31 results about "Ablative surgery" patented technology

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 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.

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 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.

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 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.

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 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 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 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.

A mapping engine is provided. The mapping engine operates to generate on a display an initial visualization of an anatomical structure during an ablation procedure and a catheter at an average position as a silhouette below a surface within the initial visualization. The mapping engine operates to deform an area of the surface of the initial visualization to the average position to generate a temporary visualization exposing at least a portion of the catheter and to determine whether to maintain the temporary visualization based on an ablation event of the ablation procedure.

The invention relates to the technical field of medical monitoring, in particular to a hepatobiliary surgery nuclear magnetism guided ablation anesthesia depth real-time regulation and control system which comprises a signal synchronous acquisition module, an interval dislocation judgment module, an energy compensation modeling module, a continuity reconstruction module and an anesthesia criterion generation module. According to the method, the electroencephalogram signal and the nuclear magnetic gradient switching time sequence are synchronously collected, the interference occurrence moment is accurately positioned, the interference section and the normal physiological signal are separated and corrected, and it is ensured that the electroencephalogram signal can accurately reflect the real anesthesia depth. And through energy compensation and time continuity restoration, the phenomenon of signal instability caused by interference is eliminated, so that the change of anesthesia depth parameters is more continuous and smoother. The real-time performance and the accuracy of anesthetic regulation and control are further improved, the dependence of artificial experience judgment is reduced, the consistency and the safety of anesthesia control are improved, and the stable anesthesia state of a patient in an ablation operation is guaranteed.

The present application relates to a kind of high-low temperature composite ablation surgical system, it is related to cryogenic therapy technical field, for improving the safety and effectiveness of treatment.The present application is a kind of high-low temperature composite ablation surgical system, including host unit and the cold and hot ablation needle connected with the host unit, the host unit includes cold working medium supply system, hot working medium supply system and working medium distribution system, working medium distribution system can respectively control cold working medium supply system to cold and hot ablation needle transport cold working medium, and control hot working medium supply system to cold and hot ablation needle transport hot working medium, so it can be quickly rewarming to treatment area after completing cryogenic therapy, to provide foundation for the promotion of surgical safety, economy and convenience.

An intra-cardiac mapping system is based on locating the ports through which blood flows in or out the heart chambers. For many procedures, such as ablation to cure atrial fibrillation, locating the pulmonary veins and the mitral valve accurately allows to perform a Maze procedure. The location of the ports and valves is based on using the convective cooling effect of the blood flow. The mapping can be performed by a catheter-deployed expandable net or a scanning catheter. The same net or catheter can also perform the ablation procedure.

The application discloses an endoscopic monopole plasma radio frequency ablation operation electrode knife head and belongs to the field of digestive and respiratory departments. The electrode knife head comprises a flexible part, an electrode head and a handle, one end of the flexible part is connected with the electrode head, the other end of the flexible part is connected with the handle through a protection sleeve, a water injection interface is arranged on the handle, the water injection interface is connected with a water injection hose, the front end of the handle is provided with the protection sleeve, a plurality of water outlet holes are arranged on the side surface of the electrode head, the flexible part comprises a plastic-coated multi-strand steel wire, a spring tube and an outer sheath tube, one end of the inner side of the electrode head extends to the inside of the flexible part and is connected with the plastic-coated multi-strand steel wire through a connecting pipe, a through groove is arranged on the connecting pipe, and cavities are formed between the outer walls of the plastic-coated multi-strand steel wire and the connecting pipe and the inner wall of the flexible part. The flexible support design of the spring tube and the outer sheath tube is combined, the endoscopic multi-angle steering requirement is adapted, the electrode knife head can be deeply inserted into a curved cavity or a complex anatomical site, and mechanical damage of a rigid instrument to the cavity can be avoided.

This invention relates to a high-low temperature combined ablation surgical system, specifically in the field of cryotherapy technology, aimed at improving the safety and effectiveness of treatment. The high-low temperature combined ablation surgical system of this invention includes a main unit, which includes a cryogenic supply system. The cryogenic supply system includes a cryogenic pressure control system, which includes a cold container for delivering cryogenic fluid to the cryoablation needle. A pressurization pipeline is connected to the cold container, with both ends of the pipeline connected to the cold container to form a closed loop. The pressurization pipeline is used to self-pressurize the cryogenic fluid in the cold container.

The invention relates to the technical field of machine vision, in particular to a polycystic kidney radiofrequency ablation surgical treatment planning system based on ultrasonic images, which analyzes the distribution condition of time sequence hue angle values of pixel points in all continuous frames of ultrasonic images through a hue fluctuation intensity acquisition module to obtain the hue fluctuation intensity of the pixel points; the region division module is used for dividing a cyst region, a coverage region and a blood vessel region of the ultrasonic image based on the hue fluctuation intensity; the covered blood vessel recognition module is used for recognizing covered blood vessel regions in the cyst region and the coverage region according to the hue fluctuation intensity of the pixel points in the cyst region and the coverage region and the number of the pixel points in the blood vessel region; and the puncture path planning module plans a puncture path. According to the system, by judging the confidence degree that each pixel point is the blood vessel region among the multiple frames of ultrasonic images, the recognition accuracy of the blood vessel region, especially the blood vessel region interfered by artifacts, is improved, and then the reliability of puncture path planning is improved.

An ultrasound-based surgical system is provided for image-guided and mechanical ablation for minimally invasive surgery, particularly surgery requiring removal of tissue. The system includes a device having an elongated body portion supporting a therapeutic ultrasound transducer assembly including a piezoelectric composite material and an annular electrode array. The electrodes may be driven to generate focused ultrasound pulses for ablating tissue via cavitation. The device may be controlled to scan focused ultrasound pulses within an elongated axial region for performing linear ablation. An electrical isolation layer is formed over the ring electrode array to prevent arcing within the backing when a high voltage electrical pulse is delivered to the ring electrode array to generate an ultrasonic pulse for cavitation. The elongated body may support an imaging transducer assembly within a central aperture of the therapeutic ultrasound transducer assembly to facilitate image guidance during an ablation procedure.

The present application relates to the technical field of medical instruments and provides an ultrasound-guided steam ablation surgical device and system. A device body comprises a handle and a catheter; an ultrasound-guided steam ablation assembly comprises an ultrasonic probe and a steam delivery needle, and the ultrasonic probe and the steam delivery needle are both movably provided in the catheter. The ultrasonic probe and the steam delivery needle are each provided with a position determination assembly, and the position determination assemblies are configured to determine position information of the ultrasonic probe and the steam delivery needle. A control assembly is connected to the ultrasonic probe, the steam delivery needle, and the position detection assemblies. The control assembly is configured to determine, on the basis of the position information of the ultrasonic probe and the steam delivery needle, an included angle between the ultrasonic probe and the steam delivery needle, and plan a puncture direction on the basis of the included angle and real-time ultrasonic imaging of a lesion region. When the steam delivery needle of the present application performs a puncture action, the error of the planned puncture direction is adjusted in real time according to position signals fed back by the position detection assemblies, and then ablation treatment is performed, such that the treatment deviation is small.

A method comprising registering multiple locations of ablated sites on a human organ. The method includes manipulating a catheter having multiple electrodes in close proximity to the organ, the electrodes configured to further ablate selected sites on the organ. The method further includes rendering on a display organ icons indicating the locations of the organ and multiple ablated sites, and catheter icons indicating the multiple electrodes, and providing on the display a display of the quality of alignment between the multiple electrodes and the locations of the multiple ablated sites.

Techniques for selecting and / or treating patients with heart failure, such as heart failure with preserved ejection fraction (HFpEF) are provided. Diagnostic tests are used to determine whether a patient is preload sensitive or preload dependent based on metrics such as delta pulse pressure (dPP) and delta heart rate (dHR). Patients may be selected for treatment based on such a determination.

The present invention relates to a system and method for adaptive multivariate control for performing a radiofrequency (RF) ablation procedure with a power delivery device. The system includes a power source for supplying energy to a patient's body; one or more power delivery devices; two or more sensors for measuring at least two factors related to an ablation procedure, respectively; and at least one processor.The method includes the steps of: measuring at least two factors related to an ablation procedure; determining a first operating threshold based, at least in part, on a first factor; controlling a power delivery device based on the first operating threshold to create a lesion at the target site within the patient; determining a second operating threshold based, at least in part, on a second factor; switching control of the power delivery device from the first factor to the second factor; and controlling the power delivery device based on the second operating threshold to create a lesion at the target site within the patient. The present invention also relates to an RF probe configured for use with the adaptive multivariate control system and method for performing RF ablation procedures.