162 results about "Needle electrode" patented technology

The invention discloses a composite plasma synthetic jet exciter for aircraft attitude regulation and control. The composite plasma synthetic jet exciter comprises an exciter body, a discharge cavity, a cathode needle electrode, an anode needle electrode, an insulating dielectric layer, an exposed electrode, a buried electrode and a jet hole. During working, an electric arc is formed between the needle electrodes on the two sides of the discharge cavity, and gas in the discharge cavity is instantly heated and flows to the jet hole; meanwhile, gas discharges on the surface of a plate-shaped electrode at the top of the exciter, generated ions are induced by an electric field to conduct secondary acceleration on gas flow, and high-speed jet flow is sprayed outwards from a jet flow outlet. The structure and characteristics of a traditional plasma synthetic jet exciter are not damaged, the composite plasma synthetic jet exciter is formed, the performance of the traditional exciter is effectively improved, and the generated torque can effectively meet the requirement for attitude regulation and control of an aircraft.

The invention belongs to the technical field of microwave plasmas, and particularly relates to a magnetized atmospheric pressure pulse microwave plasma jet discharger. The discharger is reasonable in design, microwave energy is fed into the discharge chamber through the SMA interface, high electric field intensity is formed at the tip of the hollow needle electrode, and fed working gas is disrupted and discharged; a magnet exciting coil outside the quartz tube generates an axial magnetic field inside the quartz tube through direct current, electrons do spiral cycloid motion in an electromagnetic field, and electron cyclotron resonance can be achieved under the field. Through magnetic field constraint, high-energy electrons are constrained in a core area, a motion path is prolonged, effective collision times are increased, gas dissociation efficiency and ionization degree are improved, and collision loss of the electrons and a wall surface is reduced; the plasma jet performance is improved; the device works in an atmospheric pressure environment, does not need a vacuum system, reduces equipment cost and maintenance difficulty, reduces electrode sputtering and cavity corrosion, and prolongs the service life of core components.

The present invention relates to an RF application apparatus comprising a composite electrode that induces surface thermal stimulation and deep thermal stimulation. The RF application apparatus according to an embodiment of the present invention comprises: a first treatment electrode that applies RF energy through skin tissue of a first layer which is a skin surface; a second treatment electrode that includes a plurality of needle electrodes and applies RF energy through skin tissue of a second layer located deeper than the first layer; and at least one return electrode configured to allow returning of RF energy applied from the first treatment electrode or the second treatment electrode, wherein the second treatment electrode is configured to be drawn out and drawn in through the first treatment electrode, and the first treatment electrode and the second treatment electrode are configured to operate simultaneously or selectively.

The invention provides an induction melting feeding ultrasonic atomization pulverizing system and method, and belongs to the technical field of metal powder material preparation. The induction melting system is used for melting metal raw materials, generated metal melt is sprayed out through a nozzle and drips on an ultrasonic vibration workbench, inert gas is ionized through a tungsten needle electrode tip in the plasma electric arc melting system, the dripped melt which is not atomized in time and cooled is assisted to continue to be heated, and the molten metal is melted. Under the action of ultrasonic atomization vibration, the melt liquid level is broken to generate a molten pool. And under the action of ultrasonic waves, molten liquid in the molten pool is broken to generate small fog drops, and the fog drops are rapidly cooled under the action of surface tension in the inert gas environment to form the metal spherical powder. Continuous operation of ultrasonic atomization powder preparation can be achieved, the conditions of hollow powder and satellite powder are reduced, and the prepared metal spherical powder has the advantages of being high in sphericity degree (larger than or equal to 0.95), high in compactness (larger than or equal to 99%) and narrow in particle size distribution (smaller than or equal to 60 micrometers).

The invention discloses a high-voltage electric pulse cracking coal rock stress shock wave monitoring device which comprises a high-voltage pulse capacitor, a voltage divider, a high-voltage pulse switch, a high-voltage pulse cracking generation chamber, a high-voltage probe, a Rogowski coil and an oscilloscope. A test piece is fixed in the high-pressure pulse cracking generation chamber, a circle of test piece clamping assembly corresponding to the test piece is arranged in the high-pressure pulse cracking generation chamber, needle-shaped electrodes are arranged on the two sides, not provided with the test piece clamping assembly, of the test piece, and a piezoelectric pressure sensor is arranged on the high-pressure pulse cracking generation chamber. The detection signal output ends of all the piezoelectric pressure sensors are connected with the pressure detection signal input end of the stress wave signal collector, and a Faraday cage used for covering the piezoelectric pressure sensors is arranged in the high-pressure pulse fracturing generation chamber. The propagation characteristics of the high-voltage electric pulse stress shock waves in the coal rock mass can be accurately and directly captured in real time, and accurate and reliable data support is provided for deep research on a high-voltage pulse electric crushing mechanism.

The invention relates to the field of immersed cooling liquid of transformers, and discloses a heat dissipation mechanism and an efficient immersed cooling liquid cooling device.The heat dissipation mechanism comprises an ionic wind heat dissipation piece, and the ionic wind heat dissipation piece comprises a flow guide pipe, a net electrode located at the top end of the flow guide pipe and a needle electrode located at the top end of the flow guide pipe; the flow guide pipe is arranged to be in an inverted cone shape. The mounting frame comprises an insulating frame and a connecting piece arranged on the outer side of the insulating frame; the number of the mounting racks is two, and the two mounting racks are respectively used for mounting the flow guide pipe and the needle electrode; according to switching of multiple cooling modes under low, medium and high load operation of the transformer body, the adaptive capacity of the transformer body to load changes is improved, meanwhile, forced air cooling convection can be achieved without starting a draught fan, the heat dissipation effect of immersed cooling liquid is guaranteed, and noise is avoided.

The present invention relates to a bimodal atmospheric pressure plasma activated water generation system and method, and belongs to the technical field of plasma activated water, the system comprises: a reaction container for accommodating a liquid to be activated; the medium assembly comprises an insulated medium pipe, the lower end of the medium pipe extends into and is suspended in the reaction container, an air inlet is formed in the side wall of the medium pipe, and a micropore is formed in the bottom end of the medium pipe; the discharging assembly comprises a high-voltage needle electrode, low-voltage electrodes and a power supply, the high-voltage needle electrode is inserted into the dielectric tube, the low-voltage electrodes comprise a first low-voltage electrode surrounding the periphery of the dielectric tube and a second low-voltage electrode fixedly connected to the bottom of the reaction container, and the high-voltage needle electrode is connected to the power supply through a high-voltage power line; and the second low-voltage electrode extends out of the reaction container and is connected to a power supply through a low-voltage power line. The preparation of plasma activated water with two properties can be realized on the same system through simple voltage regulation, and the application range and the use flexibility of equipment are greatly expanded.

The invention discloses a device for exciting ion sound waves for noise reduction, and belongs to the technical field of vibration reduction and noise reduction. The device comprises a cathode structure, an anode structure, a noise source, a square pipeline and a high-voltage power supply device, the frequency, phase and amplitude characteristics of the ion sound wave are directly modulated through the preset combination of applied voltage, electrode gap and discharge position parameters; the cathode structure and the anode structure are composed of three kinds of electrodes, namely a cathode of a needle electrode structure, an anode of a metal wire structure and a perforated plate-shaped grounding electrode. The high-voltage power supply device is used for applying negative high voltage to the needle electrode and grounding the perforated plate, or applying positive high voltage to the metal wire electrode and grounding the cathode so as to generate corona discharge; and ion sound waves generated by corona discharge and industrial noise emitted by the noise source are subjected to sound wave superposition in the square pipeline so as to realize sound pressure counteracting. Ion sound waves are directly generated through corona discharge and are superposed and counteracted with noise sound waves, and passive noise reduction is achieved.

The utility model discloses a plasma needle electrode with puncture and water outlet functions, which comprises an operating handle, a cable, a puncture needle, an electrode stem and a water inlet pipe, one end of the cable is arranged in the operating handle, the other end of the cable is connected with a power supply, one end of the electrode stem is arranged on the operating handle, and the other end of the electrode stem is connected with the puncture needle. The puncture needle comprises a puncture blade face and a water dripping hole formed in the puncture blade face, the water inlet pipe penetrates through the operation handle and the electrode rod to be connected with the water dripping hole, and normal saline conveyed by the water inlet pipe flows to the tip end of the puncture needle through the water dripping hole. The electrode has the advantages that the puncture needle which is arranged at the end of the electrode stem and provided with the three puncture blade faces is used for puncturing thick tissue in the operation process, direct puncture can be achieved without the help of a puncture tool in the operation, puncture is easier, wound surfaces are smaller due to the design of the three blade faces of the puncture needle, and the normal saline instillation holes formed in the puncture blade faces are used for instillation of normal saline. The normal saline is automatically supplied, a doctor does not need to repeatedly dip the normal saline, and use is convenient and fast.

The present invention is related to an extracardiac temporary pacemaker designed for cardiac pacing, particularly for high-grade atrioventricular block and prolonged sinus pauses. The device integrates a pacemaker unit with battery within a transcutaneous patch, featuring thin, needle-like electrodes that penetrate the intercostal muscles to reach the epicardial surface of the heart. The design allows for rapid, significantly reducing the risk of complications associated with traditional intravascular pacemakers and providing a quick, safe, and more efficient solution for temporary cardiac pacing.

The invention discloses a cooling tower fog drop trapping device and method based on corona discharge, belongs to the field of manufacturing and application of electric trapping devices, and aims to achieve the purposes of efficiently trapping fog drops and recycling water mist of a cooling tower of a thermal power plant in an energy-saving manner, an insulating shell is formed into a cavity with a narrow upper part and a wide lower part, and an opening of the cavity is formed in an upper shell; the trapping net is arranged in the cavity close to the opening; the atomizing device is arranged at the lower part in the cavity to form mist; the needle electrode is arranged in the cavity between the trapping net and the atomization device; and the water storage area is arranged at the bottom of the cavity, so that the fogdrop trapping area of the trapping net is increased, and the trapping efficiency is improved.

The present invention relates to a simulation device for non-destructive and rapid de-icing of a fan blade, which includes a self-controllable charge-discharge circuit, a trigger discharge circuit, and a jet array integration device composed of a plurality of shock wave jet cavities arranged in a dense array. A single shock wave jet cavity in the jet array integration device is clamped by an adaptive screwing clamping device, and a reverse clamping arm device for moving along the fan blade is arranged around the jet array integration device; the shock wave jet cavity is a two-stage surface-connected structure, composed of a primary cavity and a secondary cavity. The primary cavity is composed of a needle electrode, polytetrafluoroethylene, and an intermediate electrode, and the secondary cavity is composed of the intermediate electrode, polytetrafluoroethylene, and a ground electrode. The present invention adopts a de-icing method based on plasma jet to break the ice layer at a specified position. The shock wave jet cavity can repeat and continuously jet de-icing in a short time, and the rapid de-icing based on the heat transfer of the plasma and the action of the shock wave avoids damage to the fan blade.

Providing an electrode array for electroporation, as well as related systems and methods. [Solution] An electrode array for use with an electroporation device includes a support member having an upper surface and a bottom surface, defining a plurality of injection channels extending from the upper surface to the bottom surface. The plurality of needle electrodes are coupled to the support member such that the distal ends of the plurality of needle electrodes extend to a needle depth below the bottom surface. The plurality of needle electrodes are arranged in a matrix pattern having rows and columns of needle electrodes arranged along the support member. The plurality of injection channels are dispersed within the matrix pattern.

The utility model provides an efficient uniform coating device of steel wire drawing powder, relates to the technical field of steel wire powder coating, and comprises a feeding box, needle type electrodes and a discharging pipe, the back surface of the feeding box is fixedly connected with a heat preservation box, the back surface of the heat preservation box is fixedly connected with a powder coating box, the needle type electrodes are fixedly connected in the powder coating box at equal intervals, and the discharging pipe is connected with the needle type electrodes. And a powder feeding pipeline is fixedly connected to the side face of the powder coating box, an air blower is fixedly connected to the interior of the powder coating box and located at the position close to the top of the needle type electrode, and the discharging pipe is fixedly connected to the back face of the powder coating box. The temperature of the steel wire is kept through the heating wire, wire drawing powder is evenly conveyed through the spiral conveying blade and prevented from being blocked in the powder inlet pipeline, airflow is sprayed out through the air blower, the needle type electrode is combined to generate an electrostatic field, the powder adhesive force is enhanced, it is guaranteed that the powder is evenly distributed on the surface of the steel wire, and the high efficiency and uniformity of the coating effect are improved.

The utility model discloses automatic forming production equipment for needle type electrode bars, relates to the technical field of automatic forming of electrode bars, and provides the following scheme aiming at the problems that in the existing semi-automatic production, workers sequentially carry out sorting, assembling and processing, generally, one group is finished and returns to the initial position to carry out the production of the next group, and the continuity is not strong. The device comprises a workbench, an operation box is connected to one side of the upper end of the workbench, a steel needle is clamped and fixed to one side of a first base, a conveying mechanism is connected to one side of the first base and is of a rotating rod rotating conveying structure, a manganese piece vibration disc is connected to one side of the conveying mechanism, and a forming mechanism is arranged at one end of the conveying mechanism; the automatic aluminum shell production line is novel in structure, automation of the whole process from raw material sorting to finished product output is achieved, the production period is effectively shortened, and the production efficiency is improved.

The invention provides a glutaraldehyde-based cross-linked silk fibroin microneedle electrode and a preparation method and application thereof, the microneedle electrode comprises a glutaraldehyde silk fibroin microneedle body and a silver wire electrode; the glutaraldehyde cross-linked silk fibroin microneedle body comprises a substrate and a solid needle body; the solid needle bodies are uniformly distributed on one side of the base; the silver wire electrode comprises a silver wire body and a potassium ion selective membrane; a potassium ion selective membrane is arranged at one end of the silver wire body; the ends, provided with the potassium ion selective membranes, of the silver wire electrodes vertically penetrate through the base to enter the solid needle bodies. The glutaraldehyde cross-linked silk fibroin microneedle body is prepared from a glutaraldehyde solution and a pure silk fibroin solution. The microneedle electrode is good in biocompatibility, causes small trauma during cucumber stem detection, does not affect the subsequent growth of cucumber plants, can puncture the surface tissue of cucumber stems, and has stable and high-accuracy detection performance, and the preparation method is simple and easy to operate.

This invention discloses a method for predicting the dynamic conductivity of biological tissues considering the pulse dispersion effect. The method includes: constructing a two-dimensional dual-needle electrode geometric finite element model, setting boundary conditions and initial treatment parameters; introducing a Debye function into the finite element model to characterize the change of tissue dielectric constant with frequency; performing frequency domain analysis on the applied pulse signal and converting the Debye function from the frequency domain to the time domain, allowing the polarization vector to couple with the electric field to participate in transient solutions, thereby obtaining a voltage and current dataset including the effect of pulse dispersion; constructing a tissue dynamic conductivity prediction model and training the prediction model using the voltage and current dataset; inputting the voltage and current response data of the tissue to be determined into the trained model to obtain the tissue dynamic conductivity prediction result. This invention can improve the consistency between the finite element current calculation results and the actual tissue electrical response, and improve the accuracy of tissue dynamic conductivity prediction. It is applicable to dynamic conductivity prediction in electroporation therapy, providing a reference for electroporation therapy.

The invention discloses an intelligent control circuit of a beauty instrument, which relates to the technical field of beauty instrument control, and comprises a micro-control module for providing square wave signals, performing double-path signal conversion and isolation amplification processing by a driving control module, and providing two paths of driving signals with the same frequency and opposite phases for an electrode driving module, when the driving detection module detects that one signal conversion is abnormal when the driving control module performs double-path signal conversion work, the micro-control module controls the driving control module and the electrode driving module to switch a signal transmission path, so that the beauty micro-needle electrode in the electrode driving module is driven to perform double-path signal conversion, and the beauty micro-needle electrode in the electrode driving module is driven to perform double-path signal conversion. And the driving control module is controlled to carry out single-path signal conversion and provide two paths of driving signals with the same frequency and the same phase for the electrode driving module, so that the work of the beauty microneedle electrode is maintained. According to the intelligent control circuit of the beauty instrument, the beauty treatment work can be maintained and the circuit safety and the working efficiency can be improved under the condition that the abnormal signal conversion path is disconnected.

The subcutaneous needle electrode for nerve monitoring comprises a needle body, an upper shell, a lower shell, a dial wheel, an adjusting rod and a wire, the upper shell and the lower shell form a complete closed shell, the needle body is inserted into the adjusting rod and penetrates through the upper end and the lower end of the adjusting rod, and the dial wheel is arranged on the dial wheel. The lower end of the needle body is further connected with a wire, the adjusting rod is installed on an inner hole of the shifting wheel in a lifting mode through threads, the adjusting rod is arranged in a containing cavity in the closed shell in a lifting mode, the depth of the electrode needle penetrating into the skin can be accurately determined, accurate positioning is achieved, and it is ensured that detection data of the electrode needle is accurate; according to the device, the depth is adjusted through rotation of the adjusting rod and a lead screw matching mode of the shifting wheel, the fine adjustment effect is achieved, the single-time adjusting amplitude is small, the device adapts to precise control over the penetration depth of the electrode needle, the safety of the subcutaneous needle electrode is effectively improved, and operation is easy.

A bipolar or monopolar adjustable energy delivery assembly. The assembly is configured for transluminal (e.g., endoscopic) delivery within a patient. The first energy delivery member defines a first electrode portion made of an electrically conductive material so that energy may be delivered to the first energy delivery member to create an energy field along the first electrode portion for application to a target site within a patient. The first energy delivery member may define a lumen therethrough that allows material to be delivered distally therethrough to a target site and / or allows material to be aspirated therethrough from the target site proximally. Optionally, the second energy delivery member and the second insulating member form a second electrode portion. Optionally, one or both of the electrode portions may be adjustable. In addition or alternatively, the first electrode portion and the second electrode portion are adjustable relative to each other.

The invention provides an ablation device and a prostate tissue ablation system.The ablation tissue comprises a head electrode assembly, a needle electrode assembly and a handle assembly, the head electrode assembly comprises a head end main body and an outer tube which are connected with each other, the head end main body is arranged at the far end of the outer tube, a head electrode is arranged at the far end of the head end main body, and the needle electrode assembly is arranged on the outer tube. A needle electrode channel is arranged in the outer tube, the needle electrode assembly is contained in the needle electrode channel, the needle electrode assembly comprises at least one needle electrode, and the needle electrode assembly extends out of the side face of the ablation device based on operation on the handle assembly. According to the embodiment of the invention, the interventional operation of entering the urethra through a natural orifice and operating under a visual working condition and adopting an irreversible electroporation steep pulse electric field with tissue selectivity can be realized, so that the operation efficiency and the operation safety and effectiveness are greatly improved.

The present invention discloses a refrigeration device and a control method, a control device and a computer-readable storage medium, which relate to the field of fresh-keeping technology, wherein the refrigeration device comprises a fresh-keeping container, a refrigeration device and an electric field generating device, the fresh-keeping container is provided with a fresh-keeping space, the refrigeration device is located in the fresh-keeping space, the electric field generating device comprises a high-voltage power supply module and an electrode assembly, the high-voltage power supply module is used to drive the electric field formed by the electrode assembly in the fresh-keeping space, the electrode assembly comprises a needle electrode and a plate electrode, the plate electrode and the needle electrode are conductively connected, the needle electrode is arranged on the plate electrode, and the refrigeration device is used to condense water vapor and make the water vapor gather around the needle electrode. The refrigeration device can form a local high-humidity environment when it is turned on. By controlling the opening or closing of the refrigeration device, the collection and local release of water vapor are controlled, and a relatively high-humidity environment in a certain area is formed, which is conducive to the discharge of the electric field in this environment to form more water negative ions, thereby improving the sterilization and fresh-keeping functions.

The utility model provides a mould for preparing an electrical tree sample for a resin degradation test, which comprises a mould body, the mould body is provided with a gum dipping groove, a fiber groove and a needle electrode groove, the fiber groove and the needle electrode groove transversely penetrate through the mould body and are communicated with the gum dipping groove, and the top surface of the mould body is divided into a first side surface and a second side surface by the gum dipping groove; the fiber groove penetrates through the first side face and the second side face, the needle electrode groove penetrates through the first side face, the width of the first side face is larger than that of the second side face, the fiber groove is used for containing fibers, the needle electrode groove is used for containing high-voltage needle electrodes, and the included angle between the side wall, facing the first longitudinal end of the mold body, of the impregnation groove and the groove bottom of the impregnation groove is an obtuse angle. A slope structure is formed. The inclined surface structure formed by the mold is convenient for sample demolding; by designing a curing grinding tool, the control on experimental interference factors such as an included angle between a needle electrode direction and a fiber direction is realized, so that the interface performance is unique, and a brand new mold is provided for the electrical tree degradation condition and the research on the insulation failure mechanism of a composite material.

The present application discloses a radio frequency microneedle treatment device comprising a mixed output mode, the mode comprising a monopole output period and a bipolar output period, the radio frequency microneedle treatment device comprising: a needle electrode array comprising a plurality of needle electrodes; the radio frequency energy generating part is used for providing radio frequency energy for the needle electrode array; the radio frequency output control part is used for controlling the needle electrode array to be switched between single-pole output and double-pole output in a mixed output mode; in the single-pole output time period and / or the double-pole output time period, the radio frequency output control part controls and activates part of the needle electrodes of the needle electrode array according to the time sequence, so that the needle electrodes activated at the first moment of the needle electrode array are different from the needle electrodes activated at the second moment of the needle electrode array; wherein the first moment and the second moment are different moments of the single-pole output time period or the double-pole output time period.

The invention relates to the technical field of medical instruments, and provides an electrode assembly and an electrocoagulation hemostasis device thereof, the electrode assembly comprises a support body, an electrode main body movably arranged on the support body, and a plurality of needle-shaped electrode needles arranged on the electrode main body, the electrode main body can generate displacement relative to the central axis of the support body, the plurality of electrode needles have the same length, and the needle-shaped electrode needles are arranged on the support body. The adjacent electrode needles are insulated from each other, and the electrode needles make direct contact with the human tissue, so that current is transmitted to the human tissue through the supporting body, the electrode body and the electrode needles in sequence. According to the invention, bleeding can be more quickly and effectively controlled, a plurality of bleeding spots can be treated simultaneously in one operation, and the device is suitable for a large-area wound surface or a complex operation scene needing quick hemostasis, so that the operation time is shortened, and complications are reduced; the electrode assembly can act on the human tissue through the through hole of the compression type hemostasis component, and the electrode assembly and the compression type hemostasis component are used in cooperation, so that the hemostasis purpose is achieved, and the operation efficiency is improved.

The invention discloses a high-voltage direct-current system energy taking device based on an ionic wind effect, and relates to the field of energy taking. The device comprises a generator, metal blades, closed metal sawteeth, a metal connecting shaft, a gear set, a wire and a load, and the generator is located at a direct-current high-voltage potential; the closed metal sawteeth need to be fixed to the tail ends of the metal blades, the intensity of an electric field near the needle electrode is high, air is ionized, ions with charges opposite to those of the closed metal sawteeth are pushed out by the closed metal sawteeth, and ionic wind is formed to push the metal blades to rotate. The metal blades and the generator are fixedly connected through the metal connecting shaft and the gear set to drive the generator to rotate. The load is connected with two poles of the generator, and the generator rotates to overcome electromagnetic force to do work and output power to the load. According to the invention, the energy of the high-voltage direct-current system can be taken out only by a high potential without a solar photovoltaic panel and a battery.

The present application relates to a kind of self-driving foot massage flexible insole.The insole is divided into four layers from top to bottom.The surface layer adopts fluorosilicone resin, and in the middle of the surface layer, there are pyramid-shaped protrusions corresponding to the acupoints of the sole, and micro-needle electrodes are distributed according to the position of the acupoints of the human foot at the edge of the groove channel.A silver metal film is used as a hollow electrode layer.The electrode layer is connected to a ring oscillator circuit inside the heightening layer through a hollow support layer, and the material of the support layer is silicone rubber.The outside of the heightening pad is a styrene-polybutadiene polymer elastomer, and a ring oscillator is installed inside it.Based on triboelectricity and electrostatic induction, the electrode layer collects electric charges and conducts them to the ring oscillator installed inside the heightening layer.The ring oscillator converts low-frequency mechanical stimulation into high-frequency stimulation.The high-frequency electric stimulation processed by the ring oscillator is connected to individual micro-wire electrodes on the surface layer through wires passing through the porous plastic of the surface layer.The foot is stimulated by the high-frequency electricity of the micro-wire electrodes to achieve a therapeutic effect.

The present invention belongs to the technical field of medical devices and provides a high-frequency electric knife with coagulation and cutting functions. The proximal end of an insulating sheath is mounted on a handle. A first needle electrode and a coagulation electrode are both tubular, and a second needle electrode is solid cylindrical. The first needle electrode, the second needle electrode, and the coagulation electrode are coaxially arranged. The proximal end of the coagulation electrode is inserted into and fixedly connected to the distal end of the insulating sheath, and the distal end of the coagulation electrode extends out of the insulating sheath. The first needle electrode is inserted into the coagulation electrode and fits in the gap between the coagulation electrodes. The second needle electrode is inserted into the first needle electrode and fits in the gap between the first needle electrode. The distal end of a first connector that can be driven to move linearly in a distal-proximal direction is inserted into the insulating sheath and fixedly connected to the first needle electrode. The distal end of a second connector that can be driven to move linearly in a distal-proximal direction is inserted into the insulating sheath and fixedly connected to the second needle electrode. The high-frequency electric knife can switch between different electrodes as needed.

The application discloses an ion wind purification device with a needle-honeycomb porous catalytic material structure, and aims to solve the problems of the existing ion wind purification device in the control of ion wind speed and by-products such as ozone. The device comprises an electrode substrate, a plurality of needle electrodes and a catalytic structure. The plurality of needle electrodes are fixed on the electrode substrate, the needle tips of the plurality of needle electrodes are provided with a first distance from the catalytic structure, and a first power supply is connected between the electrode substrate and the catalytic structure. The catalytic structure has a plurality of first through holes, the plurality of first through holes are arranged in a honeycomb shape, the plurality of needle electrodes are arranged towards the plurality of first through holes and correspond to the plurality of first through holes one by one. The catalytic structure is used for decomposing harmful by-products, and the purification of ion wind is realized. The catalytic structure is arranged in a honeycomb porous structure, the wind speed of ion wind is increased, and the purification efficiency is improved.

The application discloses a concentric circular array electric stimulation system, an array needle electrode and application, and belongs to the technical field of medical equipment; the system comprises an array needle electrode unit, a multi-channel stimulation generator, a stimulation control module and a data processing and display unit; the array needle electrode unit comprises a needle body, a needle handle and a plurality of stimulation electrodes, wherein a central stimulation electrode is located on the central axis of the needle body, seven peripheral stimulation electrodes are uniformly distributed in a concentric circular array along the circumference of the needle body shell, and each electrode is connected to the needle handle through an independent insulated wire; the multi-channel stimulation generator independently generates and outputs adjustable electric stimulation signals for each electrode; the stimulation control module independently controls the stimulation parameters of each electrode; through the multi-electrode array design and the multi-channel independent control, the application overcomes the defects of the limited stimulation range of the traditional single-channel needle electrode and the need for repeated position adjustment, and significantly improves the effect of neuromuscular function reconstruction and rehabilitation treatment.