Tumor electric field therapeutic apparatus and electrode patch thereof

Abstract

The utility model provides a tumor electric field therapeutic apparatus and an electrode patch thereof, the electrode patch comprises a backing, an electrode array pasted on the backing and a pasting piece pasted on the electrode array, the electrode array comprises a plurality of electrode units arranged at intervals and a plurality of connecting parts connecting two adjacent electrode units, the plurality of connecting parts comprise a first connecting part and a plurality of second connecting parts, wherein the first connecting part is located between two adjacent electrode units and enables the positions of the two electrode units to be relatively fixed, and the second connecting parts are located between two adjacent electrode units and enable the positions of the two electrode units to be relatively adjustable. According to the tumor electric field therapeutic apparatus and the electrode patch thereof, the second connecting part capable of enabling the positions of the two connected electrode units to be relatively adjustable is adopted, so that the application part of the corresponding electrode unit can be properly adjusted according to the body surface condition of a patient, and the application property of the electrode patch is improved; and meanwhile, the second connecting parts have deformation capability, so that the pulling force between the electrode units can be relieved, and the reliability of the conductive traces embedded in the second connecting parts can be ensured.

Description

Technical Field

[0001] The present application relates to a tumor electric field therapy device and an electrode patch 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. Tumor electric field therapy devices usually include an electric field generator, an adapter, and multiple pairs of electrode patches. The electric field generator generates an alternating electric signal 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 current signal is applied between each pair of electrode patches to non-invasively apply the tumor treatment electric field to the target area.

[0003] The existing electrode patch, as disclosed in Chinese invention patent No. 112717272, is provided with a plurality of electrode units, a connection portion connecting adjacent electrode units, and a wiring portion extending outward from one of the connection portions. Such electrode units use a ceramic sheet as a dielectric sheet, and the ceramic dielectric sheet has a certain thickness and is arranged in an array, resulting in the electrode patch being unable to be well applied to the uneven and diverse skin surface of the patient; in addition, the connection portion of the electrode patch is embedded with a conductive trace electrically connected to each ceramic dielectric sheet, and the connection portion is arranged in a straight line, resulting in the positions of the two electrode units connected thereto being relatively fixed, not only being unable to properly adjust the application position of each electrode unit according to the patient's skin condition, but also being unable to relieve the pulling force between the electrode units due to the connection portion not having the ability to deform, resulting in the conductive trace embedded in the connection portion being broken, thereby causing the electrode unit to be unable to receive signals from the electric field generator.

[0004] Therefore, it is necessary to improve the existing tumor electric field therapy device and its electrode patch. Utility Model Content

[0005] The present application provides a tumor electric field therapy device and an electrode patch thereof, wherein the positions between the electrode units can be adjusted and the device can be easily applied to various skin surfaces.

[0006] Specifically, the present application is implemented through the following technical solutions: an electrode patch, comprising a backing, an electrode array attached to the backing, and an adhesive attached to the electrode array, the electrode array comprising a plurality of electrode units arranged at intervals and a plurality of connecting portions connecting two adjacent electrode units, the plurality of connecting portions comprising a first connecting portion located between two adjacent electrode units and making the positions of the two electrode units relatively fixed, and a plurality of second connecting portions located between two adjacent electrode units and making the positions of the two electrode units relatively adjustable.

[0007] Furthermore, the first connecting portion is disposed transversely between two adjacent electrode units, and the second connecting portion is disposed longitudinally between two adjacent electrode units.

[0008] Furthermore, the electrode array also includes an open space formed between the electrode units arranged at intervals, and the open space includes a first interval for accommodating the first connecting portion and a second interval for accommodating the second connecting portion.

[0009] Furthermore, one end of the second connection portion is close to the first interval, and the other end is far from the first interval.

[0010] Furthermore, the first connecting portion is arranged in a straight line, and the second connecting portion is arranged in an S shape.

[0011] Furthermore, the second connection portion is arranged in a transversely inclined S-shape, with one end close to the first interval and the other end away from the first interval.

[0012] Furthermore, the electrode units are arranged in a nearly triangular, trapezoidal or fan-shaped shape.

[0013] Furthermore, the outer contour of the electrode array is arranged in a water drop shape.

[0014] Furthermore, two ends of the second connecting portion are respectively connected to two adjacent electrode units and are correspondingly arranged in the longitudinal direction of the electrode array.

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

[0016] The tumor electric field therapy device and its electrode patch of the present application use a plurality of second connecting parts located between two adjacent electrode units so that the positions of the two adjacent electrode units can be relatively adjusted, so that the application sites of the corresponding electrode units can be appropriately adjusted according to the skin conditions of the patient's body surface. At the same time, the second connecting parts have the ability to deform to alleviate the pulling force between the electrode units to ensure the reliability of the conductive traces embedded in the second connecting parts.

[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 A schematic diagram of the framework of a tumor treatment electric field device according to one embodiment of the present application;

[0019] Figure 2 is a three-dimensional exploded schematic diagram of an electrode patch according to one embodiment of the present application;

[0020] Figure 3 for Figure 2 A three-dimensional schematic diagram of an electrode array of an electrode patch;

[0021] Figure 4 For along Figure 3 Cross-sectional view in the AA direction.

[0022] Description of reference numerals:

[0023] Electric field generator 10, adapter 20, electrode patch 30, backing 31, electrode array 32, connecting part 322, first connecting part 3221, second connecting part 3222, wiring part 323, adhesive 33, electrode unit 34, first electrode unit 34A, second electrode unit 34B, third electrode unit 34C, fourth electrode unit 34D, fifth electrode unit 34E, sixth electrode unit 34F, open space 340, first interval 3401, second interval 3402, first base part 32221, first conductive trace 32222, first insulating layer 32223, second conductive trace 32224, third conductive trace 32225, second insulating layer 32224. DETAILED DESCRIPTION

[0024] 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.

[0025] refer to Figure 1 As shown, the tumor electric field therapy device 100 includes an electric field generator 10, an adapter 20, and a plurality of electrode patches 30 arranged in pairs, and the adapter 20 electrically connects the electric field generator 10 and each electrode patch 30. The electric field generator 10 generates an alternating current signal that meets the treatment requirements, and the adapter 20 receives the alternating current signal output from the electric field generator 10 and transmits the alternating current signal to the electrode patch 30. The paired electrode patches 30 are attached to the body surface of the patient's corresponding tumor area, and the alternating current signal is applied to the patient's tumor area for tumor electric field therapy.

[0026] refer to Figure 2As shown, the electrode patch 30 includes a backing 31, an electrode array 32 attached to the front of the backing 31, and an adhesive 33 attached to the front of the electrode array 32, wherein the front of the backing 31, the electrode array 32 and the adhesive 33 is the side facing the patient's skin, and the electrode patch 30 is applied with its front side facing the patient. The backing 31 is arranged in a sheet shape, and a biocompatible adhesive (not shown) is coated on the side facing the patient's body surface, which is used to closely fit the backing 31 to the body surface corresponding to the patient's tumor site. The backing 31 is usually made of breathable materials such as textiles, non-woven fabrics and microporous membranes with soft, light, moisture-proof and breathable properties, so that it can keep the patient's skin surface dry when it is applied to the patient's body surface for a long time. The electrode array 32 includes a plurality of electrode units 34 arranged at intervals, a plurality of connecting parts 322 connecting two adjacent electrode units 34, and a wiring part 323 extending outward from one of the connecting parts 322. The connection portion 323 is welded to a wire (not shown), and the wire (not shown) is used to electrically connect the electrode array 32 to the adapter 20 . The adapter 20 is electrically connected to the electric field generator 10 to achieve signal transmission between the electrode array 32 and the electric field generator 10 .

[0027] Some electrode units 34 are also provided with a temperature sensor (not shown) located at the center thereof and capable of monitoring and feeding back the temperature of the body surface where the electrode unit 34 is applied. The temperature sensor (not shown) can constantly monitor the temperature of the body surface where the corresponding electrode unit 34 is applied, so as to prevent the electrode unit 34 from causing low-temperature burns to the patient's skin due to heat accumulation during the tumor electric field therapy. The adhesive 33 is in the form of a double-sided adhesive sheet, one side of the adhesive 33 is attached to the electrode array 32, and the other side is applied to the patient's skin as an application layer, so that the electrode array 32 can be well attached to the patient's body surface and the patient's skin surface can be kept moist. The adhesive 33 is preferably a conductive adhesive to act as a conductive medium. Specifically, the adhesive 33 can be a conductive hydrogel.

[0028] refer to Figure 3 and Figure 4 As shown, the overall outline of the electrode array 32 is roughly in the shape of a water drop with a small top and a large bottom. Its area is smaller than that of the conventional electrode array (e.g., a 3*3 rectangle) disclosed in Chinese invention patent No. CN112717272 and is more suitable for attachment to uneven parts of the body surface, such as the head, limbs, or both sides of the trunk. When attached to the head, the electrode array 32 is attached in a manner in which its smaller upper part is close to the top of the head and its larger lower part is away from the top of the head. Correspondingly, the overall outline of the backing 31 is basically the same as the overall outline of the electrode array 32, but its size is larger than the outline size of the electrode array 32; the adhesive member 33 is also basically the same as the overall outline of the electrode array 32, and its size is slightly larger than the outline size of the electrode array 32 but smaller than the outline size of the backing 31.

[0029] The electrode array 32 includes six electrode units 34, which are divided into a left part and a right part that are spaced apart and symmetrical on the left and right sides. The outlines of the left part and the right part are both roughly half a water drop shape, and together form the overall water drop shape outline of the electrode array 32. The left part includes a first electrode unit 34A, a second electrode unit 34B, and a third electrode unit 34C spaced apart from top to bottom, and the right part includes a fourth electrode unit 34D, a fifth electrode unit 34E, and a sixth electrode unit 34F spaced apart from top to bottom. The first electrode unit 34A and the fourth electrode unit 34D are spaced apart on the left and right sides, the second electrode unit 34B and the fifth electrode unit 34E are spaced apart on the left and right sides, and the third electrode unit 34C and the sixth electrode unit 34F are spaced apart on the left and right sides.

[0030] The plurality of connection parts 322 include a first connection part 3221 and a plurality of second connection parts 3222. The first connection part 3221 is located between the left part and the right part and realizes the connection of the left part and the right part in the horizontal direction by connecting the second electrode unit 34B and the fifth electrode unit 34E. The wiring part 323 extends downward from the first connection part 3221 in a direction away from the first electrode unit 34A. The plurality of second connection parts 3222 respectively longitudinally connect two electrode units 34 adjacent in the left and right parts. Specifically, there are four second connection parts 3222, which respectively connect the first electrode unit 34A and the second electrode unit 34B, the second electrode unit 34B and the third electrode unit 34C, the fourth electrode unit 34D and the fifth electrode unit 34E, and the fifth electrode unit 34E and the sixth electrode unit 34F.

[0031] Each electrode unit 34 is arranged in a sheet shape, wherein the left-right symmetrical first electrode unit 34A and the fourth electrode unit 34D are arranged roughly in a triangular shape, the left-right symmetrical second electrode unit 34B and the fifth electrode unit 34E are arranged roughly in a trapezoidal shape, and the left-right symmetrical third electrode unit 34C and the sixth electrode unit 34F are arranged roughly in a fan shape. The inner sides of the first electrode unit 34A, the second electrode unit 34B and the third electrode unit 34C, which are close to the central axis of the electrode array 32, are located on the same vertical line, and the outer sides of the first electrode unit 34A, the second electrode unit 34B and the third electrode unit 34C, which are close to the central axis of the electrode array 32, are located on the left side single-side outer contour of the electrode array 32. The inner sides of the fourth electrode unit 34D, the fifth electrode unit 34E and the sixth electrode unit 34F, which are close to the central axis of the electrode array 32, are located on the same vertical line, and the outer sides of the fourth electrode unit 34D, the fifth electrode unit 34E and the sixth electrode unit 34F, which are close to the central axis of the electrode array 32, are located on the right side single-side outer contour of the electrode array 32. The four electrode units 34, namely the first electrode unit 34A and the third electrode unit 34C on the left side and the fourth electrode unit 34D and the sixth electrode unit 34F on the right side, are each provided with a temperature sensor (not shown).

[0032] The first electrode unit 34A, the second electrode unit 34B and the third electrode unit 34C are arranged in three different shapes, and the area of ​​the second electrode unit 34B arranged in a nearly trapezoidal shape is larger than the area of ​​the first electrode unit 34A arranged in a nearly triangular shape but smaller than the area of ​​the third electrode unit 34C arranged in a nearly fan-shaped shape; similarly, the area of ​​the fifth electrode unit 34E arranged in a nearly trapezoidal shape is larger than the area of ​​the fourth electrode unit 34D arranged in a nearly triangular shape but smaller than the area of ​​the sixth electrode unit 34F arranged in a nearly fan-shaped shape. The arrangement of the electrode units 34 of the electrode array 32 in different areas can make the electrode array 32 better adapt to the attachment requirements of different positions on the patient's body surface, especially suitable for tumor electric field treatment in areas such as the head with a small attachment area and few flat areas.

[0033] The electrode array 32 forms an open space 340 between each electrode unit 34. Specifically, the open space 340 includes a first interval 3401 located between the left part and the right part, and the first connecting portion 3221 is located in the first interval 3401; some open spaces 340 also include a second interval 3402 located between two adjacent electrode units 34 in the left and right parts. The second interval 3402 is specifically located between the first electrode unit 34A and the second electrode unit 34B, between the second electrode unit 34B and the third electrode unit 34C, between the fourth electrode unit 34D and the fifth electrode unit 34E, and between the fifth electrode unit 34E and the sixth electrode unit 34F. Each second connecting portion 3222 is respectively located in the corresponding second interval 3402. The open space 340 can provide a heat dissipation channel when the electrode array 32 is attached to the patient's body surface and electric field therapy is applied, and can also leave breathing space for the body surface skin to which the electrode array 32 is attached to reduce the discomfort of application.

[0034] The second connection portion 3222 is arranged in a transverse S-shape, and its two ends are connected to two adjacent electrode units 34 in an oblique extending manner. One end of the second connection portion 3222 is far away from the first interval 3401, and the other end is close to the first interval 3401. Specifically, the ends of the two second connection portions 3222 located on the left side connected to the second electrode unit 34B are close to the first interval 3401, and the other ends connected to the first electrode unit 34A or the third electrode unit 34C are far away from the first interval 3401. The ends of the two second connection portions 3222 located on the right side connected to the fifth electrode unit 34E are close to the first interval 3401, and the other ends connected to the fourth electrode unit 34D or the sixth electrode unit 34F are far away from the first interval 3401. The relative positions of the second electrode unit 34B and the fourth electrode unit 34E connected to the first connecting portion 3221 are basically fixed, but the four second connecting portions 3222 arranged in a transverse S shape all have a certain degree of expansion and contraction deformation ability, so that the first electrode unit 34A and the third electrode unit 34C electrically connected thereto can have a certain degree of expansion and contraction in the four directions of up, down, left and right relative to the second electrode unit 34B, and the fourth electrode unit 34D and the sixth electrode unit 34F electrically connected thereto can have a certain degree of expansion and contraction in the four directions of up, down, left and right relative to the fifth electrode unit 34E, so that when the electrode array 32 is applied, the application positions of the first electrode unit 34A, the third electrode unit 34C, the fourth electrode unit 34D and the sixth electrode unit 34F can have a certain degree of free adjustment space to avoid the patient's inappropriate application parts, and at the same time, the size of the open space 340 formed between the electrode units 34 can be adjusted within a certain range to facilitate heat dissipation and further avoid skin allergies caused by long-term tumor treatment.

[0035] In another embodiment, the second connection portion 3222 may be arranged in a longitudinal S-shape, with its two ends respectively connecting two adjacent electrode units 34 in a longitudinally extending manner, that is, the two ends of the second connection portion 3222 are respectively connected to two adjacent electrode units 34 and are correspondingly arranged in the longitudinal direction of the electrode array 32.

[0036] The second connection part 3222 includes a first base part 32221, a first conductive trace 32222 disposed on the front of the first base part 32221, a first insulating layer 32223 disposed on the first conductive trace 32222, a second conductive trace 32224 and a third conductive trace 32225 disposed on the back of the first base part 32221 and spaced from each other, and a second insulating layer 32226 covering the second conductive trace 32224 and the third conductive trace 32225. The first conductive trace 32222, the second conductive trace 32224 and the third conductive trace 32225 are respectively electrically connected to corresponding components on the electrode unit 34 connected thereto. The first insulating layer 32223 and the second insulating layer 32226 can protect the first conductive trace 32222, the second conductive trace 32224 and the third conductive trace 32225 from being exposed to the outside, thereby avoiding potential safety hazards.

[0037] When the electrode patch 30 is applied, since the first electrode unit 34A, the third electrode unit 34C, the fourth electrode unit 34D and the sixth electrode unit 34F all have a certain degree of freedom, the edges of each electrode unit 34 will not be loosely applied due to the inadequate application of the second connecting portion 3222, thereby increasing the impedance of the application surface or even falling off. At the same time, the influence of a slight displacement of one electrode unit 34 on the application of other electrode units 34 can be reduced. The second connecting portion 3222 is arranged in a transverse S shape, and its length can be increased to improve the utilization rate within the corresponding second interval 3402, and the tensile strength of the second connecting portion 3222 can be enhanced to ensure that the first conductive trace 32222, the second conductive trace 32224 and the third conductive trace 32225 arranged thereon will not be broken due to the expansion and contraction of the second connecting portion 3222, resulting in electrical connection failure. The electrode array 32 uses the first connecting portion 3221 connecting the second electrode unit 34B and the fifth electrode unit 34E as the main trunk, and uses several S-shaped second connecting portions 3222 connecting two adjacent electrode units 34 in the left part and the right part respectively as the secondary trunks, thereby forming a structure in which the electrode array 32 has four free ends, the horizontal trunks are connected and the vertical layout is formed, and the first electrode unit 34A, the third electrode unit 34C, the fourth electrode unit 34D and the sixth electrode unit 34F are located at the two ends of the vertical direction.

[0038] 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, an electrode array attached to the backing, and an adhesive attached to the electrode array, wherein the electrode array comprises a plurality of electrode units arranged at intervals and a plurality of connecting portions connecting two adjacent electrode units, characterized in that: The plurality of connection parts include a first connection part located between two adjacent electrode units and making the positions of the two electrode units relatively fixed, and a plurality of second connection parts located between two adjacent electrode units and making the positions of the two electrode units relatively adjustable.

2. The electrode patch according to claim 1, characterized in that: The first connecting portion is disposed transversely between two adjacent electrode units, and the second connecting portion is disposed longitudinally between two adjacent electrode units.

3. The electrode patch according to claim 2, characterized in that: The electrode array further includes an open space formed between the electrode units arranged at intervals, wherein the open space includes a first interval for accommodating the first connecting portion and a second interval for accommodating the second connecting portion.

4. The electrode patch according to claim 3, characterized in that: One end of the second connection portion is close to the first interval, and the other end is far from the first interval.

5. The electrode patch according to claim 4, characterized in that: The first connection portion is arranged in a straight line, and the second connection portion is arranged in an S shape.

6. The electrode patch according to claim 5, characterized in that: The second connecting portion is arranged in a transversely inclined S-shape, with one end thereof being close to the first interval and the other end being far away from the first interval.

7. The electrode patch according to claim 5, characterized in that: The electrode units are arranged in a nearly triangular, trapezoidal or fan-shaped shape.

8. The electrode patch according to claim 2, characterized in that: The outer contour of the electrode array is arranged in a water drop shape.

9. The electrode patch according to claim 2, characterized in that: Two ends of the second connecting portion are respectively connected to two adjacent electrode units and are correspondingly arranged in the longitudinal direction of the electrode array.

10. A tumor electric field therapeutic apparatus, 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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