49 results about "Ablative surgery" patented technology

A high and low temperature composite ablation surgery system, relating to the technical field of cryotherapy, used to improve the safety and effectiveness of therapy, and comprising a main unit (100) and a cryogenic-thermal ablation probe (200) connected to the main unit (100). The main unit (100) comprises a cold working medium supply system (300), a hot working medium supply system (400), and a working medium distribution system (500). The working medium distribution system (500) can respectively control the cold working medium supply system (300) to deliver a cold working medium to the cryogenic-thermal ablation probe (200) and control the hot working medium supply system (400) to deliver a hot working medium to the cryogenic-thermal ablation probe (200). Therefore, after low-temperature therapy is completed, a therapy area can be quickly rewarmed, thereby providing a basis for improving the safety, economy and convenience of the surgery.

The invention discloses an endoscopic soft plasma radiofrequency ablation operation electrode tool bit, and relates to the technical field of minimally invasive medical equipment, the endoscopic soft plasma radiofrequency ablation operation electrode tool bit comprises an electrode assembly, an outer insulation sheath tube and a handle, the electrode assembly comprises an electrode holder, four mounting grooves are formed in the front end of the electrode holder in the circumferential direction of the electrode holder, and an electrode slice is fixedly mounted in each mounting groove; a conductive wire is fixedly arranged at the bottom of each electrode plate, a water outlet hole is formed in the center of the electrode holder in the length direction in a penetrating mode, a slidable cutting electrode is arranged in the water outlet hole, a water outlet gap is reserved between the cutting electrode and the electrode holder, and a ball head is arranged at the front end of the cutting electrode. The ball head is used for lifting tissue in the operation process, and a plurality of water inlets are formed in the rear end of the electrode holder in the circumferential direction. By means of the arranged electrode assembly, minimally invasive operation can be achieved through an endoscope channel under endoscope visibility, and vaporization, cutting, ablation shrinkage and hemostasis can be carried out on pathological tissue parts such as digestive tract mucosa, respiratory tract mucosa and polyp.

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

The invention provides an image assisting method and system, an electronic device, a storage medium and a program product, and belongs to the technical field of intelligent medicines.The method comprises the steps that an operation image is obtained based on a camera device on a hot steam ablation operation catheter; based on the parameters of the camera equipment, generating image coordinates and superposing the image coordinates on the surgical image; based on the image coordinates, determining a sheath tube moving distance of the hot steam ablation operation; under the condition that the movement distance of the sheathing canal reaches the target distance, a surgical operation prompt is initiated. According to the method, the camera device on the hot steam ablation operation catheter is used for obtaining the operation image, additional endoscope equipment is not needed, the sheath tube moving distance of the hot steam ablation operation is determined through the image coordinates overlapped on the operation image, and under the condition that the sheath tube moving distance reaches the target distance, the operation prompt is initiated; the defects that judgment of a doctor on the moving distance of the sheathing canal completely depends on visual estimation and operation hand feeling, standard operation is difficult to achieve, and the uniformity of the operation effect is affected are overcome.

Devices and methods can be used to treat heart conditions, hypertension, and other medical disorders. For example, devices and methods for treating atrial fibrillation by performing thoracic vein ablation procedures, including pulmonary vein myocardium ablation are described herein. In some embodiments, the ablation is performed in coordination with the delivery a pharmacological agent that can abate the formation of tissue stenosis or neointimal hyperplasia caused by the ablation.

The application discloses a robot special-shaped bending visual sheath and a surgical device, a sheath pipe (1) is arranged at one end of a transmission handle (8), a catheter channel is arranged in the sheath pipe (1); the transmission handle (8) comprises a first bevel gear (2) and a first bending mechanism; the first bevel gear (2) is sleeved on the sheath pipe (1) and is used for driving the sheath pipe (1) to rotate around a central axis, so that the catheter is rotated; the first bending mechanism comprises a second bevel gear (3), one end of the second bevel gear (3) is provided with a limiting groove used for connecting the first bevel gear (2), the limiting groove is used for limiting the radial movement of the second bevel gear (3), the second bevel gear (3) can rotate relative to the first bevel gear (2), a first traction wire connecting barrel is arranged on the inner wall of the second bevel gear (3) in a threaded mode, and the first traction wire connecting barrel is symmetrically provided with a first connecting hole and a second connecting hole at one end. The robot special-shaped bending visual sheath can realize precise bending, and the convenience and safety of ablation surgery are improved.

The present application provides a balloon, a balloon catheter, an ablation catheter, and a tubular ultrasonic focusing apparatus and method, which relate to the field of medical devices. An expanded state of the balloon comprises a first extension section, a lens section, and a second extension section. The lens section is disposed between the first extension section and the second extension section in an axial direction. The lens section comprises a converging structure made of an energy-permeable material, wherein the converging structure is configured to converge energy from the lens section to a target converging region. The balloon catheter comprises a balloon, an energy generator, a first axial fixing member, and a second axial fixing member. The energy generator is disposed in a hollow channel of the lens section, and the energy generator has a length corresponding to the lens section in an axial direction. When the balloon catheter provided in embodiments of the present application is applied to an ablation surgery, accurate focusing on a target ablation region can be achieved based on the lens section, and damage to surrounding tissues can be minimized while precisely targeting nerves in the target ablation region, thereby improving the effect of the ablation surgery. In addition, by means of a focusing / weak focusing region formed by an acoustic beam adjustment structure, the ablation depth and precision can be adjusted, and synchronous temperature rise in the target region is achieved. The balloon catheter has the advantages of uniform and consistent ablation effect and obvious distal boundary, and can achieve the precise ablation of renal artery branches and trunks, which ensures the thoroughness of ablation, reduces damage to surrounding normal tissues to the greatest extent, meets the clinical requirements of "ablation to completion", and improves the effectiveness and safety of treatment.

A system and method for enhancing visual accuracy comprising a computer processor and memory that executes software to capture the 3D map of the heart images, heart valves, and electro-anatomic data of the heart chambers, and project it into a 3D monitor instead of a 2D monitor, where in the displayed 3D map of the heart images, heart valves, heart chambers anatomy and catheters, is still rendered as a 2D map, which then can be visualized as a real 3D images and map by using / wearing special glasses (3D glasses) designed to view the 3D map of the heart chambers and catheters as 3D in real time.

A heat transfer device for circulating a heat transfer medium therein, and a method for protecting the esophagus and other areas of the body during ablation or thermogenic procedures performed nearby. The device typically includes an elongated outer shaft and an elongated inner shaft positioned within an outflow shaft. A distal end includes a fluid opening allowing fluid communication between the outer and inner shafts. A heat-insulating member, such as a sleeve, is positioned along a portion of the inner surface of the outer shaft, thereby defining the insulated and active heat transfer portions of the heat transfer device. The outer shaft may also include radiopaque or other imaging materials, enabling the device to be detected using imaging methods. During ablation procedures, cooling fluid circulates through the device to protect the esophagus from damage.

This invention relates to the field of medical technology and discloses a needle insertion guidance method, device, equipment, and storage medium. The needle insertion guidance method includes: importing medical image data; performing three-dimensional reconstruction based on the medical image data to obtain a three-dimensional model corresponding to the medical image data; planning the needle insertion path information of the electrode needle based on a virtual target location; generating a virtual reference plane where the limiting end of the electrode needle is located based on the needle insertion path information; obtaining the pose adjustment information of the robotic arm based on the needle insertion path information and the virtual reference plane; driving the robotic arm to adjust to the needle insertion pose based on the pose adjustment information, wherein the pinhole array plate at the end of the robotic arm corresponds to the virtual reference plane during the needle insertion pose; after the electrode needle is installed on the pinhole array plate and the limiting end abuts against the pinhole array plate, an ablation signal is transmitted to the electrode needle, causing the electrode needle to ablate the real target location. This invention reconstructs the needle insertion plane, enabling the robotic arm to accurately move to the needle insertion pose, improving the accuracy of needle insertion and the success rate of ablation surgery.

A timing system during an ablation procedure having a time to isolation includes an automated timer that receives a first time setting. The first time setting provides a maximum time that the ablation procedure can continue without reaching the time to isolation. A catheter system including the timing system can also include a control system that is configured to automatically stop the ablation procedure if the first time setting expires without reaching the time to isolation. The operator can input the first time setting via a graphical display of the catheter system. The automated timer can generate an expiration signal if the first time setting expires without reaching the time to isolation. The automated timer can further receive a second time setting from the operator that provides a maximum time that the ablation procedure can continue after reaching the time to isolation.

A balloon catheter that has one or more ultrasonic transducers to map a body cavity and to measure thicknesses of walls in the body cavity during an ablation procedure. The balloon of the catheter is deployable through a lumen into the body cavity with a flexible printed circuit board that has a first side attached to the exterior wall of the inflatable balloon and a second side opposite the first side. There is also provided an ultrasonic transducer mounted on the first side of the flexible printed circuit board and encapsulated between the exterior wall of the balloon and the flexible printed circuit board. A method of making or using the balloon catheter is also provided.

A method is provided. The method includes receiving, by an optimization engine, inputs from previous ablation procedures. The method also includes training, by the optimization engine, a machine learning algorithm of the optimization engine to learn scenarios for the previous ablation procedures. The method also includes generating, by the optimization engine, ablation indices for the scenarios.

The application relates to the technical field of medical systems, in particular to an AI-assisted precise ablation operation robot, and the technical scheme acquires tissue information on a track, fluctuation characteristics of organs and path track information through a data acquisition terminal, analyzes ablation risks and tissue risks caused by the fluctuation characteristics of the organs on the path track and the tolerance characteristics of the tissue information, and evaluates the track risks by comprehensively analyzing the ablation risks and the tissue risks, so that the ablation path is optimized through multi-modal data fusion and dynamic risk evaluation, the damage risk to surrounding healthy tissues is reduced while ensuring sufficient coverage of a lesion, and the core innovation lies in layered quantification of ablation risks and tissue risks caused by organ fluctuation, so that safer and more precise ablation treatment is realized.

The invention relates to the technical field of medical instruments, in particular to a pulse ablation device which comprises a handle, a first supporting rod, a second supporting rod, an ablation positive electrode, an ablation negative electrode and a wiring terminal. When a pulsed electric field ablation operation is carried out, the handle is used for being grabbed by an operator, the first supporting rod can generate plastic deformation, the ablation positive electrode and the ablation negative electrode can synchronously move and rotate so as to adapt to tissues to be ablated in different directions and different angles, and the flexibility of the operation is improved. The pulse power supply supplies power to the ablation positive electrode and the ablation negative electrode, and the ablation positive electrode and the ablation negative electrode are used for generating a pulse electric field so as to ablate abnormal tissue. The liquid conducting medium in the conducting medium storage tank serves as a liquid conducting load, so that an electric field formed by the ablation positive electrode and the ablation negative electrode is always stable, even if the ablation positive electrode and / or the ablation negative electrode are / is in poor contact with the tissue to be ablated, the intensity of the pulsed electric field can still be guaranteed, and the ablation operation failure is avoided.

The invention relates to the technical field of medical systems, in particular to an AI-assisted precise ablation surgical robot, and adopts the technical scheme that tissue information on a trajectory, fluctuation characteristics of organs and path trajectory information are acquired through a data acquisition terminal; ablation risks and tissue risks caused by fluctuation characteristics of visceral organs on a path trajectory and tolerance characteristics of tissue information are analyzed, and meanwhile, trajectory risks are evaluated by integrating analysis results of the ablation risks and the tissue risks, so that the method has the advantages that an ablation path is optimized through multi-modal data fusion and dynamic risk evaluation, and the risk assessment efficiency is improved. The risk of injury to surrounding healthy tissues is reduced while full coverage of a focus is ensured, and the core innovation of the system is to quantify ablation danger and tissue danger caused by organ fluctuation in a layered manner, so that safer and more accurate ablation treatment is realized.

This application provides a system for performing radiofrequency ablation surgery, relating to the field of medical device technology. The system includes a puncture surgery navigation and positioning subsystem for puncture positioning and navigation, and a radiofrequency ablation device electrically connected to the puncture surgery navigation and positioning subsystem. The puncture surgery navigation and positioning subsystem includes a positioning manipulator with a restraint at its front end. The radiofrequency ablation device includes a radiofrequency electrode needle and a radiofrequency generator electrically connected to each other. The puncture surgery navigation and positioning subsystem is configured to send a first trigger signal to the radiofrequency generator when it detects that the radiofrequency electrode needle, inserted through the restraint, has reached the puncture target point. This causes the radiofrequency generator to output radiofrequency current through the radiofrequency electrode needle based on the first trigger signal, acting on the ablation target. This technical solution improves the overall efficiency of radiofrequency ablation surgery.

The invention discloses an endoscopic single-electrode plasma radiofrequency ablation operation electrode tool bit, and belongs to the field of digestive and respiratory departments. The electrode tool bit comprises a flexible part, an electrode tip and a handle, one end of the flexible part is connected with the electrode tip, and the other end of the flexible part penetrates through a protective sleeve to be connected with the handle; a water injection connector is arranged on the handle and connected with a water injection hose, and a protective sleeve is arranged at the front end of the handle. A plurality of water outlet holes are formed in the side face of the electrode tip, the flexible part comprises a plastic-coated multi-strand steel wire, a spring tube and an outer sheath tube, and one end of the inner side of the electrode tip extends into the flexible part and is connected with the plastic-coated multi-strand steel wire through a connecting tube; a through groove is formed in the connecting pipe, and cavities are formed between the plastic-coated multi-strand steel wires and the inner wall of the flexible part and between the outer wall of the connecting pipe and the inner wall of the flexible part. The flexible supporting design of the spring tube and the outer sheath tube is combined, the multi-angle steering requirement of an endoscope is met, the endoscope can go deep into a bent cavity or a complex anatomical site, and mechanical damage of rigid instruments to the cavity is avoided.

The application relates to the technical field of medical devices, in particular to a pull ring type pulse ablation clamping device which comprises an operating handle, a sleeve, first ablation clamp pliers, a transmission assembly, second ablation clamp pliers and a driving ring. The operating handle is convenient for a surgeon to control the pull ring type pulse ablation clamping device. When the second ablation clamp pliers are close to the first ablation clamp pliers, a plurality of first ablation electrodes and a plurality of second ablation electrodes form an ablation electrode group, which is used to complete a pulse electric field ablation operation. When the pulse electric field ablation operation is performed, the surgeon can operate the operating handle and the driving ring with one hand, accurately adjust the distance between the second ablation clamp pliers and the first ablation clamp pliers by using the driving ring and the transmission assembly, avoid the distance between the ablation clamp pliers being too large or too small, and further avoid the ablation operation failure or tissue damage.

The present invention belongs to the field of medical image processing technology, specifically an intraoperative auxiliary navigation and positioning system for thyroid nodule thermal ablation surgery, comprising the following steps: Step S1, measuring key geometric size parameters of the nodule; Step S2, establishing an approximate three-dimensional model of the nodule; Step S3, aligning the approximate three-dimensional model with the ultrasound image; Step S4, completing the acquisition of nodule edge position data of the current ultrasound image; Step S5: calculating the nodule edge position data; Step S6, creating a high-precision three-dimensional digital model; Step S7, creating a three-dimensional intraoperative navigation and positioning system, and performing block ablation on the nodule. The present invention solves the technical problems of excessive and insufficient ablation that have always existed in thyroid nodule thermal ablation surgery. It optimizes the existing operating methods of thyroid nodule thermal ablation surgery, provides the surgeon with a powerful intraoperative navigation and positioning tool, and significantly improves the accuracy and success rate of thyroid nodule thermal ablation surgery.

The invention relates to an ablation surgical device. The ablation operation device comprises an obturator, an endoscope, a laser optical fiber and a sheathing canal, wherein the endoscope is provided with a through instrument channel; the laser optical fiber can penetrate through the instrument channel, the far end of the laser optical fiber penetrates out of the far end of the instrument channel and forms an ablation head used for ablation, and the near end of the laser optical fiber penetrates out of the near end of the instrument channel and is used for being connected to laser generating equipment; the sheathing canal is provided with a through main channel, and the main channel can selectively penetrate into the obturator or the endoscope; when the obturator is arranged in the main channel in a penetrating mode, the far end of the obturator penetrates out of the far end of the main channel and blocks the main channel. When the endoscope penetrates through the main channel, the far end of the endoscope penetrates out of the far end of the main channel, and the endoscope is used for obtaining an operation image. According to the ablation operation device, the time consumed for instrument assembly before an operation is reduced, meanwhile, the operation difficulty of the operation and the risk of distraction of the operation are reduced, and therefore the operation efficiency and safety are improved.

The utility model relates to the technical field of medical instruments, in particular to an annular mapping catheter which comprises a handle, a catheter body, an annular electrode assembly and a bending adjusting assembly, and the catheter body is connected with the handle; the annular electrode assembly is connected with the end, away from the handle, of the tube body and provided with a mapping electrode. The bending adjusting assembly comprises a first operation part arranged on the handle and a first pull wire connected with the first operation part, the first pull wire extends in the axial direction of the tube body, and the end, away from the first operation part, of the first pull wire is connected with the annular electrode assembly; wherein the first operation part can drive the first pull wire to move in the axial direction of the catheter body so that the first pull wire can pull the annular electrode assembly to deflect towards the first pull wire, the annular mapping catheter can adjust the bending of the annular electrode assembly, and then the annular mapping catheter can be matched with an ablation operation to conduct accurate intracardiac potential mapping on the ablation annular face of a pulmonary vein opening.

The present application relates to the field of electrophysiological ablation, in particular to a deformable ablation catheter, comprising a catheter tube and a sheath tube, and further comprising an electrode and a head end; the head end is arranged at the distal end of the catheter tube, a plurality of strip-shaped electrode arms are connected between the head end and the distal end of the catheter tube, a plurality of electrodes are arranged on the electrode arms at intervals, the positions of the electrodes on each electrode arm are consistent, and a plurality of electrodes are arranged on the head end; the head end can move along the axial direction of the catheter tube to approach the distal end of the catheter tube, and the electrode arms expand outward accordingly; the head end can move along the axial direction of the catheter tube to move away from the distal end of the catheter tube, and the electrode arms contract and gather accordingly; the sheath tube is arranged outside the catheter tube, the sheath tube can slide along the catheter tube, and the sheath tube can wrap the electrode arms in the second mode. The catheter mode can be switched to a point, line or multi-pole mode according to the operation requirements, a separate catheter does not need to be replaced, the ablation operation time and the cost of the patient are saved, and good effects are achieved.

The invention discloses a liver cancer ablation operation evaluation method, device, equipment and medium, and relates to the technical field of medical assistance, the method comprises the following steps: establishing a mechanical correlation between a temperature field and a deformation field through thermoelastic coupling learning, predicting an ablation area, calculating an ablation boundary based on a three-dimensional space relation, and mapping the ablation boundary to a two-dimensional plane; and finally, a curative effect evaluation result is visually presented in a color grading manner. The spatial orientation information of the directional ablation boundary evaluation index is visually associated with the ablation safety boundary through Movit projection, and decision support for rapidly identifying an insufficient ablation area and planning supplementary treatment is provided for clinic.

The invention discloses a personalized heart model atrial wall thickness measuring method based on MRI (Magnetic Resonance Imaging), and belongs to the field of cardiac medicine. According to the method, a personalized heart model is established by using an MRI image, an atrial intima and an atrial adventitia are segmented, a Laplace-Dirichlet parameterization method is utilized to distribute transmural values for space points of an atrial wall, a myocardial is divided into a plurality of myocardial layers based on the transmural values, and then full-layer mapping is realized through cone space search, new mapping plane generation and layer thickness accumulation. Finally, the atrial wall thickness is obtained through low-pass filtering abnormal value elimination and inverse distance weighted interpolation processing, the measurement deviation generated by myocardial abnormal deformation caused by diseases is solved, and a new basis is provided for formulating a personalized atrial fibrillation ablation operation.

To provide a system for improvement in efficiency of IRE ablation.SOLUTION: A system includes first and second circuits and one or more devices. The first circuit is configured to generate a stress signal for reducing an impedance of tissue of an organ. The second circuit is configured to generate an irreversible electroporation (IRE) signal for producing a lesion in the tissue. The one or more devices are configured to apply, to the tissue, the stress signal at a first time interval, and the IRE signal at a second time interval subsequent to the first time interval.SELECTED DRAWING: Figure 1

The invention relates to the technical field of medical assistance, and discloses a thyroid ablation operation isolating and cooling device which comprises a three-way valve, an injection assembly is arranged on the right side of the three-way valve, an infusion tube is in threaded connection with the side, away from the injection assembly, of the three-way valve, and an infusion needle is detachably connected to the end, away from the three-way valve, of the infusion tube. The rear end of the three-way valve is detachably connected with a dual-purpose pipeline assembly, the middle of the top end of the three-way valve is rotationally connected with a rotating shaft, the top end of the rotating shaft is fixedly connected with a connecting block, a tooth ring groove is formed in the top end of the connecting block, a spline hole is formed in the middle of the top end of the connecting block, and an arc groove is formed in the top end of the connecting block. According to the invention, through self-locking of the three-way valve and self-destruction of the T-shaped rotating handle, secondary utilization of the three-way valve is prevented; meanwhile, the liquid medicine flows into the infusion tube through the connecting tube, the flow rate changes at the three-way valve connected with the infusion tube, and bubbles are compressed and eliminated under high pressure and are prevented from entering the body of a patient to generate aeroembolism.

The present application 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 pipe distance field construction module, a thermal field prediction module, a respiratory deformation prediction module, a multi-scale feature fusion module, a behavior preference reward module, a composite reward function module and a decision output module. The present application solves the clinical pain points such as respiratory interference, dangerous area avoidance and individual adaptation, improves the precision and safety of liver cancer thermal ablation surgery, reduces normal tissue damage and complications, provides intelligent decision support for interventional therapy, and promotes the upgrading of liver cancer minimally invasive treatment to precision and intelligence.

The invention relates to the technical field of cardiac ablation, in particular to an irreversible electroporation ablation system with OCT (optical coherence tomography), which comprises an electrophysiology catheter, the electrophysiology catheter comprises a catheter head end, the catheter head end is provided with an electrode, a magnetic positioning sensor, a pressure sensor and an OCT sensor, and the OCT sensor is used for emitting a light beam to irradiate an ablation position and collecting scattered light from tissues; the ablation equipment is electrically connected with the electrophysiology catheter; the three-dimensional mapping system is electrically connected with the electrophysiology catheter and the ablation device, the three-dimensional mapping system comprises a magnetic positioning module, a pressure monitoring module and an OCT processing module, the OCT processing module is used for optical coherence tomography, and the three-dimensional mapping system is used for displaying electrophysiology catheter position information, catheter head end pressure and OCT imaging information. According to the invention, a one-dimensional depth image, a two-dimensional section image and a three-dimensional image can be generated in real time, an ablation position is scanned through an OCT technology, real-time image display can be obtained, and a doctor performing a pulse ablation operation is helped to timely and accurately judge an ablation result.