111 results about "Ablation radiofrequency" patented technology

The invention discloses a radio frequency ablation electrode control method which comprises the following steps: S1, initializing an ablation temperature target value, a safety limit value and a power adjusting range, and loading a pre-stored anal fistula ablation three-stage feature library and impedance-temperature correlation degree thresholds of all stages; s2, collecting the electrode temperature, the electrode-tissue impedance and the ablation duration in real time, and judging the current ablation stage according to the matching relationship between the ablation duration and the three-stage feature library; s3, formulating a state judgment rule according to the current stage; s4, a fuzzy PID algorithm is adopted to calculate a power basic adjusting amount, a power dynamic compensation amount is calculated, and final output power is determined; and S5, repeating the steps S2-S4 to realize closed-loop control, triggering first-level early warning when the parameters are close to the boundary, triggering second-level alarm when the parameters exceed the safety limit value, and recording abnormal data. The stage adaptability is high, the problem of temperature adjustment lag can be solved, the adjustment precision is accurate enough, and the ablation effect can be improved.

The invention discloses a radiofrequency ablation navigation device based on multi-modal image fusion. The device comprises a respiration sensor, an image reconstruction server, an interaction terminal and a processor. The respiration sensor is worn on a target object and used for collecting respiration data of the target object. The image reconstruction server is used for receiving the multi-modal image of the target object and reconstructing the multi-modal image into a three-dimensional model; the three-dimensional model comprises an organ geometric model, nerve distribution and a blood vessel network. And the interaction terminal is connected with the image reconstruction server and is used for marking a starting point and an ending point for the three-dimensional model. The processor is connected with the respiration sensor, the image reconstruction server and the interaction terminal; and the processor generates a predicted path output according to the respiration data and the three-dimensional model marking the starting point and the ending point. The method has the advantages that respiratory movement errors are accurately compensated, the nerve mistaken injury risk is reduced, and the operation safety is improved.

The invention provides a radiofrequency ablation system based on multi-source data, and relates to the technical field of medical instruments, and the system comprises an ablation area judgment device which is used for judging whether an operation target meets the ablation requirement or not according to a real-time ultrasonic image of the operation target; the data processing device is used for determining an ablation strategy of an ablation area of the operation target according to the real-time electrocardiogram data and the real-time vital sign data of the operation target in combination with a preset radiofrequency ablation working mode when the operation target meets the ablation requirement; the radio frequency energy generating device is used for generating corresponding radio frequency energy according to the ablation strategy; and the ablation device is used for performing ablation operation according to the radio frequency energy action. By integrating multi-source data such as real-time ultrasonic images, electrocardiogram monitoring and vital sign monitoring, accurate judgment of ablation requirements, dynamic adjustment of ablation strategies and accurate output of ablation energy are achieved, and the safety, accuracy and curative effect of cardiac radiofrequency ablation treatment are improved.

The invention relates to a sub-needle expansion structure of a radio frequency ablation needle and the radio frequency ablation needle, and relates to the technical field of ablation. The sub-needle expansion structure of the radiofrequency ablation needle comprises the sub-needle driving mechanism and the sub-needle anti-bending mechanism, and the sub-needle anti-bending mechanism can be adjusted in position along with the movement of the sub-needle bundles, so that the sub-needle anti-bending mechanism can be always positioned in the middle of the segmented sub-needle bundles; therefore, supporting and restraining are provided for the segmented sub-needle bundles in the middle positions of the segmented sub-needle bundles, and the phenomenon that the sub-needle bundles are bent is avoided.

The invention discloses an efficient freezing radiofrequency ablation catheter and ablation system, and belongs to the technical field of freezing ablation, the efficient freezing radiofrequency ablation catheter comprises a needle head part, a catheter part, a handle part, a water injection connector part, a catheter extension tube part and a plug assembly; the needle head part is of a metal head structure, and the near end of the needle head part is connected with the inner and outer multilayer structures of the catheter part; the catheter part is of a multi-layer flexible tube structure and is used for connecting the handle part and the needle head part; the handle part is held by a user, the near end of the handle part is connected with the catheter extension tube part and the water injection joint part, and the far end of the handle part is connected with the catheter part; the water injection joint part is used as a water quantity control water inlet; the catheter extension tube part expands the use range; the plug assembly realizes plugging and fixation of a product. The flexible ablation catheter can be widely applied to natural orifice ablation operations and has the advantages of integration of cold and hot ablation design, diversity of ablation application range, high ablation efficiency and the like.

The invention relates to the technical field of medical image processing and three-dimensional reconstruction, and particularly discloses a reconstruction and analogue simulation method based on a cardiac image. The method comprises the following steps: firstly, preprocessing an input CT or MRI medical image, and automatically segmenting a heart multi-tissue structure by using an nnUNetv2 model, including a plurality of anatomical regions such as atrium, ventricle, myocardial tissue and blood pool; and then performing topology repair, smoothing processing and label resampling on the segmentation result to obtain a three-dimensional label body with a continuous structure and a complete boundary. And based on the optimized tag body, constructing a heart three-dimensional surface model by adopting a Marching Cubes algorithm, and generating a multi-material volume grid suitable for finite element analysis. According to an electrode position and a radio frequency parameter set by a user, a radio frequency ablation simulation model based on a Pennes biological heat conduction equation and an Arrhenius model is established, a temperature field and a tissue thermal damage range are calculated, and a simulation result is displayed in a three-dimensional mode in an overlapping mode. According to the method, the integrated process from medical image automatic segmentation to heart three-dimensional reconstruction and thermal simulation is realized, the segmentation precision, the modeling efficiency and the simulation reliability are improved, and the method can be applied to application scenes such as surgical planning, preoperative evaluation and medical teaching.

The invention provides a radiofrequency ablation instrument for treating heart diseases, and relates to the technical field of medical equipment. The radiofrequency ablatometer comprises a man-machine interaction device, a data processing device, a radiofrequency energy generating device, an ablation device, an ablation parameter acquisition device, a twelve-lead ECG signal acquisition device, an ultrasonic image acquisition device, a vital sign monitoring acquisition device and a circulating cooling device which are respectively connected with the radiofrequency energy generating device and the ablation device, the cooling device is used for supplying cooling liquid to the ablation device; the data processing device controls power output of the radio frequency energy generating device according to the twelve-lead ECG signals and ablation parameters, and the man-machine interaction device displays ultrasonic images, vital sign parameters and ECG data. According to the invention, concentrated display and linkage analysis of ultrasonic images, twelve-lead ECG signals and vital sign parameters are realized for the first time, and the device can be widely applied to percutaneous intracardiac radiofrequency ablation treatment of hypertrophic cardiomyopathy, cardiac tumor and other diseases, and has extremely high clinical application value.

1. The name of the design product: radio frequency ablation instrument. 2. The use of the design product: for the treatment of solid tumors, cardiovascular diseases. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model provides a radiofrequency ablation instrument which comprises an electrode base body, a first electrode, a second electrode, a third electrode and a fourth electrode. The handle is connected with the electrode base body, and the handle can rotate; the bending control assembly is arranged on the handle and is connected with the deformation part; when the handle rotates, the bending control assembly can be driven to rotate, and the bending control assembly drives the deformation part to bend. According to the radiofrequency ablation instrument, the bending amplitude of the deformation part can be controlled by rotating the handle, so that the position of the deformation part can be adjusted according to different patients, the matching degree of different patients is improved, the treatment effect is improved, and the operation risk is reduced.

The utility model discloses a radiofrequency ablation electrode for infant laryngeal airway microsurgery, and belongs to the technical field of radiofrequency ablation electrodes, the radiofrequency ablation electrode for infant laryngeal airway microsurgery comprises a handle shell, a telescopic mechanism is arranged in the handle shell, the interior of the telescopic mechanism is fixedly connected with a sleeve, and the sleeve is fixedly connected with the handle shell. An electrode stem and a smoke tube are arranged in the sleeve, the other end of the smoke tube is connected with a hose, and the other end of the electrode stem is fixedly connected with an electrode needle. The telescopic mechanism is designed to control the electrode rod to stretch out and draw back, the electrode needle head is designed to be bent, a doctor can conveniently observe and position a target spot during an operation, the smoke tube is designed to solve the problem of mist generated during tissue electric resection during the operation, the mist generated during the operation is sucked away through the smoke tube by being connected with a negative pressure tube of a hospital, and the operation is convenient. The interference of smoke on the sight of a doctor is avoided, the use is very convenient, and medical personnel can be helped to perform an operation better.

The utility model relates to an electrode structure and radio frequency ablation cutter head. The electrode structure, including the insulating seat, electrode piece, with the insulating seat top surface is opposite, along the axial through opening has the suction hole and the limiting slot, the limiting slot is along the radial outward opening and forms the sharp angle between the limiting slot inner wall and the electrode piece outer peripheral surface, and electrode wire, two ends along the axial through the limiting slot to with the insulating seat fixed, to hold the electrode piece and limit between self and the insulating seat, because the electrode piece is held and limited through the electrode wire and the insulating seat, will not cause the loosing due to the pin corrosion, effectively improved the stability of the motor structure of the application, in addition, on one hand, the sharp angle structure can make the charge concentrate in the limiting slot edge, to realize directional ablation, ensure that the scrap is directional ablation as small particle, avoid the blockage, on the other hand, the limiting slot has the limiting effect to the electrode wire and directional ablation effect, improved the ablation efficiency of electrode structure whole.

The application discloses a guide wire ablation electrode, a first ablation device, a second ablation device and an ablation method, and relates to the field of medical instruments.The guide wire ablation electrode comprises a guide wire inner core, a working end, a connector and an insulating layer, and has the functions of guiding, developing and ablation.The first ablation device comprises the guide wire ablation electrode, a first endoscope, an imaging device, a radio frequency ablation instrument and an ablation electrode, a center of an obstruction part is ablated to form a channel by the working end of the guide wire ablation electrode, the working head end of the ablation electrode is guided into the channel, a larger range of ablation is carried out on the obstruction part, and the treatment of patients with serious obstruction is realized.The second ablation device comprises the guide wire ablation electrode, a second endoscope and the radio frequency ablation instrument, the second endoscope can continuously visually observe the ablation effect during the ablation process, the working end of the guide wire ablation electrode can visually and accurately carry out multi-point repeated ablation on the obstruction part, the damage to non-treatment parts is small, and the safety is high.

The invention belongs to the technical field of biomedical information analysis, and particularly relates to duodenum mucosa surface replacement and electrotransfection integrated equipment and a parameter feedback-based operation method. The invention firstly provides a duodenum mucosa surface replacement and electrotransfection integrated device. The device comprises an endoscope guide module, a radio frequency ablation module, an electrotransfection module and an intelligent terminal control module. The invention further provides a method for operating the DMR-EP integrated equipment based on organization parameter feedback. According to the method, individualized strategy generation and data-driven treatment path selection in DMR postoperative local gene therapy are proposed for the first time, and the safety, effectiveness and indication range of treatment are remarkably improved.

Systems and methods for cardiac radiofrequency ablation treatment planning are disclosed. In some examples, a computing device receives image volume and dose matrix data. The computing device generates a first mesh of an organ substructure for an organ based on a substructure contour of the organ. Further, the computing device generates a second mesh of an isodose volume based on the dose matrix data. The computing device displays the first mesh of the organ substructure and the second mesh of the isodose volume within the same scene. In some examples, the computing device samples a plurality of dose values, determines a representative dose value for each of a plurality of points along a surface of the dose matrix, and generates an image for display based on the representative dose value. In some examples, a segmentation model is generated for display based on the representative dose value.

The application provides a multipurpose electrode for positioning, guiding and puncturing, comprising a mapping electrode head, a bending sheath, a magnetic positioning sensor, a mapping tube electrode, a mapping tube, a handle and a guide wire; wherein the mapping tube is a multi-cavity tube, comprising a signal line cavity, a magnetic sensor cable cavity and a bending sheath cavity for the bending sheath; the guide wire is arranged in the bending sheath, the mapping electrode head is arranged at one end of the mapping tube, the handle is connected to the other end of the mapping tube, two mapping tube electrodes are arranged on the mapping tube, and the magnetic positioning sensor is arranged between the two mapping tube electrodes; the application integrates many functions such as electromagnetic positioning, endocardial potential mapping, electrical excitation sequence mapping, excitation time slot mapping, accurate positioning of the catheter head end region, point radio frequency ablation and guide wire delivery. One catheter can be used in many different surgical procedures and scenes.

A catheter is disclosed comprising a catheter shaft including a proximal end and a distal end. A flexible framework can be connected to the distal end of the catheter shaft, wherein the flexible framework includes a plurality of heating electrodes and a temperature sensor. The plurality of heating electrodes can be configured to be heated to a first temperature, the first temperature being lower than which radio frequency ablation is performed. The plurality of heating electrodes can be configured to be heated to a second temperature, the second temperature being a temperature at which radio frequency ablation is performed.

The utility model provides a radiofrequency ablation catheter and a radiofrequency ablation system. The radiofrequency ablation catheter comprises a balloon, an inner tube, a guide wire tube, an outer sleeve and a radiofrequency electrode, the near end of the balloon is provided with a near-side tube section extending along the longitudinal axis of the balloon; the inner tube is provided with an inflation cavity and a guide wire tube penetrating cavity which are not communicated with each other, the far end of the inner tube is inserted into the near-side tube section, the inner tube is in sealed connection with the near-side tube section, and the far end of the inflation cavity is communicated with an inner cavity of the balloon; the far section part of the guide wire tube extends out of the far end of the guide wire tube penetrating cavity and extends to an inner cavity of the balloon, and the guide wire tube is in sealed connection with the guide wire tube penetrating cavity; the outer sleeve is arranged outside the inner tube in a sleeving mode, the far end of the outer sleeve is connected with the near-side tube section, a gap is formed in the joint, and a threading cavity between the outer sleeve and the inner tube is used for containing a cable; the radio frequency electrode is provided with a far-side ablation area and a near-side wiring area connected with the cable, extends to the gap from the near-side wiring area to the far-side ablation area along the threading cavity, penetrates out of the gap and then is attached to the surface of the near-side pipe section to extend to the outer surface of the balloon.

The invention provides a radiofrequency ablation fixing device based on information data, which comprises a radiofrequency needle arranged in a radiofrequency assembly, a hollow round frame arranged on the radiofrequency needle, a fixing assembly arranged on the hollow round frame, and the fixing assembly comprises three first telescopic rods and a second telescopic rod, fixing rods are rotationally installed on the two sides of one end of each first telescopic rod and the two sides of one end of each second telescopic rod, a tough elastic rope is rotationally connected to the middle of each first telescopic rod and the middle of each second telescopic rod in each set, and compression straight groove blocks are arranged on the first telescopic rods and the second telescopic rods in each set. The device has the advantages that the patient is prevented from moving disorderly, the position of the radio frequency needle is prevented from being changed when the patient moves disorderly, and therefore the radio frequency needle does not need to be inserted repeatedly.

The invention relates to the technical field of orthopedic surgical instruments, and discloses an abrasive drill device with a radio frequency function, which comprises a grinding mechanism, a handle convenient to operate, a rotating motor arranged at one end of the handle, a connecting block arranged at the output end of the rotating motor, a loop electrode arranged on the surface of the connecting block, and an insulating layer arranged on the surface of the loop electrode, the working electrode is arranged on the surface of the insulating layer; the radiofrequency ablation mechanism comprises a connecting pipe body fixedly mounted at the output end of the rotating motor, a conductive slip ring fixedly mounted between the handle and the rotating motor, a power line electrically connected with the insulating layer, and a return line electrically connected with the loop electrode. The traditional bone grinding-hemostasis operation which needs to be carried out step by step is fused into one surgical instrument, so that the operation of frequently replacing a grinding drill and a radio-frequency electric knife in an operation is avoided, and the continuity and the efficiency of the operation are greatly improved; when a vertebral plate, a zygopophysis and other bony structures are treated, the device can conduct bone grinding while conducting radiofrequency ablation hemostasis in real time.

The application provides an ablation device and a radio frequency ablation equipment, the ablation device comprises a first electrode assembly with a first electrode tip, the first electrode tip comprises a first protective sheath and a plurality of first electrodes arranged on the first protective sheath; and the first protective sheath is in a strip shape, and the plurality of first electrodes are arranged at intervals along the extension direction of the first protective sheath; that is, the plurality of first electrodes simultaneously act on the corresponding tissues to form an integral ablation line, so that a good ablation effect is realized, and the ablation efficiency is improved; it can be seen that the ablation device can solve the problem of the unsatisfactory ablation effect of the ablation device in the prior art.

The invention discloses a cryogenic radiofrequency ablation needle and system, and belongs to the technical field of cryoablation, the cryogenic radiofrequency ablation needle comprises a needle head part, an adjusting handle part, a delivery pipe part, a quick connector part, a rewarming temperature measurement ablation plug part and a radiofrequency ablation plug part, the needle head part is connected to the adjusting handle part, and the delivery pipe part is connected to the radiofrequency ablation plug part; the adjusting handle part is used for connecting the needle head part and the conveying pipe part, the quick connector part is connected to the conveying pipe part, and the rewarming temperature measurement ablation plug part is connected with the radio frequency ablation plug part. On the basis of a cryoablation probe of a high-pressure nitrogen throttling freezing technology, the rewarming module and the radio frequency ablation module are added, central control switching of the three modules is achieved, the integrated structure design of the freezing module, the rewarming module and the radio frequency module is achieved, the integrated structure can be used in a multi-module combined mode and can also be used independently, and the cost is reduced. The cold ablation function and the thermal ablation function are mutually complemented.

The invention provides a radio frequency ablation electrode for female stress urinary incontinence. The radio frequency ablation electrode comprises a radio frequency ablation electrode needle and an electrode needle guider. The radiofrequency ablation electrode needle comprises a needle rod, a bent section and a sub-needle assembly, wherein the bent section is arranged at the far end of the needle rod and is bent relative to the needle rod, so that the bent section can be inserted into the upper end of the urethra; the sub-needle assembly comprises a plurality of sub-needles which can extend from the tip end of the bent section; the guider upper blade and the guider lower blade of the electrode needle guider can be opened, and a channel is formed between the guider upper blade and the guider lower blade, so that the radiofrequency ablation electrode needle is guided to enter the vagina; a urethral dilator positioning and fixing device is arranged at the near end of the guider upper blade, a vertical through hole is formed in the far end of the guider upper blade, and the bent section can pass through the vertical through hole. The urethra ablation catheter can ablate the female urethra, so that the inner diameter of the urethra in the middle section is reduced, and meanwhile, the middle section of the urethra is lifted towards the pubis direction, so that the purpose of treating female stress urinary incontinence is achieved.

The invention discloses a dual-mode ablation treatment system based on tissue characteristic automatic matching, and the system comprises a power conversion circuit which is used for converting a 220V AC commercial power into a DC power required by the system and meeting the EMC standard; the system control circuit is used for scheduling each module to work, receiving a processing instruction and controlling a machine to respond; the parameter display circuit is used for displaying system parameters and states; the system has the advantages that radiofrequency ablation and microwave ablation technologies are innovatively integrated, tissue impedance signals are collected in real time through the impedance detection circuit, the focus characteristics are automatically judged through the system control circuit, and when impedance is small, the system is automatically switched to a microwave ablation mode; when the impedance is too large, the radio frequency ablation mode is automatically switched to; manual equipment replacement or manual mode switching is not needed, the problem that independent equipment is low in treatment efficiency is solved, and incomplete ablation or normal tissue damage caused by manual judgment deviation is avoided.

The invention discloses a multifunctional radiofrequency ablation system for treating breast lesions, which comprises a radiofrequency host, an ablation electrode, a pumping device and a controller, the radiofrequency host is electrically connected with the controller, both the ablation electrode and the pumping device are electrically connected with the radiofrequency host, and the pumping device is communicated with the ablation electrode; the ablation electrode comprises a needle rod assembly and a handle assembly, a first channel is formed in the needle rod assembly, a second channel communicated with the first channel is formed in the handle assembly, and a quick-release connecting piece communicated with the second channel is arranged outside the handle assembly. The device integrates the five functions of radiofrequency ablation, cyst fluid suction, sampling biopsy, smoke exhaust and flushing, cyst fluid suction, sampling biopsy, flushing operation and inner cyst wall ablation in the normal saline environment are achieved through the ablation electrode, instruments do not need to be replaced repeatedly in the ablation process, smoke generated in the ablation process can be exhausted, and the ablation efficiency is improved. And the operation efficiency and the ablation accuracy are effectively improved.

The utility model discloses a kind of radiofrequency ablation needle assemblies and ablation systems containing multifunctional divining rod type coaxial sheath, which ablation assembly includes multipurpose double-channel divining rod type insulating coaxial sheath and ablation needle, divining rod type insulating coaxial sheath is detachably connected with handle, and position adjusting member on handle realizes self-adaptive adjustment of ablation needle working end length, divining rod type insulating coaxial sheath synchronously realizes ablation, biopsy, pericardial effusion drainage, cardiac conduction bundle position marking, myocardial drug injection, ICD implantation and cardiac ECG monitoring and other surgical auxiliary diagnosis and treatment, to ensure that integrated intramyocardial intervention diagnosis and treatment are safely and effectively completed, the ablation needle assembly containing multipurpose divining rod type sheath in the utility model breaks through the bottleneck of low efficiency, complicated operation and many complications of existing radiofrequency ablation technology, and provides an innovative solution for comprehensive interventional treatment of heart disease and various tumor diseases.

The invention discloses a direction-adjustable bending radiofrequency ablation electrode needle which comprises an ablation needle handle, a coaxial sheath, a steering electrode needle, an electrode wire, an outflow tube, an inflow tube and a negative electrode patch. The steering electrode needle is arranged in an inner cavity of the ablation needle handle and the coaxial sheath, the steering electrode needle made of shape memory alloy and the coaxial sheath are matched in a push-pull mode to synchronously adjust and control the length and the angle of the electrode needle, the needle point of the electrode needle is coated with the conductive nanometer coating, protein, tissue and the like are prevented from being adhered to the needle point, and carbonization is reduced. The direction of the ablation electrode needle and the length of the working end can be adjusted and controlled, a safer, more effective and more stable operation ablation treatment mode is achieved through the conductive ceramic coating on the needle tip part, the electrode needle can be suitable for Liwen operation type treatment of complex hypertrophic cardiomyopathy ventricular septal parting, and the safety, effectiveness and operability of the Liwen operation type operation process can be improved.

The invention discloses a water-cooled needle-shaped radiofrequency ablation electrode which comprises a positive electrode needle body, a needle core, an insulating layer, a negative electrode layer, a negative electrode plate, a handle and a switching button module. The positive electrode needle body is a hollow long needle and is used for puncturing and transmitting radio frequency energy, and a discharge ablation section is arranged at the front end of the positive electrode needle body. The insulating layer and the negative electrode layer are sequentially solidified and attached to the outer side of the needle body to form a bipolar ablation circuit. A switching button module is arranged on the handle and can be switched between the negative electrode layer and the negative electrode plate, so that a bipolar or monopolar ablation circuit is formed. According to the system, two modes can be quickly switched on the same needle body, the supply pressure of cold saline water is adjusted through linkage of the mode detection module, it is ensured that the optimal cooling effect can be obtained in different modes, and the flexibility, accuracy and safety of an operation are improved.

A radio frequency ablation device (300) comprising a balloon blocking catheter. The radio frequency ablation device (300) comprises a double or multi-lumen balloon blocking catheter (310) and a radio frequency ablation catheter (320). a stent (321) is arranged at the far end of the radio frequency ablation catheter (320). Two or more electrodes (322, 325, 326) are arranged on the stent (321), and are connected to a radio frequency generator respectively by means of the corresponding guide wires arranged in the radio frequency ablation catheter (320). When the radio frequency ablation device (300) is used for ablating blood vessel peripheral nerves, inflating a blocking balloon (311) arranged at the far end of the guide catheter (310) to block local blood flow in a blood vessel. The invention has ideal nerve ablation effect.

The present application relates to the field of ophthalmic radio frequency ablation and provides an ophthalmic radio frequency ablation system, a radio frequency ablation instrument, and a control method therefor. The radio frequency ablation system comprises: an ablation electrode comprising a sharp-tipped electrode needle for puncturing ocular tissues; and a radio frequency ablation host comprising a control module, a radio frequency module, an input / output module, an impedance detection module, and an information reading module. The radio frequency module is used for providing radio frequency energy for the ablation electrode connected to the radio frequency ablation host. The impedance detection module is used for detecting impedance information of the ocular tissues during ablation. The information reading module is used for acquiring electrode information of the ablation electrode and / or writing use information of the ablation electrode recorded by the radio frequency ablation host into the ablation electrode. This ophthalmic ablation system can not only carry out precise radio frequency ablation therapy on different ocular tissues and simplify the operation steps and reduce difficulty of users, but also determine whether radio frequency ablation conditions are met or not and thereby to ensure the safety of the radio frequency ablation therapy process.

The invention relates to the technical field of medical equipment, in particular to a bipolar inner-cooling radiofrequency ablation needle capable of accurately detecting and positioning. After an operator introduces the needle body into a focus tissue, cooling liquid flows into the inner tube through the water inlet tube and then flows into a gap between the inner tube and the negative electrode connecting tube for cooling, and meanwhile, the positive electrode radio frequency connecting line and the negative electrode radio frequency connecting line are started to measure an inductive resistance value between the needle tip and the outer needle tube; whether the area where the needle head is located reaches the working range or not is judged for positioning, after positioning is completed, the radio frequency line is used for transmitting energy to the needle point and the working area of the outer needle tube for radio frequency ablation, and during the period, the temperature control probe on the temperature measurement connecting line senses the temperature of the needle point for auxiliary temperature control to prevent overheating. The needle point is positioned by effectively utilizing the change of the resistance value between tissues, and meanwhile, the temperature control and ablation of radio frequency are realized, so that the stability and the practicability are better, and the popularization and the use of equipment are facilitated.