CN216571209U - Tumor electric field treatment system and electrode patch thereof - Google Patents

Abstract

The utility model provides a tumor electric field treatment system and an electrode patch thereof, which are used for tumor electric field treatment. The electrode patch provided by the utility model applies an alternating electric field to a tumor part of a human body by a single electrode unit for tumor electric field treatment, can be easily replaced when the electrode patch cannot normally work, and does not need to scrap the electrode patch containing a plurality of dielectric elements, so that the cost is reduced, and unnecessary waste is avoided.

Description

Tumor electric field treatment system and electrode patch thereof

Technical Field

The utility model relates to an electric field tumor treatment system and an electrode patch thereof, belonging 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 use of electric fields to treat tumors is also one of the leading lines of research and development, and electric field therapy of tumors is a method of tumor treatment by interfering with the mitotic progression of cancer cells using low-intensity, medium-high frequency alternating electric fields. 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 treatment method can influence the aggregation of tubulin of dividing cancer cells, prevent the formation of spindles of the dividing cancer cells, inhibit the mitotic process of the cancer cells and induce the apoptosis of the cancer cells.

The existing electrode patch for electric field therapy of tumor, as disclosed in chinese utility model publication No. 112717272, includes a non-woven fabric and an electrical functional component adhered on the non-woven fabric. The electrical functional component is approximately in a shape like a Chinese character 'wang', and comprises a flexible circuit board, nine ceramic plates welded on the flexible circuit board and arranged at intervals, nine temperature sensors welded on the flexible circuit board and a lead electrically connected with the flexible circuit board. The middle part of the ceramic plate is provided with a through hole for accommodating the temperature sensor. The temperature sensor and the ceramic plate are positioned on the same side of the flexible circuit board. The temperature sensor is accommodated in the through hole of the ceramic plate after being welded on the flexible circuit board. The temperature sensor has a signal terminal and a ground terminal. Nine annular conductive discs and nine pairs of bonding pads which are in one-to-one correspondence with the ceramic plates are arranged on the flexible circuit board. The ceramic plate is electrically connected with the flexible circuit board by welding with the annular conductive disc. Each pair of bonding pads is surrounded by a corresponding annular conductive disc and is respectively connected with a signal end and a grounding end of a temperature sensor. The temperature sensor is electrically connected with the flexible circuit board through the signal end of the temperature sensor welded with one bonding pad in each pair of bonding pads and the grounding end welded with the other bonding pad in each pair of bonding pads.

The flexible circuit board is composed of an insulating base body and eleven conductive traces embedded in the insulating base body. One of the eleven conductive traces is electrically connected with the nine annular conductive discs respectively so as to connect the nine conductive discs in series, and further connect the nine ceramic plates in series when the nine ceramic plates are welded on the flexible circuit board through the corresponding conductive discs. And the other of the eleven conductive traces is electrically connected with the bonding pad which is welded with the grounding end of the temperature sensor in each pair of bonding pads so as to connect all the bonding pads which are connected with the grounding end of the temperature sensor in series, and further connect the grounding ends of the temperature sensor in series when the temperature sensor is welded on the flexible circuit board. And the rest of the eleven conductive traces are respectively and electrically connected with the corresponding pad which is welded with the signal end of the temperature sensor in each pair of pads, so that the signal ends of the temperature sensors are connected in parallel when the temperature sensors are welded on the flexible circuit board. The electrode patch connects all the ceramic plates together in series through a trace line electrically connected with the ceramic plates by the flexible circuit board so as to transmit electric signals to all the ceramic plates simultaneously, thereby realizing the application of an alternating electric field to the tumor part of a patient for tumor electric field treatment; meanwhile, the detection signals of the temperature sensors are transmitted in parallel through the flexible circuit board and the multi-path traces which are electrically connected with the signal ends of the temperature sensors respectively, so that the body surface temperature of the patient at the corresponding part of each temperature sensor can be monitored timely and efficiently, and low-temperature scalding is avoided.

Although the electrode patch realizes the purposes of applying an alternating electric field to a tumor part of a patient and detecting the body surface temperature of the patient through the flexible circuit board, the ceramic sheets welded on the flexible circuit board and the temperature sensors, the flexible circuit board needs to be provided with 11 paths of conducting traces on an insulating substrate so as to ensure that the signal end of each temperature sensor is provided with one independent conducting trace for signal transmission and realize the temperature monitoring of the corresponding part, so that the flexible circuit board has a complex structure, increased difficulty in wiring design and increased manufacturing cost; the nine ceramic plates are welded on the flexible circuit board through the corresponding conductive plates, but all the conductive plates carry out electric signal transmission through the same conductive trace of the flexible circuit board, so that the problems that the conductive trace of the flexible circuit board is broken or a certain ceramic plate is not well welded, so that the electric signal cannot be transmitted to the ceramic plates, the electrode patch is unqualified to detect and scrap, the electrode patch cannot be used, the product manufacturing yield is low, and the manufacturing cost is increased exist; in addition, since the conductive pads on the flexible circuit board are all connected in series through one conductive trace, the flexible circuit board needs to be electrically detected before the ceramic sheet is welded to the flexible circuit board, and the flexible circuit board needs to be electrically detected again after the ceramic sheet is welded to the flexible circuit board, so that the process is complicated and the efficiency is low. In addition, the welding fracture of the ceramic wafer occurs in the use process of the electrode patch, so that an electric signal cannot be applied to a tumor part of a patient through the ceramic wafer, the electric field intensity of tumor electric field treatment is insufficient, the effect of the tumor electric field treatment is influenced, or the ceramic wafer cannot be discarded and cannot be processed, so that the cost is wasted; the problem that the electrode patch needs to be replaced due to the fact that an electric signal cannot be transmitted to the ceramic chip caused by the fact that a conducting trace of the flexible circuit board connected with the ceramic chip in series is broken exists; the problem that the temperature sensor cannot accurately detect the body surface temperature of the tumor part of the corresponding patient due to the fact that a conducting trace connected with the signal end of the flexible circuit board and the temperature sensor is broken exists, and low-temperature scalding exists.

Therefore, there is a need to provide an improved electrode patch and an improved electric field therapy system for tumors, which overcome the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides an electrode patch and a tumor electric field treatment system which are low in design difficulty, simple in structure, easy to manufacture and capable of being manufactured at low cost.

The electrode patch is realized by the following technical scheme: the utility model provides an electrode patch for tumour electric field treatment, includes single electrode unit, by electrode unit lateral extension set up the wiring portion and with wiring portion welded wire, electrode unit include with wiring portion electric connection's a dielectric element and a plurality of temperature sensor, temperature sensor's quantity is n, and n is for being greater than 1 and being not more than 8 integer, wire one end is connected with wiring portion, and the other end is equipped with the plug.

Furthermore, the wire connecting part is provided with an insulating substrate and a plurality of golden fingers exposing the insulating substrate, the number of the golden fingers is n +2, and the wires are welded with the n +2 golden fingers.

Furthermore, one end of each of the plurality of gold fingers is electrically connected with the dielectric element and the plurality of temperature sensors, and the other end of each of the plurality of gold fingers is welded with the corresponding part of the lead.

Furthermore, each temperature sensor is provided with a grounding end and a signal end, one of the plurality of golden fingers is electrically connected with the dielectric element, one golden finger is electrically connected with the grounding ends of the n temperature sensors, and the rest n golden fingers are respectively electrically connected with the signal ends of the corresponding temperature sensors.

Furthermore, the number of the temperature sensors is 2, and the number of the golden fingers is 4.

Furthermore, a heat-shrinkable sleeve is arranged at the joint of the lead and the wiring part.

Further, the electrode unit further comprises a main body portion, and the dielectric element and the plurality of temperature sensors are both arranged on the main body portion.

Further, the wire connecting portion is laterally extended from the main body portion.

Further, the main body part is provided with a conductive disc welded with the dielectric element.

Furthermore, the conductive disc comprises a plurality of conductive cores arranged at intervals, and the conductive cores are electrically connected with the same golden finger.

Furthermore, the main body part is also provided with n pairs of welding pads which are respectively welded with the n temperature sensors, and each pair of welding pads is positioned between the two corresponding conducting cores which are arranged at intervals.

Further, one pad of each pair of pads is soldered to the ground terminal of the corresponding temperature sensor, and the other pad is soldered to the signal terminal of the corresponding temperature sensor.

Furthermore, the plurality of conductive cores are arranged in an array of two rows and two columns, two pairs of bonding pads are arranged, and each pair of bonding pads is positioned between two corresponding conductive cores in the same row.

Furthermore, the dielectric element is provided with a through hole which is arranged corresponding to the temperature sensor, and the temperature sensor is accommodated in the corresponding through hole.

Furthermore, one end of the wire is electrically connected with the wiring part, and the other end of the wire is provided with a plug which is spliced with the electric field generator or the concentrator.

The tumor electric field treatment system is realized by the following technical scheme: an electric field tumor treating system comprises an electric field generator and the electrode patch electrically connected with the electric field generator.

Because the independent electrode unit is adopted to apply the alternating voltage to the tumor part of the patient, when the electrode patch cannot work normally, only the electrode patch with the independent electrode unit needs to be replaced, the whole electrode patch containing a plurality of electrode units does not need to be scrapped, and the cost of treating the tumor of the patient can be reduced. In addition, the electrode patches can be freely combined according to the size of the tumor part of the patient, so that the coverage area of the electrode patches for tumor electric field treatment is ensured, and the electric field treatment effect is ensured.

Drawings

Fig. 1 is a perspective combination view of an electrode patch according to a first embodiment of the electric field tumor therapy system of the present invention.

Fig. 2 is an exploded perspective view of the electrode patch of fig. 1.

Fig. 3 is an exploded perspective view of the electrical functional components and leads of the electrode patch of fig. 2.

Fig. 4 is a schematic plan view of the flexible circuit board of the electrode patch of fig. 3.

Fig. 5 is a plan view of a dielectric element of the electrode patch of fig. 3.

Fig. 6 is a front wiring diagram of the flexible circuit board of the electrical functional assembly of fig. 4.

Fig. 7 is a rear wiring diagram of the flexible circuit board of the electrical functional assembly of fig. 4.

Fig. 8 is a perspective combination view of an electrode patch of a second embodiment of the electric field tumor therapy system according to the present invention.

Description of reference numerals:

the electrode patch 100, 100', the electrical function component 1, the electrode unit 10, the flexible circuit board 11, the body portion 111, the wire connection portion 112, the gold finger 1120, the conductive pad 113, the conductive core 1130, the pad 114, the first pad 114A, the second pad 114B, the insulating plate 12, the dielectric element 13, the through hole 131, the metal layer 132, the temperature sensor 14, the backing 2, 2', the reentrant corner 21', the support member 3, the through hole 31, the sticker 4, the wire 5, the heat shrinkable sleeve 51, the plug 52, the insulating substrate B, the conductive trace L, the first conductive trace L1, the second conductive trace L2, the third conductive trace L3, L3', and the space C.

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 tumor electric field therapy system (not shown) comprises an electric field generator (not shown) and electrode patches 100, 100' connected to the electric field generator (not shown). The electrode patches 100 and 100' are applied to the skin surface of a human body, and a therapeutic electric field generated by an electric field generator (not shown) is applied to the human body to perform electric field therapy of tumors. When the electrode patches 100, 100 'sufficiently cover the tumor site, the electrode patches 100, 100' of the embodiments of the present invention may be used alone and directly connected to an electric field generator (not shown). In addition, a plurality of electrode patches 100 and 100 'according to the embodiment of the present invention may be used in combination, and the plurality of electrode patches 100 and 100' are connected to a hub (not shown) to perform electric field therapy of tumors at a tumor site.

Fig. 1 to 7 show an electrode patch 100 according to a first embodiment of the present invention. The electrode patch 100 includes a backing 2, an electrical functional component 1 adhered to the backing 2, a support member 3 adhered to the backing 2, an adhesive member 4 covering the support member 3 and a corresponding portion of the electrical functional component 1 and attached to a body surface skin corresponding to a tumor region of a patient, 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 the mitosis of cancer cells of the patient, thereby achieving the purpose of treating the tumor.

The electrical functional assembly 1 includes a single electrode unit 10 arranged in a square sheet shape and a wiring portion 112 connected to the electrode unit 10. The wiring portion 112 is welded to the lead 5, so as to electrically connect the electrical functional assembly 1 and the lead 5. A plurality of gold fingers 1120 are arranged on one side surface of the wire connecting portion 112. In this embodiment, the number of the gold fingers 1120 is four, and the four gold fingers 1120 are provided on the surface of the connection portion 112 facing the skin. The periphery of the welding position of the lead 5 and the gold finger 1120 of the wire connecting part 112 is covered with a heat-shrinkable sleeve 51. The heat-shrinkable sleeve 51 performs insulation protection on the connection part of the wire 5 and the wiring part 112 of the electrical functional assembly 1, provides support, prevents the connection part of the wire 5 and the wiring part 112 of the electrical functional assembly 1 from being broken, and is dustproof and waterproof. The end of the lead 5 away from the wire connection portion 112 is provided with a plug 52 electrically connected to an electric field generator (not shown) or a hub (not shown). One end of the lead 5 is electrically connected to the gold finger 1120 of the wire connection portion 112; the other end is electrically connected to an electric field generator (not shown) or a hub (not shown) through the plug 52, so as to provide the electrode patch 100 with an alternating current signal for tumor therapy during tumor electric field therapy.

The electrode unit 10 includes a main body 111, an insulating plate 12 provided on a side of the main body 111 away from the skin of the human body, a dielectric element 13 provided on a side of the main body 111 facing the skin of the human body, and two temperature sensors 14 provided on the main body 111 and located on the same side as the dielectric element 13. The main body 111, the insulating plate 12, and the dielectric element 13 have substantially the same shape, and are all of a square sheet structure. The main body 111, the insulating plate 12, and the dielectric element 13 are provided in correspondence with each other in the thickness direction of the main body 111, and the centers of the three are located on the same straight line. In the present embodiment, the main body 111, the insulating plate 12, and the dielectric element 13 are each a square sheet-like structure having corners arranged in an arc shape. Preferably, the main body 111 has a square sheet-like configuration with dimensions of about 32mm × 32 mm. The wire connection portion 112 of the electrical functional assembly 1 is extended laterally from the main body portion 111 of the electrode unit 10. In other embodiments, the main body 111 and the wire connecting portion 112 are arranged in a strip shape, and the width of the main body 111 is the same as the width of the wire connecting portion 112. It is also understood that the main body portion 111 is a portion extended from the wire connection portion 112.

The main body 111 is composed of an insulating substrate B and four conductive traces L embedded in the insulating substrate B. The four conductive traces are respectively a first conductive trace L1 arranged on one side of the insulating substrate B close to the dielectric element 13, a second conductive trace L2 arranged on one side of the insulating substrate B close to the insulating plate 12, and two third conductive traces L3 and L3' located on the same side as the second conductive trace L2. The main body 111 is centrally provided with a conductive pad 113 exposing the insulating substrate B and electrically connected to the first conductive trace L1. The conductive plate 113 may be welded to the dielectric member 13 to assemble the dielectric member 13 to the main body 111. The conductive pads 113 can be completely covered by the dielectric element 13 so that the conductive pads 113 and the dielectric element 13 are soldered by a solder (not shown). The conductive pad 113 is centered on the centerline of the body 111. The conductive pad 113 includes a plurality of conductive cores 1130 arranged in a central symmetry manner, which can effectively prevent the dielectric element 13 from being displaced due to stacking of solder (not shown) during the soldering process. The top surfaces of the conductive cores 1130 are located on the same plane, so that cold joint with the dielectric element 13 can be avoided. The plurality of conductive cores 1130 are each connected to a first conductive trace L1. The plurality of conductive cores 1130 are connected together in series by a first conductive trace L1.

In the present embodiment, the conductive pad 113 of the main body 111 has a substantially square configuration, and the symmetry axis thereof coincides with the symmetry axis of the main body 111. The conductive pad 113 includes 4 conductive cores 1130 at four corners and spaced apart. The conductive core 1130 is arranged in a multi-point interval mode, so that the using amount of copper foil for manufacturing the conductive core 1130 can be reduced; meanwhile, the amount of solder (not shown) used for welding the conductive core 1130 and the dielectric element 13 can be reduced, thereby reducing the manufacturing cost. Each of the conductive cores 1130 is of rectangular configuration having dimensions of about 9mm by 6 mm. Preferably, each of the conductive cores 1130 has a rectangular configuration with rounded corners. The longitudinal axis of each of the conductive cores 1130 is parallel to the extending direction of the wire connecting portion 112. In other embodiments, each conductive core 1130 of the conductive disc 113 may also be circular, square, or the like.

In this embodiment, the 4 conductive cores 1130 forming the conductive pad 113 are arranged in a matrix, and the 4 conductive cores 1130 are arranged in two rows and two columns. The gap between two columns of conductive cores 1130 is about 8.5mm and the gap between two rows of conductive cores 1130 is about 4 mm. The 4 conductive cores 1130 forming the conductive disc 113 are arranged in a centrosymmetric manner and an axisymmetric manner, and each conductive core 1130 is also arranged in an axisymmetric manner, so that when the 4 conductive cores 1130 of the main body portion 111 are welded with the dielectric element 13, the stress of each welding point is balanced, the overall welding balance of the dielectric element 13 is ensured, the welding quality is improved, and the problem that the welding part on the side with a larger interval between the dielectric element 13 and the main body portion 111 is easy to break due to weak strength of the welding part caused by the inclination of the dielectric element 13 due to the unbalanced welding stress is avoided; while also avoiding an impact on the degree of fit of the electrode patch 100. The 4 conductive cores 1130 of the conductive pad 113 are arranged at intervals, and an interval C is formed between two adjacent conductive cores 1130. The 4 spaces C are arranged in a substantially cross-shaped communication. The adjacent intervals C are arranged in a communicated manner. The extending direction of 2 of the 4 intervals C between two conductive cores 1130 in the same row is the same as the extending direction of the wire connecting portion 112.

The main body 111 is further provided with two pairs of pads 114 exposing the insulating substrate B, and the pads can be respectively welded to corresponding portions of the corresponding temperature sensors 14 to realize electrical connection between the temperature sensors 14 and the main body 111. Each pair of pads 114 is located between two corresponding spaced apart rows of conductive cores 1130. The two pairs of pads 114 are located in the extending direction of the wire connecting portion 112, each pair of pads 114 has a symmetry center, and the line connecting the two symmetry centers of the two pairs of pads 114 is parallel to the extending direction of the wire connecting portion 112. Each of the pairs of pads 114 includes a first pad 114A and a second pad 114B. The first pad 114A of each pair of pads 114 is electrically connected to the second conductive trace L2, one of the two second pads 114B is electrically connected to the third conductive trace L3, and the other is electrically connected to the third conductive trace L3'. Each temperature sensor 14 has a signal terminal (not shown) and a ground terminal (not shown). The first pads 114A are soldered to a ground terminal (not shown) of the temperature sensor 14, and the second pads 114B are soldered to a signal terminal (not shown) of the corresponding temperature sensor 14.

The insulating plate 12 is made of an insulating material. Preferably, the insulating plate 12 is an epoxy glass cloth laminate. The insulating plate 12 is adhered to the surface of the main body 111 away from the skin of the human body by a sealant (not shown), so that the strength of the main body 111 can be enhanced, a flat welding plane can be provided for the welding operation between the main body 111 and the dielectric element 13, and the product yield can be improved. Meanwhile, the insulating plate 12 can also isolate the moisture in the air on the side of the electrode patch 100 away from the skin from contacting the solder (not shown) between the main body 111 and the dielectric element 13, so as to prevent the moisture from eroding the solder (not shown) between the main body 111 and the dielectric element 13 and affecting the electrical connection between the main body 111 and the dielectric element 13.

The size of the insulating plate 12 is the same as that of the main body 111, so that when the insulating plate 12 is stuck to one side, far away from the human skin, of the main body 111 through a sealant (not shown), the sealant (not shown) climbs to one side, facing the human skin, of the main body 111 through a capillary effect, and the filling of the sealant (not shown) in a gap (not shown) formed by welding the dielectric element 13 and the main body 111 is affected, a cavity exists in the sealant (not shown), and further, the phenomenon that when the sealant (not shown) is cured at a high temperature, because the difference between the thermal expansion coefficients of water vapor in the cavity and the sealant (not shown) is large, the water vapor rapidly expands to cause bursting, popcorn is generated, and the product is damaged is avoided.

The dielectric element 13 is made of a high dielectric constant material, and has a conductive characteristic of blocking conduction of direct current and allowing passage of alternating current, so that safety of a human body can be guaranteed. Preferably, the dielectric element 13 is a dielectric ceramic sheet. The dielectric element 13 is provided with two through holes 131, the number of which is equal to the number of the temperature sensors 14, for receiving the corresponding temperature sensors 14 respectively. A metal layer 132 is attached to a surface of the dielectric element 13 facing the body 111. The metal layer 132 of the dielectric element 13 and the conductive core 1130 of the conductive pad 113 of the main body 111 are welded point to surface, so that high welding alignment precision is not required, and welding is more convenient. The inner edge of the metal layer 132 of the dielectric element 13 is spaced from the edge of the through hole 131 of the dielectric element 13, so that it is possible to prevent a solder (not shown) between the metal layer 132 of the dielectric element 13 and the main body 111 from diffusing in the direction of the through hole 131 of the dielectric element 13 when being melted by heat and causing a short circuit of the temperature sensor 14. The outer edge of the metal layer 132 of the dielectric element 13 is spaced from the outer edge of the dielectric element 13, so that it is possible to prevent the solder (not shown) between the metal layer 132 of the dielectric element 13 and the main body 111 from overflowing to the outside of the main body 111 when being melted by heat, and thus, when the electrode patch 100 is applied to the body surface of the tumor region of the patient, direct current that is not blocked by the dielectric element 13 passes through and acts on the body surface of the patient.

A gap (not shown) formed by welding the dielectric element 13 and the main body part 111 is filled with a sealant (not shown) to protect a soldering tin (not shown) between the dielectric element 13 and the main body part 111, so as to avoid the fracture of the welding position caused by the influence of an external force on the dielectric element 13, and further prevent an alternating electric field from being applied to a tumor part of a patient through the dielectric element 13; meanwhile, it is avoided that moisture in the air enters the gap (not shown) to corrode solder (not shown) between the dielectric element 13 and the main body 111, thereby affecting the electrical connection between the dielectric element 13 and the main body 111. The size of the dielectric element 13 is slightly smaller than that of the main body 111, so that when the sealant (not shown) is filled, the sealant (not shown) can be filled into the gap (not shown) along the edge of the main body 111 located outside the dielectric element 13 by capillary phenomenon, which is beneficial to filling the sealant (not shown) in the gap (not shown) formed by welding the dielectric element 13 and the main body 111. When the sealant (not shown) is filled in the gap (not shown) formed by welding the dielectric element 13 and the body 111, the air in the gap (not shown) can be discharged from the through hole 131 of the dielectric element 13, thereby preventing the sealant (not shown) filled in the gap (not shown) from generating a cavity and improving the product quality.

Each of the temperature sensors 14 is soldered to a first pad 114A provided on the main body portion 111 through a ground terminal (not shown) thereof and to a second pad 114B provided on the main body portion 111 through a signal terminal (not shown) thereof to achieve electrical connection with the main body portion 111. Since the two first pads 114A of the main body portion 111 are electrically connected to the second conductive trace L2, one of the two second pads 114B is electrically connected to the third conductive trace L3, and the other of the two second pads 114B is electrically connected to the third conductive trace L3 ', the two first pads 114A are respectively soldered to the corresponding ground terminals (not shown) of the two temperature sensors 14, and the two second pads 114B are respectively soldered to the corresponding signal terminals (not shown) of the two temperature sensors 14, the ground terminals (not shown) of the two temperature sensors 14 are both electrically connected to the second conductive trace L2 of the main body portion 111, and the signal terminals (not shown) of the two temperature sensors 14 are respectively electrically connected to the third conductive traces L3 and L3' of the main body portion 111. That is, the two temperature sensors 14 transmit their monitored temperature signals through the second conductive trace L2 and the third conductive traces L3, L3'. The two temperature sensors 14 are respectively accommodated in the corresponding through holes 131 of the dielectric element 13 after being soldered to the main body 111. Preferably, the temperature sensor 14 is a thermistor. The temperature sensor 14 is used for monitoring the temperature of the adhesive member 4 covering the side of the dielectric element 13 of the electrical functional assembly 1 facing the skin of the human body and further for detecting the temperature of the skin of the human body to which the adhesive member 4 is attached. When the temperature monitored by the temperature sensor 14 exceeds the upper limit of the human body safe temperature, the tumor electric field treatment system (not shown) can timely reduce or turn off the alternating voltage applied to the electrode patch 100 to avoid low-temperature scald of the human body. The two temperature sensors 14 are symmetrically arranged on the main body part 111, so that the temperature of the human skin corresponding to different positions can be detected, and the reliability of the detected data is ensured. The two temperature sensors 14 are soldered to the main body 111 through two pairs of soldering pads 114 of the main body 111 and then sealed with a sealant (not shown) to prevent moisture from attacking the temperature sensors 14 and causing the temperature sensors 14 to fail.

The wire connecting portion 112 has the same configuration as the main body portion 111, and also has a corresponding insulating substrate B and four conductive traces L embedded in the insulating substrate B. The four conductive traces L of the wire connection portion 112 are also electrically connected to the corresponding conductive traces L of the main body portion 111. The 4 gold fingers 1120 of the wire connecting portion 112 are exposed from a side of the insulating substrate B close to the dielectric element 13. The four conductive traces L of the wiring portion 112 are electrically connected to the gold fingers 1120, respectively. The four conductive traces L of the wire connection portion 112 are also the first conductive trace L1, the second conductive trace L2, and the third conductive traces L3, L3', respectively. The first conductive trace L1 of the wire connection portion 112 is extended from the first conductive trace L1 of the main body portion 111. The second conductive trace L2 of the wire connection portion 112 is provided extending from the second conductive trace L2 of the main body portion 111. The third conductive traces L3, L3 'of the wire connection portion 112 are extended from the corresponding third conductive traces L3, L3' of the main body portion 111, respectively.

The wire connecting portion 112 is connected to the first conductive trace L1 of the main body portion 111 through the first conductive trace L1 thereof, and the first conductive trace L1 of the main body portion 111 is connected to the conductive pad 113 on the main body portion 111 to electrically connect to the conductive pad 113 of the main body portion 111, and further electrically connect to the dielectric element 13 through the soldering between the conductive pad 113 of the main body portion 111 and the dielectric element 13. The wire connecting portion 112 is electrically connected to the first pad 114A of the main body portion 111 through the connection of the second conductive trace L2 and the second conductive trace L2 of the main body portion 111, the connection of the second conductive trace L2 of the main body portion 111 and the first pad 114A of the main body portion 111, and further electrically connected to the ground terminal (not shown) of the temperature sensor 14 through the welding of the first pad 114A and the ground terminal (not shown) of the temperature sensor 14. The wiring portion 112 is correspondingly connected to the third conductive traces L3 and L3 ' of the main body portion 111 through the third conductive traces L3 and L3 ', the third conductive traces L3 and L3 ' of the main body portion 111 are respectively connected to the two second pads 114B to electrically connect to the two second pads 114B on the main body portion 111, and the two second pads 114B and the signal terminals (not shown) of the two temperature sensors 14 are correspondingly welded to electrically connect to the signal terminals (not shown) of the two temperature sensors 14 one by one, so that the temperature signals monitored by the temperature sensors 14 are transmitted to the electric field generator (not shown) in parallel, so that the electric field generator (not shown) can timely and efficiently adjust the alternating voltage or alternating current applied to the dielectric element 13 to achieve the purpose of avoiding low-temperature scald caused by too high temperature.

The main body portion 111 and the wire connection portion 112 together constitute the flexible circuit board 11 of the electrical functional assembly 1. The insulating substrates B of the main body portion 111 and the wire connection portion 112 together constitute the insulating substrate B of the flexible circuit board 11. The conductive traces L of the main body portion 111 and the conductive traces L of the wire connection portion 112 constitute conductive traces L of the flexible circuit board 11 in one-to-one correspondence. The insulating substrate B of the flexible circuit board 11 can isolate moisture in the air around the electrode patch 100 from the solder (not shown) between the conductive pad 113 and the dielectric element 13, so as to prevent moisture in the air away from the skin from eroding the solder (not shown) between the conductive pad 113 disposed on the main body 111 of the flexible circuit board 11 and the dielectric element 13. The insulating substrate B of the flexible circuit board 11 and the insulating plate 12 perform a dual isolation function, which may extend the lifespan of the electrode patch 100.

From the perspective of forming the electrode unit 10, the insulating plate 12 is disposed on the side of the main body portion 111 of the flexible circuit board 11 away from the skin of the human body, the dielectric element 13 is disposed on the side of the main body portion 111 of the flexible circuit board 11 facing the skin of the human body, and the two temperature sensors 14 are disposed on the side of the main body portion 111 of the flexible circuit board 11 facing the skin of the human body. The insulating plate 12 and the dielectric element 13 are respectively provided on opposite sides of the main body 111 of the flexible circuit board 11. The first conductive trace L1 of the flexible circuit board 11 connects the 4 spaced conductive cores 1130 of the conductive pads 113 in series, the second conductive trace L2 is electrically connected to the ground terminals (not shown) of the two temperature sensors 14 through the two first pads 114A, and the third conductive traces L3 and L3' are electrically connected to the signal terminals (not shown) of the two temperature sensors 14 through the two second pads 114B, respectively. The first conductive trace L1 is located in a layer of the insulating substrate B adjacent to human skin. The second conductive trace L2 and the third conductive traces L3, L3' are all located within the insulating substrate B one layer adjacent to the insulating board 12. In order to facilitate the layout of the conductive traces L, the width of the wiring portion 112 is 7-9 mm. Preferably, the width of the wire connection portion 112 is 8 mm.

The gold fingers 1120 of the wire connecting portion 112, the 4 conductive cores 1130 of the conductive pads 113 and the soldering lands 114 are exposed from one side of the insulating substrate B of the flexible circuit board 11 close to the dielectric element 13. The gold finger 1120, the 4 conductive cores 1130 of the conductive pads 113 and the soldering pad 114 are all located on the side of the flexible circuit board 11 close to the body surface of the patient. One end of a gold finger 1120 of the wire connecting portion 112 is electrically connected to the dielectric element 13 through a first conductive trace L1 connected thereto, and the other end is welded to a corresponding portion of the lead 5, so as to transmit an alternating voltage signal generated by an electric field generator (not shown) to the dielectric element 13. One end of one of the other three gold fingers 1120 of the wire connecting portion 112 is electrically connected to a ground terminal (not shown) of the temperature sensor 14 through the second conductive trace L2 connected thereto, and one ends of the other two gold fingers 1120 are electrically connected to signal terminals (not shown) of the two temperature sensors 14 through the third conductive traces L3 and L3' connected thereto, respectively. The other ends of the three gold fingers 1120 of the wire connecting portion 112 are respectively soldered to corresponding portions of the wires 5, so that the relevant signals detected by the temperature sensor 14 are transmitted to the electric field generator (not shown) through the second conductive trace L2, the third conductive traces L3, L3' and the wires 5 in parallel.

The backing 2 is in the form of a sheet which is made primarily of a flexible, breathable, insulating material. The backing 2 is a mesh fabric. Specifically, the back lining 2 is a mesh non-woven fabric, has the characteristics of softness, lightness, thinness, moisture resistance and air permeability, and can keep the skin surface of a patient dry after being pasted on the body surface of the patient for a long time. The surface of the backing 2 facing the surface of the patient is further coated with a biocompatible adhesive (not shown) for closely adhering the backing 2 to the surface of the patient corresponding to the tumor site. In the present embodiment, the backing 2 is provided in a substantially octagonal sheet shape.

The support 3 is adhered to the backing 2 and surrounds the outside of the electrode unit 10. A through hole 31 is formed through the support 3 to receive the electrode unit 10. The support 3 may be made of a foam material. The support 3 is flush with the surface of the electrode unit 10 on the side remote from the backing 2. That is, the support member 3 is flush with the surface of the electrode unit 10 on the side facing the adhesive member 4 to support the adhesive member 4.

The adhesive member 4 has double-sided adhesive properties. One surface of the adhesive member 4 is adhered to the support member 3 and the surface of the electrode unit 10 on the side away from the backing 2. The other side of the pasting piece 4 is used as a pasting layer and is pasted on the skin of the surface of a human body to keep the skin surface moist and relieve local pressure. Preferably, the adhesive element 4 is an electrically conductive hydrogel to act as an electrically conductive medium. The adhesive member 4 has better application property with the skin of the human body under the supporting action of the supporting member 3.

Fig. 8 shows an electrode patch 100' according to another embodiment of the present invention, which is different from the electrode patch 100 according to the previous embodiment only in that the four corners of the backing 2' are inwardly recessed with recessed corners 21 '. The backing 2 is generally of a cross-shaped configuration. The reentrant corner 21' communicates with the outside and is arranged in an "L" shape. When the electrode patch 100 'is applied to the body surface corresponding to the tumor region of a patient, the concave angle 21' can prevent the corners of the backing 2 from being arched to cause wrinkles, and further prevent air from entering the space between the electrode unit 10 and the skin from the wrinkles to increase the impedance between the electrical functional component 1 and the skin, so that the electrical functional component 1 generates heat to increase and low-temperature scald is caused.

In the electrode patches 100 and 100 'of the present invention, since the individual electrode unit 10 is used to apply the alternating voltage to the tumor site of the patient, when the electrode patches cannot work normally, only the electrode patches 100 and 100' having the individual electrode unit 10 need to be replaced, and the whole electrode patch including a plurality of electrode units 10 does not need to be discarded, so that the cost of the tumor treatment of the patient can be reduced. In addition, the electrode patches 100 and 100 'of the present invention can be freely combined according to the size of the tumor site of the patient, thereby ensuring the coverage area of the electrode patches 100 and 100' for performing the electric field therapy of the tumor and ensuring the electric field therapy effect. Meanwhile, the flexible circuit board 11 of the electrode patches 100 and 100 'of the present invention is only provided with one first conductive trace L1 electrically connected to the dielectric element 13, one second conductive trace L2 electrically connected to the ground terminals (not shown) of the two temperature sensors 14, and two third conductive traces L3 and L3' electrically connected to the signal terminals (not shown) of the two temperature sensors 14, respectively, so as to transmit the alternating voltage signal of the electric field generator (not shown) to the dielectric element 13 through the first conductive trace L1, and achieve the purpose of applying an alternating voltage to the tumor region of the patient for tumor therapy; meanwhile, the second conductive trace line L2, the third conductive trace lines L3 and L3' are respectively and electrically connected with the two temperature sensors 14 to realize signal transmission between the electric field generator (not shown) and the two temperature sensors 14, and the electric field generator has the advantages of low wiring design difficulty, simple structure, simplified manufacturing process, easy manufacturing, high product manufacturing yield and capability of greatly reducing the manufacturing cost.

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 (15)

1. The utility model provides an electrode patch for tumour electric field treatment, characterized in that, including single electrode unit, by the wiring portion that electrode unit lateral extension set up and with wiring portion welded wire, electrode unit include with wiring portion electric connection's a dielectric element and a plurality of temperature sensor, temperature sensor's quantity is n, n is for being greater than 1 and being not more than 8 integer, wire one end is connected with wiring portion, and the other end is equipped with the plug.

2. The electrode patch as claimed in claim 1, wherein the wire connection portion has an insulating substrate and a plurality of gold fingers exposing the insulating substrate thereof, the number of the gold fingers is n +2, and the wire is soldered to the n +2 gold fingers.

3. The electrode patch as claimed in claim 2, wherein one end of each of the plurality of gold fingers is electrically connected to the corresponding dielectric element and the corresponding temperature sensor, and the other end of each of the plurality of gold fingers is soldered to the corresponding portion of the lead.

4. The electrode patch as claimed in claim 2, wherein each of the plurality of temperature sensors has a ground terminal and a signal terminal, one of the plurality of gold fingers is electrically connected to the dielectric element, one of the plurality of gold fingers is electrically connected to the ground terminals of the n temperature sensors, and the remaining n gold fingers are respectively electrically connected to the signal terminals of the corresponding temperature sensors.

5. The electrode patch as claimed in claim 2, wherein the number of the temperature sensors is 2 and the number of the gold fingers is 4.

6. The electrode patch as claimed in claim 1, wherein a heat shrinkable sleeve is provided at the junction of the lead wire and the terminal portion.

7. The electrode patch as claimed in claim 4, wherein the electrode unit further comprises a body portion, and the dielectric member and the plurality of temperature sensors are disposed on the body portion.

8. The electrode patch as claimed in claim 7, wherein the wire portion is provided extending laterally from the main body portion.

9. The electrode patch as claimed in claim 7, wherein the body portion is provided with a conductive disc welded to the dielectric member.

10. The electrode patch as claimed in claim 9, wherein the conductive disc comprises a plurality of conductive cores arranged at intervals, and the plurality of conductive cores are electrically connected with the same gold finger.

11. The electrode patch as claimed in claim 10, wherein the main body portion is provided with n pairs of pads to which the n temperature sensors are respectively soldered, each pair of pads being located between the corresponding two spaced apart conductive cores.

12. The electrode patch as claimed in claim 11, wherein one pad of each pair of pads is soldered to a ground terminal of the corresponding temperature sensor, and the other pad is soldered to a signal terminal of the corresponding temperature sensor.

13. The electrode patch as claimed in claim 11, wherein the plurality of conductive cores are arranged in an array of two rows and two columns, and two pairs of pads are provided, each pair of pads being located between two conductive cores in a corresponding same row.

14. The electrode patch as claimed in claim 1, wherein the dielectric member has a through hole disposed in correspondence with the temperature sensor, the temperature sensor being received in the corresponding through hole.

15. An electric field tumor treatment system comprising an electric field generator and an electrode patch according to any one of claims 1 to 14 electrically connected to the electric field generator.

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