366 results about "Interventional treatment" patented technology

The invention relates to the technical field of vascular surgery, in particular to a vascular surgery interventional intracavity treatment postoperative complication prediction and management system which integrates data acquisition, processing, model training, prediction analysis, comprehensive decision and early warning management and is specially designed for vascular surgery interventional intracavity treatment. The system monitors the postoperative physiological indexes of a patient in real time through multiple sensors, combines clinical data and disease history, carries out physiological sequence prediction and image analysis by utilizing RNN and CNN models, and accurately evaluates the risk of complications. The comprehensive decision-making module generates a personalized management scheme, and the early warning management module monitors in real time and pushes early warning and suggestions in time when abnormity occurs. The system not only improves the prediction accuracy and the management effect, but also optimizes the medical resource configuration, enhances the patient experience, contributes to the development of precise medical treatment and intelligent management, and effectively solves the key problem of postoperative complication prediction and management.

The invention provides a CT guided liver puncture training method and system based on virtual reality, and relates to the technical field of virtual reality. A deformable liver model and a virtual CT reconstruction engine under respiration driving are constructed, needle body posture mapping and image fusion display are achieved by fusing an inertia-electromagnetic dual-mode sensor, path interaction control, tissue dynamic response and score feedback are supported, the scene difficulty is automatically adjusted based on a training result, and the accuracy and the reliability of the system are improved. Progressive puncture skill training of static breath-holding, shallow breath and free breath scenes is achieved, the sense of reality of training, operation feedback and teaching efficiency are improved, and the system is suitable for development and clinical teaching application of an interventional therapy training system under the guidance of medical images.

The invention provides a clinical diagnosis and treatment path generation method and system for tracking a chest pain patient. Wherein a dynamic spatio-temporal data atlas is constructed by synchronously collecting respiratory rhythm phase difference, coronary artery calcification integral and hypersensitive troponin curve slope, and risk degree transition signals are generated by coupling analysis of ST segment elevation amplitude asymmetric growth, left ventricular ejection fraction attenuation gradient and B-type natriuretic peptide release rate. In the acute stage, the constraint relation between a vascular recanalization time window and thrombolysis taboo is dynamically bound, in the subacute stage, a phase synchronization rule for enhancing CT scanning and anticoagulant drug dosage is established through a multidisciplinary interface, intravascular ultrasonic plaque morphological mutation characteristics and extracorporeal circulation parameters are fused, the blood supply reconstruction time sequence is dynamically adjusted based on a myocardial oxygen consumption balance equation, and the thrombolysis time sequence is determined. And path self-optimization is realized through space-time superposition of an interventional therapy delay parameter and a drug metabolism curve. According to the technical scheme provided by the invention, chest pain diagnosis and treatment path dynamic optimization and multi-modal parameter collaborative decision-making are realized, and the risk layering precision and the treatment timeliness are improved.

The invention relates to the field of medical data analysis, in particular to an interventional therapy patient perioperative period pain data analysis method and system. An interventional therapy patient perioperative period pain data analysis system comprises a data acquisition module, a weight acquisition module, a pain prediction module and a pain monitoring module. According to the method, a standardized multi-source data coding system is established, pre-operative static characteristics and intra-operative dynamic time sequence signals are subjected to nonlinear weight calculation based on mutual information coefficients, complex threshold correlation and interaction effects among parameters are captured, and then a parallel architecture of an LSTM network and a static weighting layer is adopted; deep correlation information of a time sequence dependence mode generated by intraoperative operation and basic background parameters is extracted, the recognition ability of the model for high-risk patients is improved, and high-precision prediction of the pain intensity and type in the perioperative period is achieved.

The invention relates to an intervertebral disc degenerative change analysis system based on multi-dimensional information. The system comprises a data processing module, a modifiable factor processing module, a circular RNA data processing module, a biomarker processing module, an image processing module, a treatment information processing module, a diagnostic feature anchoring module, a model generation module and a change analysis module. Anchoring is carried out on circular RNA, biomarkers, treatment information and modifiable factors through image information to form an anchoring network, and a reliable and effective basis can be provided for disease course analysis through big data and a large number of research results, so that each doctor has a targeted expectation and understanding on the disease course of a patient in the diagnosis stage; the method has the advantages that an interventional therapy scheme can be arranged in advance or the condition of a patient can be observed in real time, research results can be collected and fed back in time through big data, the information utilization rate is increased, and an information dimension integration scheme for degenerative disease recognition is created, and the accuracy of recognition results is improved.

The invention provides a recoverable intravascular stent, and belongs to the technical field of interventional therapy instruments. The stent comprises a first stent body, a second stent body and an isolation component, and the outer side wall of the first stent body is used for directly supporting a blood vessel and can automatically contract in the radial direction; the second stent is coaxially arranged on the inner side of the first stent and used for supporting radial expansion of the first stent; the isolation part is arranged on the first bracket and / or the second bracket and is used for reducing the friction force between the first bracket and the second bracket; when the stent is taken out, the second stent is gradually taken out from the inner side of the first stent, the first stent automatically and radially contracts in the process of losing the support of the second stent to reduce the embedding force with the side wall of the blood vessel, and the whole stent is conveniently taken out; the intravascular stent is mainly used for solving the technical problems that in the prior art, the intravascular stent is large in resistance and not easy to take out.

The invention relates to an interventional therapy target accurate positioning method and system based on an ultrasonic image. According to the method, a binary mask is generated by extracting an acoustic shadow area in an ultrasonic image, contrast enhancement parameters of different areas are dynamically adjusted based on the binary mask, and target spot edge details are enhanced while shadow area noise is suppressed; a shadow mask attention mechanism is combined to guide a neural network to accurately segment a target point probability graph, a segmentation boundary is evolved and optimized by integrating a level set constrained by a shadow region shape, and local smooth compensation is performed on registration deviation of a three-dimensional reconstruction model and a preoperative image by using a shadow perception deformation field correction strategy; and finally generating a puncture path for avoiding the dangerous structure. The problems of fuzzy target boundary, segmentation error accumulation and deformation compensation misalignment of a traditional method under acoustic shadow interference are effectively solved, and the pertinence of image enhancement, the accuracy of target positioning and the safety of an intervention path are remarkably improved.

The invention discloses an interventional therapy path planning system based on ultrasonic imaging, and relates to the technical field of interventional therapy systems.An image acquisition module acquires a two-dimensional or three-dimensional ultrasonic image of an operation area, and standardized input of image data is achieved; the structure identification module executes a medical image segmentation task based on the ultrasonic image and identifies a key anatomical structure in the image; the geometric modeling module constructs a three-dimensional space model according to the structure recognition result; the thermal simulation prediction module comprises a heat conduction simulation sub-module and a thermal parameter dynamic adjustment sub-module; the temperature feedback module reconstructs a three-dimensional temperature field image in the target tissue based on the tissue temperature feedback signal; the parameter updating module executes real-time updating of heat conduction parameters based on the residual error between the predicted temperature field and the observation temperature field collected by the temperature feedback module; the problems that in existing interventional therapy, thermal control precision is low, path planning depends on experience, and tissue dynamic changes are difficult to deal with are effectively solved.

The invention discloses a blood vessel OCT image training method, a blood vessel OCT image generating method and a blood vessel OCT image training device based on a DCN cross-modal fusion network and structure-blood flow coupling modeling. The method comprises the following steps: acquiring image data marked with a blood vessel segmentation result and a plaque position; acquiring the preprocessed OCT image data; registering the image data marked with the blood vessel segmentation result and the plaque position and the OCT image data so as to obtain registered image data; acquiring hemodynamic parameters; inputting the coronary artery CTA image, the image marked with the blood vessel segmentation result and the plaque position and hemodynamic parameters into a cross-modal fusion network based on deformable convolution so as to obtain CTA features of the cross-modal fusion network; and inputting the CTA features of the cross-modal fusion network into a trained OCT generation network so as to obtain a cross-section OCT image containing blood vessel wall and plaque information. The method can replace part of invasive OCT examination, assist doctors in assessing plaque vulnerability and guide interventional therapy.

The invention provides conveying equipment for surgical interventional therapy of congenital heart diseases, and belongs to the field of medical equipment. Comprising a guide pipe, a traction pipe and a conveying pipe, the upper end and the lower end of the guide pipe are open, the conveying pipe is located in the traction pipe, a sealing plate is fixedly connected to the lower end of the inner surface of the guide pipe and makes sliding contact with the outer surface of the traction pipe, and a conveying assembly is arranged at the upper end of the conveying pipe; the conveying assembly comprises a fixing sleeve fixedly connected with the upper end of the outer surface of the conveying pipe. By arranging the conveying assembly, a support is clamped and fixed through a contact plate, the support is stored and placed in a guide pipe, a good protection effect on the support in the conveying process can be achieved, and therefore the probability that the support falls off accidentally in the conveying process can be reduced; and therefore, the stability and the safety of the conveying equipment in the working process can be effectively improved.

The invention relates to the technical field of medical interventional therapy materials, and particularly discloses a preparation method of sodium hyaluronate embolism microspheres and the prepared embolism microspheres. The preparation method of the sodium hyaluronate embolization microspheres comprises the following steps: S1, adding methacrylic anhydride, N, N-dimethylformamide and sodium hydroxide into a sodium hyaluronate aqueous solution, reacting, adding sodium chloride, reacting, adding absolute ethyl alcohol, precipitating, filtering to remove filtrate, cleaning and drying; s2, preparing a mixture of methacrylated sodium hyaluronate, a monomer with negative charges, an initiator and water into a water phase; a mixture of oil soluble liquid and a dispersing agent is used as an oil phase; and under the protection of nitrogen, carrying out reverse suspension polymerization. According to the preparation method of the sodium hyaluronate embolization microspheres, the methylacryloylated sodium hyaluronate and the negatively charged monomer are copolymerized to introduce the negatively charged group, so that the microspheres can effectively load chemotherapeutic drugs, and the compression elasticity is high.

A medical instrument for interventional therapy. An implant delivery mechanism (1000) comprises a puncture needle (1010) and a needle actuator (1020), and the needle actuator (1020) is connected to the puncture needle (1010) and moves synchronously in the axial direction of the puncture needle (1010); and a trigger mechanism (2000) is detachably connected to the implant delivery mechanism (1000), the trigger mechanism (2000) comprises a force storage release member (2010), and the force storage release member (2010) is connected to the needle actuator (1020) and moves synchronously.

The novel multichannel drainage device for liver and gall interventional therapy comprises a liquid collecting bag and a communicating pipe arranged at one end of the liquid collecting bag, a collecting barrel is arranged at the other end of the communicating pipe, and a plurality of drainage pipes are arranged at the other end of the collecting barrel; wherein sensor bodies are arranged at the middle ends of the drainage tubes, side holes are formed in the side faces of the top ends of the drainage tubes, and the drainage tubes are communicated with the collecting barrel and communicated with the communicating pipe. And a safer and more effective treatment tool is provided for liver and gall interventional therapy.

The invention discloses a medical model for simulating vascular interventional therapy, and relates to the technical field of medical treatment. The blood vessel model is detachably connected to the upper surface of the model base, one end of the blood vessel model is closed, the other end of the blood vessel model is open, and a plug is installed at the opening of the blood vessel model in an interference fit mode; the catheter is arranged in the blood vessel model in a penetrating manner, one end of the catheter is arranged on the plug in a penetrating manner, and the other end of the catheter is connected with a thrombus model; and the adjusting piece is arranged at the end part of the catheter and is used for adjusting the distance between the thrombus model and the inner wall of the blood vessel model. According to the invention, the thrombus model is arranged in the blood vessel model, so that a new medical worker can perform simulation operation, and the adjusting part is arranged and can adjust the distance between the thrombus model and the inner wall of the blood vessel model, so that the position of thrombus in the blood vessel under a real operation condition can be simulated; therefore, medical staff can adopt different modes to carry out interventional therapy on thrombus.

The invention belongs to the technical field of medical instrument disinfection, and particularly relates to a bone tumor interventional therapy device with an auxiliary positioning function, the bone tumor interventional therapy device comprises a main frame, a supporting mechanism, a positioning mechanism, an interventional mechanism and a universal adjusting mechanism, the supporting mechanism is arranged on the side wall of the main frame, and the interventional mechanism is arranged on the universal adjusting mechanism; the universal adjusting mechanism comprises a rotation adjusting mechanism and an angle adjusting mechanism, the rotation adjusting mechanism is arranged at the bottom end of the supporting mechanism, the positioning mechanism is arranged at the bottom end of the rotation adjusting mechanism, and the angle adjusting mechanism is arranged at the bottom end of the positioning mechanism. Through the innovative design of the supporting mechanism, intelligent adjustment of an intervention position is realized, and the operation convenience and the positioning precision are improved; the positioning mechanism can accurately mark the tumor position, and manual judgment errors are avoided; the intervention mechanism can realize automatic fixation and depth calibration of a puncture needle, and the puncture accuracy is improved; the universal adjusting mechanism achieves all-directional and all-angle adjustment of the puncture needle.

The utility model discloses a vascular intervention catheter assembly and a vascular intervention device.The vascular intervention catheter assembly comprises a main catheter and a supporting catheter, and the main catheter comprises a first catheter cavity; the supporting catheter comprises a second catheter cavity; the vascular intervention catheter assembly at least comprises a first operation state and a second operation state, and in the second operation state, the main catheter penetrates to the target blood vessel position, and the supporting catheter penetrates into the first catheter cavity and reaches the target blood vessel position. The problems that in the prior art, when catheter supporting force is insufficient, interventional operation difficulty is increased, operation is more complex, and efficiency is low are solved. According to the vascular intervention catheter assembly and the vascular intervention device, when the supporting force of the main catheter is insufficient to complete the interventional operation, the supporting catheter is arranged in the first catheter cavity of the main catheter in the penetrating mode, so that the main catheter and the supporting catheter achieve dual supporting on the target vascular position, the supporting force on the target vascular position is improved, and the interventional operation is more accurate. Compared with the prior art, the sheath tube and the catheter do not need to be pulled out again for replacement, the operation difficulty is reduced, the operation operation is simplified, and the interventional treatment efficiency is improved.

The invention relates to the technical field of medical image processing and interventional therapy assistance, and discloses an intubation fluorescent image feature learning system for hepatic artery chemoembolization. Comprising an image acquisition module which is configured to acquire a distortionless two-dimensional fluorescent blood vessel image in a hepatic artery chemoembolization super-selective intubation process; the control module is used for extracting surface geometric features of the blood vessel from the two-dimensional fluorescent blood vessel image; inputting the surface geometric features to a preset spatial reasoning model, and outputting a spatial distribution probability matrix of each blood vessel part; capturing a difference signal between the spatial distribution probability matrix and angiography feedback data in an actual intubation process in real time, and forming an iterative training data set to optimize the spatial reasoning model; and identifying a potential complex blood vessel region according to the spatial distribution probability matrix, generating an intubation path early warning signal, and generating guide parameters of X-ray release opportunity and dose based on the early warning signal so as to reduce radiation exposure.

The invention relates to the technical field of medical guide wire storage, and discloses a guide wire storage mechanism for coronary heart disease interventional therapy, which comprises a shell, a motor I is arranged on the outer wall of the shell, the output end of the motor I penetrates through the interior of the shell and is fixedly provided with a screw rod, and the outer wall of the screw rod is in threaded connection with a sliding block I; a sliding rod is slidably connected to the interior of the first sliding block, the two ends of the sliding rod are fixedly connected to the inner wall of the shell, a triangular plate is fixedly connected to the lower surface of the first sliding block, a sprinkling can is arranged on the lower surface of the triangular plate, a spraying head is arranged on the inner wall of the sprinkling can, and a telescopic pipe is fixedly connected to the outer wall of the sprinkling can. A plurality of guide wires can be stored through the partition plate, the guide wires can be disinfected in cooperation with a first motor, a lead screw, a first sliding block, a sliding rod, a triangular plate, a sprinkling can and a spray head when the guide wires are stored, cross infection among different patients in subsequent use is prevented, the guide wires at different positions can be disinfected independently, and manpower and disinfection resources are saved.

The invention relates to a stent that reduces the damage that occurs after brain haemorrhage, for use in the treatment of aneurysms that have ruptured or require intervention. The stent of the invention comprises an exoskeleton (1), a curved conical structure (2) positioned in the centre of the stent (1), bridge (3), flap (4) and silicone sheath (5).

The invention is applicable to the technical field of medical instruments, and provides an interventional therapy device for alimentary canal hemorrhage, which comprises an outer sleeve and a guide wire arranged in the outer sleeve, and further comprises a plurality of hemostatic clips, each hemostatic clip comprises a cylindrical body, a ball head is fixed at one end of each cylindrical body, and the other end of each cylindrical body is rotatably connected with two clamping jaws; a guide cavity is formed in the cylindrical body in the length direction, a guide block is slidably connected into the guide cavity, a tension spring is fixed to the end, close to the ball head, of the guide block, and the tail end of the tension spring is fixed into the guide cavity; when a plurality of hemostatic clips are sequentially connected end to end, the two clamping jaws on one hemostatic clip clamp the ball head on the adjacent hemostatic clip, so that the two adjacent hemostatic clips are in ball joint. A plurality of hemostatic clips can be placed in the outer sleeve at a time, a plurality of hemostatic clips can be used in sequence, the outer sleeve and the guide wire do not need to be repeatedly pulled out from a biopsy duct of an endoscope during use, then the surgical efficiency is improved, and surgical operation steps are simplified.

The invention relates to the technical field of ablation path planning, in particular to a liver cancer thermal ablation path planning system based on deep reinforcement learning. The system comprises a target and dangerous area mask generation module, a pipeline distance field construction module, a thermal field prediction module, a breathing deformation prediction module, a multi-scale feature fusion module, a behavior preference reward module, a composite reward function module and a decision output module. Clinical pain points such as breathing interference, dangerous area avoidance and individualized adaptation are broken, the precision and safety of the liver cancer thermal ablation operation are improved, normal tissue damage and complications are reduced, intelligent decision support is provided for interventional therapy, and liver cancer minimally invasive therapy is promoted to be upgraded to precision and intelligence.

The invention provides an interventional operation magnetic control guide wire capable of repeating magnetic orientation. The interventional operation magnetic control guide wire comprises a core wire and a coating layer, the core wire is coated with the coating layer; the coating layer comprises magnetic composite particles and a first high-molecular polymer; the magnetic composite particles comprise magnetic powder and a low-temperature phase change material compounded on the surface of the magnetic powder. Compared with the prior art, the magnetic control guide wire provided by the invention can perform magnetic orientation after the guide wire is prepared, and magnetic field orientation does not need to be performed in the guide wire forming process, so that the guide wire preparation difficulty is simplified from the process; and meanwhile, magnetic orientation treatment can be carried out again according to requirements. The magnetic control guide wire is simple in production process, capable of achieving repeated magnetic orientation, excellent in magnetic response performance and operation flexibility and suitable for various minimally invasive surgeries and interventional therapy.

The invention discloses a coronary artery interventional therapy complication monitoring and early warning method and system, and relates to the technical field of coronary artery complication prevention, and the method comprises the steps: building a concerned complication preference matrix of a real-time patient coronary artery interventional therapy mode; according to the physiological state of the patient and the coronary artery interventional therapy postoperative maintenance medicine list, whether the coronary artery interventional therapy postoperative return visit multi-source parameters of the patient are in a reasonable range interval or not is evaluated in real time; based on the concerned complication preference matrix of the coronary artery interventional therapy mode of the patient, performing fuzzy division on the postoperative return visit multi-source parameters of the coronary artery interventional therapy of the patient to obtain a concerned complication preference personalized time sequence parameter matrix of the coronary artery interventional therapy mode of the patient, and analyzing the change trend of each complication preference personalized time sequence parameter; and predicting a complication high-risk time window of the coronary intervention treatment mode of the patient, and generating coronary intervention treatment complication monitoring early warning. The method has the advantages that the complication early warning accuracy is improved, and the postoperative complication monitoring efficiency is improved.

The invention discloses an adjustable thrombus breaking guide wire, and belongs to the technical field of interventional therapy instruments, the adjustable thrombus breaking guide wire comprises a guide wire, a thrombus breaking guide wire and a controller, and the position, close to the far end of the guide wire, of the guide wire is provided with a limiter; the thrombus breaking guide wire is slidably connected with the limiter, the far end of the thrombus breaking guide wire is connected with the far end of the guide wire, and the area between the far end of the guide wire and the limiter is a deformation area of the thrombus breaking guide wire; the controller is connected with the thrombus breaking guide wire, and the controller is used for recovering or releasing the thrombus breaking guide wire. The thrombus breaking guide wire is bent and deformed at the position close to the far end of the thrombus breaking guide wire to form a thrombus breaking structure for breaking thrombus, or the thrombus breaking guide wire is used for bending the guide wire so as to turn in a blood vessel, and a simpler structure, richer functions, lower cost and higher flexibility and bending resistance are achieved; the accuracy and the safety of the operation can be improved, and the treatment requirements of more complex diseases can be met.

The present disclosure relates to the field of interventional treatment technology, and in particular, to an interventional treatment system and an ultrasonic catheter for interventional treatment. The ultrasonic catheter for interventional treatment comprises: a dual-cavity micro-catheter, comprising a first guide cavity and a first core part cavity; a sound transmission section, comprising a second core part cavity and a second guide cavity, wherein the second guide cavity is provided with a guide wire outlet, and the first core part cavity and the second core part cavity both extend in a pushing direction and are arranged in parallel; a core part, wherein a distal end of the core part is provided with an ultrasonic transducer, the core part is arranged in the second core part cavity and the first core part cavity, and the ultrasonic transducer is arranged in the second core part cavity; and a rapid exchange section, connected to a distal end of the sound transmission section, wherein a leading guide wire passes through the rapid exchange section from a distal end to a proximal end. The device has the functions of ultrasonic imaging for intravascular diagnosis and guide wire intervention. The guide wire puncture can be guided in real time under the guidance of intravascular ultrasound (IVUS), so as to build a channel entering the real lumen of a blood vessel at a distal end of an occluded section, thus improving the operation success rate.

This invention relates to the field of medical device technology, specifically to an auxiliary device for hepatic artery angiography in interventional treatment of liver cancer. The device includes a fixed carrier with a flexible base and several supporting components. Each supporting component includes several arc-shaped connecting strips hinged together. Several adjustment boxes are installed on both sides of the flexible base, each containing an adjustment component. Each adjustment component includes a drive element with a bidirectional lead screw fixed to it. Nut seats are threaded to both ends of the bidirectional lead screw, and sliders are fixed to the nut seats. Traction cables are fixedly connected to the sliders, and the traction cables are hinged to the nodes of the arc-shaped connecting strips. The drive element is signal-connected to a control module. The control module controls the drive element to rotate the bidirectional lead screw forward and backward according to preset patient body shape parameters. This causes the sliders to slide through the nut seats, thereby causing the traction cables to pull the nodes of the arc-shaped connecting strips. This invention achieves multi-dimensional safety protection through mechanical structure linkage and sensor feedback, reducing surgical field interference.

The invention relates to the technical field of medical instruments, and discloses an intervention pump conveying device which comprises an expansion assembly, a conveying assembly and a pushing assembly, and the conveying assembly comprises a front end assembly and a rear end assembly which are detachably and fixedly connected; the expansion assembly is detachably and fixedly connected with the front end assembly, the front end assembly and the rear end assembly are connected to form an intervention channel allowing the pushing assembly to carry the intervention pump to penetrate through, and the pushing assembly is provided with a pushing channel allowing a pump line of the intervention pump to penetrate through in the axial direction. The pushing assembly can fix or loosen a pump line of the intervention pump so as to achieve pushing and releasing of the intervention pump. The invention further discloses another conveying method of the interventional pump. By constructing a split type collaborative structure, accurate pushing and stable releasing of the interventional pump are achieved, mechanical invasion and occupation to punctured blood vessels are reduced, the risk of complications such as thrombosis and bleeding is reduced, the surgical operation process is simplified, and the minimally invasive property and safety of interventional therapy are improved.

The present invention discloses an adjustable thrombus-breaking guidewire, which belongs to the technical field of interventional treatment instruments, and comprises a guide guidewire, a thrombus-breaking guidewire and a controller, wherein a limiter is arranged near the distal end of the guide guidewire; the thrombus-breaking guidewire is slidably connected to the limiter, the distal end of the thrombus-breaking guidewire is connected to the distal end of the guide guidewire, and the area between the distal end of the guide guidewire and the limiter is the deformation area of ​​the thrombus-breaking guidewire; the controller is connected to the thrombus-breaking guidewire, and the controller is used to recycle or release the thrombus-breaking guidewire. The present invention allows the thrombus-breaking guidewire to bend and deform near its distal end to form a thrombus-breaking structure for thrombus-breaking, or uses the thrombus-breaking guidewire to bend the guide wire so as to turn in a blood vessel, thereby achieving a simpler structure, richer functions, lower costs, and higher flexibility and anti-bending performance, which helps to improve the accuracy and safety of surgery and meet the treatment needs of more complex diseases.

The application provides a recyclable vascular stent, and belongs to the technical field of interventional treatment instruments; the stent comprises a first stent, a second stent and a separation component; the outer side wall of the first stent is used for directly supporting a blood vessel and can automatically contract in a radial direction; the second stent is coaxially arranged on the inner side of the first stent and is used for supporting the first stent to expand in a radial direction; the separation component is arranged on the first stent and / or the second stent and is used for reducing the friction between the first stent and the second stent; when the stent is taken out, the second stent is gradually taken out from the inner side of the first stent, and the first stent automatically contracts in a radial direction in the process of losing the support of the second stent to reduce the embedding force with the side wall of the blood vessel, so that the taking out of the whole stent is facilitated; and the technical problem that the existing technology has a large resistance and is not easy to take out when the vascular stent is taken out is solved.

The invention relates to a tumor embolic agent dose evaluation method and device, equipment and a storage medium. The method comprises the following steps: acquiring a multi-modal medical image of an interventional object; at least partial region of the interventional object contains a tumor, and the multi-modal medical image comprises tissue images for the tumor collected by at least two imaging modes; performing feature extraction processing on the multi-modal medical image to obtain image omics features and contrast perfusion features in the multi-modal medical image; a reference embolic agent dose required for performing tumor embolic agent interventional treatment on the tumor of the interventional subject is evaluated based on the image omics characteristics and the contrast perfusion characteristics. By adopting the method, the accuracy and feasibility of evaluating the dosage of the tumor embolism agent can be improved, and more reference information can be provided for subsequent medical research.