433 results about "Orthopaedic procedures" patented technology

The invention belongs to the field of medical materials. The invention provides a porous artificial bone and a preparation method thereof, the components of the porous artificial bone comprise absorbable macromolecules and an orthopedic inorganic implant material, the mass ratio of the absorbable macromolecules to the orthopedic inorganic implant material is 1: 0.1-2, the porous artificial bone has a through porous structure, the porosity is greater than 70%, and the pore size distribution range is less than 500 [mu] m. The porous artificial bone has a pore structure and mechanical properties beneficial to bone regeneration, the pore diameter is stable, the mechanical properties are appropriate, after the porous artificial bone is implanted into a defect part, the bone volume is always increased, the increase rate of regenerated bone tissue is remarkably improved, the effect of bone conduction is effectively achieved, bone regeneration is very beneficial, and animal experiments prove that the porous artificial bone has a good application prospect. The material can be used for filling and repairing various bone defects in orthopedic surgery. The preparation method is simple, stable and effective, can be absorbed, is low in cost, has great market potential, and is simple, stable and effective compared with a conventional artificial bone preparation method at present.

The invention relates to the technical field of orthopedic surgery, in particular to a system for automatically planning a screw channel range, which comprises a medical image acquisition module used for receiving and preprocessing CT, MRI and other medical images from medical equipment; the three-dimensional reconstruction module is used for performing three-dimensional reconstruction on the preprocessed two-dimensional medical image to generate a three-dimensional skeleton model; the multi-constraint path planning module is used for planning a candidate path set meeting anatomical and mechanical constraints in the three-dimensional skeleton model; the parameter calculation module is used for calculating path information of the candidate path set; and the visualization module draws a screw channel based on the path information and displays related parameters. The method has the advantages that the candidate path set meeting various anatomy and mechanical constraints can be planned in the three-dimensional skeleton model, the path length and the path included angle are calculated according to the candidate path set, the screw channel is drawn based on the path information, and the accuracy and safety of surgical planning are improved.

The invention belongs to the technical field of orthopedic surgery navigation, discloses a communication and positioning integrated orthopedic surgery navigation method and system based on multi-dimensional perception, and aims to solve the problems that in an existing orthopedic navigation technology, optical navigation is prone to being shielded, multipath interference of UWB positioning is serious, and real-time performance is insufficient. Comprising the steps of obtaining measurement values including positioning data of a UWB positioning module, ranging data of a laser ranging module and an attitude angle of an IMU module; according to the method, extended Kalman filtering is adopted, positioning data of a UWB positioning module, ranging data of a laser ranging module and an attitude angle of an IMU module are taken as state vectors, dynamic adjustment of credibility is realized by adjusting a process noise matrix of a state equation and a measurement noise matrix of a measurement equation according to task characteristics, and the credibility of the UWB positioning module is improved according to data of different credibility. And resolving the pose state of the tail end of the surgical instrument. The method has the advantages of high positioning precision, high response speed, high environmental adaptability and high resource efficiency.

The invention discloses a spring probe system for rapid registration of articular cartilage based on 3D printing, and relates to the technical field of medical imaging and orthopedic surgery navigation. The problem that the joint registration precision is insufficient due to the fact that cartilage cannot be developed in traditional CT imaging is solved. Through personalized customization of the 3D printing guide plate, convenient installation of positioning holes, adjustability of the spring probe assembly and real-time data monitoring, and automatic data processing of the intelligent registration module, manual operation is reduced, the operation efficiency is improved, the spring probe assembly is reasonable in structure and adjustable in elastic force, stable operation of the system in an operation is guaranteed, and the operation safety is improved. Multi-position CT scanning is combined with an advanced image processing and registration technology, an accurate initial model is constructed, a spring probe assembly collects data and is combined with an elastic deformation compensation model to correct registration errors in real time, the registration accuracy is improved, reliable support is provided for orthopedic surgery navigation, the surgery success rate can be improved, and patient wounds and surgery risks are reduced.

The invention discloses a personalized orthopedic surgery planning method based on machine learning, and relates to the technical field of personalized medical treatment, and the method comprises the steps: collecting medical data of a patient, generating a personalized basic data set of the patient, building a risk prediction model, and obtaining a predicted surgical risk score; preprocessing the basic data set, and extracting features of the skeleton structure of the patient based on a deep learning algorithm; training the personalized orthopedic surgery planning model, optimizing the historical patient data based on the personalized orthopedic surgery planning model, and predicting an optimal surgery plan; and outputting a personalized operation scheme according to the trained machine learning model. According to the method, machine learning and personalized orthopedic surgery planning are combined, a personalized surgery scheme is customized for each patient, the most suitable surgery scheme is provided for the patient in combination with historical data and the risk prediction model, the surgical treatment effect and the life quality of the patient are remarkably improved, and the method has wide clinical application prospects.

The invention discloses a multifunctional coating capable of forming a long-term stable endogenous electric field to promote antibiosis, and a preparation method and application thereof, and belongs to the technical field of biological functional modification. According to the coating, through the elaborately designed Ta / Ag heterostructure, long-term stable generation of an endogenous electric field is achieved, the antibacterial performance is enhanced, osseointegration is promoted, and the problem of drug resistance is avoided; the coating does not need external electrical stimulation, so that the operation process is simplified, and the clinical application risk is reduced; due to the Ta material, the osseointegration capacity is improved, and Ag has broad-spectrum and efficient antibacterial performance. The TC4-Ta / Ag group has excellent charge storage capacity and a stable electric field, and the long-term osseointegration effect is remarkably improved; according to the preparation method of the coating, the coating which is stable in structure and not prone to falling off can be obtained, the long-term stable antibacterial performance is kept, the coating has wide application prospects in the field of titanium alloy bone implants, a new solution is provided for orthopedic surgery and implant treatment, and the treatment effect and life quality of patients are improved.

The invention discloses an artificial intelligence assisted femoral neck fracture screw path planning system and method, and the system comprises an image collection module, a structure recognition module, a path planning module, a decision feedback module and a robot execution module, and all the modules achieve the linkage through data and control signal interfaces. Structured and data-driven design reference is provided, unnecessary attempts and repeated operations are reduced, the path design efficiency and standardization level are improved, and the implementation mode has good adaptability, can be compatible with existing multi-brand orthopedic robot platforms, is especially suitable for intelligent screw path planning in femoral neck fracture fixation, and has wide application prospects. The method has remarkable advantages in the aspects of technical innovation and industrial application, and is expected to improve the screw implantation precision, shorten the time consumption in the operation, reduce the track adjustment frequency, reduce the radiation exposure risk, and promote the deep development and clinical transformation of the AI-assisted intelligent path control technology in the field of orthopedic operations.

The embodiment of the invention provides an intelligent bone drilling self-adaptive control method for a mechanical arm, which comprises the following steps: acquiring displacement deviation of the tail end of a drill bit of an orthopedic surgical robot, obtaining an error change rate through differential calculation, and combining a bone layer type as an input variable of a fuzzy controller and a feeding speed as an output variable; input variables are fuzzified through a membership function, and a fuzzy language variable set is obtained; according to the set and a preset rule base, constructing a multi-rule group structure comprising three types of scenes of free space, cancellous bone and cortical bone, and setting corresponding fuzzy rule subsets for different bone layers; designing a ''minimum-maximum'' rule activation and combination strategy for reasoning by adopting a Mamdani type fuzzy reasoning method according to fuzzification input and a multi-rule group structure, and generating a fuzzification output variable set; and defuzzification is performed through a gravity center method to obtain a continuous speed instruction, and dynamic regulation and control of the drill bit feeding speed are achieved. When approaching a penetration point, the device automatically decelerates and safely stops, so that the safety and accuracy of an operation are effectively guaranteed, and over-drilling injury is prevented.

A method of operating an orthopaedic surgical system may include displaying a unique identifier on a visual display of a first device positioned in an operating room, the unique identifier being associated with a digital medical record of a patient positioned in the operating room, capturing the unique identifier with a camera of a second device positioned in the operating room, establishing a unique electronic connection between the second device and the digital medical record of the patient based on the unique identifier, capturing one or more images of the patient with the camera of the second device, transferring the one or more images from the second device to the digital medical record of the patient using the unique electronic connection, and accessing the one or more images with the first device to guide performance of an orthopaedic surgical procedure on the patient.

The invention discloses an orthopedic surgery planning and real-time navigation method and system based on artificial intelligence and multi-modal image fusion. The method comprises the following steps: receiving and fusing preoperative multi-modal image data of a patient, and automatically segmenting a key structure by using a deep learning model to generate a three-dimensional virtual model; an optimal operation path is planned through an artificial intelligence model according to the three-dimensional virtual model; the spatial positions of the surgical instrument and the target skeleton area of the patient are tracked in real time through an electromagnetic positioning system, and real-time spatial position data and the three-dimensional virtual model are registered and are fused, overlapped and displayed on a surgical navigation screen; the relative position deviation between the tip of the surgical instrument and the optimal surgical path and the key tissue safety area is calculated in real time, and an early warning is given to a surgeon according to the relative position deviation. The optimal operation path can be accurately and objectively generated so as to ensure the adaptability of the operation path and the patient. Therefore, doctors can pay attention to the operation process specifically, and the operation stability and reliability are improved.

The invention relates to the technical field of orthopedic surgery, and discloses an orthopedic surgery real-time navigation system based on multi-modal image fusion and artificial intelligence. The multi-modal image fusion module is used for generating a three-dimensional skeleton and soft tissue fusion model for surgical navigation; the artificial intelligence analysis module is used for determining a fracture line, a screw implantation angle and a cutting track; the intraoperative tracking module is used for generating a real-time correction instruction; the verification updating module is used for carrying out rationality verification on the real-time correction instruction; if the inspection is not passed, an alarm mechanism is triggered, instantaneous motion state parameters of the surgical instrument are collected, the instantaneous motion state parameters are compared with the cutting track, and the correction instruction is updated according to the comparison result; and the execution module is used for driving the surgical instrument to execute the surgical operation according to the updating correction instruction. According to the invention, manual operation errors can be effectively reduced.

The invention discloses a drilling aiming device for orthopedic surgery, relates to the technical field of orthopedic surgery, and provides the following scheme that the drilling aiming device comprises cross rods, a rectangular mounting plate is arranged between a pair of cross rods, pressure sensors are mounted at the four corners of the mounting plate, and first electric push rods are connected between the stress ends of the pressure sensors and the cross rods; a vertical sleeve is slidably connected to the mounting plate, a rotating cylinder is rotatably connected to the mounting plate, a slidable scale ring is rotatably connected to the rotating cylinder, a supporting frame is mounted below the cross rod, and an abutting block is connected to the supporting frame; the leg is clamped through the abutting block, stability is improved, the mounting plate is pulled in any direction, under the action of the pressure sensor, the first electric push rod shrinks or stretches, the movement angle of the mounting plate is conveniently controlled manually, the scale ring rotates during punching, when the zero scale on the scale ring reaches the pointer, it is indicated that the punching depth is the needed depth, and the punching efficiency is improved. The punching depth is effectively limited, and operation is convenient.

Systems, devices, and methods are disclosed for acquiring and providing information about orthopedic features of a body using acoustic energy. In some aspects, an acoustic orthopedic tracking system includes portable acoustic transducers to obtain orthopedic position information for feeding the information to an orthopedic surgical system for surgical operations.

The invention provides a nail taking device and a nail taking method for the orthopedics department, and relates to the technical field of equipment for orthopedic surgery. The orthopedic nail taking device comprises a base, an operating bed, a second box body, a first box body, two adjusting plates and a nail taking head, the operating bed is fixedly installed at the top of the base, the two adjusting plates are fixedly installed on the two sides of the operating bed respectively, the nail taking head is arranged at the top of the operating bed, and the first box body and the second box body are fixedly installed at the top of the base. The two adjusting plates are rotatably provided with the same operation frame, the top of the operation frame is slidably provided with a cylinder body, the top of the cylinder body is rotatably provided with a limiting cylinder, and the top of the limiting cylinder is provided with a second lead screw in a penetrating manner. The nail taking device for the orthopedics department has the advantages of being convenient to use, capable of preventing a bone nail from loosening and falling off, capable of preventing the bone nail from falling into surrounding tissue due to accidental loosening in the screwing-out process, capable of cleaning the bone nail in time, and capable of preventing impurity drying and cleaning difficulty increase caused by waiting for cleaning.

The invention belongs to the technical field of minimally invasive orthopedic surgeries, and provides a multi-angle precise drilling guider for minimally invasive orthopedic surgeries, which comprises a longitudinal guide frame fixedly connected to one side edge of an operating table through a plurality of bolts, and a pre-positioning mechanism for preliminarily positioning a drilled hole is arranged on the longitudinal guide frame; a guide mechanism for guiding the drilling direction of the drilling rod is arranged in the pre-positioning mechanism, the guide mechanism comprises an outer barrel, the outer part of the outer barrel is slidably sleeved with a ball, and the ball is hinged to the center of the mounting seat; the guide mechanism is arranged, the eight rolling rods are evenly distributed, sliding friction between the drill rod and the inner barrel is converted into rolling friction, the friction coefficient is effectively reduced, power loss is greatly reduced, meanwhile, silicone oil is adopted for lubrication, an oil film is formed on the rolling contact face, friction is further reduced, and according to the diameter change of the drill rod, the diameter of the drill rod can be changed. And the radial distances of the eight rolling rods are electrically and synchronously adjusted, so that rolling supporting of drill rods with different diameters is met, and the applicability is high.

The invention discloses an orthopedic surgery navigation drilling and implant placement intention real-time optimization method based on multi-modal perception, and relates to the technical field of computer-aided surgery, man-machine interaction and intelligent medical equipment. Multi-modal signals such as electroencephalogram, eye movement and myoelectricity of a doctor are collected in real time through XR glasses and an intelligent surgical drill; and inputting the pre-trained micro-world model to generate a current intention vector and predict a future bone structure trajectory. The intention level is judged by calculating the energy distance between the intention and the master template and an emotional value function: when the intention meets the master level condition, the system automatically generates an XR green optimal path and assists in operation; and when the intention is identified as the risk intention, triggering the skykeeper system to lock the equipment and send out an alarm. The system supports a data federation learning evolutionary model, and immediately destroys an original multi-mode signal after encoding to guarantee data security. According to the invention, the real-time monitoring, evaluation and guidance of the operation intention are realized, and the accuracy and safety of the operation are improved.

The invention relates to the field of orthopedic surgery risk assessment, in particular to an orthopedic surgery risk assessment method and system. The method comprises the following steps: acquiring preoperative data and intra-operative data of an orthopedic surgery of a patient, performing data preprocessing on the preoperative data and the intra-operative data, and extracting bone microstructure spatial features in initial orthopedic surgery data by using a cascade feature extraction network; calculating an association weight of the image data and the biological signal through a cross-modal attention mechanism, and constructing a patient specific skeleton model based on finite element analysis to perform real-time scene simulation on the characteristic orthopedic surgery data; the influence of joint contact stress distribution under different osteotomy angles, a bone implant interface micro-motion threshold after implantation of an internal fixation instrument and hemodynamic changes on a bone healing microenvironment is simulated in real time, complications caused by misoperation are remarkably reduced, and the success rate of an operation is increased.

The invention relates to the technical field of orthopedic medical treatment, in particular to a dynamic path planning method and system for an orthopedic surgical robot, and the method comprises the steps: fusing multi-modal medical diagnosis information to construct a three-dimensional model, and formulating an initial scheme containing an obstacle avoidance boundary; in the operation, multi-source data are collected through multi-device cooperation and time sequence alignment is carried out; performing two-dimensional dynamic calibration to generate a compensation value; updating paths and parameters according to a hierarchical strategy, and verifying a security boundary; real-time feedback is realized; and convenient manual intervention is provided. The system comprises a multi-modal data processing module, an intra-operative collaborative acquisition module, a dynamic calibration module, a path adjustment module, a man-machine interaction module and a main control module, and full-process automation is achieved. The operation accuracy and safety can be improved, manual operation of doctors is reduced, clinical requirements are met, and the method has important clinical application value.

The invention discloses an orthopedic surgery navigation positioning method and system based on three-dimensional registration, and belongs to the technical field of orthopedic surgery navigation. According to the method, through preoperative multi-modal image fusion reconstruction, intraoperative dynamic point cloud collection and an improved mixed registration algorithm, precise alignment of a preoperative model and an intraoperative actual skeleton is achieved, and by combining real-time error monitoring and dynamic compensation, precise positioning parameters of a surgical instrument are output to guide surgical operation; the system corresponds to the method and comprises an image acquisition module, a three-dimensional reconstruction module, a registration calculation module, a navigation guiding module, an error monitoring module and a control module, all the modules work cooperatively, and it is ensured that the navigation positioning precision is smaller than or equal to 0.3 mm, the registration time is smaller than or equal to 3.5 s, and the dynamic error compensation response time in the operation is smaller than or equal to 50 ms. The method does not need to depend on a physical marker, does not need a doctor to manually intervene the registration process, is high in anti-interference capability, is suitable for various orthopedic surgery scenes, effectively reduces the surgical risk, and improves the surgical efficiency and the standardization level.

The invention discloses an arthroscope with a variable viewing angle for orthopedic surgery, and relates to the technical field of medical instruments, the arthroscope comprises a control handle, the control handle is provided with an arthroscope body in a penetrating manner, the end part of the arthroscope body is provided with an auxiliary disc, the auxiliary disc is provided with an LED light source for auxiliary illumination, and the side of the LED light source is provided with a camera. According to the arthroscope with the variable visual angle for the orthopedic surgery, when a user needs to adjust the angle of a camera, the user only needs to rotate a rotary knob, so that a visual angle adjusting mechanism starts to operate, the internal pressure of a micro soft actuator is increased at the moment, and deformation and bending occur; the deformed and bent miniature soft actuator can synchronously drive the auxiliary disc to perform angle change, so that the camera is further adjusted, an operator can realize visual angle adjustment only by adjusting a knob, the operation of angle adjustment is simplified, the operation efficiency is improved, a wider visual field is provided for an operation, and the operation safety is improved. And the flexibility of surgical operation is improved.

The utility model discloses a needle type threader for orthopedic surgery, which comprises a threader component, a reset component and a positioning cut-off component, the threader component is arranged on the left side of the reset component, the positioning cut-off component is arranged on the right side of the reset component, the threader component comprises a threading needle and a handle, and the threading needle is arranged on the handle. The reset assembly comprises a positioning block, a first sliding groove, a first spring and a first sliding block, the positioning cut-off assembly comprises a fixing base, a second spring, a pressing plate, a positioning sliding rod, a positioning plate, a fixing block, a cutter, a positioning groove, a connecting block and a third spring, the threading needle is fixedly installed on the left side of the handle, and the positioning block is fixedly installed on the right side of the handle. The needle type threader for the orthopedic surgery is convenient to cut off and good in positioning effect, and solves the problems that a needle type threader in the prior art is not convenient to cut off a thread and is not convenient to position the thread during use, so that the needle type threader is complex to operate during the surgery.

This invention relates to the field of orthopedic surgical risk assessment, and in particular to a method and system for orthopedic surgical risk assessment. By acquiring preoperative and intraoperative data of a patient's orthopedic surgery, the method preprocesses the preoperative and intraoperative data, extracts the spatial features of bone microstructure from the initial orthopedic surgical data using a cascaded feature extraction network, calculates the correlation weights between imaging data and biological signals through a cross-modal attention mechanism, and constructs a patient-specific bone model based on finite element analysis to simulate the characteristic orthopedic surgical data in real time. The method simulates the distribution of joint contact stress at different osteotomy angles, the impact of micromotion thresholds at the bone implant interface and hemodynamic changes on the bone healing microenvironment after internal fixation device implantation, significantly reducing complications caused by improper operation and improving the surgical success rate.

The utility model provides a split type kirschner wire and a kit for an orthopedic surgery robot, and belongs to the technical field of kirschner wires, the split type kirschner wire comprises a front kirschner wire body used for puncturing bones and a rear kirschner wire body used for being connected with an end effector of the orthopedic surgery robot, the front kirschner wire body is detachably connected with the rear kirschner wire body. Compared with Kirschner wire bending operation in the prior art, after the split type Kirschner wire is driven into the human body, the front Kirschner wire body with the proper length can be obtained more conveniently and safely, the problem of positioning displacement or loss caused by excessive pulling of the Kirschner wire is solved, and the Kirschner wire is more convenient to use. After the front kirschner wire body is detached and separated, due to the fact that the connecting end of the front kirschner wire body is smooth and clean, follow-up balloon dilatation kyphoplasty or pedicle screw implanting operation is facilitated, operation risks are reduced, and related operation operations can be carried out more safely, more reliably and more conveniently.

The embodiment of the invention provides a pre-hospital emergency treatment and in-hospital emergency treatment information integrated processing method and system. The method comprises the following steps: capturing three-dimensional space coordinates of a motion trail of an affected limb in real time, and collecting dynamic roundness deviation data; establishing a dynamic first-aid parameter matching mechanism at the edge AI node to perform multi-modal coupling analysis, and generating a first-aid decision vector set carrying fracture parting codes; establishing a pre-hospital-in-hospital information synchronization channel based on an ultra-wideband positioning network, transmitting the emergency decision vector set to a target hospital emergency center, and triggering a multi-modal resource scheduling mechanism of emergency department and orthopedic operating rooms; and automatically generating an analyzable operation preparation instruction set according to the operation guide plate parameter library, and driving the orthopedic operation navigation equipment to be initialized. According to the technical scheme provided by the embodiment of the invention, a full-link closed loop from pre-hospital first aid to intraoperative navigation is realized, the treatment time window is remarkably shortened, and the risks of secondary injury and prosthesis dislocation are reduced.

The invention relates to a front sight laser aiming auxiliary device which is used for guiding a kirschner wire to present a point-shaped perspective shadow on a C-arm screen in an orthopedic operation, and belongs to the technical field of medical instruments. The device aims at solving the problems that in traditional Kirschner wire perspective point forming operation, repeated perspective depends on the experience of an operator, radiation exposure is large, and operation precision is difficult to guarantee. The device mainly comprises a front sight base which can be fixed on the surface of a receiver of the C-arm machine, wherein a ball head base is arranged in the center of the front sight base; and the ball head laser indicator is arranged on the base and is adjustable in laser direction. When in use, the perspective image is adjusted to the central position of the front sight on the screen by moving the metal point on the operating table. Installing a laser lamp, adjusting the laser lamp to irradiate on a metal point on an operating table, and screwing a nut to fix the position of the laser lamp at the moment. Therefore, a visible laser guide line coinciding with the path of the target X-ray beam is established. And an operator only needs to adjust the guide needle along the laser ray and place the guide needle, so that the guide needle can be stably developed in a point shape in a perspective image, and accurate and rapid screw guide needle placement is realized. The device is simple in structure, low in cost, intuitive in operation, capable of remarkably reducing intraoperative radiation and reducing dependence on experience of operators, and suitable for being used in hospitals of all levels to carry out precise orthopedic surgery under perspective guidance.

The invention provides a multi-mode integrated intelligent operation shadowless lamp and an application control method thereof, and provides a novel intelligent shadowless lamp which can provide a multi-mode operation auxiliary function in operation application. According to the shadowless lamp, based on voice interaction and background intelligent analysis, functional services such as intelligent and whole-course operating room lamplight can be achieved. The shadowless lamp has a mechanical arm automatic driving function, and can be automatically stretched to a spatial body position required by a corresponding operation type according to preset control parameters, so that the operation of a nurse is saved. Meanwhile, corresponding shadowless lamp brightness adjustment, operation recording and camera shooting and X-ray shooting starting can be achieved under voice control, so that the shadowless lamp is suitable for the orthopedic operation, the application service function of the shadowless lamp is greatly improved, the operation progress is accelerated, manpower resources of itinerant nurses are saved, the situation that recording and other situations occupy the operation view is avoided, and the operation contact infection risk is reduced.

An orthopaedic surgical instrument includes a 4-in-1 cutting block and a removable alignment guide. The alignment guide is configured to contact the posterior femoral condyles of a patient's femur so as to kinematically align the 4-in-1 cutting block. A number of shims are selectively installed on the alignment guide to account for any cartilage loss present on the patient's femur. A method of surgically preparing a patient's femur utilizing kinematic alignment is also disclosed.

1. Name of the Design Product: Metal Patch (Porous Structure). 2. Use of the Design Product: For orthopedic surgery. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photo that Best Illustrates the Design Key Points: Perspective View 1.

An orthopedic saw configured for orthopedic surgical procedures may include an element including a cutting surface, a drive mechanism, and a handle. The drive mechanism may be configured to move the cutting surface in a continuous recirculating motion. The handle may be configured to guide the cutting surface along a cutting path.

The application relates to a bendable electrode with a liquid channel and a system thereof, and belongs to the technical field of orthopedic surgical instruments. The bendable electrode comprises a handle, a plasma electrode and an insertion part. The insertion part is connected to the handle at one end, and comprises an outer tube and an inner tube. The outer tube is movably arranged in the handle at a proximal end and can move along the axis direction of the outer tube, and the distal end of the outer tube is provided with an outer bendable section. The inner tube is arranged in the outer tube, and the proximal end of the inner tube is fixedly connected to the handle, and the distal end of the inner tube is provided with an inner bendable section. The plasma electrode is arranged at the distal end of the inner bendable section, and is provided with a liquid injection port. The inner and outer tubes with multi-dimensional adjustment capacity are arranged in the insertion part, the snake bone structure is matched with the telescopic outer tube, and the electrode system can realize flexible guidance and multi-angle accurate positioning in a complex surgical path.