A radio frequency electrode device with temperature control function

Abstract

This utility model discloses a radio frequency electrode device with temperature control function. The radio frequency electrode device includes an inner electrode, which comprises an inner tube and an outer tube. The outer tube includes an electrode output section. A temperature sensor is disposed inside the inner tube. The inner tube includes a fixing component that fixes the position and orientation of the temperature sensor. The outer tube is sleeved on the outside of the inner tube. This utility model's technical solution, by fixing the position and orientation of the temperature sensor, ensures that the temperature sensor can stably contact the target object, thereby improving the accuracy of temperature acquisition.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a radio frequency electrode device with temperature control function. Background Technology

[0002] Radiofrequency liposuction uses radiofrequency electrodes to selectively destroy subcutaneous fat cells, which are then removed through the body's metabolism or with the aid of a suction device. Some radiofrequency liposuction devices include an inner electrode and an outer electrode. The inner electrode penetrates deep into the subcutaneous fat tissue, heating the fat cells to an effective decomposition temperature. To prevent the treatment temperature of the inner electrode from being too high or too low, a temperature sensor is usually built into the inner electrode for temperature monitoring.

[0003] During treatment, the internal electrode penetrates deep into the adipose tissue and moves within different tissues. Changes in contact pressure or position can cause inaccurate temperature readings from the temperature sensor, resulting in lag, drift, and fluctuating temperature readings. Furthermore, during the movement of the internal electrode, the temperature sensor probe is prone to shifting relative to the adipose tissue, preventing stable contact and affecting the accuracy of temperature readings. The accuracy of temperature information acquisition directly impacts the control system's decisions, potentially leading to insufficient energy output for poor treatment results or excessive energy output causing burns. Utility Model Content

[0004] The main purpose of this invention is to propose a radio frequency electrode device with temperature control function, which aims to improve the accuracy of radio frequency electrode temperature acquisition and thus ensure accurate temperature monitoring.

[0005] To achieve the above objectives, this utility model proposes a radio frequency electrode device with temperature control function for monitoring temperature changes of the radio frequency electrode. The radio frequency electrode device includes an inner electrode, which comprises an outer tube and an inner tube. The outer tube includes an electrode output section. A temperature sensor is housed inside the inner tube, which includes a fixing component that fixes the position and orientation of the temperature sensor. The outer tube is fitted over the outer side of the inner tube. In this technical solution, the fixing component in the inner tube fixes the position of the temperature sensor, ensuring that the temperature sensor remains fixed within the inner tube during the movement of the inner electrode, preventing displacement and inaccurate temperature measurements. Furthermore, the fixing component also fixes the orientation of the temperature sensor, preventing the temperature sensor probe from shifting. With this configuration, during the use of the inner electrode, the fixing component ensures that the temperature sensor position is relatively fixed, preventing the temperature sensor probe from shifting, thereby improving the accuracy of temperature acquisition.

[0006] In one embodiment, a temperature sensor is provided at the end of the inner tube. This technical solution uses a fixing component to fix the temperature sensor at the end of the inner tube, allowing the temperature sensor to be closer to the target object, thereby improving the accuracy of the measurement.

[0007] In one embodiment, a fixing component secures the temperature sensor probe so that the probe always faces the target object. The target object to be monitored by the temperature sensor includes the electrode output section located at the end of the outer tube. This technical solution, by fixing the temperature sensor probe towards the target object, enables the probe to more accurately reflect the temperature at that end.

[0008] In one embodiment, an insulating protective layer is provided on the surface of the temperature sensor probe. This technical solution protects the temperature sensor probe by providing an insulating protective layer on its surface, preventing impurities from clogging it.

[0009] In one embodiment, a gap is provided between the temperature sensor probe and the wall of the inner tube. This technical solution ensures that the temperature sensor probe is not affected by the temperature of the inner tube wall by leaving a gap between the temperature sensor probe and the tube wall.

[0010] In one embodiment, the inner tube includes at least one welding position for fixing the outer tube. This arrangement ensures that there is no shaking between the inner and outer tubes of the inner electrode, thereby improving the stability of the dual-tube structure of the inner electrode.

[0011] In one embodiment, the radio frequency electrode device with temperature control function further includes an external electrode, which has an internal groove, and a thermistor is disposed in the internal groove. This technical solution monitors the temperature of the external electrode by embedding a thermistor inside the external electrode.

[0012] In one embodiment, the external electrode includes a contact surface and a protrusion away from the contact surface. A thermistor is disposed in the central region of the external electrode, and a fastener is disposed above the thermistor. The fastener has a groove that mates with the protrusion of the external electrode, for clamping the thermistor between the external electrode and the fastener. This technical solution, by placing the thermistor in the central region of the external electrode to monitor the temperature of the central region of the external electrode, accurately reflects the overall thermal effect between the external electrode and the contact surface. Furthermore, by fixing the thermistor to the groove inside the external electrode with the fastener, the thermistor is fixedly connected to the external electrode, improving the stability of the external electrode structure.

[0013] In one embodiment, the external electrode includes thermally conductive silicone to fill the gap between the external electrode and the thermistor. This arrangement ensures that the thermally conductive silicone achieves maximum thermal conductivity, transferring heat to the thermistor and improving the accuracy of the thermistor's monitoring of the external electrode temperature.

[0014] In one embodiment, the radiofrequency electrode device with temperature control function further includes a liposuction device. The liposuction device includes a liposuction interface and an liposuction port on the surface of the inner electrode. The liposuction port is located at the end of the inner electrode facing the target, and the liposuction interface is located at the end of the inner electrode away from the target. The liposuction port and the liposuction interface are connected. This technical solution, by providing a liposuction port on the surface of the inner electrode, with the liposuction port communicating with the liposuction interface, allows liquefied fat tissue to be aspirated through the liposuction port and discharged through the liposuction interface when the inner electrode is used for radiofrequency lipolysis treatment.

[0015] In one embodiment, the liposuction device includes a sealing ring and a pressure block. The sealing ring is disposed at the connection between the liposuction interface and the inner electrode, and covers the outer periphery of the inner electrode near the liposuction interface. The pressure block is disposed outside the inner electrode to secure the inner electrode and the liposuction interface. A protective sleeve is provided on the surface of the liposuction interface. This technical feature, by providing a sealing ring and a pressure block, enables an airtight connection at the connection between the inner electrode and the liposuction interface. Furthermore, by installing a protective sleeve on the surface of the liposuction interface, the liposuction interface can be protected from contamination or damage by external forces.

[0016] In one embodiment, the inner electrode includes a second sensor disposed inside the outer tube and outside the inner tube, for monitoring liposuction efficiency and / or fat status. This technical solution, by installing a second sensor to monitor liposuction efficiency and / or fat liquefaction status during the inner electrode treatment process, prevents insufficient liposuction efficiency or overtreatment, thereby improving treatment safety.

[0017] In one embodiment, the second sensor includes at least one of a flow sensor, a pressure sensor, or an optical sensor. This configuration allows for monitoring of the liposuction process and / or fat condition from the perspective of changes in fat flow, pressure, or optical properties, helping the operator to promptly grasp the liposuction status and improve treatment outcomes.

[0018] In one embodiment, the inner electrode includes an insulating section and a discharge section. The insulating section includes an insulating layer disposed on the surface of the inner electrode, and the surface of the inner electrode has at least two discharge sections. This technical feature achieves zoned discharge by designing at least two discharge layers, enabling zoned transmission of radio frequency energy for treatment in different treatment areas, thereby improving treatment efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1This is a partial schematic diagram of the internal electrode structure;

[0021] Figure 2 This is a schematic diagram of an embodiment of the internal electrode;

[0022] Figure 3 This is a schematic diagram of the internal electrode double-tube welding structure;

[0023] Figure 4 This is a cross-sectional view of section AA of the internal electrode double-tube welded structure;

[0024] Figure 5 This is a schematic diagram of the external structure of the internal electrode;

[0025] Figure 6 This is a schematic diagram of an embodiment of the radio frequency electrode device;

[0026] Figure 7 This is a partially enlarged schematic diagram of section A in an embodiment of the radio frequency electrode device;

[0027] Figure 8 This is a schematic diagram of a liposuction device.

[0028] Figure 9 This is a schematic diagram of an embodiment of a liposuction device;

[0029] Explanation of icon numbers:

[0030] label name label name 1 internal electrode 123 Insulation protective layer 11 outer tube 13 Insulation section 111 Electrode output section 14 Discharge section 112 Welding position 2 external electrode 113 liposuction incision 21 Thermistor 114 liposuction interface 22 fastener 115 Second sensor 23 Thermal conductive silicone 12 Inner tube 3 grip section 121 Temperature sensor 31 sealing ring 1211 Temperature sensor probe 32 Press block 122 Fixed components 33 Protective Case

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] Radiofrequency (RF) electrode devices use RF electrodes to emit radiofrequency energy to liquefy fat or tighten skin. The device includes an inner electrode that extends into the skin and releases RF energy in the treatment area. This causes polar molecules to resonate and collide, generating a large amount of heat, thereby stimulating collagen regeneration and liquefying fat tissue. During use, the inner electrode is inserted into the treatment area and moved back and forth between treatment areas. The inner electrode continuously and stably outputs RF energy to the treatment area, causing polar molecules in the body to oscillate and rotate at high frequency, producing a biothermal effect in the treatment area. This not only stimulates collagen regeneration for skin tightening but also heats fat cells, bringing them to an effective decomposition temperature, thus liquefying fat.

[0036] During treatment, the radiofrequency energy emitted by the internal electrode may be too high or too low, resulting in excessively high or low temperatures in the treatment area. Therefore, temperature sensors are often used to monitor temperature changes in the radiofrequency electrode to provide feedback and adjust the output of radiofrequency energy. Although existing technologies use temperature sensors to monitor the temperature of the radiofrequency electrode, the temperature sensor shifts relative to the target object during the movement of the radiofrequency electrode. This causes the temperature sensor to be unable to stably monitor the temperature of the target object, thus affecting the accuracy of temperature acquisition.

[0037] In order to achieve accurate temperature monitoring by the temperature sensor, this utility model proposes a radio frequency electrode device with temperature control function. The radio frequency electrode device includes an inner electrode, which includes an outer tube and an inner tube. The outer tube includes an electrode output part. The temperature sensor is installed inside the inner tube. The inner tube includes a fixing component that fixes the position and orientation of the temperature sensor. The outer tube is sleeved on the outside of the inner tube.

[0038] The following are specific embodiments of this utility model:

[0039] Example 1:

[0040] like Figure 1 , Figure 1This is a partial schematic diagram of the internal electrode structure. The internal electrode 1 includes an outer tube 11 and an inner tube 12. An electrode output section 111 is disposed on the surface of the outer tube 11. The inner tube 12 is disposed inside the outer tube 11, and a temperature sensor 121 and a fixing assembly 122 are disposed inside the inner tube 12. The electrode output section 111 on the outer tube 11 is used to emit radio frequency energy deep into the skin. The temperature sensor 121 in the inner tube 12 is used to monitor the temperature of the internal electrode 1. The fixing assembly 122 is used to fix the position and orientation of the temperature sensor 121.

[0041] Furthermore, the fixing component 122 ensures that the temperature sensor 121 is located at the end of the inner tube 12 by fixing its position, allowing the temperature sensor 121 to be closer to the target object. The fixing component 122 also fixes the orientation of the temperature sensor probe 1211, ensuring that the temperature sensor probe 1211 always faces the target object. Specifically, the temperature sensor 121 is used to monitor the temperature of the electrode output section 111 located at the end of the outer tube 11. By fixing the temperature sensor probe 1211 towards the end where the electrode output section 111 is located by the fixing component 122, the temperature sensor 121 can accurately detect temperature changes in the electrode output section 111.

[0042] In one specific embodiment, a gap exists between the probe 1211 of the temperature sensor and the wall of the inner tube 12 to prevent the temperature sensor 121 from being affected by the temperature of the inner tube 12 wall, thereby improving the accuracy of temperature sensor 121 data acquisition. For example, when used in radiofrequency lipolysis treatment, since fat liquefaction requires reaching an effective decomposition temperature, the operating temperature of the inner electrode 1 is typically set between 55 and 70°C to ensure that the fat tissue reaches the decomposition temperature. When the temperature sensor 121 detects that the temperature of the inner electrode 1 exceeds the preset range, it feeds a signal back to the host to stop the radiofrequency energy input. The fixing component 122 can be a slot, a step, or an elastic clamping component.

[0043] In a further implementation, such as Figure 2 , Figure 2 This is a schematic diagram of an embodiment of the inner electrode as described above. An insulating protective layer 123 is coated on the surface of the inner tube 12. The insulating protective layer 123 is located at the end of the inner tube 12 closest to the target object and protects the temperature sensor 121. By coating the surface of the inner tube 12 with the insulating protective layer 123, the service life of the temperature sensor 121 can be extended, and the temperature sensor probe 1211 can be prevented from being blocked by debris. Especially when the inner electrode 1 is used for fat treatment, liquefied fat tissue can easily cause blockage of the temperature sensor probe 1211. Specifically, the insulating protective layer 123 can be a phenelzine coating.

[0044] Furthermore, such as Figure 3 and Figure 4 As shown, Figure 3 This is a schematic diagram of the internal electrode double-tube welding structure. Figure 4 yes Figure 3 A cross-sectional view of the double-tube welded structure of the inner electrode at point AA. As described above, the inner tube 12 and outer tube 11 of the inner electrode 1 are connected by welding to fix them in place. By fixing the inner electrode 1 with welding, the inner tube 12 and outer tube 11 are prevented from shaking during the movement of the inner electrode 1, thus ensuring the temperature sensor 121 remains in a fixed position and improving the accuracy of temperature acquisition. After the inner tube 12 and outer tube 11 are assembled, multiple sets of welding positions 112 are designed axially along the inner electrode 1. The axially distributed welding positions 112 can be located at the near end, far end, or middle section of the inner and outer tubes. The specific welding method can be laser welding equipment.

[0045] In one implementation, such as Figure 5 , Figure 5 This is a schematic diagram of the external structure of the inner electrode. As described above, the inner electrode 1 also includes an insulating section 13 and a discharge section 14. The surface of the insulating section 13 is covered with an insulating film, which isolates electric field energy. The discharge section 14 directly exposes the electrode output section 111 for radio frequency energy release. At least two discharge sections 14 are provided on the surface of the inner electrode 1, separated from adjacent discharge sections 14 by the insulating section 13, thereby achieving segmented release of radio frequency energy. The insulating film can be made of materials with insulating properties, such as polytetrafluoroethylene or parylene.

[0046] Example 2:

[0047] like Figure 6 , Figure 6 This is a schematic diagram of an embodiment of a radiofrequency electrode device. Specifically, the radiofrequency electrode device is a radiofrequency lipolysis treatment device, including a main unit and a handle. The handle is provided with an inner electrode 1, an outer electrode 2 and a gripping part 3. The inner electrode 1 and the outer electrode 2 are provided at the front end of the gripping part 3. The inner electrode 1 and the outer electrode 2 are connected to the main unit through wires.

[0048] The specific principle is that the inner electrode 1 is inserted into the skin, while the outer electrode 2 is attached to the skin surface. The radio frequency current forms a current circuit through the human body. Because the fat tissue has impedance, when the current flows through the area where the fat tissue is located, local Joule heating is generated due to the existence of impedance. When the heat rises to 55-70℃, the effective decomposition temperature of the fat tissue is reached, thereby achieving the purpose of fat cell liquefaction.

[0049] In practical applications, the operator holds the gripping part 3 and inserts the inner electrode 1 into the area requiring fat reduction. The outer electrode 2 is attached to the skin. The inner electrode 1 outputs radiofrequency energy to the fat treatment area, causing the polar molecules in the fat cells to resonate in the high-frequency electric field. This generates a large amount of heat due to intermolecular friction and collisions, causing the fat cells to liquefy. Furthermore, the operator can control the movement range of the inner electrode 1 through the gripping part 3, allowing it to move between different areas of fat tissue for targeted treatment.

[0050] It should be noted that, as mentioned above, the inner tube 12 of the inner electrode 1 is equipped with a temperature sensor 121 for monitoring the temperature of the inner electrode 1. The structure and function of the inner electrode 1 will not be described again here.

[0051] Combination Figure 6 and Figure 7 , Figure 7 yes Figure 6 A partially enlarged schematic diagram of embodiment A of the radio frequency electrode device includes an external electrode 2, a thermistor 21, thermally conductive silicone 23, and a fastener 22. The thermistor 21 is disposed in a groove inside the external electrode 2, and the thermistor 21 is located in the central region of the external electrode 2. The external electrode 2 includes a contact surface that contacts the skin and a protruding structure away from the contact surface. The fastener 22 is located above the thermistor 21, and the internal groove of the fastener 22 cooperates with the protruding structure of the external electrode 2 to fix the thermistor 21 between the external electrode 2 and the fastener 22. By fixing the thermistor 21 in the central region of the external electrode 2 with the fastener 22, the position of the thermistor 21 is prevented from being too close to the edge of the external electrode 2, which would affect the accuracy of temperature monitoring, thus ensuring that the thermistor 21 can accurately reflect the temperature changes of the external electrode 2. The thermistor 21 may be a PTC or NTC, and the fastener 22 may be a clip, screw, or other mechanical part used to fix two or more components.

[0052] In practical applications, when the external electrode 2 is attached to the human skin, in order to avoid burning the skin, the working temperature of the external electrode 2 is usually set between 35 and 45°C, and it is connected to the main unit of the device through a wire to monitor the temperature of the external electrode 2 in real time and avoid the risk of burning the skin.

[0053] Furthermore, such as Figure 7 As shown, thermally conductive silicone 23 fills the gap between the external electrode 2 and the thermistor 21. Multiple pieces of thermally conductive silicone 23 may be used. By filling the gap between the external electrode 2 and the thermistor 21 with thermally conductive silicone 23, the heat generated by the external electrode 2 is transferred to the thermistor 21. Due to the good thermal conductivity of the thermally conductive silicone 23, the thermistor 21 can quickly and accurately reflect the actual temperature of the external electrode 2. Specifically, the thermally conductive silicone 23 can be a thermally conductive silicone pad.

[0054] exist Figure 6 In the illustrated embodiment, the external electrode is connected to the grip portion 3 of the handle via a connecting rod and extends above the electrode output portion of the internal electrode. In other embodiments of this application, the external electrode can also be a patch structure, which establishes a radio frequency current loop with the internal electrode by being attached to the skin surface. This patch structure can be connected to a radio frequency source via a wire.

[0055] The above embodiments describe a device structure where the positive and negative electrodes of the radiofrequency electrode are respectively disposed on two separate components: an inner electrode and an outer electrode. In another embodiment, the radiofrequency electrode device may include only an inner electrode and exclude the outer electrode. The inner electrode has an end with electrode outputs of opposite polarity, and both the positive and negative electrodes can be simultaneously disposed on the surface of the inner electrode. In this type of embodiment, by inserting the inner electrode into the target tissue (such as adipose tissue), a radiofrequency current loop can be directly established between the positive and negative electrode outputs on the surface of the inner electrode, thereby widening the treatment area between the electrode outputs of opposite polarity and achieving short-range radiofrequency treatment. For example, see reference... Figure 5 In this embodiment, the discharge segment 14 in the figure can be replaced by a combination of a positive electrode and a negative electrode. Specifically, the positive electrode and the negative electrode can be a pair or multiple pairs of electrode groups, each pair of electrode groups consisting of a positive electrode and a negative electrode, so that radio frequency energy is conducted between the positive electrode and the negative electrode.

[0056] Example 3:

[0057] The radiofrequency electrode device described above also includes a liposuction device with liposuction function for use in radiofrequency lipolysis treatment. The radiofrequency electrode device may also include only an inner electrode and exclude the outer electrode. The inner electrode has an electrode output section at its end.

[0058] It should be noted that the structural features of the inner electrode are as described in Embodiment 1, and the structural features of the outer electrode are as described in Embodiment 2. Here, the liposuction function of the radiofrequency electrode device is described in detail.

[0059] like Figure 8 , Figure 8 This is a schematic diagram of a liposuction device, which includes an inner electrode 1, an outer electrode 2, and a gripping part 3. The inner electrode 1 includes an inner tube 12 and an outer tube 11. A liposuction port 113 is provided on the surface of the outer tube 11 of the inner electrode 1, near the target object, and a liposuction interface 114 is provided at the other end of the outer tube 11. As described in Embodiment 1, the inner electrode 1 has a tubular structure inside, and the outer tube 11 has a hollow channel inside. The liposuction port 113 and the liposuction interface 114 are connected. The liposuction interface 114 can be, for example, a Luer connector or a quick-connect connector.

[0060] In practical applications, the inner electrode 1 heats the adipose tissue by releasing radio frequency energy. The liquefied adipose tissue is drawn in through the liposuction port 113, flows through the hollow channel located inside the outer tube 11, and is then discharged through the liposuction interface 114. By setting the liposuction port 113 and the liposuction interface 114, the adipose tissue can be removed during lipolysis treatment to prevent it from remaining in the body and causing harm.

[0061] Furthermore, such as Figure 8 , Figure 8 This is a schematic diagram of the liposuction device. As described above, the liposuction device also includes a sealing ring 31 and a pressure block 32. The sealing ring 31 is located at the end of the inner electrode 1 near the liposuction interface 114 and covers the outer periphery of the inner electrode 1, forming an annular sealing structure. The pressure block 32 is located outside the inner electrode 1, outside the sealing ring 31. When the pressure block 32 is pressed, it causes the sealing ring 31 to fit tightly against the outer wall of the inner electrode 1, ensuring an airtight environment at the connection between the inner electrode 1 and the liposuction interface 114. For example, the sealing ring 31 can be an O-ring, and the pressure block 32 can be a snap ring.

[0062] In one specific embodiment, a protective sleeve 33 is provided on the surface of the liposuction port 114. The protective sleeve 33 is fitted over the outside of the liposuction port 114 to protect it. The liposuction device also includes a main unit, a vacuum negative pressure pump, a suction tube and a fat storage tank, and a housing (not shown in the figure). The vacuum negative pressure pump is located in the main unit, and the suction tube is located on the outer wall of the housing. The end of the suction tube is connected to the fat storage tank. The vacuum negative pressure pump creates negative pressure to draw liquefied fat tissue from the suction tube into the fat storage tank, thereby reducing the accumulation of fat tissue in the human body.

[0063] like Figure 9 , Figure 9 This is an internal cross-sectional view of an embodiment of the liposuction device. As described above, the liposuction device also includes a second sensor 115. The second sensor 115 is installed inside the outer tube 11 of the inner electrode 1 and located outside the inner tube 12. It is used to monitor liposuction efficiency and / or fat condition, including monitoring changes in fat flow rate, fat viscosity, or fat color. By monitoring liposuction efficiency and / or fat tissue condition through the second sensor 115, and connecting it to the main unit of the device via a wire, the operator can better judge the degree of fat reduction treatment.

[0064] Specifically, Figure 9The second sensor 115 shown includes a flow sensor, a pressure sensor, and / or an optical sensor. The flow sensor monitors changes in the fat flow rate within the internal electrode 1, preventing the liposuction process from being too fast or too slow. After fat liquefaction, the pressure distribution within the adipose tissue changes; the pressure sensor detects these pressure changes to determine the degree of liquefaction. Furthermore, adipose tissue undergoes changes in its optical properties, including absorption and scattering characteristics; monitoring these changes using an optical sensor also helps determine the fat's state. The second sensor 115 may have one or more different types of sensors for monitoring liposuction efficiency and / or the fat's state.

[0065] This application proposes a radiofrequency electrode device with temperature control function. The radiofrequency electrode device can be an electrode assembly including an internal electrode, a treatment handpiece, or a radiofrequency therapy device. It is understood that the device and components described above can be implemented in other ways. The device embodiments described above are merely illustrative; components or modules can be selected and combined according to actual needs to achieve the purpose of this solution. For example, the radiofrequency electrode device can be a separate detachable module on the handpiece, or it can be a device composed of two or more detachable modules.

[0066] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A radio frequency electrode device with temperature control function, comprising an internal electrode, characterized in that, include: The outer tube includes an electrode output section; The inner tube contains a temperature sensor and includes a fixing component that fixes the position and orientation of the temperature sensor. The outer tube is sleeved on the outside of the inner tube.

2. The radio frequency electrode device with temperature control function as described in claim 1, characterized in that, The temperature sensor is installed at the end of the inner tube.

3. The radio frequency electrode device with temperature control function as described in claim 2, characterized in that, The fixing component secures the probe of the temperature sensor so that the probe of the temperature sensor always faces the target object.

4. The radio frequency electrode device with temperature control function as described in claim 3, characterized in that, The surface of the temperature sensor probe is provided with an insulating protective layer.

5. The radio frequency electrode device with temperature control function as described in claim 3, characterized in that, A gap is provided between the probe of the temperature sensor and the wall of the inner tube.

6. The radio frequency electrode device with temperature control function as described in claim 1, characterized in that, The inner tube includes at least one welding position for fixing the outer tube.

7. The radio frequency electrode device with temperature control function as described in claim 1, characterized in that, It also includes an external electrode for coupling with the internal electrode. The external electrode includes an internal groove, and a thermistor is disposed in the internal groove for detecting the temperature of the external electrode.

8. The radio frequency electrode device with temperature control function as described in claim 7, characterized in that, The external electrode includes a contact surface and a protrusion away from the contact surface. The thermistor is disposed in the central region of the external electrode. A fastener is disposed above the thermistor. The fastener has a groove that mates with the protrusion of the external electrode, for clamping the thermistor between the external electrode and the fastener.

9. The radio frequency electrode device with temperature control function as described in claim 7, characterized in that, The external electrode includes thermally conductive silicone, used to fill the gap between the external electrode and the thermistor.

10. The radio frequency electrode device with temperature control function as described in claim 1, characterized in that, It also includes a liposuction device, which includes a liposuction interface. The surface of the inner electrode is provided with a liposuction port, which is located at the end of the inner electrode facing the target object. The liposuction interface is located at the end of the inner electrode away from the target object. The liposuction port and the liposuction interface are connected through a channel between the inner tube and the outer tube.

11. The radio frequency electrode device with temperature control function as described in claim 10, characterized in that, The liposuction device includes a sealing ring and a pressure block. The sealing ring is disposed at the connection between the liposuction interface and the inner electrode. The sealing ring covers the outer periphery of the inner electrode near the liposuction interface. The pressure block is disposed outside the inner electrode and is used to fasten the inner electrode and the liposuction interface. The surface of the liposuction interface is provided with a protective sleeve.

12. The radio frequency electrode device with temperature control function as described in claim 10, characterized in that, The inner electrode includes a second sensor, which is located inside the outer tube and outside the inner tube, for monitoring liposuction efficiency and / or fat status.

13. The radio frequency electrode device with temperature control function as described in claim 12, characterized in that, The second sensor includes at least one of a flow sensor, a pressure sensor, or an optical sensor.

14. The radio frequency electrode device with temperature control function as described in claim 1, characterized in that, The inner electrode includes an insulating section and a discharge section. The insulating section includes an insulating layer disposed on the surface of the inner electrode, and the surface of the inner electrode is provided with at least two discharge sections.

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