Electrode plate device for medium-frequency electrotherapy

Abstract

The invention discloses an electrode plate device for medium-frequency electrotherapy, which belongs to the technical field of medical equipment and comprises a bundle-shaped layer, a framework component and an additional layer, and the bundle-shaped layer is sheet-shaped and has flexibility; the beam-shaped layer is provided with a wiring assembly used for being connected with an intermediate-frequency electro-therapeutic apparatus. The framework assembly is arranged in the beam-shaped layer; the additional layer is arranged at the bottom of the bundle-shaped layer and used for loading hydrogel and / or absorbent cotton pieces. The bundle-shaped layer is made of a flexible material, deformation of the framework assembly is not limited, and the hub unit in the framework assembly can be rotationally matched with the connecting piece at normal temperature, so that the whole electrode plate device can be attached to the curved surface of a body and can be fully attached to parts such as joints, and when the temperature of the hub unit is gradually increased and is higher than the set temperature, the electrode plate device is not damaged. The limiting structure fixes the connecting sheet, so that an included angle between the connecting sheet and the hub unit is maintained, deformation and falling of the electrode sheet caused by movement of a patient in a treatment process are avoided, and stable conduction of an electrotherapy signal is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to an electrode sheet device for medium-frequency electrotherapy. Background Art

[0002] Medium-frequency electrotherapy, a common physical therapy method, effectively promotes blood circulation, relieves muscle spasms, and alleviates pain by applying medium-frequency current to the human body. It is widely used in rehabilitation medicine, pain management, and other fields. Electrodes, the key connecting component between the medium-frequency electrotherapy device and the human skin, have a direct impact on treatment effectiveness and patient experience. Currently, electrodes are only attached to the patient's body via hydrogel. When applied to a patient's joints, they can easily fall off with even the slightest movement, rendering them ineffectively fixed to the patient's joints and limbs. Summary of the Invention

[0003] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide an electrode sheet device for medium-frequency electrotherapy, which can be more stably attached to the patient's limbs by providing a skeleton component.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: The present invention provides an electrode sheet device for medium-frequency electrotherapy, comprising: A beam-forming layer, which is sheet-shaped and flexible; a wiring assembly for connecting to a medium-frequency electrotherapy device is provided on the beam-forming layer; The skeleton assembly is arranged in the beam layer and includes a plurality of hub units distributed in a rectangular array, and adjacent hub units are connected by connecting pieces; an additional layer, disposed at the bottom of the bundle-shaped layer, for loading the hydrogel and / or the cotton wool sheet; In which, a temperature-controlled limiting structure is provided in the hub unit. When the temperature of the limiting structure is lower than the set temperature, the connecting piece has the freedom to rotate on the hub unit; when the temperature of the limiting structure is higher than the set temperature, the limiting structure fixes the connecting piece to the hub unit.

[0005] Preferably, the hub unit includes a shell, the shell has four limit openings, a connecting head is provided at the end of the connecting piece, the connecting head is fixedly connected to the connecting piece through a cylindrical portion, the cylindrical portion is rotatably installed in the limit opening, and the end of the limit opening close to the center of the shell is connected to a swing cavity for accommodating the connecting head.

[0006] Preferably, a sliding cavity communicating with the swing cavity is provided in the housing, and the limiting structure includes: A limit block is slidably mounted in the sliding cavity, wherein one end of the limit block close to the connector is provided with a tooth pattern, and the connector is provided with sharp teeth that cooperate with the tooth pattern; The extrusion piece is arranged in the shell and is used to push the limit block so that the tooth pattern can clamp the sharp teeth.

[0007] Preferably, the extrusion piece is made of nickel-titanium shape memory alloy material, and the set temperature is the phase transition temperature of the extrusion piece; When the temperature of the extrusion piece is lower than its own phase change temperature, the limit block has the ability to move in the sliding cavity. When the temperature of the extrusion piece is higher than its own phase change temperature, the extrusion piece presses against the limit block, causing the tooth pattern to clamp the sharp teeth.

[0008] Preferably, the connecting piece is made of nickel-titanium shape memory alloy material, and the phase change temperature of the connecting piece is lower than the phase change temperature of the extruded part.

[0009] Preferably, an extrusion cavity communicating with the sliding cavity is provided in the shell, and the extrusion piece is U-shaped and arranged in the extrusion cavity; two sides of the U-shape respectively abut against the limit block and the inner wall of the extrusion cavity away from the limit block.

[0010] Preferably, the width of the cylindrical portion is smaller than the width of the connecting head, and the width of the limiting opening is larger than the width of the cylindrical portion and smaller than the width of the connecting head.

[0011] Preferably, a conductive sheet connected to the additional layer is provided at the bottom of the housing.

[0012] Preferably, the wiring assembly includes a wire and a wiring terminal arranged at one end of the wire, the other end of the wire is connected to the skeleton assembly, and the wiring terminal is connected to the output connector of the medium frequency electrotherapy device.

[0013] Preferably, a heating wire is provided in the bundle layer, the heating wire is covered with an insulating film, and a temperature control module for controlling the heating of the heating wire is provided on the wiring assembly.

[0014] The beneficial effects of the present invention are: The beam-shaped layer of the present invention is made of a flexible material and does not restrict the deformation of the skeleton component. The hub unit in the skeleton component can rotate and cooperate with the connecting piece at room temperature, so that the electrode sheet device as a whole can fit the curved surface of the body and can fully fit the joints and other parts, so that the hydrogel and / or cotton pad can fully contact the body. When the temperature of the hub unit gradually rises and exceeds the set temperature, the limiting structure fixes the connecting piece to maintain the angle with the hub unit, thereby forming an electrode sheet shape that adapts to the patient's body and has a certain strength. This prevents the electrode sheet from deforming and falling off due to patient movement during treatment, and ensures stable transmission of electrotherapy signals. The extrusion designed in the present invention is made of nickel-titanium shape memory alloy, and its phase change temperature is the set temperature. Therefore, at room temperature, the extrusion is relatively soft and will not push the limit block to clamp the connector, so that the skeleton assembly can be deformed to adapt to the patient's limb. When the temperature of the extrusion is higher than the phase change temperature, the extrusion gradually resets and hardens, thereby pushing the limit block to clamp the connector, maintaining the current shape of the skeleton assembly, thereby forming a structure with a certain strength that adapts to the curved surface of the patient's limb, maintaining the positional relationship between the electrode device and the patient's limb, and preventing the electrode device from falling off or displacing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A three-dimensional diagram of the overall structure of an electrode device for medium-frequency electrotherapy provided by an embodiment of the present invention.

[0017] Figure 2 This is a distribution diagram of the bottom electrode pads of an electrode pad device for medium-frequency electrotherapy provided by an embodiment of the present invention.

[0018] Figure 3 This is a distribution diagram of the skeleton components within the beam layer of an electrode sheet device for medium-frequency electrotherapy provided by an embodiment of the present invention.

[0019] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0020] Figure 5 A three-dimensional diagram of a hub unit and a connecting piece in an electrode piece device for medium-frequency electrotherapy provided by an embodiment of the present invention.

[0021] Figure 6 This is a top view of the hub unit and the connecting piece in an electrode piece device for medium-frequency electrotherapy provided by an embodiment of the present invention.

[0022] Figure 7 for Figure 6 Cross-sectional view at AA in the middle.

[0023] Figure 8 for Figure 7 A partial enlarged view of point B in the middle.

[0024] Figure 9 This is a front view of a hub unit and a connecting piece in a medium-frequency electrotherapy electrode device provided by an embodiment of the present invention.

[0025] Figure 10 for Figure 9 Cross-sectional view at the middle BB.

[0026] Description of reference numerals: 1. Beam-forming layer, 2. Terminal block, 3. Wire, 4. Temperature control module, 5. Skeleton assembly, 51. Hub unit, 511. Shell, 512. Limit opening, 513. Swing cavity, 514. Sliding cavity, 515. Limit block, 5151. Tooth pattern, 516. Extrusion cavity, 52. Connecting piece, 53. Connecting head, 531. Pointed teeth, 54. Cylindrical part, 55. Extrusion part, 6. Additional layer, 7. Conductive sheet. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1: like Figures 1 to 10 As shown, embodiment 1 of the present invention provides an electrode sheet device for medium-frequency electrotherapy, including a beam-forming layer 1, a skeleton component 5, an additional layer 6, and a wiring component, wherein the beam-forming layer 1 is made of medical-grade flexible silicone material, is in sheet form, and has good flexibility. The beam-forming layer 1 wraps the skeleton component 5 so that the skeleton component 5 is not directly exposed to the outside. A wiring component is provided on the surface of the beam-forming layer 1, and the wiring component includes a wire 3 and a terminal 2. One end of the wire 3 is connected to the skeleton component 5, and the terminal 2 at the other end can be quickly plugged and unplugged with the output connector of the medium-frequency electrotherapy device, so as to facilitate the assembly and disassembly of the electrode sheet and the electrotherapy device. The skeleton component 5 is made of metal material, and the wire 3 can conduct the therapeutic current to the human body through the skeleton component 5.

[0029] like Figures 4 to 8 As shown, a plurality of hub units 51 and a plurality of connecting pieces 52 are provided in the skeleton component 5, wherein the hub units 51 are evenly distributed in the beam layer 1 in a rectangular array, and each hub unit 51 comprises a shell 511. Four limiting openings 512 are respectively provided on the four sides of the shell 511, which are used to connect the four connecting pieces 52. A cylindrical portion 54 is fixed to the end of the connecting piece 52, and a connector 53 is fixed to the side of the cylindrical portion 54 away from the connecting piece 52. The connector 53, the connecting piece 52 and the cylindrical portion 54 are an integral whole. Figure 5It can be seen that the width of the cylindrical portion 54 is smaller than that of the connector 53 and the connecting piece 52, but the thickness of the cylindrical portion 54 is greater than that of both the connector 53 and the connecting piece 52. The width of the retaining opening 512 is greater than that of the cylindrical portion 54 and smaller than that of the connector 53, preventing the connector 53 from escaping from the retaining opening 512. The retaining opening 512 is provided with a curved surface that mates with the cylindrical portion 54, allowing the cylindrical portion 54 to rotate within a certain angle within the retaining opening 512. Adjacent hub units 51 are flexibly connected via the connecting piece 52, allowing the skeleton assembly 5 to bend along with the shaping layer 1 to adapt to the shape of the patient's limb.

[0030] A limiting structure driven by temperature changes is provided in the housing 511. The limiting structure can limit the angle between the connecting piece 52 and the pivot unit 51, thereby fixing the shape of the skeleton component 5 and actively maintaining the shape that adapts to the patient's limb. In this embodiment, the limiting structure is specifically a limiting block 515 and an extrusion piece 55. Figure 8 As shown, within the housing 511, there are defined a swing chamber 513 communicating with the stop opening 512, a sliding chamber 514 communicating with the swing chamber 513, and an extrusion chamber 516 communicating with the sliding chamber 514. A limit block 515 is slidably mounted within the sliding chamber 514, and an extrusion member 55 is mounted within the extrusion chamber 516. The limit block 515 has teeth 5151 on the end near the connector 53, and the connector 53 has sharp teeth 531 on the end near the limit block 515 that can be inserted into the teeth 5151.

[0031] like Figure 9 As shown, the extrusion member 55 is U-shaped and positioned within the extrusion cavity 516. The two sides of the U-shape respectively abut the stopper 515 and the inner wall of the extrusion cavity 516 away from the stopper 515. The extrusion member 55 is made of a nickel-titanium shape memory alloy, and its phase transition temperature is close to human body temperature, which can be between 34 and 36 degrees Celsius. At room temperature, the extrusion member 55 has not yet reached its set temperature, i.e., its own phase transition temperature, and is relatively flexible. When the connecting piece 52 is subjected to force and rotates about the cylindrical portion 54, the sharp teeth 531 can shift the tooth pattern 5151, causing the stopper 515 to move toward the extrusion member 55 within the sliding cavity 514. Since the stopper 515 is no longer able to abut the connector 53, the skeleton assembly 5 can bend and conform to the shape of the patient's treatment area (e.g., arm, leg, etc.).

[0032] When the patient's body temperature is gradually transferred to the electrode device, causing the temperature of the extrusion piece 55 to gradually rise to the phase transition temperature, the extrusion piece 55 begins to restore its original shape and increase its deformation resistance. During this process, the limit block 515 is pushed toward the connector 53, so that the tooth pattern 5151 is stuck with the sharp teeth 531, maintaining the angle between the connecting piece 52 and the hub unit 51, so that the skeleton assembly 5 remains in a state of fitting with the patient's limb.

[0033] A conductive sheet 7 is secured to the bottom of the housing 511. The additional layer 6, made of non-woven fabric, is used to hold a hydrogel or cotton pad, or a combination of both. The conductive sheet 7 passes through the additional layer 6 and comes into contact with the hydrogel and / or cotton pad. Throughout the treatment process, the hydrogel or cotton pad on the additional layer 6 continuously functions. The hydrogel ensures good electrical conductivity between the skin and the electrode pad, reducing the discomfort of electrical stimulation. If a cotton pad is used, it can be combined with drug penetration to provide comprehensive treatment for conditions such as joint inflammation.

[0034] During use, connect the medium-frequency electrotherapy device through the terminal 2. Then evenly apply the hydrogel and / or cotton pads and fix them on the surface of the additional layer 6, and fit the device to the patient's limb skin. Start the electrotherapy device, and the treatment current is conducted to the patient through the wire 3, the skeleton component 5 and the hydrogel and / or cotton pads. At the same time, as the patient's body temperature is conducted, the temperature of the device gradually rises to the phase transition temperature, and the extrusion 55 made of nickel-titanium memory alloy undergoes a phase change, changes its shape and pushes the limit block 515, so that the teeth 5151 on the limit block 515 are stuck to the sharp teeth 531 on the connector 53. At this time, the shape of the skeleton component 5 is fixed and stably maintained in a state of fitting the treatment area, ensuring that the medium-frequency current is evenly conducted to the skin. Since the extrusion 55 in the skeleton component 5 of the present invention is relatively small and its structural strength is limited, when it is necessary to remove the electrode sheet, it is only necessary to force the bundle layer 1 to deform the extrusion 55 by external force.

[0035] Example 2: On the basis of Example 1, the connecting piece 52 is also made of nickel-titanium memory alloy material, and the phase change temperature of the connecting piece 52 is two to three degrees lower than the phase change temperature of the extrusion piece 55. In this way, at room temperature, the connecting piece 52 will also be softer, making it easier for the beam layer 1 and the skeleton component 5 to fit the patient's body shape. The connector 53 at the end of the connecting piece 52 is also easier to stagger the tooth pattern 5151 on the limit block 515, making it easier for the connecting piece 52 to rotate around the cylindrical portion 54 as the center. When the patient's body temperature is gradually transmitted to the device, the connecting piece 52, the connecting head 53 and the cylindrical portion 54 harden first, so that the sharp teeth 531 are aligned with the corresponding positions of the tooth pattern 5151. Then the temperature of the extrusion piece 55 also reaches the phase change temperature, pushing the limit block 515 to move, so that the tooth pattern 5151 clamps the sharp teeth 531, maintaining the shape of the skeleton component 5.

[0036] Example 3: Based on the first and second embodiments, this third embodiment incorporates a temperature control module 4, which is mounted on a conductor 3. The medium-frequency electrotherapy device can supply power to the temperature control module 4 via a wiring assembly. An insulating film is added to the bundle layer 1, within which a heating wire is mounted. The temperature control module 4 controls the heating of the heating wire via the conductor 3. This allows the phase transition temperature of the extruded member 55 and the connecting piece 52 to be designed to be between 40 and 45 degrees Celsius.

[0037] After connecting the medium-frequency electrotherapy device and placing the electrodes on the patient's treatment area, the heating wire is activated through the temperature control module 4. As the heating wire heats, it raises the temperature of the extrusion piece 55 and the connecting piece 52, gradually returning to their original shape and hardening. When the temperature reaches 40 to 45 degrees Celsius, the shape of the skeleton component 5 is fixed. Even if the patient slightly moves the knee joint during treatment, the electrode will not move, ensuring that the medium-frequency current continuously and stably acts on the treatment area. Furthermore, heating raises the temperature of the cotton pad, increasing the activity of the drug molecules and accelerating the drug's penetration through the skin to the affected area, achieving the dual effects of electrotherapy and drug treatment. Simultaneously, the warming effect generated by the heating wire can also dilate local blood vessels, improve blood circulation, and further enhance the treatment effect. When the treatment is completed, heating is stopped, and the temperature of the device drops to the patient's body temperature, below the phase transition temperature. The connecting piece 52 and the extrusion piece 55 soften, making the skeleton component 5 more easily deformable, making it easier to remove the device from the patient's limb.

[0038] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A medium frequency electrotherapy electrode device, characterized in that: include: A beam-forming layer, which is sheet-shaped and flexible; a wiring assembly for connecting to a medium-frequency electrotherapy device is provided on the beam-forming layer; The skeleton assembly is arranged in the beam layer and includes a plurality of hub units distributed in a rectangular array, and adjacent hub units are connected by connecting pieces; an additional layer, disposed at the bottom of the bundle-shaped layer, for loading the hydrogel and / or the cotton wool sheet; In which, a temperature-controlled limiting structure is provided in the hub unit. When the temperature of the limiting structure is lower than the set temperature, the connecting piece has the freedom to rotate on the hub unit; when the temperature of the limiting structure is higher than the set temperature, the limiting structure fixes the connecting piece to the hub unit.

2. The medium frequency electrotherapy electrode device according to claim 1, characterized in that: The hub unit includes a shell, which has four limit openings. A connecting head is provided at the end of the connecting piece. The connecting head is fixedly connected to the connecting piece through a cylindrical portion. The cylindrical portion is rotatably installed in the limit opening. The end of the limit opening close to the center of the shell is connected to a swing cavity for accommodating the connecting head.

3. The medium frequency electrotherapy electrode device according to claim 2, characterized in that: A sliding cavity communicating with the swing cavity is provided in the housing, and the limiting structure includes: A limit block is slidably mounted in the sliding cavity, wherein one end of the limit block close to the connector is provided with a tooth pattern, and the connector is provided with sharp teeth that cooperate with the tooth pattern; The extrusion piece is arranged in the shell and is used to push the limit block so that the tooth pattern can clamp the sharp teeth.

4. The medium frequency electrotherapy electrode device according to claim 3, characterized in that: The extrusion piece is made of nickel-titanium shape memory alloy material, and the set temperature is the phase transition temperature of the extrusion piece; When the temperature of the extrusion piece is lower than its own phase change temperature, the limit block has the ability to move in the sliding cavity. When the temperature of the extrusion piece is higher than its own phase change temperature, the extrusion piece presses against the limit block, causing the tooth pattern to clamp the sharp teeth.

5. The medium frequency electrotherapy electrode device according to claim 4, characterized in that: The connecting piece is made of nickel-titanium shape memory alloy material, and the phase change temperature of the connecting piece is lower than the phase change temperature of the extrusion piece.

6. The medium frequency electrotherapy electrode device according to claim 3, characterized in that: An extrusion cavity communicated with the sliding cavity is provided in the shell. The extrusion piece is U-shaped and arranged in the extrusion cavity. Two sides of the U shape respectively abut against the limit block and the inner wall of the extrusion cavity away from the limit block.

7. The medium frequency electrotherapy electrode device according to claim 2, characterized in that: The width of the cylindrical portion is smaller than the width of the connecting head, and the width of the limiting opening is larger than the width of the cylindrical portion and smaller than the width of the connecting head.

8. The medium frequency electrotherapy electrode device according to claim 2, characterized in that: The bottom of the shell is provided with a conductive sheet connected to the additional layer.

9. The medium frequency electrotherapy electrode device according to claim 1, characterized in that: The wiring assembly includes a wire and a wiring terminal arranged at one end of the wire, the other end of the wire is connected to the skeleton assembly, and the wiring terminal is connected to the output connector of the medium-frequency electrotherapy instrument.

10. The medium frequency electrotherapy electrode device according to claim 1, characterized in that: A heating wire is arranged in the bundle layer, the heating wire is covered with an insulating film, and a temperature control module for controlling the heating of the heating wire is arranged on the wiring assembly.

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