58 results about "Operative risk" patented technology

The invention discloses a failure restoration retreatment decision-making method based on dynamic occlusion analysis, and the method comprises the steps: constructing a four-dimensional virtual biomechanical model which comprises a patient anatomical structure and a dynamic function through multi-modal data fusion, and enabling the model to be embedded into a real three-dimensional mandibular movement track of a patient to simulate functional movement, thereby breaking through a static analysis blind area, and achieving the real three-dimensional mandibular movement of the patient. The missed diagnosis rate of dynamic interference is reduced; based on quantitative indexes and thresholds such as occlusal contact displacement, occlusal contact distribution symmetry and adjustment quantity of the maximum tooth tip staggering position and the median relation position, experience judgment of doctors is replaced, objectivity, repeatability and accuracy of failure repair and retreatment decision are improved, and excessive or insufficient adjustment is avoided; the treatment effect rehearsal is realized through virtual presetting, the irreversible operation risk is avoided, and the number of times of re-visit and the trial and error cost of a patient are reduced; and meanwhile, the four-dimensional virtual model can be connected with transition and design and manufacturing of a final restoration, so that the accuracy, safety and efficiency of retreatment of a failed restoration are improved.

The invention relates to a gynecological pelvic and abdominal lymphatic cleaning prediction model training method and a lymph node model.The training method comprises the steps that preoperative image data and intraoperative instrument operation parameters of historical patients are subjected to modeling processing, and a dynamic mechanics-fluid coupling lymph node model based on bionic materials is constructed; mechanical deformation and fluid flow of a lymphatic system in various clinical scenes are simulated; performing data acquisition processing on the used lymph node model, and quantifying the dynamic influence of the surgical operation on the lymphatic system; the relevance between historical operation and injury risk is deeply learned, and the lymphatic vessel rupture probability is output; real-time feedback control processing is carried out based on the lymphatic vessel rupture probability, a training correction instruction and a risk thermodynamic diagram are generated, and medical workers are guided to optimize surgical skills. Through fusion analysis of the high-fidelity bionic model and multi-modal data, dynamic simulation of the mechanical-fluid coupling effect in the operation and real-time quantification of the operation risk are achieved, and the accuracy and clinical transformation value of operation training are improved.

The invention relates to the technical field of medical instruments, and discloses a multifunctional laparoscopic gynecological surgical instrument which comprises a handle assembly, a forceps rod connected with the handle assembly, a forceps head assembly arranged at the end, away from the handle assembly, of the forceps rod and a suction assembly. The forceps rod is of a slender tubular structure, and a first channel and a second channel are arranged in the forceps rod side by side. The forceps head assembly comprises a fixed forceps seat, a movable forceps flap and a transmission connecting rod, one end of the transmission connecting rod is hinged to the middle rear portion of the movable forceps flap through a first rotating shaft, and the other end of the transmission connecting rod extends to the end, close to the handle assembly, of the forceps rod. The suction assembly comprises a suction tube and a suction head, the suction tube is arranged in the first channel, and the suction head is telescopically arranged at the far end of the forceps rod and communicated with the far end of the suction tube. The problems of low efficiency and operation risk caused by single instrument function and frequent replacement in a traditional laparoscopic gynecological operation are solved. The instrument realizes seamless fusion and rapid switching of three functions of suction, separation and clamping.

The invention discloses a personalized cerebral aneurysm rupture risk assessment and operation planning system, and relates to the technical field of cerebral aneurysm treatment. The three-dimensional reconstruction module assists a doctor in performing surgical path planning and simulation, assists the doctor in performing surgical path planning, simulates different intervention schemes and visualizes adjacent key structures, so that surgical decisions are optimized, operation risks are reduced, and the treatment success rate is improved; the risk assessment module integrates the rupture probability data and the key morphological parameters, generates a personalized risk assessment report, and provides operation intervention priority suggestions in combination with clinical guidelines so as to enhance the personalized accuracy of assessment; the operation planning simulator simulates an operation process, provides an interactive virtual environment, provides a multi-scheme comparison function, allows a doctor to test various intervention strategies in the virtual environment, and automatically generates a structured operation scheme report for direct calling of the decision support module, thereby realizing whole-process closed-loop optimization.

The invention provides a balloon and protective umbrella integrated device of a hollow structure, and belongs to the technical field of medical instruments.The device comprises a pushing pipe, a cylindrical balloon and a protective umbrella, the cylindrical balloon is arranged at the far end of the pushing pipe, the cylindrical balloon is coaxially provided with a hollow cavity channel with the two ends communicated, the hollow cavity channel is used for blood flow to penetrate through, and the protective umbrella is arranged in the hollow cavity channel. A containing cavity used for containing a filling medium is formed in the side wall of the cylindrical balloon. The protective umbrella is integrally arranged at the far end which is a set distance away from the cylindrical balloon and is used for intercepting the falling emboli in the supporting process of the cylindrical balloon; during working, the cylindrical balloon and the protective umbrella synchronously realize conveying along with the conveying catheter, so that the operation steps are reduced; the technical problems that in the prior art, during balloon dilatation, blood flow is interrupted, operation steps are tedious, operation efficiency is low, and the risk of multi-instrument operation is high are mainly solved.

The invention relates to the technical field of medical equipment, in particular to an integrated bendable multifunctional multichannel endoscopic treatment auxiliary device which comprises an outer tube, a main channel for an endoscope to pass through and a plurality of auxiliary channels for accessories to pass through are arranged in the outer tube in the length direction, and a limiting ring is mounted at the lower end of the outer tube; a plurality of separating strips used for separating the auxiliary channels are arranged on a protrusion of the limiting ring, a communicating hole communicated with the inside and the outside is formed in the position, close to the upper end, of the side wall of the outer pipe, and the upper ends of the auxiliary channels penetrate through the communicating hole to be arranged on the outer side of the outer pipe. By arranging a plurality of auxiliary channels, a plurality of surgical operation tools can be conveniently added to serve as accessories, so that the problems that in the surgical operation process, the accessories are frequently exchanged to complete various surgical steps, the operation efficiency is affected, and the operation risk is increased can be solved.

The invention provides a cardiology department nursing transfer bed, and relates to the field of transfer beds. The nursing transfer bed for the department of cardiology comprises a bottom frame, a support is arranged at the upper end of the bottom frame, a supporting plate is fixedly connected to the middle of the inner wall of the support, and a reinforcing rod is fixedly connected to the front end, close to the supporting plate, of the support. According to the invention, a synchronous electric push rod drives a cam rotating stand, a connecting rod and a connecting rotating rod to be linked, and the cam rotating stand and a fixed rod are matched structurally, so that the bed body is stably lifted and can be accurately matched with the heights of a ward bed, an examination bed and the like, and a servo motor, a screw rod, a threaded sleeve block, a hinge rod and an auxiliary rotating rod are matched to achieve a synergistic effect; the angle of the head plate can be stably and accurately adjusted, the first electric push rod achieves flexible adjustment and control of the leg plate to form a sitting posture state, the second electric push rod drives the whole bed body to rotate through the connecting frame and the rotating column, and physical load and operation risks are greatly reduced when nursing personnel transfer a patient.

The invention discloses a pediatric clinical puncture auxiliary device, which comprises a heating fumigation assembly, a pacifying assembly, an equipment mounting base, an equipment sliding guide rail and an L-shaped supporting arm, and belongs to the technical field of pediatric clinical puncture, the pediatric clinical puncture auxiliary device has an automatic temperature control function, and the use safety is improved; when the temperature in the fumigating barrel is too high, the spring shrinks to drive the contact button to be separated from the fumigating convex edge, a power source of the heating wire is automatically cut off, child patient scalding or equipment damage caused by too high temperature is avoided, manual monitoring is not needed, automatic temperature regulation and control are achieved, and the operation risk is reduced.

The invention discloses a ventricular drainage device, and belongs to the technical field of ventricular drainage, the ventricular drainage device comprises a drainage tube main pipeline and a pressure measuring device, the lower end of the drainage tube main pipeline is provided with a one-way valve I, the drainage tube main pipeline is internally provided with a liquid medicine injection pipeline, and the liquid medicine injection pipeline is internally provided with a one-way valve II; according to the ventricular drainage device, the drainage function, the medicine injection function and the pressure measuring function are integrated, the drainage function is achieved through the drainage tube main pipeline, the medicine injection function is achieved through the liquid medicine injection pipeline, and the pressure measuring function is achieved through the pressure measuring pipeline and the pressure measuring device; according to the multifunctional integrated design, operation risks caused by replacement of multiple instruments are reduced, the clinical operation process is simplified, the treatment efficiency and safety are improved, meanwhile, reflux of liquid medicine or cerebrospinal fluid is effectively prevented through the design of the second one-way valve and the silica gel plug in the liquid medicine injection pipeline, and the risk of intracranial infection is further reduced.

The invention relates to the technical field of medical apparatus and instruments, and discloses an automatic dispensing device for an intravenous administration center, the automatic dispensing device comprises a cabin body, a placing rack is fixedly mounted on the rear side of the interior of the cabin body, the placing rack is used for storing medicines, a bottle supply assembly is mounted on the lower side of the interior of the cabin body, and the bottle supply assembly is used for providing a medicine container; two electric guide rails are installed on the inner side of the cabin body, electric sliding blocks are installed on the outer sides of the electric guide rails, a supporting plate is fixedly installed on the outer sides of the electric sliding blocks, a clamping assembly and a suction assembly are installed on one side of the top of the supporting plate, the clamping assembly is used for clamping a medicine container, and the suction assembly is used for extracting liquid medicine. By additionally arranging an intelligent system, full-process automation and intelligentization of medicine management are achieved, the medicine dispensing efficiency and accuracy are remarkably improved, and human errors and operation risks are reduced.

The invention provides a urethral stenosis dilation device and method, belongs to the technical field of medical instruments, and aims to solve the technical problems of lack of visual guidance and high operation risk in urethral dilation operation. The urethral stricture dilation device comprises a guide head, a guide core, a tube bag, a dilation support and a liquid injection tube. A lens is arranged at the front end of the guide head, the guide core and the tube bag are connected to the rear end of the guide head, the guide core is located in the tube bag, the guide core is sleeved with the expansion support, an elastic film is arranged on the outer circumferential face of the expansion support, and after the liquid injection tube is communicated with the interior of the expansion support, the outer end of the liquid injection tube is led out to the tail end of the expansion device. The problem of high operation risk due to lack of visual guidance in the prior art is solved, and the safety is improved.

The utility model provides an auxiliary clamping simulation device for treating mitral valve regurgitation. The auxiliary clamping simulation device comprises a water bath, a rotating device arranged on the outer side of the water bath and a cam mechanism connected with the rotating device. The bottom support is fixed in the water bath, the valve ring structure is arranged on the bottom support, and the valve leaflet is connected with the valve ring structure and is connected with the cam mechanism through chordae tendineae. The valve leaflet is of a trumpet-like shell structure, one end of the valve leaflet is flat and provided with a first long-strip-shaped opening, the other end of the valve leaflet is cylindrical and provided with a second round opening, and the first opening and the second opening are communicated with each other. According to the auxiliary clamping simulation device for treating mitral valve regurgitation, training simulation operation can be carried out on the mitral valve repairing process, and experiment / clinical operation risks can be reduced.

According to the electric air pressure hemostasis instrument and system, the upper surface of a bottom support is fixedly connected with a supporting column, a lifting column guide groove is formed in the supporting column, the bottom of the lifting column guide groove is fixedly connected with a lead screw motor, the output end of the lead screw motor is fixedly connected with a lead screw, and the interior of the lifting column guide groove is slidably connected with a lifting column; the upper end face of the lifting column is fixedly connected with a hemostasis instrument host, a guide plate guide groove is formed in the lifting column, and the lead screw is connected with a lifting plate through a lead screw nut. Through a lifting mechanism, a double-air-path system and software function integration full-process calibration and data management, full-life-cycle management of the electric air pressure hemostat from clinical application to metering traceability is achieved. In the calibration mode, the system ensures parameter accuracy through a high-precision pressure source and an intelligent algorithm; in the clinical mode, the double-gas-path isolation design guarantees the operation safety, meanwhile, the monitoring efficiency of medical equipment is improved through the function of the internet of things, and the problems that metering traceability is missing and the operation risk is high in the technology are solved.

This invention provides a hollow balloon and protective umbrella integrated device, belonging to the field of medical device technology. The device includes a delivery tube, a cylindrical balloon, and a protective umbrella. The cylindrical balloon is located at the distal end of the delivery tube and has a coaxially arranged hollow cavity at both ends for blood flow. The sidewall of the cylindrical balloon has a receiving chamber for holding the filling medium. The protective umbrella is integrated at a predetermined distance from the distal end of the cylindrical balloon to intercept emboli that may fall during balloon support. During operation, the cylindrical balloon and protective umbrella are delivered synchronously with the delivery tube to reduce operational steps. This invention primarily addresses the technical problems in existing technologies, such as interrupted blood flow during balloon expansion, cumbersome operational steps leading to low surgical efficiency, and high risks associated with multiple instrument operations.

Disclosed in the present invention is a capturable and fixable mitral valve repair device. The present invention relates to the technical field of mitral valve repair devices. The capturable and fixable mitral valve repair device comprises an exposure structure. The exposure structure comprises a traction line, the traction line is fixedly connected to a traction ring by means of a lock-and-key structure, a coaxial rotating ring is arranged on one side of the traction ring, and an adjustable blade is arranged outside the rotating ring. Said device further comprises a capture structure. The capture structure penetrates through the exposure structure during the expansion and exposure of the exposure structure, and the capture structure is unfolded from a folded state to a capture state. Said device further comprises a traction rod. The exposure structure and the capture structure are both located on the traction rod. According to the present invention, by means of integrating the exposure structure and the capture structure into a whole by the traction rod, after completing the exposure in mitral valve repair surgery, the mitral valve can be rapidly captured according to an exposure result and pre-estimation. A capture position and a capture space can be adjusted by a doctor according to actual conditions, thereby reducing the duration and operation risks of the repair surgery.

The invention discloses a clinical orthopedic spine trauma operation fixing device in the technical field of medical instruments, which comprises a main body frame, a spine supporting assembly is fixedly connected to the middle of the main body frame, a head frame assembly is arranged at one end of the main body frame, and a chest pelvis fixing assembly is further fixedly connected to the main body frame. A controller is fixedly connected to one side of the main body frame, and the spine supporting assembly, the head frame assembly and the chest and pelvis fixing assembly are all in signal connection with the controller. The problems that a traditional device is insufficient in supporting stability, difficult to adapt to physiological curvatures of different patients, inconvenient to adjust due to the lack of modular design, low in operation efficiency and the like are solved in a targeted mode. The controller is used for automatically controlling the spine supporting assembly, the six-degree-of-freedom platform and the chest pelvis fixing assembly to optimize supporting pressure distribution, so that stable supporting of the physiological posture of the spine of a patient is achieved, the comfort degree is improved, the operation time is shortened, and the operation risk is reduced.

The application discloses a lung bullae recognition and interventional navigation planning method based on medical topology analysis, and comprises the following steps: obtaining an affine omics feature set and a clinical variable set based on chest CT images and clinical text data; performing rule-preferred feature selection and neural symbol reasoning to generate a knowledge-enhanced feature vector; inputting the three kinds of features into a classifier to obtain lung bullae recognition probability and recognition results; inputting the chest CT images into a double-flow cascaded segmentation network to obtain a lung bullae lesion mask and an airway tree mask; performing three-dimensional skeleton extraction on the airway tree mask to obtain a center line, and constructing an airway topology graph, constructing a lung bullae three-dimensional surface based on the lung bullae lesion mask, and determining a drainage entrance node; and performing reverse backtracking search based on the drainage entrance node in the airway topology graph to obtain a target drainage bronchus path. The application breaks through the end-to-end technical chain from transparent diagnostic stratification to high-fidelity three-dimensional intelligent interventional path planning of lung bullae, and significantly reduces the risk of surgical misoperation.

The utility model discloses a vertebral body reduction auxiliary tool for a lumbar spondylolisthesis ULIF surgery, and relates to the technical field of orthopedic surgery auxiliary instruments. According to the technical scheme, the vertebral body reduction auxiliary tool for the lumbar spondylolisthesis ULIF surgery comprises a first connecting rod and a second connecting rod which are hinged to each other, a first clamp arm is fixed to the lower end of the first connecting rod, second clamp arms are fixed to the lower end of the second connecting rod, and the size of the first clamp arm and the size of the second clamp arm are matched with a clamping groove of a percutaneous screw to be clamped. The utility model has the beneficial effects that the tool not only realizes the stable clamping of the percutaneous screw, but also ensures the high stability and safety in the operation process through the locking mechanism of the bolt and the nut, and greatly reduces the operation risk.

The invention relates to a protection device for deep orthopedic surgery. The protection device comprises a fairlead bone crow plate and a fairlead opening crow plate. The fairlead crow plate adopts the front design and the curved side design of a sheet structure with a heart-shaped outline, and is matched with the soft tissue protection baffle and the fairlead sliding groove, so that blood vessels, nerves and visceral organs can be effectively protected, and the risks of bleeding and misoperation in an operation are reduced. The opening crow plate adopts a T-shaped structure front design and an S-shaped sheet structure side design, a safe operation area is formed, cables can pass through the opening crow plate conveniently, and soft tissue embedding and cable winding are avoided. The fairlead bone crow plate and the fairlead distraction crow plate are used in cooperation, the safety and efficiency of the operation can be remarkably improved, the operation risk and the probability of occurrence of complications are reduced, and the fairlead bone crow plate is particularly suitable for deep orthopedic operations in complex anatomical environments such as pelvis, acetabulum and femur.

The invention relates to the technical field of medical treatment, in particular to a slope puncture, drainage and medicine injection integrated device for infant subdural space, which comprises a fixed base, a lifting mechanism is fixedly connected to the middle of the top end of the fixed base, and a positioning and fixing mechanism is arranged at the top of the lifting mechanism. When inclined plane puncture, drainage and medicine injection are carried out on the subdural space of an infant, in order to prevent the situation that the inclined plane puncture, drainage and medicine injection operation of the subdural space is affected due to the fact that the heads of infants of different sizes shake, the angle adjusting rods are adjusted to be close to the two sides of the heads of the infants, and then the arc-shaped silica gel clamping pads are attached and clamped; a second small electric telescopic rod stretches out and draws back to push an arc-shaped frame in an arc-shaped shell, so that the position of a third small electric telescopic rod is adjusted, a pressing roller is pushed through stretching out and drawing back of the third small electric telescopic rod to fix the head of the infant, movement of the head of the infant due to too small size is avoided, deviation of the puncture position is prevented, and the operation risk is reduced.

The invention relates to a flushing and ultrasonic emulsification all-in-one machine for the ophthalmology department, and belongs to the technical field of medical instruments. The device comprises a machine body, an I / A handle, a filling / suction module, a connecting box and a cleaning mechanism, in order to solve the problems of needle spiral inner wall cleaning blind areas and sleeve detection dead angles, a new cleaning logic is designed, an I / A handle is fixed to a U-shaped positioning frame, a cleaning rod is inserted into a needle, a rubber block at the end of the cleaning rod is matched with a spiral groove, and adhesion impurities at the deep position of the groove bottom are forcibly scraped off along a spiral track in the downward pressing process; meanwhile, the camera is driven by the rotation action to move around the sleeve, and full-circle dynamic optical detection is carried out on the transparent pipe wall; and the sewage discharge assembly is matched to control sewage discharge. According to the invention, mechanical precision recovery of the inner wall of the special-shaped flow channel and non-blind area damage detection of core components are realized, and operation infection and operation risks are effectively reduced.

The invention discloses an integrated flushing and suction device for operation flushing and suction, which comprises a shell, a first connecting pipe, a second connecting pipe, a flushing pipe, a suction pipe, a hot water assembly, a pressing assembly, an air bag assembly, a metal assembly and a medicine delivery assembly, and is characterized in that one end of the first connecting pipe and one end of the second connecting pipe are arranged at the bottom of the shell; the hot water assembly is arranged outside the first connecting pipe and the second connecting pipe; the flushing pipe and the suction pipe are arranged at the top of the shell; the first connecting tube is connected with the flushing tube; the second connecting tube is connected with the suction tube; the air bag assembly is arranged on the shell; the medicine conveying assembly is arranged on one side of the top of the shell; therefore, suction failure caused by blockage of the suction pipeline can be avoided, continuous and clear operation view is guaranteed, and the misoperation risk of doctors is reduced; the operation and anesthesia time can be shortened, and the operation risk and infection probability of a patient are reduced; suction pressure can be kept stable, and extra damage to surgical site tissue is avoided.

The invention belongs to the technical field of medical instruments, and particularly relates to a surgical multifunctional trocar which comprises a trocar body, and the trocar body comprises a trocar outer tube and a trocar inner tube; the trocar outer pipe comprises a trocar head and a trocar sleeve, an inner pipe channel is formed in the trocar sleeve and comprises an inner-layer pipe and an outer-layer pipe, the inner-layer pipe and the outer-layer pipe form an annular cavity, and a cleaning assembly is arranged in the annular cavity; the trocar inner tube comprises a shell, a push rod assembly arranged in the shell and a trocar head assembly connected with the push rod assembly, the push rod assembly is slidably connected with the interior of the shell, and a suture needle is arranged on the outer surface of the shell; according to the multifunctional trocar, the laparoscope lens cleaning and suturing functions are integrated in the trocar structure, the problems that in an existing laparoscope operation, time consumed for lens cleaning is long, the operation view is prone to being lost, and lens fogging occurs are solved, meanwhile, time delay and operation risks caused by frequent instrument replacement are avoided, and the working efficiency is improved. And the risks of trocar hole bleeding and incisional hernia are reduced.

The present invention discloses an anchoring member conveying system, its method, a handle and a magazine, which are provided with a stroke adjusting mechanism for controlling the puncture length, facilitating the adjustment of the length of the puncturing needle piercing into the patient's tissue, reducing surgical trauma and surgical risks. A locking structure is provided to facilitate surgical operations and reduce the risk of surgical misoperations. It has a convenient instrument reset function, so that when the structure jams and fails, the internal structure can be conveniently reset manually to reduce the risk of surgical misoperations. The instrument structure of the present invention has a more reasonable and simple movement, is easy to operate and not prone to errors, and has better reliability.

The invention provides medicine storage tube checking equipment, method and system. The medicine storage tube checking equipment comprises a collecting frame and a checking device arranged at the tail end of the collecting frame. The collecting frame is used for moving the medicine storage pipes into the checking device from the medicine inlet; the checking device comprises a scanning mechanism and a sorting mechanism provided with at least one recovery box. By arranging the collecting frame, collection of the medicine storage tubes is achieved, the scanning mechanism is used for automatically scanning the medicine storage tubes, detection of information of the medicine storage tubes is achieved, the sorting mechanism can be used for controlling the medicine storage tubes to move to a medicine outlet or a recycling box according to the information of the medicine storage tubes so as to complete sorting, and distinguished storage of medicine is achieved; the method greatly improves the efficiency of medicine checking, avoids the high workload and misoperation risk caused by manual operation, meets the demands of medical institutions for refined and efficient management of medicines, facilitates the medical institutions to reasonably manage and control the medicine inventory, and reduces the waste of medical resources.

The invention belongs to the technical field of medical instruments, and particularly relates to a drug delivery device and a method thereof.The drug delivery device comprises a central control board, an anesthesia pump unit is connected with the central control board and used for delivering anesthetic drugs according to an anesthesia plan preset by a doctor, and a physiological monitoring unit is connected with the central control board and used for monitoring the anesthetic drugs. The anesthesia pump unit is used for monitoring vital signs, heart rate, blood pressure, respiration, body temperature, oxygen saturation and electroencephalogram of a patient in real time to evaluate the anesthesia depth, generating first data information and transmitting the first data information to the central control board, the anesthesia pump unit is combined with the monitoring system, and the vital signs and brain waves of the patient are monitored in real time through multiple feedback mechanisms; according to the anesthesia depth and physiological parameters of a patient, the administration amount and the administration rate of the medicine are adjusted in real time, accurate control over the anesthesia effect is ensured, the anesthetic medicine is safely and efficiently released in the whole process, the anesthesia depth is prevented from being too large or too small, and the manual operation risk is reduced.

The application discloses a local anesthetic device for oral cavity and relates to the technical field of medical auxiliary appliances. The appearance shape of the needle causes fear in people, and the exposed needle can make people focus on the pain caused by the needle when the injection is performed, so that the pain is increased. The application provides a local anesthetic device for oral cavity, which comprises a liquid pushing structure, a medicine liquid containing tube and an operating tube connected in an axial direction, and an injection structure arranged at the other end of the medicine liquid containing tube and comprising a retractable needle. The visual fear of the patient can be relieved by the design of the needle shielding structure, the anxiety is reduced, the treatment compliance is improved, and the operation risk is reduced. Meanwhile, the liquid pushing assembly is designed, so that the medical staff can perform one-handed operation.

The application provides a medical model-based needle learning system, and belongs to the technical field of medical virtual learning. The system comprises a model construction module, a model optimization module and a needle practice module. The allowed needle part of a human body is determined, a basic structure model is constructed, a standard needle of the allowed needle part and a structural resistance are attached to corresponding position points of the basic model, a medical model is obtained, and the operation of a learning object in a practice operation process is compared with a corresponding needle standard, so that the practice needle operation in a virtual environment is not limited in number, the actual operation level and speed of the learning object are improved, and the actual operation risk is reduced.

The utility model relates to a closed sputum suction tube which comprises a tracheostomy cover and a middle air tube communicated with the bottom of the tracheostomy cover. The bottom of the middle air pipe is communicated with a tracheostomy atomization mechanism, the tracheostomy atomization mechanism is used for converting medicine into aerosol so that the medicine can penetrate through the lung, the tracheostomy atomization mechanism is located at the bottom of the tracheostomy cover, and the sputum suction pipe mechanism is located between the tracheostomy cover and the tracheostomy atomization mechanism. The design of the sputum suction tube allows sputum suction operation in an oxygen uptake state, so that a patient and medical staff are effectively protected from operation risks, and the sputum suction tube is high in safety, is made of medical materials, is safe and reliable in the use process, does not need to interrupt ventilation in the sputum suction process, and is convenient to use. And airway humidification is facilitated, and cross infection is avoided.