11. The electrode patch 100 applies an alternating electric field to a tumor region of a patient through the conductive pad 114 and the dielectric element 13, which are exposed to the body surface side of the flexible circuit board 11 through the main body portion 111. In the present embodiment, the flexible circuit board 11 includes nine main body portions 111 arranged in an array of three rows and three columns. The connecting portion 112 includes a plurality of first connecting portions 112A and a plurality of second connecting portions 112B. The first connecting portion 112A connects two adjacent main body portions 111 in the same row. The second connection portion 112B connects two adjacent body portions 111 located in the middle row. The wire connecting portion 113 extends laterally from a middle portion of one of the second connecting portions 112B. The wire connecting portion 113 is perpendicular to the second connecting portion 112B, and is electrically connected to the lead 5. The wire connecting portion 113 is disposed in a flat shape, and a row of gold fingers 116 are disposed on two opposite sides thereof. The gold fingers 116 disposed on opposite sides of the wiring portion 113 are disposed in a staggered manner to facilitate welding with the lead 5. The number of the dielectric members 13 corresponds to the number of the main body portion 111 of the flexible circuit board 11.

The temperature sensor 14 is provided on the main body 111 of the flexible circuit board 11 by soldering. The temperature sensor 14 is provided on the main body 111 of the flexible circuit board 11 on the side close to the body surface of the patient.

The temperature sensor 14 is located at the middle portion of the main body portion 111 of the flexible circuit board 11, and detects the temperature of the corresponding adhesive member (not shown), and thus the temperature of the body surface of the patient corresponding to the adhesive member (not shown). The temperature sensor 14 is located between the flexible circuit board 11 and the adhesive member (not shown). The temperature sensor 14 is a thermistor. The temperature sensor 14 is used for detecting the temperature of a pasting piece (not shown) directly pasted on the body surface of the patient, and then reasonably controls the applied alternating electric field, so as to avoid the phenomenon that the body surface of the patient is burnt at low temperature of the skin of the body of the patient due to the fact that the body surface of the patient gathers due to the fact that the alternating electric field is applied by the electrode patch 100 for a long time and the heat generated by mutual friction of water molecules on the body surface of the patient under the action of the alternating electric field is generated due to overhigh temperature rise of the body surface of the patient. The number of temperature sensors 14 is at most the same as the number of dielectric elements 13. That is, in other embodiments, the number of temperature sensors 14 is less than the number of dielectric elements 13. Some of the flexible circuit boards 11 have temperature sensors 14 soldered to the main body portion 111 thereof, and some of the flexible circuit boards 11 have no temperature sensors 14 soldered thereto. The temperature sensor 14 is selectively soldered to the main body portion 111 of the flexible circuit board 11.

The dielectric element 13 is a substantially circular sheet-like structure, and is disposed on the side of the main body 111 of the flexible circuit board 11 facing the surface of the patient body by soldering. The dielectric member 13 is made of a material having a high dielectric constant, which has a property of blocking direct current but allowing alternating current to pass therethrough. The dielectric element 13 in this embodiment is a ceramic sheet with a relatively high dielectric constant, which is at least greater than 1000. The dielectric element 13 has a through hole 131 formed therethrough for receiving the temperature sensor 14. The through hole 131 is provided in the middle of the dielectric element 13. The diameter of the perforation 131 is slightly larger than the width of the temperature sensor 14. The size of the dielectric element 13 is slightly smaller than the size of the main body portion 111 of the flexible circuit board 11. The dielectric element 13 is soldered to the main body portion 111 of the flexible circuit board 11, and a gap (not shown) is formed between the dielectric element 13 and the main body portion 111 of the flexible circuit board 11. A sealant (not shown) is filled in a gap (not shown) between the dielectric element 13 and the main body 111 of the flexible circuit board 11 to protect a welding portion (not shown) between the dielectric element 13 and the main body 111 of the flexible circuit board 11. As shown in fig. 6, an annular metal layer 132 is attached to the side of the dielectric element 13 facing the conductive core 115, and the metal layer 132 is connected to the conductive pad 114 by welding.

After the metal layer 132 of the dielectric element 13 is soldered to the conductive core 115, a gap (not shown) between the dielectric element 13 and the body 111 is filled with a sealant. A space (not shown) is provided between the inner ring of the metal layer 132 and the edge of the through hole 131 of the dielectric element 13, so that the temperature sensor 14 can be prevented from being short-circuited due to the overflow of the solder to the center of the main body 111, and discomfort caused by the direct current not blocked by the dielectric element 13 acting on the body surface corresponding to the tumor part of the patient due to the overflow of the solder to the outside of the main body 111 can be prevented. The outer diameter of the dielectric element 13 is slightly smaller than the diameter of the main body 111, and the dielectric element 13 can completely cover the conductive disc 114, so that the gap (not shown) between the dielectric element 13 and the main body 111 can be fully filled with the sealant (not shown) while the metal layer 132 of the dielectric element 13 and the conductive disc 114 are reliably welded, and the through hole 131 of the dielectric element 13 can also be further fully filled with the sealant (not shown).

The insulating plate 12 is disposed in a substantially circular sheet shape, and one side thereof close to the patient body surface is attached to the main body 111 of the flexible circuit board 11 by an adhesive (not shown), and one side thereof away from the patient body surface is attached to the backing 2 by a biocompatible adhesive (not shown) provided on the backing 2. The insulating plate 12 is disposed on a side of the main body 111 of the flexible circuit board 11 away from the body surface of the patient, and is used for supporting the main body 111 of the flexible circuit board 11, so as to respectively solder the temperature sensor 14 and the dielectric element 13 onto the main body 111 of the flexible circuit board 11. The insulating plate 12 is interposed between the backing 2 and the main body 111 of the flexible circuit board 11 after the electrical functional component 1 is assembled on the backing 2. The diameter of the insulating plate 12 is substantially the same as the diameter of the main body 111 of the flexible circuit board 11. The number of the insulating plates 12 corresponds to the number of the main body portions 111 of the flexible circuit board 11. The number of the insulating plates 12 corresponds to the number of the dielectric members 13. The insulating plate 12 is made of an insulating material, and can enhance the strength of the flexible circuit board 11, and is adhered to the side of the flexible circuit board 11 away from the patient's body surface by a sealant (not shown) to provide a flat welding plane for the conductive pads 114 and the dielectric elements 13. The insulating plate 12 is insulated from the conductive pad 114 on the main body portion 111 of the flexible circuit board 11. The insulating plate 12 is electrically insulated from the flexible circuit board 11.

The body 111, the dielectric element 13, and the insulating plate 12 together constitute the electrode unit 10. The electrode units 10 are connected by a connecting portion 112.

The support 3 is integrally provided, and the support 3 is placed on the connecting portion 112 of the flexible circuit board 11 in a manner of surrounding the electrode unit 10 and is adhered to the backing 2 by a biocompatible adhesive (not shown) on the backing 2. The support 3 is provided with a plurality of first through holes 31. The first through hole 31 substantially coincides with the outer contour of the electrode unit 10 of each column, and has three circular holes provided in communication therewith. The support member 3 is preferably made of foam and surrounds each electrode unit 10 to support an adhesive member (not shown). As a simple alternative, the first through holes 31 may also be provided individually for each electrode unit 10, with each first through hole 31 surrounding only one electrode unit 10.

A plurality of moisture absorption components 4 distribute and set up between adjacent electrode unit 10 for absorb and store sweat or the steam that the patient pasted the body surface production of electrode paster corresponding part, avoid sweat or steam to block up the hair follicle and arouse the skin problem, improve the travelling comfort that electrode paster 100 pasted.

The support member 3 is further provided with second through holes 32 for accommodating the moisture absorbing elements 4 between the plurality of first through holes 31, and in the present embodiment, the support member 3 is provided with five second through holes 32. The five second through holes 32 are arranged in two rows and are respectively positioned in the area between the two adjacent rows of the first through holes 31. The second through hole 32 is disposed at a position away from the connection portion 113 of the flexible circuit board 11 and electrically connected to the lead 5, so as to prevent the absorbed liquid from affecting the electrical connection between the lead 5 and the flexible circuit board 11. The support 3 has a covering region 33, and the covering region 33 is located right above the connection of the lead 5 and the wiring portion 113 of the flexible circuit board 11 of the electrical functional assembly 1, and is disposed in a solid state. That is, three second through holes 32 are provided in one of the two columns of second through holes 32, and two second through holes 32 are provided in the other column so as to avoid the wires 5.

The absorbent element 4 is of circular sheet-like configuration, and the absorbent element 4 substantially conforms to the edge of the second aperture 32, is embedded within the second aperture 32 of the support member 3 and is adhered to the backing 2. The shape and size of the moisture absorption element 4 are substantially identical to those of the electrode unit 10, and the moisture absorption element 4 is vertically aligned or horizontally aligned with the adjacent electrode units 10.

As a simple alternative, two or three moisture absorbing elements 4 in the same row may be replaced by a single whole moisture absorbing element 4 arranged between two adjacent rows of electrode units 10, the shape of the moisture absorbing element 4 is not limited to a circular structure, and the shape of the second through hole 32 is set corresponding to the shape of the moisture absorbing element 4. The moisture absorption element 4 can use a support member with good water absorption, and the thickness of the moisture absorption element 4 can be slightly larger than the support member 3 and the electrode unit 10 (see fig. 4), so that the water absorption and storage performance can be improved.

A full sheet adhesive (not shown) is applied to the support 3 and the electrode unit 10 on the side remote from the backing 2. The whole piece of the adhesive member (not shown) has substantially the same size as the support 3, is entirely attached to the support 3, and covers the electrode unit 10 fitted in the first through hole 31 and the moisture absorbing element 4 fitted in the second through hole 32. As a simple alternative, the adhesive member (not shown) is provided in three pieces, each of which is attached to the electrode units 10 arranged in the column direction, the size of the adhesive member (not shown) is slightly larger than that of the first through hole 31, and the edge of the adhesive member (not shown) is attached to the support member 3 around the electrode units 10.

When assembling, the electrical functional assembly 1 is adhered to the backing 2, then the first through holes 31 of the support 3 are aligned with the corresponding electrode units 10 and adhered to the backing 2, then the moisture absorbing elements 4 are placed in the second through holes 32, and finally the adhesive member (not shown) is covered.

One end of the lead 5 is electrically connected to the connection portion 113 of the flexible circuit board 11 of the electrical function module 1 by soldering, and the other end is butted against a socket of an electric field generator (not shown). The periphery of the welding position of the lead 5 and the wiring part 113 of the flexible circuit board 11 of the electric functional assembly 1 is covered with a section of heat-shrinkable sleeve 51. The heat-shrinkable sleeve 51 performs insulation protection on the welding position of the wire 5 and the wiring part 113 of the flexible circuit board 11 of the electrical functional assembly 1, improves strength support, avoids the fracture of the connection position of the wire 5 and the wiring part 113 of the flexible circuit board 11 of the electrical functional assembly 1, and also can prevent dust and water.

The electrode patch 100 of the present invention may be covered with a release paper (not shown) on the outer side of the adhesive member (not shown) and the backing 2 to protect the adhesive member (not shown) and the backing 2. The adhesive member (not shown) and the backing 2 may be covered by only one sheet, or two or more sheets of release paper (not shown) may be covered together. When in use, the release paper (not shown) is torn off, and the electrode patch 100 is attached to the head of a human body.

According to the electrode patch 100, the plurality of moisture absorption elements are arranged between the electrode units so as to absorb and store sweat or water vapor generated on the body surface of the corresponding part of the electrode patch, which is applied to a patient, so that the skin problem caused by the sweat or the water vapor is avoided, and the comfort of the application of the electrode patch 100 is improved.

The present invention is not limited to the above preferred embodiments, but rather should be construed as broadly within the spirit and scope of the utility model as defined in the appended claims.

Claims

1. An electrode patch, comprising:

a back lining (2) which is provided with a back lining,

an electrical functional assembly (1) adhered to the backing (2) and comprising a plurality of electrode units (10);

a plurality of moisture-absorbing elements (4) adhered to the backing (2) and positioned between the plurality of electrode units (10).

2. The electrode patch as claimed in claim 1, further comprising a support member (3) adhered to the backing (2) and surrounding the electrode unit (10), the support member (3) being provided with a plurality of first through holes (31) surrounding the electrode unit (10) and a plurality of second through holes (32) receiving the moisture absorbing member (4).

3. The electrode patch as claimed in claim 1, wherein the moisture absorbing member (4) is aligned up and down or left and right with the adjacent electrode unit (10).

4. The electrode patch as claimed in claim 1, wherein the shape and size of the hygroscopic element (4) are identical to those of the electrode unit (10).

5. The electrode patch as claimed in claim 2, wherein the hygroscopic element (4) has a thickness greater than the thickness of the support (3).

6. Electrode patch according to claim 2, characterized in that a lead (5) is provided which is electrically connected to the electrical functional component (1), the support (3) being provided with a complete footprint (33) in its area directly above the connection of the lead (5) to the electrical functional component (1).

7. The electrode patch as claimed in claim 1, wherein the electrode units (10) are arranged in a plurality of rows and columns, and the moisture absorbing elements (4) are arranged in a stripe shape between two adjacent columns of electrode units (10).

8. The electrode patch according to claim 1, wherein the electrical functional assembly (1) comprises a flexible circuit board (11) and a plurality of insulating plates (12) and a plurality of dielectric elements (13) disposed on opposite sides of the flexible circuit board (11), the dielectric elements (13), the insulating plates (12) and corresponding portions of the flexible circuit board (11) corresponding to the dielectric elements (13) together constituting the electrode unit (10).

9. An electrode patch as claimed in claim 8, characterised in that the flexible circuit board (11) is provided with a conductive disc (114) on its side remote from the backing (2) which is soldered to the dielectric element (13).

10. The electrode patch as claimed in claim 9, wherein the dielectric element (13) and the corresponding portion of the corresponding flexible circuit board (11) are arranged in a substantially disc shape, the dielectric element (13) has an outer diameter smaller than the diameter of the corresponding portion of the corresponding flexible circuit board (11), and the dielectric element (13) is capable of covering the conductive disc (114).