DE202024103271U1 - Heat-generating electrode pad and physiotherapy device - Google Patents

Abstract

Heat generating electrode pad, characterized in that the pad comprises a PI film, a temperature control element, a first electrode, a second electrode and a third electrode; wherein the temperature control element comprises at least one PTC thermistor; wherein the first electrode serves for connection to a positive pole of a power supply, the second electrode for connection to a negative pole of the power supply and the third electrode for connection to an electrical signal interface;
wherein the temperature control element is attached to a first side of the PI film;
wherein the first side of the PI film forms a first conductor track and a second conductor track by etching, wherein one end of the first conductor track is connected to the temperature control element and the other end of the first conductor track is connected to the first electrode, while one end of the second conductor track is connected to the temperature control element and the other end of the second conductor track is connected to the second electrode, so that the first electrode, the temperature control element and the second electrode form a closed circuit;
wherein a second side of the PI foil forms an electrically conductive region by etching, which is connected to the third electrode.

Description

TECHNICAL AREA

Embodiments of the present application relate to the technical field of physiotherapy, specifically a heat-generating electrode pad and a physiotherapy device.

STATE OF THE ART

In the field of physical therapy, a heat-generating electrode pad is very popular thanks to its ability to promote blood circulation, relieve muscle pain and reduce inflammation through local heating.

A traditional heat-generating electrode pad has the disadvantages of uncontrolled amount of heat generated, too high temperature or wasted electrical energy. With the development of physical therapy technology, heat-generating electrode pads in which the amount of heat generated can be adaptively adjusted have appeared on the market. However, for heat-generating electrode pads in which automatic temperature control is possible, it is difficult to expect that it will fit the human body head due to the excessive thickness.

For this reason, it is an urgent technical problem to enable automatic temperature control while reducing the thickness of a heat-generating electrode pad.

CONTENT OF THIS APPLICATION

In view of the above problem, embodiments of the present application provide a heat generating electrode pad and a physiotherapy device to solve the problem of too large thickness of a heat generating electrode pad with automatically controllable temperature in the prior art.

According to one aspect of the embodiments of the present application, a heat-generating electrode pad is provided. The pad comprises a PI film, a temperature control element, a first electrode, a second electrode and a third electrode; wherein the temperature control element comprises at least one PTC thermistor; wherein the first electrode is for connecting to a positive pole of a power supply, the second electrode is for connecting to a negative pole of the power supply and the third electrode is for connecting to an electrical signal interface; wherein the temperature control element is attached to a first side of the PI film; wherein the first side of the PI film forms a first conductor track and a second conductor track by etching, wherein one end of the first conductor track is connected to the temperature control element and the other end of the first conductor track is connected to the first electrode, while one end of the second conductor track is connected to the temperature control element and the other end of the second conductor track is connected to the second electrode, so that the first electrode, the temperature control element and the second electrode form a closed circuit; wherein a second side of the PI foil forms an electrically conductive region by etching, which is connected to the third electrode.

In an optional possibility, it is provided that the heat-generating electrode pad further comprises a first layer and a second layer, wherein the first layer is arranged on the first layer of the PI film and covers the first conductor track, the second conductor track and the temperature control element; while the second layer is arranged on the second layer of the PI film and covers the electrically conductive region.

In an optional possibility, it is provided that the first electrode, the second electrode and the third electrode are each a button electrode, wherein an electrode plug-in part of the individual button electrode is located on a side of the first layer facing away from the first side of the PI film and an electrode lower part of the respective button electrode is located between the second layer and the second side of the PI film, wherein the electrode lower part passes through the PI film and the first layer and the other end of the electrode lower part is snapped onto the electrode plug-in part.

In an optional possibility, it is provided that the first side of the PI film further forms a first coil and a second coil by etching and the second side of the PI film further forms a third coil by etching; wherein the inner wall of the first coil is connected to the electrode lower part of the first electrode and the outer wall of the first coil is connected to the other end of the first conductor track, while the inner wall of the second coil is connected to the electrode lower part of the second electrode and the outer wall of the second coil is connected to the other end of the second conductor track, so that the first electrode, the temperature control element and the second electrode form a closed circuit; wherein the inner wall of the third coil is connected to the electrode lower part of the third electrode and the outer wall of the third coil is connected to the electrically conductive region.

In an optional possibility, it is provided that the first electrode, the second electrode and the third electrode are each an electrical wire; wherein one end of the first electrode is attached to the first side of the PI film and connected to the other end of the first conductor track, while the other end of the first electrode serves to connect to the positive pole of the power supply; wherein one end of the second electrode is attached to the first side of the PI film and connected to the other end of the second conductor track, while the other end of the second electrode serves to connect to the negative pole of the power supply; wherein one end of the third electrode is attached to the second side of the PI film and connected to the electrically conductive region, while the other end of the third electrode serves to connect to the electrical signal interface.

In an optional possibility, the shape and size of the first layer, the PI film and the second layer are the same.

In an optional possibility, the first layer is a substrate layer made of a flexible, thermally insulating material, while the second layer is a thin layer made of a gel material.

In an optional possibility, the flexible, thermally insulating material is silicone and the gel material is hydrogel.

In an optional possibility, the temperature control element is a PTC thermistor, or the temperature control element is several PTC thermistors connected in parallel.

According to another aspect of the embodiments of the present application, a physiotherapy device is provided. The physiotherapy device comprises a main unit and the heat-generating electrode pad according to any one of the above embodiments, wherein a power supply positive terminal interface of the main unit is connected to the first electrode of the heat-generating electrode pad and a power supply negative terminal interface of the main unit is connected to the second electrode of the heat-generating electrode pad to supply power to the heat-generating electrode pad; wherein a pulse interface of the main unit is connected to the third electrode of the heat-generating electrode pad to transmit a pulse signal to the third electrode.

In the embodiments of the present application, a heat generating circuit with automatic temperature controllable is obtained by connecting the PTC thermistor having a small thickness and the first conductor line and the second conductor line formed by etching the PI film. Thus, the structure realizing an automatic temperature control function and a heat generating function is thinly formed on the heat generating electrode pad; by forming the electrically conductive region on the second side of the PI film by etching, an electrical signal is transmitted to the skin of the human body via the electrically conductive region to achieve a physiotherapy function, so that the structure realizing the physiotherapy function is thinly formed on the heat generating electrode pad; By maintaining the heat-generating circuit with automatic temperature control on the first side of the PI film and forming the electrically conductive region on the second side of the PI film by etching, the automatic temperature control function, the heat-generating function and the physiotherapy function can be realized on a single PI film, thus reducing the overall thickness of the heat-generating electrode pad.

So far, the technical embodiments of the present application have been briefly described. In order to better understand the technical means of the embodiments of the application and to enable implementation in accordance with the content of the description, specific embodiments of the application are given below so that the above and other objects, features and advantages of the embodiments of the application can be better understood.

BRIEF DESCRIPTION OF THE DRAWINGS

• 1 eine Strukturansicht eines wärmeerzeugenden Elektrodenpads nach einem Ausführungsbeispiel der vorliegenden Anmeldung;
• 2 einen strukturellen Schaltplan eines Temperaturregelelements nach einem Ausführungsbeispiel der vorliegenden Anmeldung;
• 3 eine schematische Strukturansicht einer ersten Seite einer PI-Folie nach einem Ausführungsbeispiel der vorliegenden Anmeldung;
• 4 eine Explosionsansicht des wärmeerzeugenden Elektrodenpads nach dem Ausführungsbeispiel der vorliegenden Anmeldung;
• 5 eine Schnittansicht einer Knopfelektrode, die mit anderen Teilen zusammenpasst, in dem wärmeerzeugenden Elektrodenpad nach dem Ausführungsbeispiel der vorliegenden Anmeldung;
• 6 eine Strukturansicht der PI-Folie nach dem Ausführungsbeispiel der vorliegenden Anmeldung;
• 7 eine Strukturansicht eines Physiotherapiegeräts nach einem Ausführungsbeispiel der vorliegenden Anmeldung.

The accompanying drawings serve only to illustrate the embodiments and should not be considered as limiting the application. In all drawings, like reference numerals refer to like parts.

• 1 a structural view of a heat-generating electrode pad according to an embodiment of the present application;
• 2 a structural diagram of a temperature control element according to an embodiment of the present application;
• 3 a schematic structural view of a first side of a PI film according to an embodiment of the present application;
• 4 an exploded view of the heat generating electrode pad according to the embodiment of the present application;
• 5 a sectional view of a button electrode mating with other parts in the heat generating electrode pad according to the embodiment of the present application;
• 6 a structural view of the PI film according to the embodiment of the present application;
• 7 a structural view of a physiotherapy device according to an embodiment of the present application.

• 1. Physiotherapiegerät;
• 10. Wärmeerzeugendes Elektrodenpad;
• 110. PI-Folie; 11a. Erste Seite der PI-Folie; 11b. Zweite Seite der PI-Folie; 111. Erster Leiterbahn; 112. Zweiter Leiterbahn; 113. Elektrisch leitender Bereich; 114. Erste Spule; 115. Zweite Spule; 116. Dritte Spule;
• 120. Temperaturregelelement; 121. PTC-Thermistor; 122-124. Mehrere PTC-Thermistoren;
• 130. Erste Elektrode; 140. Zweite Elektrode; 150. Dritte Elektrode; 160. Erste Schicht; 170. Zweite Schicht;
• 180. Knopfelektrode; 181. Elektroden-Steckteil; 182. Elektroden-Unterteil;
• 20. Haupteinheit; 21. Stromversorgung-Pluspolschnittstelle; 22. Stromversorgung-Minuspolschnittstelle; 23. Impulsschnittstelle.

Reference symbols in the specific embodiments:

• 1. physiotherapy device;
• 10. Heat generating electrode pad;
• 110. PI foil; 11a. First side of the PI foil; 11b. Second side of the PI foil; 111. First conductor track; 112. Second conductor track; 113. Electrically conductive area; 114. First coil; 115. Second coil; 116. Third coil;
• 120. Temperature control element; 121. PTC thermistor; 122-124. Multiple PTC thermistors;
• 130. First electrode; 140. Second electrode; 150. Third electrode; 160. First layer; 170. Second layer;
• 180. Button electrode; 181. Electrode plug-in part; 182. Electrode lower part;
• 20. Main unit; 21. Power supply positive pole interface; 22. Power supply negative pole interface; 23. Pulse interface.

DETAILED DESCRIPTION

In the following, embodiments of the technical configurations of the application are discussed in more detail with reference to the attached drawings. The following embodiments serve only to better explain the configurations of the present application and therefore only serve as examples without restricting the scope of protection of the application.

Unless otherwise defined, all technical and scientific terms used herein are intended to have the same meanings as commonly understood by those skilled in the art to which the application relates. The terms used herein are intended to describe the purpose of the specific embodiments only, without limiting the application. The terms "comprising", "having" and their variants in the description, claims and the above accompanying drawings of the present application are intended to be non-exclusive.

In the description of the embodiments of the application, the technical terms "first", "second", etc. are used merely to distinguish different objects and are not intended to be understood as an implicit or explicit reference to the relative importance or to the number, the particular order or a subordinate-master relationship of the feature concerned. In the description of the embodiments of the present application, the term "several" refers to a number of two or more, unless otherwise defined.

The term "embodiment" mentioned here is intended to indicate that certain features, structures or properties described with reference to such embodiments may be included in at least one embodiment of the present application. The term that appears at different points in the description does not necessarily refer to one and the same embodiment. Nor is it to be understood as an independent or alternative embodiment that contradicts other embodiments. It is implicitly and explicitly understood by those skilled in the art that the embodiments described here can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" describes the relationship between related objects, which means that three relationships are possible. For example, with A and/or B, three relationships are possible, namely the sole presence of A, the simultaneous presence of A and B, and the sole presence of B. Furthermore, the character "/" usually indicates the relationship "or" between related objects that come before or after.

In the description of the embodiments of the present application, the term "several" refers to a number of two or more. Analogously, "several groups" refers to two or more groups and "several plates" refers to two or more plates.

In the description of the present application, the terms "central", "longitudinal direction", "transverse direction", "length", "width", "thickness", "top", "bottom", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential direction" etc. are used in relation to the direction or position relationship shown in the respective figures in order to merely describe the embodiments of the application and, if necessary, to simplify the description. In other words, these terms neither implicitly nor explicitly refer to the positioning, design and operation of the device or element in question in a predetermined position, so that here too there is no restriction of the application.

When describing the embodiments of the present application, the technical terms "attach", "connected to one another", "connect", "fasten" or the like should be understood in a broader sense unless expressly stated or defined otherwise. For example, this can refer to a fixed, detachable or one-piece connection as well as a mechanical and electrical connection. Direct connections, indirect connections or connections made via an intermediate piece as well as internal connections between two elements or interactions between two elements are also conceivable. As an average expert in this field, one can start from the facts in order to determine what meaning the terms mentioned should have according to the embodiments of the present application.

A heat-generating electrode pad generally comprises two functional layers, one of which is provided with a heat-generating circuit for generating heat to achieve better physiotherapy effectiveness; the other layer is provided with an electrically conductive portion for transmitting a pulse signal from a physiotherapy device to the skin of the human body, thus achieving a physiotherapy function. Thus, the heat-generating electrode pad itself has a certain thickness.

To realize automatic temperature control of an existing heat-generating electrode pad, a PTC (Positive Temperature Coefficient) heat body is connected to a power generating circuit to generate heat quickly at a low temperature to increase the temperature, and generate heat slowly at a high temperature to reduce power consumption.

A PTC heat body is composed of a PTC ceramic heat generating element and an aluminum tube. By applying a PTC heat body to a pad that is to be in contact with the skin of the human body, the heat generating electrode pad's own thickness is additionally increased by the thickness of the PTC heat body, so that the heat generating electrode pad has a large total thickness and the in contact with the skin of the human body is difficult to expect.

With this in mind, the inventor of the present application found that by connecting a thin electronic component with automatically controllable temperature to the heat-generating circuit of the heat-generating electrode pad and improving the overall structure of the heat-generating electrode pad based on the electronic component, the overall thickness of the heat-generating electrode pad can be reduced. For example, by connecting a PTC thermistor, which typically has a thickness of several millimeters, to a power-generating circuit of a heat-generating electrode pad, not only can automatic temperature control of the heat-generating electrode pad be achieved by utilizing the property of the PTC thermistor that its resistance increases with the increase in temperature of the resistance body, but also a substantial increase in the thickness of the heat-generating electrode pad can be avoided.

Based on the PTC thermistor, the overall structure of the heat generating electrode pad is improved. In detail, it is conceivable that a first conductor line and a second conductor line of a heat generating circuit are formed on one side of a polyimide film (PI film) by etching, and an electrically conductive region is formed on the other side of the PI film by etching, so that a heat generating circuit with an automatically controllable temperature is obtained by connecting the PTC thermistor and the first conductor line and the second conductor line formed by etching. Thus, the structure that realizes an automatic temperature control function and a heat generating function is formed thinly on the heat generating electrode pad; by forming the electrically conductive region on the other side of the PI film by etching, an electrical signal is transmitted to the skin of the human body through the electrically conductive region to achieve a physiotherapy function, so that the structure that realizes the physiotherapy function is thinly formed on the heat-generating electrode pad; by obtaining the heat-generating circuit with automatic temperature control on one side of the PI film and forming the electrically conductive region on the other side of the PI film by etching, the automatic temperature control function, the heat generation function and the physiotherapy function can be realized on a single PI film, thus reducing the overall thickness of the heat-generating electrode pad.

The application of the heat-generating electrode pad according to the embodiment of the present application includes, but is not limited to, the field of physiotherapy. Rather, it can be widely applied to other fields, such as the field of beauty and skin care, to contribute to firm skin and improved skin structure.

Specifically, 1 pointed out. 1 shows a structural view of the heat-generating electrode pad according to an embodiment of the present application. P 1 in 1 a schematic representation of the first side of the PI foil and P2 in 1 a schematic representation of the second side of the PI foil. As in 1 As shown, the heat generating electrode pad 10 comprises a PI film 110, a temperature control element 120, a first electrode 130, a second electrode 140 and a third electrode 150; the temperature control element 120 comprises at least one PTC thermistor; the first electrode 130 is for connecting to a positive pole of a power supply, the second electrode 140 is for connecting to a negative pole of the power supply and the third electrode 150 is for connecting to an electrical signal interface; the temperature control element 120 is attached to a first side 11a of the PI film; the first side 11a of the PI film forms a first conductor track 111 and a second conductor track 112 by etching, one end of the first conductor track 111 is connected to the temperature control element 120 and the other end of the first conductor track 111 is connected to the first electrode 130, while one end of the second conductor track 112 is connected to the temperature control element 120 and the other end of the second conductor track 112 is connected to the second electrode 140, so that the first electrode 130, the temperature control element 120 and the second electrode 140 form a closed circuit; a second side 11b of the PI film forms an electrically conductive region 113 by etching, which is connected to the third electrode 150.

The PI film 110 is a thermosetting plastic and is usually made from a polyimide resin using a thin film technology. It is characterized by good corrosion resistance, resistance to chemical corrosion and insulating properties, among other things.

It will be 2 pointed out. 2 shows a structural diagram of a temperature control element according to an embodiment of the present application. P1 in 2 shows a structural diagram in the case where the temperature control element 120 comprises a PTC thermistor 121. P2 in 2 shows a structural diagram in the case where the temperature control element 120 comprises several PTC thermistors 122-124. As can be seen from P1 in 2 the PTC thermistor 121 is attached to the first side of the PI foil and connected to the first conductor track and the second conductor track of the PI foil if the temperature control element 120 is a PTC thermistor; if the temperature control element 120 is a plurality of PTC thermistors connected in parallel, as can be seen from P2 in 2 the plurality of PTC thermistors 121-124 should be connected in parallel and then the temperature control element 120, which is formed by the plurality of PTC thermistors connected in parallel, is connected to the first conductor track and the second conductor track of the PI film.

Here, the PTC thermistor is a temperature sensor made by the positive temperature coefficient effect, and its resistance value is small at a certain temperature and increases drastically when the temperature is exceeded. This property enables the PTC thermistor to be used for overcurrent protection, circuit stability control, temperature measurement and control. Therefore, by connecting the PTC thermistor to the heat-generating circuit of the heat-generating electrode pad 10, automatic temperature control of the heat-generating electrode pad 10 can be achieved; further, the PTC thermistor can have a dimension of down to several millimeters and a thickness of down to several to tens of millimeters. Therefore, no significant increase in the thickness of the heat-generating electrode pad 10 is caused by connecting the PTC thermistor to the heat-generating circuit of the heat-generating electrode pad 10.

At this time, the method for attaching the temperature control element 120 to the PI film 110 can be selected according to actual needs. For example, the temperature control element 120 can be welded to the first side 11a of the PI film. Alternatively, the temperature control element 120 can be glued to the first side 11a of the PI film.

It will continue on 1 As can be seen from P1 in 1 , on the first side 11a of the PI foil, one end of the first conductor track 111 is connected to the temperature control element 120 and the other end of the first conductor track 111 is connected to the first electrode 130, while one end of the second conductor track 112 is connected to the temperature control element 120 and the other end of the second conductor track 112 is connected to the second electrode 140. Thus, a heat-generating circuit can be formed on the first side 11a of the PI foil. by the first electrode 130, the first conductor line 111, the temperature control element 120, the second conductor line 112 and the second electrode 140. When the first electrode 130 is connected to a positive terminal of a power supply and the second electrode 140 is connected to a negative terminal of the power supply, the heat generating circuit generates heat through the first conductor line 111 and the second conductor line 112, thus achieving the heat generating function; the amount of heat generated by the first conductor line 111 and the second conductor line 112 is controlled by the heat generating circuit via the temperature control element 120, thus achieving the automatic temperature controlling function.

As can be seen from P2 in 1 , on the second side 11b of the PI film, the electrically conductive region 113 is connected to the third electrode 150. When the third electrode 150 is connected to an electrical signal interface of an external electronic device (for example, to a main unit of a physiotherapy device) and the second side 11b of the PI film adheres to the skin, the electrically conductive region 113 receives an electrical signal and transmits it to the skin, thus achieving the physiotherapy function.

Here, etching refers to a technique for removing a part of a material by chemical reaction or physical impact. Therefore, after forming the first conductor 111 and the second conductor 112 by etching on the first side 11a of the PI film, the thickness of the heat-generating circuit formed by the first conductor 111 and the second conductor 112 is only the sum of the thickness of the PI film and the thickness of a PTC thermistor; after forming the electrically conductive portion 113 by etching on the second side 11b of the PI film, the thickness of the structure for realizing the heat-generating function, the automatic temperature control function, and the physiotherapy function on the heat-generating electrode pad 10 is only the sum of the thickness of the PI film and the thickness of a PTC thermistor. Thus, the total thickness of the heat-generating electrode pad 10 is reduced, and the contact with the skin is facilitated. Furthermore, disturbance of the circuit structures formed on the first side 11a of the PI film and the second side 11b of the PI film and the functions realized thereby is prevented by the good heat resistance, the good resistance to chemical corrosion and the good insulating ability of the PI film 110.

In the embodiments of the present application, a heat generating circuit with automatic temperature control is obtained by connecting the PTC thermistor having a small thickness and the first conductor line 111 and the second conductor line 112 formed by etching the PI film 110. Thus, the structure realizing the automatic temperature control function and the heat generating function is thinly formed on the heat generating electrode pad 10; by forming the electrically conductive region 113 on the second side 11b of the PI film by etching, an electrical signal is transmitted to the skin of the human body via the electrically conductive region 113 to achieve the physiotherapy function, so that the structure realizing the physiotherapy function is thinly formed on the heat generating electrode pad 10; By providing the automatically temperature controllable heat generating circuit on the first side 11a of the PI foil and forming the electrically conductive region 113 on the second side 11b of the PI foil by etching, the automatic temperature control function, the heat generating function and the physiotherapy function can be realized on a single PI foil 110, thus reducing the overall thickness of the heat generating electrode pad 10.

It should be noted that in the embodiment of the present application, there is neither a limitation on the arrangement of the first conductor line 111 and the second conductor line 112 on the first side of the PI film 110 nor a limitation on the specific shape of the electrically conductive region 113. The arrangement of the first conductor line 111 and the second conductor line 112 on the first side of the PI film 110 and the shape of the electrically conductive region 113 can be determined according to actual needs. For example, in order to ensure sufficient amounts of the first conductor line 111 and the second conductor line 112 on the PI film 110, it is conceivable that a curved (for example, "S"-shaped) conductor line is formed on the PI film 110 by etching to increase the length of the first conductor line 111 and the second conductor line 112, respectively. In detail, reference can be made to the arrangement of the first conductor track 111 and the second conductor track 112 in 3 be taken. 3 a schematic structural view of the first side of the PI foil according to an embodiment of the present application; for example, on the second side 11b of the PI foil, by etching the in P2 of 1 shown square region may be formed to facilitate etching of the electrically conductive region 113 and to enable uniform transmission of an electrical signal to the skin through the electrically conductive region 113.

It will be 4 which shows an exploded view of the heat-generating electric denpads according to the embodiment of the present application. P1 in 4 shows an exploded view of the heat-generating electrode pad 10 in a plan view. P2 in 4 shows an exploded view of the heat-generating electrode pad 10 in a bottom view. The heat-generating electrode pad 10 further comprises a first layer 160 and a second layer 170; the first layer 160 is arranged on the first side 11a of the PI foil and covers the first conductor track 111, the second conductor track 112 and the temperature control element 120; while the second layer 170 is arranged on the second side 11b of the PI foil and covers the electrically conductive region 113.

The heat generating circuit and the electrically conductive area 113 exposed on the PI film 110 easily lead to the safety hazard. Therefore, the first layer 160 can be provided on the first side 11a of the PI film, as can be seen from P1 in 4 to cover the first conductor track 111, the temperature control element 120 and the second conductor track 112 in the power generating circuit by the first layer 160; as shown in P2 of 4 As shown, the second layer 170 can be provided on the second side 11b of the PI film in order to cover the electrically conductive region 113 by the second layer 170 and thus improve the safety of the heat-generating electrode pad 10.

In an optional possibility, it is conceivable that the shape and size of the first layer 160, the PI film 110 and the second layer 170 are the same in order to completely cover the first side 11a of the PI film by the first layer 160 and to completely cover the second side 11b of the PI film by the second layer 170. The safety of the heat-generating electrode pad is thus further improved.

In an optional possibility, it is provided that the first layer 160 is a substrate layer made of a flexible, thermally insulating material, while the second layer 170 is a thin layer made of a gel material. In detail, it is conceivable that the first layer 160 consists of silicone and the second layer consists of hydrogel. The first layer 160 is designed as a substrate layer made of a thermally insulating material, whereby the loss when the heat generated by the first side 11a of the PI film is transferred to the air can be reduced, so that heat from the heat-generating circuit is transferred to the skin as much as possible; by the first layer 160 being designed as a substrate layer made of a flexible material, the heat-generating electrode pad 10 can lie against the skin as much as possible; by the second layer 170 consisting of a gel material, the heat-generating electrode pad 10 can adhere to the skin and evenly transmit an electrical signal from the electrically conductive region 113 to the skin.

It should be noted that in the embodiment of the present application, there is no specific limitation on the method of attaching the first layer 160 and the second layer 170. For example, the first layer 160 may be snapped onto the first side 11a of the PI film and the second layer 170 may be glued onto the second side 11b of the PI film.

In the heat-generating electrode pad 10, several design options are conceivable for the first electrode 130, the second electrode 140 and the third electrode 150. In embodiments of the present application, embodiments of the application are described using the example of the design in which the first electrode 130, the second electrode 140 and the third electrode 150 are each a button electrode 180 or the first electrode 130, the second electrode 140 and the third electrode 150 are each an electrical wire.

If the first electrode 130, the second electrode 140 and the third electrode 150 are each an electric wire, further 4 One end of the first electrode 130 is attached to the first side 11a of the PI film and connected to the other end of the first conductor track 111, while the other end of the first electrode 130 is used to connect to the positive pole of the power supply; one end of the second electrode 140 is attached to the first side of the PI film 11a and connected to the other end of the second conductor track 112, while the other end of the second electrode 140 is used to connect to the negative pole of the power supply; one end of the third electrode 150 is attached to the second side 11b of the PI film and connected to the electrically conductive region 113, while the other end of the third electrode 150 is used to connect to the electrical signal interface.

At this time, the method of fixing the electric wire to the PI film 110 can be selected according to the actual use requirement. For example, the electric wire may be welded to the PI film 110. Alternatively, the electric wire may be glued to the PI film 110.

In an optional possibility, the area of the first electrodes 130 and the second electrode 140 covered by the first layer 160 is a bare wire, while the area of the first electrode 130 and the second electrode 140 not covered by the first layer 160 is is an insulated wire. Analogously, the area of the third electrode 150 covered by the second layer 170 is a bare wire, while the area of the third electrode 150 not covered by the second layer 170 is an insulated wire.

The button electrode 180 comprises an electrode plug part 181, an electrode base part 182 and an electrode socket part. If the first electrode 130, the second electrode 140 and the third electrode 150 are each a button electrode 180, 5 which shows a sectional view of a button electrode that fits with other parts in the heat generating electrode pad according to the embodiment of the present application. The electrode plug part 181 of the button electrode 180 is located on a side of the first layer 160 facing away from the first side 11a of the PI film 110 (for example, the side marked 161 in the figure). One end of the electrode bottom part 182 of the button electrode 180 (for example, the end marked 1821) is located between the second layer 170 and the second side 11b of the PI film. The electrode bottom part 182 passes through the PI film 110 and the first layer 160. The other end of the electrode bottom part 182 (for example, the end marked 1822 in the figure) is snapped onto the electrode plug part 181.

The electrode plug-in part 181 is arranged on the side of the first layer 160 facing away from the first side 11a of the PI film (for example, the side marked 161 in the figure). One end of the electrode base part 182 (for example, the end marked 1821) is arranged between the second layer 170 and the second side 11b of the PI film. As the electrode base part 182 passes through the PI film 110 and the first layer 160, the other end of the electrode base part 182 (for example, the end marked 1822 in the figure) is snapped onto the electrode plug-in part 181.

The female part of the first electrode is attached to the positive pole of the power supply, and the female part of the second electrode is attached to the negative pole of the power supply. The electrode male part of the first electrode 130 and the female part of the first electrode are snapped together, and the electrode male part of the second electrode 140 and the female part of the second electrode are snapped together, so that electric charge of the power supply flows through the female part of the first electrode, the electrode male part of the first electrode 130, the electrode lower part of the first electrode 130, the first conductor line 111, the temperature control element 120, the second conductor line 112, the electrode lower part of the second electrode, the electrode male part of the second electrode 140, and the female part of the second electrode in sequence, whereby the first conductor line 111 and the second conductor line 112 generate heat; the socket part of the third electrode is attached to the electrical signal interface, and the electrode plug part of the third electrode 150 and the socket part of the third electrode are snapped together, so that an electrical signal is transmitted along the transmission path from the electrical signal interface, the socket part of the third electrode, the electrode plug part of the third electrode 150, the electrode bottom part of the third electrode 150 to the electrically conductive region 113, whereby an electrical signal for realizing the physiotherapy function is transmitted to the electrically conductive region 113.

Furthermore, an embodiment of the present application provides a connection method for an electrode and a lead wire when using a button electrode. 6 shows a structural view of the PI film according to an embodiment of the present application. P1 shows in 6 a schematic structural view of the first side of the PI foil and P2 in 6 a schematic structural view of the second side of the PI foil. It is 6 The first side 11a of the PI film further forms a first coil 114 and a second coil 115 by etching, and the second side 11b of the PI film further forms a third coil 116 by etching; the inner wall of the first coil 114 is connected to the electrode bottom part of the first electrode 130 and the outer wall of the first coil 114 is connected to the other end of the first conductor track 111, while the inner wall of the second coil 115 is connected to the electrode bottom part of the second electrode 140 and the outer wall of the second coil 115 is connected to the other end of the second conductor track 112, so that the first electrode 130, the temperature control element 120 and the second electrode 140 form a closed circuit; the inner wall of the third coil 116 is connected to the electrode lower part of the third electrode 150 and the outer wall of the third coil 116 is connected to the electrically conductive region 113.

In contrast to a connection of the first conductor track 111 with the electrode lower part 182 of the first electrode 130 via point contact, a connection of the inner wall of the first coil 114 with the electrode lower part 182 of the first electrode 130 is established via surface contact by connecting the outer wall of the first coil 114 with the first conductor track 111. The contact area of the heat-generating circuit on the PI film 110 and the first electrode 130 can thus be increased. This also applies to the provision of the second coil 115 and the third coil 116 and a more detailed description is omitted here.

In the embodiment of the present application, by increasing the contact area between the heat-generating circuit on the PI film 110 and the first electrode 130 and between the heat-generating circuit on the PI film 110 and the second electrode 140, the stability of the contact between the heat-generating circuit and the first electrode 130 and the second electrode 140 is improved; by increasing the contact area between the electrically conductive region 113 on the PI film and the third electrode 150, the stability of the contact between the electrically conductive region 113 and the third electrode 150 is improved.

According to another aspect of the embodiments of the present application, a physiotherapy device is provided. 7 shows a structural view of the physiotherapy device according to an embodiment of the present application. It is 7 The physiotherapy device 1 comprises a main unit 20 and the heat-generating electrode pad 10 according to any one of the above embodiments; a power supply positive terminal interface 21 of the main unit 20 is connected to the first electrode 130 of the heat-generating electrode pad 10 and a power supply negative terminal interface 22 of the main unit 20 is connected to the second electrode 140 of the heat-generating electrode pad 10 to supply power to the heat-generating electrode pad 10; a pulse interface 23 of the main unit 20 is connected to the third electrode 150 of the heat-generating electrode pad 10 to transmit a pulse signal to the third electrode 150.

The pulse signal is a short and abrupt electrical signal and is usually characterized by the temporal property of rapid rise and fall. In terms of shape, it can be a square wave, a spike wave or another waveform. The pulse signal is characterized by discrete temporal distribution, i.e. it occurs only once or several times within a period of time.

In physical therapy, nerves or muscles can be stimulated by pulse signals that can be used for muscle and nerve electrical stimulation, percutaneous electrical nerve stimulation, or other treatment methods. By precisely controlling the width, frequency, amplitude, and waveform of the pulses, a physical therapist can deliver physical therapy for a specific treatment goal, such as relieving pain, improving blood circulation, or enhancing muscle function. Such pulse signals are transmitted through the skin to nerves and muscles within the body to achieve a desired treatment effect.

If the first electrode 130, the second electrode 140 and the third electrode 150 are each a button electrode 180, P1 in 7 In use, electrode socket parts at individual interfaces of the main unit 20 are to be snapped onto electrode plug parts on the heat-generating electrode pad 10; if the first electrode 130, the second electrode 140 and the third electrode 150 are each an electric wire, P2 in 7 In use, individual interfaces of the main unit 20 should be connected to electrical wires on the heat-generating electrode pad 10.

By connecting the power supply positive terminal interface 21 of the main unit 20 to the first electrode 130 of the heat-generating electrode pad 10 and connecting the power supply negative terminal interface 22 to the second electrode 140 of the heat-generating electrode pad 10, the heat-generating electrode pad 10 is supplied with power via the main unit 20, thus achieving the heat generation function and the automatic temperature control function of the heat-generating electrode pad 10; by connecting the pulse interface 23 to the third electrode 150 of the heat-generating electrode pad 10, a pulse signal is transmitted to the third electrode 150 via the main unit 20, thus achieving the physiotherapy function of the heat-generating electrode pad 10.

Finally, it should be noted that the above embodiments only serve to illustrate the technical design of the present application without limiting it. Although the present application has been described in detail with reference to the above embodiments, it will be understood by those of ordinary skill in the art that modifications to the embodiments described in the preceding embodiments or equivalent replacements of some or all of the technical features contained therein are still possible. However, such modifications or replacements do not cause the main ideas of the corresponding embodiments to deviate from the scope of the embodiments of the individual embodiments of the present invention. Rather, they should be included in the scope of the claims and the description of the present application. In particular, Individual technical features mentioned in the respective embodiments can be combined with one another in any way, provided that there is no structural contradiction. The present application is in no way limited to the specific embodiments disclosed here and rather includes all technical configurations that fall within the scope of the claims.

Claims (10)

Heat-generating electrode pad, characterized in that the pad comprises a PI film, a temperature control element, a first electrode, a second electrode and a third electrode; wherein the temperature control element comprises at least one PTC thermistor; wherein the first electrode serves to connect to a positive pole of a power supply, the second electrode to connect to a negative pole of the power supply and the third electrode to connect to an electrical signal interface; wherein the temperature control element is attached to a first side of the PI film; wherein the first side of the PI film forms a first conductor track and a second conductor track by etching, wherein one end of the first conductor track is connected to the temperature control element and the other end of the first conductor track is connected to the first electrode, while one end of the second conductor track is connected to the temperature control element and the other end of the second conductor track is connected to the second electrode, so that the first electrode, the temperature control element and the second electrode form a closed circuit; wherein a second side of the PI foil forms an electrically conductive region by etching, which is connected to the third electrode. Pad after Claim 1 , characterized in that the pad further comprises a first layer and a second layer, wherein the first layer is arranged on the first layer of the PI film and covers the first conductor track, the second conductor track and the temperature control element; while the second layer is arranged on the second layer of the PI film and covers the electrically conductive region. Pad after Claim 2 , characterized in that the first electrode, the second electrode and the third electrode are each a button electrode, wherein an electrode plug-in part of the individual button electrode is located on a side of the first layer facing away from the first side of the PI film and an electrode lower part of the respective button electrode is located between the second layer and the second side of the PI film, wherein the electrode lower part passes through the PI film and the first layer and the other end of the electrode lower part is snapped onto the electrode plug-in part. Pad after Claim 3 , characterized in that the first side of the PI film further forms a first coil and a second coil by etching and the second side of the PI film further forms a third coil by etching; wherein the inner wall of the first coil is connected to the electrode lower part of the first electrode and the outer wall of the first coil is connected to the other end of the first conductor track, while the inner wall of the second coil is connected to the electrode lower part of the second electrode and the outer wall of the second coil is connected to the other end of the second conductor track, so that the first electrode, the temperature control element and the second electrode form a closed circuit; wherein the inner wall of the third coil is connected to the electrode lower part of the third electrode and the outer wall of the third coil is connected to the electrically conductive region. Pad after Claim 2 , characterized in that the first electrode, the second electrode and the third electrode are each an electrical wire; wherein one end of the first electrode is attached to the first side of the PI film and connected to the other end of the first conductor track, while the other end of the first electrode serves to connect to the positive pole of the power supply; wherein one end of the second electrode is attached to the first side of the PI film and connected to the other end of the second conductor track, while the other end of the second electrode serves to connect to the negative pole of the power supply; wherein one end of the third electrode is attached to the second side of the PI film and connected to the electrically conductive region, while the other end of the third electrode serves to connect to the electrical signal interface. Pad according to Claim 2 , characterized in that the shape and size of the first layer, the PI film and the second layer are the same. Pad according to Claim 2 , characterized in that the first layer is a substrate layer made of a flexible, thermally insulating material, while the second layer is a thin layer made of a gel material. Pad after Claim 7 , characterized in that the flexible, thermally insulating material is silicone and the gel material is hydrogel. Pad after Claim 1 , characterized in that the temperature control element is a PTC thermistor, or that the temperature control element is several PTC thermistors connected in parallel. Physiotherapy device, characterized in that the physiotherapy device comprises a main unit and the heat-generating electrode pad according to one of the Claims 1 until 9 wherein a power supply positive terminal interface of the main unit is connected to the first electrode of the heat generating electrode pad and a power supply negative terminal interface of the main unit is connected to the second electrode of the heat generating electrode pad to supply power to the heat generating electrode pad; wherein a pulse interface of the main unit is connected to the third electrode of the heat generating electrode pad to transmit a pulse signal to the third electrode.

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