Low frequency processing device and equipment

Abstract

A low-frequency treatment device comprises: a shaft having a proximal end and a distal end; an electrode assembly located at the distal end of the shaft, the electrode assembly comprising a positive electrode and a negative electrode capable of forming a voltage difference; an isolation device separating the positive electrode and the negative electrode; a detection sensor device located at the distal end of the shaft, the detection sensor device comprising a detection rod, an elastic component, and a sensor component connected in sequence. The low-frequency treatment device provided by the present invention can at least solve the problem of electrical circuits and repeated switching of ablation modes affecting surgical efficiency during arthroscopic surgery, and protect hard bone. The present invention also provides a low-frequency treatment device that can automatically identify and adjust the output power of ablation, and protect hard bone during surgery.

Description

Technical Field

[0001] The present invention relates to plasma radio frequency ablation technology, and in particular to a low-frequency treatment device and equipment. Background Art

[0002] The basic principle of plasma radiofrequency treatment is to use a stable electric field at an ultra-low frequency of 100-120 kHz to excite electrolytes such as NaCl into a low-temperature plasma, forming a thin plasma layer 100 μm thick in front of the electrode. Typically, under a 100 kHz ultra-low-frequency stable electric field, exciting one NaCl molecule generates 8 electron volts of kinetic energy, while severing a peptide bond requires 4 electron volts. This disintegrates target tissue cells molecularly, and decomposes and vaporizes proteins and other tissues into low-molecular-weight gases such as H2, O2, CO2, N2, and methane. At low temperatures, this technique achieves a variety of functions, including tissue cutting, perforation, ablation, shrinkage, and hemostasis. Because the operating temperature is relatively low (approximately 40-70°C), it is referred to as low-temperature plasma radiofrequency ablation.

[0003] Plasma radiofrequency ablation technology has been applied to arthroscopic surgery to treat joint diseases. During plasma radiofrequency ablation, radiofrequency energy is applied to the electrode structure through the radiofrequency host. In the saline environment of the joint cavity, it is ionized into plasma. The high-speed movement of ions rapidly breaks the molecular bonds within the tissue cells, achieving the effect of ablation and decomposition.

[0004] Currently, bipolar plasma RF ablation products are the most widely used in the market. These devices integrate the positive and negative electrodes of the radiofrequency (RF) into the working end, creating an electrical circuit through saline or conductive fluid. Simultaneously, a stable plasma state forms within a certain area of ​​the positive electrode surface. During arthroscopic surgery, when using a plasma RF ablation tip (electrode), two entrances are typically made into the joint cavity: one for the RF ablation device and the other for the arthroscopic device, providing imaging information via the arthroscopic unit.

[0005] Bring the plasma RF ablation tip (electrode) close to the target soft tissue and perform ablation by pressing the handle button or stepping on the foot pedal. A thin layer of plasma will form on the positive electrode surface of the plasma RF tip (electrode). Bringing the plasma close to the target soft tissue, the high-speed particles in the plasma will break the molecular bonds of the target soft tissue, achieving the purpose of ablation. To adjust the output power, use the handle shift button to control the output energy or the control button on the main unit panel. When the foot pedal or handle button is released, the device stops.

[0006] In existing technology, when using a bipolar plasma RF ablation tip / electrode, the physician must control the distance between the tip (electrode) positive electrode and the target tissue based on their experience. If the electrode's positive electrode is too close to soft tissue or encased by soft tissue, saline or conductive fluid will block the flow, preventing the formation of a stable plasma state on the electrode surface, thus affecting work efficiency. If the electrode's positive electrode is too far from the soft tissue, the effective plasma zone will not contact the soft tissue, thus affecting work efficiency. Furthermore, when ablating soft tissue, the RF ablation tip (electrode) is in close contact with the soft tissue, making it difficult to visually monitor the ablation status through arthroscopy. This includes determining whether the target soft tissue has been ablated, whether the target cartilage or hard bone has been reached, or whether no contact has occurred. During arthroscopic surgery, the physician cannot directly monitor the ablation status while performing the ablation procedure. The physician must constantly pause the ablation procedure to confirm the ablation status through arthroscopy before continuing, which significantly impacts surgical procedures and work efficiency.

[0007] Patent document CN101416874B discloses a medical probe comprising: a flexible insertion tube, a rigid distal tip, an elastic component, and a magnetic position sensor contained within the distal tip for sensing the position of the distal tip relative to the distal end of the insertion tube. The position changes in response to deformation of the elastic component to provide a total amount of movement of the distal tip relative to the distal end of the insertion tube, thereby providing a measure of the deformation of the elastic component. The magnetic position sensor is configured to generate a signal indicative of the pressure applied to the distal tip in response to the deformation. This device is primarily used in cardiac radiofrequency ablation procedures to ensure proper contact between the electrode and the endocardium during the ablation procedure.

[0008] Patent document JP2018075394A discloses predicting electrical connections of the atrial wall based on contact forces measured during radiofrequency ablation. The catheter includes an ablation head and a distal portion having a force sensor and serving as an energy source. The flexible catheter is operably connected to an energized parameter measuring device, and the ablation head of the catheter is introduced into the patient's body during a medical procedure to guide the distal portion of the catheter to move against a target tissue and the ablation head to move relative to the first target tissue position, and when the ablation head is energized for the first target tissue position, a series of energized parameters and the force sensor are in contact. The size of the damaged area is automatically determined based on the measurement results of the force sequence, and is used to guide the ablation head to a second or subsequent target tissue position, and control information is automatically generated. The method and device are mainly used in the treatment of atrial fibrillation.

[0009] Patent document CN108720920B discloses an ablation catheter with a function of detecting pressure in contact with tissue. The distal end of the ablation catheter includes an elastic body and a pressure sensor. The elastic body is a hollow tubular structure, which includes section A and section B. The section A is provided with a hollow structure that increases elasticity and whose end extends to section B. The pressure sensor is arranged at the intersection of section A and section B. The hollow structure includes at least one strip groove body that extends in a stepped manner and is arranged in a spiral shape. Since the elasticity of the elastic body of section A is amplified by the hollow structure and the hollow structure is connected to section B, the deformation of the intersection area is relatively small compared to the complete elastic body structure in the prior art. The deformation is an amplified manifestation. At the same time, the entire structure is not hollowed out, which causes excessive elasticity and the problems in the background technology. A better balance can be achieved so that the entire elastic body has appropriate elasticity during use, and can achieve the optimal state of pressure on the tissue during ablation. The pressure against the tissue is large enough, and the deformation of the junction area is large enough. The value reflected by the pressure sensor is larger, and the pressure detection effect is better. At the same time, the measured value will cooperate with the rear-end positioning device to measure the position of the catheter head end and the bending direction and angle. The larger the value reflected by the pressure sensor, the better the precise positioning of the catheter. The invention aims to provide an ablation catheter with more accurate pressure detection, and related structures containing such an ablation catheter. The ablation catheter is mainly used in cardiac surgery. Summary of the Invention

[0010] The inventors have found through research that the plasma state area is related to the output electrical power, and the thickness of the plasma state area is within 1.5 mm above the surface of the positive electrode. This range is the effective area. Beyond this range, the power will decay rapidly, and the ablation or coagulation effect will be sharply reduced. In addition, when doctors perform plasma radiofrequency ablation surgery under arthroscopy, they cannot accurately observe the ablation state of non-free soft tissue in real time, and it is difficult to identify whether the soft tissue ablation and debridement has been completed. It is also difficult to identify whether the cartilage or hard bone under the soft tissue has been contacted. It is necessary to repeatedly switch the "ablation stop" / "ablation run" mode, which affects the efficiency of the operation. In addition, during arthroscopic surgery, the doctor adjusts the ablation and debridement power by pressing the power button on the handle or the power button on the host. When ablating a large area of ​​non-free soft tissue, it is necessary to trigger the button function for a long time, which is inconvenient to operate.

[0011] The present invention aims to provide a low-frequency treatment device that can be used in arthroscopic surgery. It can not only solve the problem of electrical circuits easily generated when the electrode is too close to the tissue surface, but also can identify the contacted tissue (such as soft tissue, cartilage, hard bone, etc.) through a detection sensor device, automatically adjust the output power in the electrical circuit, and solve the problem of repeated switching of electrode output gears in the existing technology, thereby improving surgical efficiency.

[0012] To solve the above technical problems, an embodiment of the present invention provides a low-frequency treatment device, comprising: an axis having a proximal end and a distal end; an electrode assembly located at the distal end of the axis, the electrode assembly comprising a positive electrode and a negative electrode that can form a voltage difference; an isolation device separating the positive electrode and the negative electrode; a detection sensor device located at the distal end of the axis, the detection sensor device comprising a detection rod, an elastic component, and a sensing component connected in sequence; and a handle.

[0013] According to some specific embodiments, the isolation device uses a non-metallic stent.

[0014] According to certain specific embodiments, the sensing component includes a sensor and a sensor communication line, and the sensor is selected from one or more of a pressure sensor, a displacement sensor, and a stress and strain sensor.

[0015] According to some specific embodiments, the detection rod is made of a non-conductive material and is higher than the electrode assembly in a direction perpendicular to the axis.

[0016] According to some embodiments, the elastic component is a sealer containing a liquid substance or a gaseous substance.

[0017] According to some embodiments, the handle includes a control button for controlling the operation or stop of the electrode assembly.

[0018] Compared with the prior art, the technical solution of the embodiment of the present invention has at least the following beneficial effects:

[0019] The present invention employs at least one probe rod and an elastic component (e.g., a sealant filled with a liquid substance) connected to the probe rod, positioned near the electrode assembly. The combined structure of the probe rod and sealant produces a rebound effect, which is used to determine the softness and hardness of the tissue and thus whether the electrode is operational. If the rebound effect is present, the tissue is considered soft, and a current signal is output to control electrode operation. If the rebound effect is absent, the tissue is considered hard, and no current signal is output.

[0020] Secondly, the elastic components and sensing components (such as pressure sensors and displacement sensors) in the detection sensor device identify displacement and pressure, determine the state of the tissue contacted by the probe rod, and then automatically adjust the output power, avoiding frequent confirmation of the ablation status and repeated switching of the electrode output gear during the operation. The pressure sensor can convert the pressure signal into a usable output electrical signal. Based on the electrical signal feedback and the changes in the electrical signal from the pressure sensor, it can be determined whether the contact is cartilage or hard bone, thereby controlling the circuit. When the probe rod contacts hard bone, the pressure signal received by the sensor increases. By determining the pressure value of the sensor, the output power of the electrode assembly is fed back, an alarm is prompted, or the ablation process is stopped.

[0021] Thirdly, the probe rod ensures a safe distance between the electrode assembly and tissue, preventing damage. This resolves the electrical loop problem that can occur during plasma radiofrequency ablation procedures when the electrode assembly is too close to the tissue surface. Furthermore, because the probe rod is higher than the electrode assembly, it prevents the electrode assembly from damaging hard bone during ablation, thus protecting the hard bone while probing tissue.

[0022] Finally, the probe rod ensures sufficient conductive fluid between the electrode assemblies. If there are insufficient charged particles between the electrode assemblies, the output power will be affected. The probe rod also ensures that the target soft tissue is in an effective ionized state, achieving effective ablation.

[0023] The present invention also provides a low-frequency processing device, comprising the low-frequency processing apparatus provided by the present invention.

[0024] According to some specific embodiments, the low-frequency treatment device includes:

[0025] Power supply circuit S0;

[0026] A control module S1, wherein an input terminal of the control module S1 is connected to an output terminal of the power supply circuit S0;

[0027] an ablation module S2 comprising the electrode assembly, wherein the input end of the ablation module S2 is connected to the output end of the control module S1;

[0028] The detection sensing module S3 includes the detection sensing device. The output end of the detection sensing module S3 is connected to the input end of the control module S1. When the detection rod of the detection sensing device contacts the tissue, the displacement change and pressure sensed by the elastic component and the sensing component are used to judge the contacted tissue, and a signal is output to the control module S1. The control module S1 outputs a signal to the ablation module S2 to control the operation or stop of the electrode assembly in the ablation module S2.

[0029] According to some specific embodiments, the control module S1 includes a pedal and / or a control button to control the operation or stop of the electrode assembly.

[0030] According to some specific embodiments, the low-frequency handling device further includes an alarm module S4 connected to the output end of the detection sensor module S3.

[0031] The present invention also provides a low-frequency treatment device and equipment for use in arthroscopic surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described below with reference to the accompanying drawings and specific embodiments. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention, and the various components in the drawings are not drawn to scale.

[0033] Figure 1 This is a schematic diagram of plasma radiofrequency ablation working under arthroscopic surgery in the prior art.

[0034] Figure 2 It is a cross-sectional view of a plasma radiofrequency ablation probe according to a specific embodiment of the present invention.

[0035] Figure 2A 4 is a structural diagram of a plasma radiofrequency ablation probe according to a specific embodiment of the present invention.

[0036] Figure 2-1 4 is a structural diagram of a low-frequency processing device according to a specific embodiment of the present invention.

[0037] Figure 2-2 4 is a structural diagram of a low-frequency processing device according to a specific embodiment of the present invention.

[0038] Figure 3-1 It is a structural schematic diagram of a detection sensor device according to a specific embodiment of the present invention.

[0039] Figure 3-2 It is a structural schematic diagram of a detection sensor device according to a specific embodiment of the present invention.

[0040] Figure 4 4 is a system block diagram of a low frequency processing device according to a specific embodiment of the present invention.

[0041] Description of the main marks in the accompanying drawings:

[0042] Low frequency processing device 10

[0043] Plasma RF ablation probe 10A

[0044] Detection sensor device 100

[0045] Detection rod 101 elastic component 102 sensor 103

[0046] Sensor communication line 104 Metal sheet 105a Metal electrode wire 105b

[0047] Metal head 106a Metal rod wall 106b Isolation device 107

[0048] Sleeve 110 handle 120 control button 121

[0049] Guide wire 130 Suction pipe 140

[0050] Plasma radiofrequency ablation equipment 1'

[0051] Plasma radiofrequency ablation electrode 10'

[0052] Radiofrequency ablation host 11

[0053] Arthroscopic equipment 2

[0054] Arthroscopic lens 21 camera 22 light source 23

[0055] Arthroscopy host 24 display 25 DETAILED DESCRIPTION

[0056] Arthroscopic surgery is a minimally invasive surgery in which a metal tube with a lens and lighting device is inserted into the joint cavity through a very small incision. The internal structure of the joint cavity is magnified on the monitor to observe the lesions and locations in the joint cavity. At the same time, a comprehensive inspection and cleaning of the lesion site is carried out under television monitoring. Figure 1 As shown, in the prior art, when performing arthroscopic surgery, doctors need to use both a plasma radiofrequency ablation device 1' and an arthroscopic device 2. The plasma radiofrequency ablation device 1' includes an radiofrequency ablation main unit 11 and a plasma radiofrequency ablation electrode 10' connected thereto. The arthroscopic device 2 includes an arthroscopic main unit 24 and a light source 23, a camera 22, and an arthroscopic lens 21 connected thereto. The light source 23 can provide light for surgery, while the arthroscopic lens 21 and camera 22 can monitor and record the status of the target tissue. The arthroscopic main unit 24 is also connected to a display 25, which projects the image signal transmitted back by the camera 22 onto the display for convenient observation by the doctor. When the doctor uses the plasma radiofrequency ablation electrode 10' to ablate tissue, because the plasma radiofrequency ablation electrode 10' is too close to the target tissue A, and the arthroscopic lens 21 is placed in the loose body B (movable cartilage or osteochondral fragments in the joint), it is difficult for the doctor to intuitively detect the non-free soft tissue ablation state through the arthroscopic lens 21 and the display 25. During the operation, the doctor needs to repeatedly switch between the "ablation stop" / "ablation run" modes.

[0057] To make the above-mentioned objects, features, and beneficial effects of the present invention more clearly understood, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that those skilled in the art will be able to conceive of various other embodiments and make modifications thereto based on the teachings of this specification without departing from the scope or spirit of the present disclosure. Therefore, the following specific embodiments are illustrative rather than restrictive.

[0058] As a feasible embodiment, the low frequency treatment device of the present invention can be a plasma radiofrequency ablation electrode, as shown in the attached Figure 2-1 and attached Figure 2AAs shown, the low-frequency treatment device 10 includes a plasma RF ablation probe 10A near the head, connected in sequence to a cannula 110, a handle 120, and a guide wire 130 near the tail. Handle 120 is provided with a control button 121 for controlling the operation (i.e., ablation) and inactivity of the electrode assembly in the plasma RF ablation probe 10A, and for switching between an operating mode and a non-operating mode. In non-operating mode, the plasma RF ablation electrodes cannot perform ablation. Although not shown in the figure, the guide wire 130 can be connected to an RF ablation host or other matching low-frequency treatment host to form a plasma RF ablation device or a low-frequency treatment device.

[0059] As a feasible embodiment, the low frequency treatment device 10 further includes a suction pipeline 140, as shown in the attached Figure 2-2 shown.

[0060] As attached Figure 2A and attached Figure 2 As shown, the plasma RF ablation probe 10A includes a spherical metal head 106a and a cylindrical metal rod 106b. Together, these two components form the negative electrode of the electrode assembly. A metal electrode wire 105b extending from the interior of the probe 10A and a metal sheet 105a on the surface of the probe 10A form the positive electrode of the electrode assembly. The positive and negative electrodes of the electrode assembly are separated by an isolation device 107 (e.g., a non-metallic bracket), ensuring that the probe 10A is not short-circuited and that the conductive fluid forms an electrical circuit.

[0061] As a feasible implementation method, Figure 2A As shown, a guide hole can be designed on the surface of the metal sheet 105a, which not only allows the liquid to circulate, but also allows the radio frequency energy to be evenly distributed and diffused between the electrodes, thereby promoting electrode cooling.

[0062] A probe rod 101 is provided near the metal sheet 105a (positive electrode) of the plasma radiofrequency ablation probe 10A. The probe rod 101 penetrates the metal sheet 105a and is higher than the metal electrode wire 105b in a direction perpendicular to the metal sheet 105a. The probe rod 101 is connected to an elastic component 102, and the elastic component 102 is connected to a sensor 103. The probe rod 101, the elastic component 102 and the sensor 103 constitute a detection sensor device 100, as shown in the attached figure. Figure 3-1 and 3-2 shown.

[0063] The probe rod 101 can be made of a high-strength, non-elastic component, such as polyetheretherketone (PEEK) or polyphenylenesulfone resin (PPSU), a hard plastic or high-temperature-resistant non-metallic material. Preferably, the probe rod 101 is cylindrical; preferably, the diameter of the cylinder is 1-8 mm and the height is 2-6 mm. The height of the probe rod 101 is designed based on the height of the effective ion zone generated by the product. When the probe rod 101 is used in conjunction with the plasma RF ablation probe 10A, the effective plasma zone that can be generated is considered to avoid designing the probe rod 101 too high, resulting in inflexible use and interference with joint tissue, or preventing ablation due to the distance between soft tissue and the effective plasma zone. This height design also ensures sufficient clearance between the electrode and the soft tissue being ablated, ensuring sufficient electrolyte within the generated plasma zone and maintaining sufficient ions for continuous soft tissue ablation.

[0064] The elastic component 102 can be a seal containing a liquid or gaseous substance. Preferably, the gaseous substance in the seal can be an inert gas that meets standard atmospheric pressure. Preferably, the height of the compressible space of the seal is 1 to 6 mm. Those skilled in the art will appreciate that, to achieve the same technical effect, the elastic component 102 can also be other functional components for detecting displacement changes.

[0065] Sensor 103 can be a pressure sensor, such as a thin-film, high-sensitivity pressure sensor disclosed in invention patent CN108801536B, for measuring surface pressure. Sensor 103 can also be a stress and strain sensor. Preferably, sensor 103 has a width of 4-5 mm.

[0066] As attached Figure 2 As shown in FIG, sensor 103 is connected to sensor communication line 104. When positive pressure is applied to probe rod 101, the volume within elastic component 102 (e.g., a sealer) compresses, causing pressure changes in sensor 103, which converts the pressure signal into an electrical signal and transmits the electrical signal back through sensor communication line 104. When plasma RF ablation probe 10A is performing normal soft tissue ablation, the rebound rate of probe rod 101 is approximately 0.5 mm / s, the same as the RF ablation rate. When sensor 103 detects a significant decrease in the rebound rate of probe rod 101, i.e., the pressure sensor pressure change rate approaches zero, but a pressure value still exists, it means that the contact area is hard bone or cartilage, which cannot be quickly ablated.

[0067] Attachment Figure 3-1 and 3-2 The structure of the detection sensor device is shown as an example. Those skilled in the art should understand that in order to achieve the same technical effect, the detection sensor device can also have other designs. Figure 3-1 and 3-2The embodiment shows only one detection rod, and the detection rod is perpendicular to the metal sheet. Those skilled in the art should understand that two or more detection rods can be provided, or the detection rod can be provided in a non-perpendicular state to the metal sheet to achieve the same or similar technical effects.

[0068] As attached Figure 4 The system block diagram of the plasma radiofrequency ablation device shown in the figure includes: a power supply circuit S0, which can be connected to the mains for continuous power supply; a control module S1 connected to the output end of the power supply circuit S0; an ablation module S2 connected to the output end of the control module S1, wherein the control module S1 obtains electrical energy through the power supply circuit S0 to control the operation of the electrode assembly in the ablation module S2; and a detection sensor module S3, which includes a detection sensor device, wherein the output end of the detection sensor device is connected to the control module S1 and can output a signal through the sensor communication line in the detection sensor device. During the operation, when the detection rod in the detection sensor device contacts the tissue, the displacement change and pressure sensed by the elastic component and the sensor component are used to determine the contacted tissue, and a signal is output to the control module S1. The control module S1 outputs a signal to the ablation module S2 to control the operation or stop of the electrode assembly in the ablation module S2.

[0069] The control module S1 can realize this function together with the radiofrequency ablation host and the control button on the handle. The control button on the handle not only transmits the electrical signal to the radiofrequency ablation host through the wire at the end of the handle, but also transmits the instructions of the radiofrequency ablation host to the plasma radiofrequency ablation electrode and performs specific operations. The host adjusts the output power in the electrical circuit according to the magnitude of the received current, and calculates the displacement change produced by the detection rod based on the magnitude of the current. According to the displacement change, the state of the contacted tissue can be identified. The plasma radiofrequency ablation equipment can also include an alarm module S4, which is connected to the output end of the detection sensor module S3. When the detection sensor module S3 detects a change in the electrical signal, the electrical signal is transmitted to the radiofrequency ablation host through the sensor communication line and the wire at the end of the handle. The doctor can operate the control button or foot pedal according to the content displayed by the radiofrequency ablation host or the alarm information.

[0070] When the product is in working mode, the non-conductive detection rod of the plasma radiofrequency ablation probe is not subjected to external force, the pressure sensor generates no current, and the plasma radiofrequency ablation device does not work.

[0071] When the plasma radiofrequency ablation probe contacts soft tissue, the detection rod is subjected to external force, compressing the sealer to form a specific pressure, which is transmitted to the sensor, and feedback is a current signal of a specific size, which is transmitted to the radiofrequency ablation host through the sensor communication line. The control module in the radiofrequency ablation host outputs the corresponding power based on the size of the current signal to realize the automatic soft tissue ablation function. At the same time, the greater the pressure, the higher the output power.

[0072] When the soft tissue touched by the plasma radiofrequency ablation probe is ablated, the probe rod gradually rebounds, the pressure in the sealer decreases, the current signal fed back by the pressure sensor decreases, and the power output of the corresponding host decreases.

[0073] When the soft tissue touched by the plasma radiofrequency ablation probe is completely ablated, the probe rod returns to its original state, the sealer is in a pressure-free state, and the host has no output power.

[0074] When the plasma RF ablation probe contacts hard tissue, the probe rod is stressed, stimulating the RF ablation unit to output power. However, since hard tissue cannot be ablated, the probe rod does not rebound upon contact. The RF ablation unit outputs power based on the current signal fed back by the pressure sensor and simultaneously identifies current changes. If there is no significant decrease in current (i.e., no rebound of the probe rod) within a certain period of time, the plasma RF ablation probe is not ablating soft tissue. In this case, the RF ablation unit can be set to trigger a reminder or stop operation to protect non-target tissue.

[0075] In addition, due to the height of the detection rod itself, the distance between the positive electrode and the target tissue can be effectively guaranteed, so that there is sufficient conductive liquid between the positive and negative electrodes of the product to form an electrical circuit and stimulate the ion state on the surface of the positive electrode.

[0076] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A low-frequency processing device, comprising: a shaft having a proximal end and a distal end; an electrode assembly located at a distal end of the shaft, the electrode assembly comprising a positive electrode and a negative electrode capable of forming a voltage difference; A separator, separating the positive electrode and the negative electrode; A detection sensor device is located at the distal end of the shaft, and includes a detection rod, an elastic component, and a sensor component connected in sequence; and a handle; wherein, The structure in which the detection rod is combined with the elastic component can produce a rebound effect, and the hardness of the tissue is judged based on the rebound effect to determine whether the electrode is working. The detection sensor device is configured to sense displacement changes and pressure through the elastic component when the detection rod contacts the tissue, and the sensing component converts the resulting signal into an electrical signal output to control the operation or stop of the electrode assembly and automatically adjust the output power according to the hardness of the tissue.

2. The low frequency processing device according to claim 1, characterized in that The isolation device adopts a non-metallic bracket.

3. The low frequency processing device according to claim 1, characterized in that The sensing component includes a sensor and a sensor communication line, and the sensor is selected from one or more of a pressure sensor, a displacement sensor, and a stress and strain sensor.

4. The low frequency processing device according to claim 1, wherein: The detection rod is made of non-conductive material and is higher than the electrode assembly in a direction perpendicular to the axis.

5. The low frequency processing device according to claim 1, characterized in that: The elastic component is a sealer that contains liquid or gaseous matter.

6. The low frequency processing device according to claim 1, characterized in that The handle includes a control button for controlling the operation or stop of the electrode assembly.

7. A low frequency treatment device comprising the low frequency treatment apparatus according to any one of claims 1 to 6, comprising a control module, an input end of which is connected to an output end of a power supply circuit; an ablation module, comprising the electrode assembly, wherein the input end of the ablation module is connected to the output end of the control module; The detection sensing module includes the detection sensing device, and the output end of the detection sensing module is connected to the input end of the control module. The module is configured to sense the displacement change and pressure through the elastic component and the sensing component when the detection rod contacts the tissue, and output a signal to the control module. The control module controls the operation or stop of the ablation module based on the signal and automatically adjusts the output power.

8. The low frequency processing device according to claim 7, characterized in that: The control module includes a pedal and / or a control button to control the electrode assembly to start or stop.

9. The low frequency processing device according to claim 7, characterized in that: The low-frequency processing device further includes an alarm module connected to the output end of the detection sensor module.

Images