165 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 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.

Disclosed in the present invention is an ablation system. The ablation system comprises: a radio frequency generation module, which is used for generating a radio frequency output; a pulse generation module, which is used for generating a pulse output; an output control module, which is used for choosing, according to a characteristic of an ablation region, between ablation output modes, namely, radio frequency output and pulse output; and an ablation consumable, which is used for performing output for the ablation region according to the ablation output mode, which is selected by the output control module. According to the ablation system of the present invention, radio frequency ablation technology can be combined with pulsed electric field ablation technology, such that different application requirements in a clinical surgical operation are better met.

The utility model discloses a heat shrink tube slitting device which is located on one side of a top plate and provided with a supporting seat on a bottom plate, a vertical driving mechanism is installed on the supporting seat, the movable end of the vertical driving mechanism is connected with the top plate, the top plate is connected with a plurality of connecting seats, and a plurality of annular tool bits are rotatably installed at the bottoms of the connecting seats. The upper surface of the bottom plate is provided with a first mounting base with a first arc-shaped groove formed in the top, second mounting bases with second arc-shaped grooves formed in the top, and a plurality of second mounting bases located on one side of the first mounting base and arranged in the length direction of the bottom plate at intervals. The first arc-shaped groove and the second arc-shaped groove which are used for placing the radiofrequency ablation needle are coaxially arranged, and a first groove which is internally provided with two driving rollers is arranged below the first arc-shaped groove and at the top end of the first mounting seat. Passive cutting of the heat shrink tube is achieved, the situation that the radio frequency ablation needle is damaged due to excessive cutting is avoided, the machining yield can be improved, and unnecessary waste is reduced.

The embodiment of the invention provides a radiofrequency ablation catheter and radiofrequency ablation equipment. The radiofrequency ablation catheter comprises an electrode support capable of contracting and expanding in the radial direction, a connecting tube and a center wire. The near end of the connecting tube is connected with the far end of the electrode support, and the connecting tube is provided with a first cavity channel penetrating through the near end and the far end; the central wire is movably arranged in the electrode bracket and the first cavity in a penetrating manner; a first limiting part is arranged on the center wire, the first limiting part is located in the first cavity channel, and a second limiting part is correspondingly arranged on the inner wall of the first cavity channel; when the first limiting part abuts against the second limiting part and the center wire moves from the far end to the near end, the electrode support is switched from the contraction state to the expansion state. According to the technical scheme, the risk of damaging the blood vessel can be reduced, the precision of selecting the target branch blood vessel by the central wire is improved, and then the ablation efficiency of radiofrequency ablation is improved.

The invention provides a radiofrequency ablation catheter, a flexible electrode of the radiofrequency ablation catheter and a radiofrequency ablation system. The flexible electrode comprises a flexible metal electrode layer, a lining plate layer, a first flexible conductor layer, a substrate layer and a second flexible conductor layer which are sequentially arranged in a stacked mode, the lining plate layer and the substrate layer are made of flexible insulating materials, and a power connection area of the flexible metal electrode layer is used for being connected with the far end of a radio frequency cable of the radio frequency ablation catheter. The far end of the flexible metal electrode layer is provided with a radio frequency conduction area used for conducting radio frequency energy to target tissue, the far end of the substrate layer is provided with an electric connection part, and the far end of the second flexible conductor layer is electrically connected with the far end of the first flexible conductor layer through the electric connection part. The orthographic projection of the joint of the far ends of the first flexible conductor layer and the second flexible conductor layer and the electric connection part on the first surface falls in the radio frequency conduction area, and the near ends of the second flexible conductor layer and the first flexible conductor layer are used for being connected with the far ends of two wires of the radio frequency ablation catheter to form a thermocouple loop.

The plasma radio frequency ablation electrode comprises an electrode sub-needle, an electrode insulating layer and a metal loop electrode, wherein the electrode sub-needle, the electrode insulating layer and the metal loop electrode are coaxially connected in a sleeved mode from inside to outside and are tightly matched with one another. One end of the metal loop electrode is provided with a reducing structure which extends along the central axis direction and has an enlarged aperture; an assembly space is formed between the variable-diameter structure and the electrode insulating layer extending into the variable-diameter structure; a reinforced insulating layer is arranged in the assembly space; the electrode sub-needles, the electrode insulating layers and the reinforcing insulating layers are all provided with extending parts extending out of the diameter changing structures, and the electrode sub-needles are provided with working ends extending out of the extending parts of the electrode insulating layers. Two layers of insulation protection are added between the electrode sub-needle and the metal loop electrode, so that the phenomenon that an electrode insulation layer is broken down or fails due to long-time work of the radiofrequency ablation electrode is effectively reduced, and the durability and the stability of the radiofrequency ablation electrode in use are effectively improved.

The invention discloses a radio frequency signal generator for radio frequency ablation, and belongs to the technical field of signal generators. The invention aims to solve the problems of high complexity and poor stability of generated signals of an existing radiofrequency ablation signal generator. A main control module sends frequency, amplitude and phase setting commands to a main channel and an auxiliary channel of a DDS module according to required radio frequency ablation signals; the DDS module respectively outputs a radio frequency ablation signal and a radio frequency measurement signal with corresponding frequency, amplitude and phase from the main channel and the auxiliary channel according to a set command; the linear power amplifier and impedance matching module carries out amplification and impedance matching on the radiofrequency ablation signal and then outputs the radiofrequency ablation signal to an ablation catheter; the VIP measurement module monitors a radio frequency ablation signal or a radio frequency measurement signal fed back by the ablation catheter in real time, and the main control module compares the feedback signal with the required radio frequency ablation signal and sends an adjustment control signal to the DDS module in real time. The method is suitable for generating radio frequency ablation signals.

The invention relates to an ablation assembly and a radiofrequency ablation catheter, a deformation frame body has a contraction state and an unfolding state, an ablation electrode group comprises a plurality of electrode elements distributed on the surface of the deformation frame body, and in the unfolding state of the deformation frame body, the ablation electrode group comprises a plurality of electrode elements; the plurality of electrode elements can be respectively constructed into a plurality of annular track unit groups and a plurality of linear track unit groups in the axial direction and the circumferential direction of the deformation frame body, the annular track unit groups surround the deformation frame body in the circumferential direction, and the linear track unit groups are linearly distributed in the axial direction of the deformation frame body. A plurality of electrode elements in the ablation electrode set form a plurality of annular track unit sets and a plurality of linear track unit sets in the axial direction and the circumferential direction of the deformation frame body, the ablation treatment range in the blood vessel can be greatly expanded along with unfolding of the deformation frame body, operation such as axial movement and circumferential rotation is not needed any more, and the ablation efficiency is improved. Therefore, large-range treatment can be achieved, the treatment efficiency can be effectively improved, the operation difficulty is reduced, and development of the ablation treatment technology is facilitated.

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 embodiment of the specification provides a radiofrequency ablation device for ablating ocular tissue, the device comprising: an electrode comprising an electrode needle with a needle tip, the needle tip of the electrode needle being configured to be able to extend into an eye; the ablation host is connected with the electrode through a transmission line, and the ablation host comprises a control module, a radio frequency module and an information reading module; two ends of the radio frequency module are respectively connected with the electrode and the control module, and the radio frequency module is configured to provide radio frequency energy for the electrode based on an instruction of the control module; the two ends of the information reading module are connected with the electrodes and the control module respectively, and the information reading module is configured to be capable of reading electrode information of the electrodes and transmitting the electrode information to the control module.

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 relates to a radiofrequency ablation catheter and a radiofrequency ablation device. The radiofrequency ablation catheter comprises a main body tube; a control handle; the mesh basket structure has an expansion configuration and a contraction configuration and can be switched between the expansion configuration and the contraction configuration, the mesh basket structure comprises a reference electrode, a supporting tube, a plurality of flexible branches and a plurality of ablation electrodes, the reference electrode is arranged in the mesh basket structure, the supporting tube is arranged in the main body tube, and the flexible branches are arranged in the main body tube. Each flexible branch is provided with a plurality of ablation electrodes which are arranged at intervals in the length direction of the flexible branch; the mesh basket structure is in the contraction configuration, a first impedance value exists between the ablation electrode and the reference electrode, the mesh basket structure is in the expansion configuration, a second impedance value exists between the ablation electrode and the reference electrode, and the attaching property of the ablation electrode to the inner wall of the blood vessel is determined according to the ratio of the second impedance value to the first impedance value. The target tissue is efficiently treated, and the ablation depth of the radiofrequency ablation catheter is improved.

The present application relates to the field of medical device technology, and specifically to a radiofrequency ablation system for solid tumors and a radiofrequency parameter control method, the method comprising: real-time acquisition of power value, temperature value and pressure value during radiofrequency ablation; based on the difference between the temperature at the end of preheating and the preset target temperature during radiofrequency ablation, and the time required from the start of preheating to the moment when the temperature change trend changes, determine the degree of interference of the temperature of the lesion tissue during the preheating stage; determine the sedimentation influence of the lesion tissue; based on the temperature change amount and pressure change amount at each sampling moment relative to the previous sampling moment in the actual ablation stage, and the difference between the preset target temperature and the temperature value at each sampling moment, determine the ablation intervention degree at each sampling moment; obtain the power value at the next sampling moment during radiofrequency ablation. The present application aims to improve the treatment effect on solid tumors by dynamically controlling the radiofrequency parameters during radiofrequency ablation.

The utility model discloses radiofrequency ablation operation equipment which comprises a hard outer tube, a soft inner tube, a partition plate, a hard conductive tube, an insulating part, an emitting electrode, a thermocouple, a first traction wire and a second traction wire. The soft inner pipe is sleeved with the hard outer pipe, and one end of the soft inner pipe is led out of the hard outer pipe. The partition plate divides the inner space of the soft inner pipe into a first pipe cavity and a second pipe cavity. And the hard conductive tube is propped against one end of the soft inner tube, which is led out of the hard outer tube. The insulating part abuts against the end, away from the hard outer tube, of the hard conductive tube. The emitting electrode comprises an electrode wire and an emitting head, and the electrode wire is arranged in the first tube cavity and electrically connected with the emitting head. The thermocouple is arranged in the second tube cavity and one end of the thermocouple is located in the hard conductive tube. And the first traction wire and the second traction wire are arranged in the first tube cavity and are connected with the hard conductive tube. According to the radiofrequency ablation operation equipment, the temperature around the transmitting head can be monitored in real time, and the angle of the transmitting head can be flexibly adjusted.

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 invention discloses a pair of radiofrequency ablation operating forceps with telescopic and steering functions, and relates to the technical field of medical instruments. The telescopic assembly enabling the extension pipe to extend on the fixed pipe is arranged in the fixed pipe, and the length adjustment of the fixed pipe and the extension pipe can be realized by controlling the telescopic assembly, so that different use conditions can be adapted, and flexible adjustment can be performed during use. The rotary joint rotationally matched with the connecting pipe is fixed to the rear end of the connector, the driving assembly is arranged in the connecting pipe, the rotary assembly matched with the driving assembly is arranged on the rotary joint, angle adjustment of the connector on the connecting pipe can be achieved by controlling the driving assembly, and therefore angle adjustment of the clamping head is achieved; the direction can be conveniently adjusted in a deep narrow area where a hand cannot rotate, and the operation is convenient.

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.

The present application relates to the field of biomedical engineering, and discloses a radio frequency ablation measurement and control system. The system includes a linearized voltage acquisition circuit, a voltage calibration module, and an output module. The linearized voltage acquisition circuit acquires the current radio frequency detection voltage, the voltage calibration module detects the current ablation tissue impedance based on the rated impedance, and corrects the radio frequency output voltage according to the current radio frequency detection voltage and the current ablation tissue impedance, and the output module outputs a radio frequency signal according to the corrected radio frequency output voltage to heat the current ablation tissue. The radio frequency ablation measurement and control system of the present application can quickly and accurately control the output radio frequency ablation energy, protect normal tissue from damage, and improve the cure rate.

The present invention provides an ablation system, which includes a plurality of electrodes configured to contact a patient's body tissue, the plurality of electrodes including two or more ablation electrodes for contacting corresponding positions in a target organ and a return electrode. A signal generating unit includes a plurality of signal generators, the plurality of signal generators being configured to apply corresponding composite signals to corresponding ablation electrodes among the ablation electrodes. The composite signal includes a plurality of corresponding signal components, the corresponding signal components including corresponding ablation signals having different corresponding ablation signal amplitudes and phases at a common ablation signal frequency, and corresponding probe signals having corresponding probe signal amplitudes and different corresponding probe signal frequencies; the processor is coupled to measure the probe signal received by each of the plurality of electrodes, and to control the ablation signal amplitude and phase in response to the measured probe signal.

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.