System and method for testing working temperature of energy generator

Abstract

The invention discloses a system and method for testing the working temperature of an energy generator, and belongs to the field of medical instruments. The system comprises an energy generator to be tested, a temperature measuring device and a thermocouple device, wherein the energy generator comprises a plasma electric cutting ring and a power supply module. The power supply module is used for emitting radio frequency electric energy to the plasma electric resection ring, and the plasma electric resection ring is driven by the radio frequency electric energy to perform electric resection or electric coagulation operation on a biological tissue sample in normal saline; the thermocouple device is rigidly fixed with the plasma electric resection ring through a clamp, the thermocouple device is used for sensing the real-time temperature change of the plasma electric resection ring, generating a temperature sensing signal and transmitting the temperature sensing signal to the temperature measuring device, and the temperature measuring device obtains the working temperature of the plasma electric resection ring in real time according to the temperature sensing signal. According to the invention, reliable and safe on-line monitoring of the working temperature of the energy generator under the real electric resection / electric coagulation working condition is realized.

Description

Technical Field

[0001] This invention belongs to the field of medical devices, specifically relating to a working temperature testing system and method for an energy generator. Background Technology

[0002] Energy generators, also known as energy surgical equipment, mainly consist of scalpel electrodes and a power module. In urological and obstetric surgeries, plasma resection rings are the most commonly used type of scalpel electrode. When performing electrosurgical procedures using a plasma resection ring, a low-temperature plasma is formed around the ring. The large number of high-energy particles carried by this low-temperature plasma can break the molecular bonds between cells, achieving surgical effects such as electroresection and electrocoagulation.

[0003] The operating temperature of plasma resection rings is generally considered to be relatively low (40~70℃). However, in actual cutting processes, eschar and carbonization of tissue frequently occur; the temperature of saline injected into the body can exceed 60℃ when it is drained. It can be inferred that the actual operating temperature of the plasma resection ring should be higher than the empirical value. If the actual temperature is much higher than expected, heat may diffuse deeper into the tissue, causing irreversible delayed thermal damage to nerves, blood vessels, muscles, or adjacent organs (such as the intestines) that should not be damaged. Therefore, it is necessary to accurately measure the true operating temperature of the plasma resection ring in the energy generator.

[0004] Because the plasma cutting ring is immersed in a brine solution, non-contact temperature measurement methods such as thermal imaging cannot be used for testing. If contact temperature measurement methods such as thermocouples are used, the test results will be affected by the high-voltage discharge of the plasma blade (the discharge voltage is high, hundreds to thousands of volts), which not only greatly affects the weak signal of the temperature sensor but can even easily damage the sensor signal acquisition equipment. Therefore, online monitoring of the operating temperature of the plasma cutting ring is extremely difficult.

[0005] To address the above problems, this invention proposes a testing system and method for testing the operating temperature of an energy generator. Summary of the Invention

[0006] To address the problems in the prior art, this invention provides a system and method for testing the operating temperature of an energy generator.

[0007] The technical solution of the present invention is as follows: In a first aspect, the present invention discloses a working temperature testing system for an energy generator, comprising an energy generator to be tested, a temperature measuring device, a heating stage, and a thermocouple device; the energy generator comprises a plasma electrosurgical ring and a power module, the power module being used to transmit radio frequency power to the plasma electrosurgical ring, and under the drive of the radio frequency power, the plasma electrosurgical ring performing electrosurgical cutting or electrocoagulation operations on biological tissue samples placed in physiological saline. The thermocouple device includes a coaxially arranged thermocouple, a ceramic inner tube, and a ceramic outer tube closed at one end. The thermocouple is fitted inside the ceramic inner tube, and the ceramic inner tube is fitted inside the ceramic outer tube. The ceramic inner tube provides support for the thermocouple leads to give the leads rigidity. The thermocouple leads are bonded to the closed end of the ceramic outer tube to ensure that heat can be transferred from the ceramic outer tube to the thermocouple. The heating stage is used to heat physiological saline and biological tissue samples therein to simulate the actual working environment of the plasma electrosurgical loop. The thermocouple device is rigidly fixed to the plasma cutting ring by a clamp, and the closed end of the thermocouple device forms a thermal connection with the surface of the plasma cutting ring. The thermocouple device is used to sense the real-time temperature change of the plasma cutting ring, generate a temperature difference voltage signal and transmit it to the temperature measuring device. The temperature measuring device obtains the working temperature of the plasma cutting ring in real time based on the temperature difference voltage signal.

[0008] Furthermore, the temperature measuring device obtains the operating temperature of the plasma electrosurgical ring in real time based on the voltage signal, including: The temperature measuring device converts the temperature difference voltage signal into a digital signal, obtains the temperature value measured by the thermocouple device based on the digital signal and the calibration table corresponding to the thermocouple, and then obtains the working temperature of the plasma electro-cutting ring in real time based on the temperature value measured by the thermocouple device. The formula for calculating the operating temperature of the plasma electrosurgical ring is as follows: ; in, This refers to the operating temperature of the plasma electrosurgical ring. It is a time constant; The temperature value measured by the thermocouple device; For time.

[0009] Furthermore, the time constant is obtained. The methods include: A thermocouple of the same model as the thermocouple in the thermocouple assembly, along with the thermocouple assembly itself, was placed in heated physiological saline. Temperature values ​​measured by the thermocouple and the thermocouple assembly were obtained separately using a temperature acquisition card. The temperature value measured by the thermocouple was used as the... The temperature value measured by the thermocouple device is used as... ; Obtain multiple sets of temperature values and the corresponding temperature value and the rate of temperature change Substitute each set of data into the formula In this process, the time constant is obtained through data fitting. .

[0010] Secondly, this invention also discloses a method for testing the operating temperature of the energy generator of the system, comprising the following steps: Biological tissue samples are placed in physiological saline, and the physiological saline and biological tissue samples are heated using a heating stage to simulate the actual working environment of the plasma electrosurgical resection ring; then the thermocouple device is rigidly fixed to the plasma electrosurgical resection ring by a clamp; wherein, the closed end of the thermocouple device forms a thermal connection with the surface of the plasma electrosurgical resection ring. The power module sends radio frequency (RF) power to the plasma electrosurgical ring. Driven by the RF power, the plasma electrosurgical ring performs electrosurgical cutting or electrocoagulation on biological tissue samples placed in physiological saline. Simultaneously, the thermocouple device senses the real-time temperature change of the plasma electrosurgical ring, generates a temperature difference voltage signal, and transmits it to the temperature measuring device. The temperature measuring device converts the temperature difference voltage signal into a digital signal. Based on the digital signal and the calibration table corresponding to the thermocouple in the thermocouple device, the temperature value measured by the thermocouple device is obtained. Then, based on the temperature value measured by the thermocouple device, the operating temperature of the plasma electrosurgical ring is obtained in real time, realizing the testing of the operating temperature of the energy generator.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: 1) This invention employs a multi-layered protective structure of “ceramic outer tube-thermocouple-ceramic inner tube” for testing the working temperature of the plasma cutting ring. The ceramic outer tube has excellent thermal conductivity and electrical insulation, which efficiently transfers the heat from the surface of the plasma cutting ring to the thermocouple sensing end. On the other hand, it effectively shields the weak thermocouple signal from the interference of high-frequency discharge voltages of hundreds to thousands of volts and protects the signal acquisition equipment from high-voltage breakdown damage. Thus, reliable and safe online monitoring of the working temperature of the plasma cutting ring (i.e., the energy generator) is achieved under actual cutting / coagulation working conditions.

[0012] 2) The present invention designs a rigid fixation of the plasma electrosurgical ring and the movable thermocouple device, which accurately obtains the real-time temperature of the contact area between the electrosurgical ring and the tissue during the cutting process, thus enabling accurate acquisition of the working temperature of the plasma electrosurgical ring (i.e., the energy generator).

[0013] 3) This invention addresses the heat transfer delay phenomenon caused by the ceramic outer tube by establishing a first-order heat transfer system that includes a time constant. The actual time constant is obtained through calibration experiments. This first-order heat transfer system is used to correct the measured temperature data of the mobile thermocouple device, thereby restoring the true working temperature of the plasma electric cutting ring (i.e., the energy generator), which significantly improves the accuracy of the temperature measurement results and the dynamic response capability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the working temperature testing system for the energy generator of the present invention; Figure 2 This is a schematic diagram of the main device of the working temperature testing system for the energy generator of the present invention; Figure 3 This is a structural diagram of the movable thermocouple device of the present invention; Figure 4 This is a schematic diagram of the clamp of the present invention; Figure 5 This is an assembly diagram of the clamp, plasma cutting ring, and movable thermocouple device of the present invention; Figure 6 This is a structural diagram of the system for obtaining the time constant in this invention. Detailed Implementation

[0015] The present invention will be further described and illustrated below with reference to specific embodiments. The embodiments described are merely examples of the content of this disclosure and do not limit the scope of the invention. The technical features of each embodiment in the present invention can be combined accordingly, provided that there is no mutual conflict.

[0016] This invention proposes a system and method for testing the operating temperature of an energy generator. The energy generator includes a plasma electrosurgical loop and a power supply module. Therefore, the operating temperature test of the energy generator is the same as the operating temperature test of the plasma electrosurgical loop. This invention can evaluate the temperature of the electrode-tissue contact area of ​​the plasma electrosurgical loop placed in physiological saline during electrosurgical / electrocoagulation operations.

[0017] This invention uses thermocouples for temperature measurement and proposes a multi-layer protection structure of "ceramic outer tube - thermocouple - ceramic inner tube". The ceramic outer tube can play a role in efficient heat conduction and high-pressure shielding, while the ceramic inner tube provides support for the thermocouple and facilitates assembly with the ceramic outer tube.

[0018] This invention proposes a thermocouple placement method to accurately test the temperature change at a fixed temperature measuring point on the tissue and the working temperature of a constantly moving plasma cutting ring. Multiple thermocouple devices are evenly arranged on the moving path of the plasma cutting ring, and another thermocouple device is fixedly connected to the plasma cutting ring and moves with the plasma cutting ring.

[0019] This invention also proposes a temperature compensation method to further eliminate the temperature testing delay caused by the ceramic heat transfer process and achieve accurate temperature assessment.

[0020] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0021] like Figure 1 and Figure 2As shown, this invention proposes a working temperature testing system for an energy generator. The system mainly includes a quartz square cylinder 2, physiological saline 3, an energy generator to be tested for its working temperature, a heating platform 5, a high thermal conductivity silicone grease plate 6, a transparent heat insulation cover 7, a clamp 8, a rotary displacement stage 9, a slide rail support 10, a movable thermocouple device 12, multiple fixed thermocouple devices 13, a temperature acquisition card 14, and a host computer 15. The energy generator includes a plasma electrocautery ring 4 and a power module 11.

[0022] A quartz square cylinder 2 is used to hold biological tissue sample 1 and physiological saline 3, wherein biological tissue sample 1 is immersed in physiological saline 3. A heating stage 5 is used to heat the biological tissue sample 1 and physiological saline 3 in the quartz square cylinder 2 to simulate the actual working environment of the plasma electrosurgical resection ring. A multi-layer high thermal conductivity silicone grease plate 6 is installed between the quartz square cylinder 2 and the heating stage 5 to prevent electromagnetic interference from the heating stage 5 from affecting the working temperature of the plasma electrosurgical resection ring 4 obtained during testing. A transparent heat insulation cover 7 is used to cover the quartz square cylinder 2 to reduce heat loss from the biological tissue sample 1 and physiological saline 3 to the environment, ensuring the thermal stability of the system.

[0023] The power module 11 is used to send radio frequency power to the plasma electrosurgical ring 4. Driven by the radio frequency power, the plasma electrosurgical ring 4 performs electrosurgical cutting or electrocoagulation on the biological tissue sample 1 placed in physiological saline 3.

[0024] like Figure 3 As shown, the movable thermocouple device 12 is the same as the fixed thermocouple device 13. Both the movable thermocouple device 12 and the fixed thermocouple device 13 include a coaxially arranged thermocouple, a ceramic inner tube, and a ceramic outer tube closed at one end. The thermocouple is fitted inside the ceramic inner tube, and the ceramic inner tube is fitted inside the ceramic outer tube. The ceramic inner tube provides support for the thermocouple leads to give the leads rigidity. The thermocouple leads are bonded to the closed end of the ceramic outer tube to ensure that heat can be transferred from the ceramic outer tube to the thermocouple.

[0025] The mobile thermocouple device 12 is rigidly fixed to the plasma cutting ring 4 by the clamp 8, and the closed end of the mobile thermocouple device 12 forms a thermal connection with the surface of the plasma cutting ring 4. The mobile thermocouple device 12 is used to sense the real-time temperature change of the plasma cutting ring 4, generate a temperature difference voltage signal and transmit it to the temperature acquisition card 14. The temperature acquisition card 14 is used to convert the temperature difference voltage signal into a digital signal. Based on the digital signal, the temperature value measured by the thermocouple device is obtained according to the calibration table (i.e., temperature-electromotive force comparison table) corresponding to the thermocouple in the mobile thermocouple device 12, and the temperature value measured by the thermocouple device is uploaded to the host computer 15 in real time. The host computer is used to obtain the working temperature of the plasma cutting ring in real time based on the received temperature value.

[0026] The rigidly fixed movable thermocouple device 12 and plasma cutting ring 4 are fixed on the slide rail bracket 10 by the rotary displacement stage 9. The slide rail bracket 10 is used to ensure that the plasma cutting ring 4 moves in the horizontal direction during the cutting process, and the rotary displacement stage 9 is used to adjust the cutting angle of the plasma cutting ring 4.

[0027] During electrosurgical cutting or electrocoagulation, radio frequency energy from the power module 11 is applied to the biological tissue sample 1 via the plasma electrosurgical ring 4. The biological tissue sample 1 is placed on the heating stage 5, and a high thermal conductivity silicon plate 6 is placed between the biological tissue sample 1 and the heating stage 5. A transparent heat insulation cover 7 is used to keep the biological tissue sample 1 warm. The biological tissue sample 1 is used as the sample to be tested.

[0028] The plasma cutting ring 4 and the movable thermocouple device 12 are fixed on the clamp 8 to achieve online monitoring of the working temperature of the plasma cutting ring 4. Multiple fixed thermocouple devices 13 are sequentially arranged on the moving path of the plasma cutting ring 4 on the biological tissue sample 1 to test the temperature fluctuation of a certain point on the biological tissue sample 1 over time. The temperature data measured by the movable thermocouple device 12 and the fixed thermocouple device 13 are collected by the temperature acquisition card 14 and transmitted to the host computer 15 for processing.

[0029] The main components of the testing system, such as Figure 2 As shown. First, an excised tissue (100 mm × 100 mm × 50 mm) was used as biological tissue sample 1. Biological tissue sample 1 was placed in a quartz square cylinder 2, and about 250 ml of physiological saline 3 was added to the quartz square cylinder 2 to ensure that the physiological saline 3 covered the electrode part of biological tissue sample 1 and plasma electrocautery ring 4.

[0030] During actual surgery, the internal tissue temperature is approximately 37°C, and the temperature of the injected saline solution is close to human body temperature. Therefore, a quartz cylinder 2 containing biological tissue sample 1 and physiological saline 3 is placed on a heating stage 5, and the temperature of the heating stage 5 is set to 35°C. To prevent electromagnetic interference generated by the switching of the relay inside the heating stage 5, which could affect the test results (i.e., the operating temperature of the plasma cutting ring), a multilayer high thermal conductivity silicone grease plate 6 is placed between the quartz cylinder 2 and the heating stage 5. This ensures efficient heat transfer while preventing electromagnetic interference from the heating stage 5 from affecting the test results. The entire device is then placed inside a transparent heat shield 7.

[0031] To achieve temperature testing under high-voltage discharge scenarios, the mobile thermocouple device 12 of this invention employs... Figure 3Temperature measurement is performed using the "ceramic outer tube-thermocouple-ceramic inner tube structure" shown, where one end of the ceramic outer tube is closed. The ceramic inner tube is fitted over the thermocouple to ensure the thermocouple leads have sufficient rigidity. After applying a suitable amount of thermally conductive adhesive to the thermocouple end, it is placed inside the ceramic protective shell, and the thermocouple is tightly bonded to the closed end of the ceramic outer tube. By fixing the thermocouple, ceramic outer tube, and ceramic inner tube together, real-time temperature monitoring is achieved during the cutting movement of the plasma cutting ring 4. The ceramic outer tube is made of alumina, which has excellent heat transfer and insulation properties. Figure 3 The left image shows the ceramic outer tube. Figure 3 The image in the middle is a thermocouple. Figure 3 The right figure shows the movable thermocouple device 12.

[0032] This invention designs a clamp 8 that can be adapted to plasma electrosurgical rings 4 of various sizes. The front view and top view of the clamp 8 are shown below. Figure 4 As shown, where, Figure 4 The image above is a front view of fixture 8. Figure 4 The image below is a top view of the clamp 8. The cavity 8.2 of the clamp 8 is 3mm wide, and the clamp 8 is equipped with two fastening screws 8.1, which can fix plasma cutting rings 4 of various common thicknesses. The holder 8.3 located on the other side of the clamp is used to fix the movable thermocouple device 12.

[0033] The plasma electrocautery ring 4 and the movable thermocouple device 12 are fixed on the clamp, such as... Figure 5 As shown, where, Figure 5 The upper image is a front view of the assembled fixture 8, plasma cutting ring 4, and movable thermocouple device 12. Figure 5 The lower figure is a top view of the assembled fixture 8, plasma cutting ring 4, and movable thermocouple device 12. After assembly, the fixture 8, plasma cutting ring 4, and movable thermocouple device 12 are connected and fixed to the slide rail bracket 10 via a rotary displacement stage 9, ensuring that the plasma cutting ring 4 moves horizontally during cutting. The rotary displacement stage 9 allows adjustment of the cutting angle of the plasma cutting ring 4. By adjusting the height of the plasma cutting ring 4, the end of the plasma cutting ring 4 is aligned with the biological tissue sample 1, facilitating subsequent cutting.

[0034] Considering the thickness of the ceramic outer tube, which causes heat transfer delay, this invention proposes a temperature compensation method to eliminate the influence of the ceramic outer tube on the test results. The ceramic outer tube-thermocouple temperature measurement system is simplified to a first-order heat transfer system, therefore, this system satisfies: (1) in, This refers to the operating temperature of the plasma electrosurgical ring. It is a time constant; The temperature value measured by the thermocouple device; For time.

[0035] use Figure 6 Method for time constant Calibration tests were conducted, involving temperature measurements using both the movable thermocouple device 12 and a thermocouple of the same model as those in the movable thermocouple device 12, while the brine was gradually heated using a heating platform. The thermocouple in the movable thermocouple device 12 was used to test the temperature of the sealed end of the ceramic outer tube, and the test result was recorded as the temperature test value; the other thermocouple was used to test the temperature of the brine, and its test result was recorded as the temperature reference value. Multiple sets of temperature test values, corresponding temperature reference values, and temperature change rates were obtained. Substitute each set of data into the formula In this process, the time constant is obtained through data fitting. .

[0036] In a specific embodiment of the present invention, a method for testing the operating temperature of the energy generator of the system is also provided, comprising the following steps: Biological tissue sample 1 is placed in quartz square cylinder 2 containing physiological saline 3, and quartz square cylinder 2 is placed on heating stage 5 through multiple layers of high thermal conductivity silicone grease 6. The physiological saline 3 and biological tissue sample 1 are continuously heated by heating stage 5 and high thermal conductivity silicone grease 6 to simulate the actual working environment of plasma electrosurgical resection ring 4.

[0037] The movable thermocouple device 12 is rigidly fixed to the plasma cutting ring 4 via the clamp 8, and the closed end of the movable thermocouple device 12 is thermally connected to the surface of the plasma cutting ring 4 through a thermally conductive interface. After assembly, the clamp 8, the plasma cutting ring 4, and the movable thermocouple device 12 are connected and fixed to the slide rail bracket 10 via the rotary displacement stage 9. The fixed thermocouple device 13 is placed inside or on the surface of the biological tissue sample 1 and located on the preset movement path of the plasma cutting ring 4.

[0038] The power module 11 transmits radio frequency power to the plasma electrosurgical ring 4. Driven by the radio frequency power, the plasma electrosurgical ring 4 performs electrosurgical cutting or electrocoagulation on the biological tissue sample 1 placed in physiological saline 3. During the electrosurgical cutting or electrocoagulation operation, the plasma electrosurgical ring 4 is driven to move along a set path by the slide rail bracket 10; the movable thermocouple device 12 moves synchronously with the plasma electrosurgical ring 4 and senses the temperature change of the plasma electrosurgical ring 4 in real time, outputting the corresponding temperature difference voltage signal to the temperature acquisition card 14; the fixed thermocouple device 13 also monitors the temperature change at a fixed position of the biological tissue sample 1 in real time and outputs the corresponding temperature difference voltage signal to the temperature acquisition card 14.

[0039] Temperature acquisition card 14 synchronously receives temperature difference voltage signals from mobile thermocouple device 12 and fixed thermocouple device 13; temperature acquisition card 14 performs cold junction compensation, signal amplification, filtering and analog-to-digital conversion on each temperature difference voltage signal to obtain the corresponding digital signal, and according to the calibration table corresponding to the thermocouples in mobile thermocouple device 12 and fixed thermocouple device 13, obtains the temperature measurement value of mobile thermocouple device 12 and the temperature measurement value of fixed thermocouple device 13 respectively and uploads them to host computer 15.

[0040] The host computer 15 obtains the working temperature of the plasma cutting ring based on the temperature measurement value of the mobile thermocouple device 12 using formula (1), thereby realizing the working temperature test of the energy generator. Similarly, the host computer 15 can also obtain the working temperature at each fixed thermocouple device 13 position of the biological tissue sample 1 using formula (1) based on the temperature measurement value of the fixed thermocouple device 13.

[0041] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. Those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A system for testing the operating temperature of an energy generator, characterized in that, The device includes an energy generator, a temperature measuring device, a heating stage, and a thermocouple device to be tested. The energy generator includes a plasma electrosurgical ring and a power module. The power module is used to send radio frequency power to the plasma electrosurgical ring. Driven by the radio frequency power, the plasma electrosurgical ring performs electrosurgical cutting or electrocoagulation on biological tissue samples placed in physiological saline. The thermocouple device includes a coaxially arranged thermocouple, a ceramic inner tube, and a ceramic outer tube closed at one end. The thermocouple is fitted inside the ceramic inner tube, and the ceramic inner tube is fitted inside the ceramic outer tube. The ceramic inner tube provides support for the thermocouple leads to give the leads rigidity. The thermocouple leads are bonded to the closed end of the ceramic outer tube to ensure that heat can be transferred from the ceramic outer tube to the thermocouple. The heating stage is used to heat physiological saline and biological tissue samples therein to simulate the actual working environment of the plasma electrosurgical loop. The thermocouple device is rigidly fixed to the plasma cutting ring by a clamp, and the closed end of the thermocouple device forms a thermal connection with the surface of the plasma cutting ring. The thermocouple device is used to sense the real-time temperature change of the plasma cutting ring, generate a temperature difference voltage signal and transmit it to the temperature measuring device. The temperature measuring device obtains the working temperature of the plasma cutting ring in real time based on the temperature difference voltage signal.

2. The operating temperature testing system for the energy generator according to claim 1, characterized in that, The temperature measuring device obtains the operating temperature of the plasma electrosurgical ring in real time based on the voltage signal, including: The temperature measuring device converts the temperature difference voltage signal into a digital signal, obtains the temperature value measured by the thermocouple device based on the digital signal and the calibration table corresponding to the thermocouple, and then obtains the working temperature of the plasma electro-cutting ring in real time based on the temperature value measured by the thermocouple device. The formula for calculating the operating temperature of the plasma electrosurgical ring is as follows: ； in, This refers to the operating temperature of the plasma electrosurgical ring. It is a time constant; The temperature value measured by the thermocouple device; For time.

3. The operating temperature testing system for the energy generator according to claim 2, characterized in that, Obtain the time constant The methods include: A thermocouple of the same model as the thermocouple in the thermocouple assembly, along with the thermocouple assembly itself, was placed in heated physiological saline. Temperature values ​​measured by the thermocouple and the thermocouple assembly were obtained separately using a temperature acquisition card. The temperature value measured by the thermocouple was used as the... The temperature value measured by the thermocouple device is used as... ; Obtain multiple sets of temperature values and the corresponding temperature value and the rate of temperature change Substitute each set of data into the formula In this process, the time constant is obtained through data fitting. .

4. The operating temperature testing system for the energy generator according to claim 1, characterized in that, The temperature measuring device includes a temperature acquisition card and a host computer. The temperature acquisition card is used to convert the temperature difference voltage signal into a digital signal, obtain the temperature value measured by the thermocouple device based on the digital signal and the calibration table corresponding to the thermocouple, and upload the temperature value measured by the thermocouple device to the host computer in real time. The host computer is used to obtain the working temperature of the plasma cutting ring in real time based on the temperature value measured by the thermocouple device.

5. The operating temperature testing system for the energy generator according to claim 1, characterized in that, The system also includes a quartz square cylinder; the quartz square cylinder is used to hold biological tissue samples and physiological saline; the heating stage is used to heat the biological tissue samples and physiological saline in the quartz square cylinder; wherein, a multi-layer high thermal conductivity silicone grease plate is provided between the quartz square cylinder and the heating stage to avoid the electromagnetic interference of the heating stage affecting the working temperature of the plasma electrosurgical ring obtained in the test.

6. The operating temperature testing system for the energy generator according to claim 1, characterized in that, The system also includes a heat shield; the heat shield is used to ensure the thermal stability of the system.

7. The operating temperature testing system for the energy generator according to claim 1, characterized in that, The system also includes a rotary displacement stage and a slide rail support; the rigidly fixed thermocouple device and plasma cutting ring are fixed on the slide rail support by the rotary displacement stage. The slide rail support is used to ensure that the plasma cutting ring moves in the horizontal direction during the cutting process, and the rotary displacement stage is used to adjust the cutting angle of the plasma cutting ring.

8. A method for testing the operating temperature of an energy generator using the system described in any one of claims 1-7, characterized in that, Includes the following steps: Biological tissue samples are placed in physiological saline, and the physiological saline and biological tissue samples are heated using a heating stage to simulate the actual working environment of the plasma electrosurgical resection ring; then the thermocouple device is rigidly fixed to the plasma electrosurgical resection ring by a clamp; wherein, the closed end of the thermocouple device forms a thermal connection with the surface of the plasma electrosurgical resection ring. The power module sends radio frequency (RF) power to the plasma electrosurgical ring. Driven by the RF power, the plasma electrosurgical ring performs electrosurgical cutting or electrocoagulation on biological tissue samples placed in physiological saline. Simultaneously, the thermocouple device senses the real-time temperature change of the plasma electrosurgical ring, generates a temperature difference voltage signal, and transmits it to the temperature measuring device. The temperature measuring device converts the temperature difference voltage signal into a digital signal. Based on the digital signal and the calibration table corresponding to the thermocouple in the thermocouple device, the temperature value measured by the thermocouple device is obtained. Then, based on the temperature value measured by the thermocouple device, the operating temperature of the plasma electrosurgical ring is obtained in real time, realizing the testing of the operating temperature of the energy generator.

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