268 results about "Ablation Therapy" patented technology

A novel catheter is disclosed comprising an electrode array that is capable of switching between a sensing configuration for sensing electrical signals of biological tissue and an ablation configuration for delivery of ablation energy at a region of interest. Irrigation ports are interlaced within the electrode array to vent irrigant during an ablation procedure to; prevent excessive heating, charring of tissue, coagulation of blood, and allow for efficient delivery of ablation therapy for maximum therapy efficacy. The novel catheter includes a plurality of splines with linear portions wherein the electrodes of the electrode array are disposed. The splines are connected by connectors which include one or more bends capable of storing potential energy when the bends are elastically deformed, enabling collapse and expansion of the catheter in a sheath. Software logic associated with this catheter analyzes sensing signals to diagnose critical regions of the biological rhythm disorder, and enables directional guidance to move the catheter to critical regions for therapy.

A novel catheter is disclosed comprising an electrode array that is capable of switching between a sensing configuration for sensing electrical signals of biological tissue and an ablation configuration for delivery of ablation energy at a region of interest. Irrigation ports are interlaced within the electrode array to vent irrigant during an ablation procedure to; prevent excessive heating, charring of tissue, coagulation of blood, and allow for efficient delivery of ablation therapy for maximum therapy efficacy. The novel catheter includes a plurality of splines with linear portions wherein the electrodes of the electrode array are disposed. The splines are connected by connectors which include one or more bends capable of storing potential energy when the bends are elastically deformed, enabling collapse and expansion of the catheter in a sheath. Software logic associated with this catheter analyzes sensing signals to diagnose critical regions of the biological rhythm disorder, and enables directional guidance to move the catheter to critical regions for therapy.

Systems, devices, and methods described herein relate to catheter devices for therapy delivery. In some embodiments, a catheter device includes an expandable electrode and a needle, where the needle can be advanced distal to a distal end of the expandable electrode and inserted into a tissue site. The expandable electrode and the distal end of the needle can be configured to deliver electroporation to the tissue site.

The invention relates to the technical field of focus positioning, in particular to a hysteromyoma focus accurate positioning method combining image analysis and data fusion, which comprises the following steps: acquiring multi-modal uterus image data, and carrying out artifact suppression and spatial registration on an original image; performing three-dimensional reconstruction on the preprocessed multi-modal image data set to generate a three-dimensional uterus model comprising anatomical structure features; lesion feature segmentation is carried out in the three-dimensional uterus model, and morphological parameters and textural features of a myoma lesion are extracted; carrying out hemodynamic analysis to obtain blood perfusion parameters and blood vessel distribution characteristics of the focus area; the blood perfusion parameters and the blood vessel distribution characteristics are fused, the three-dimensional uterus model is combined, and a focus biomechanical characteristic distribution diagram is constructed; and generating a real-time navigation path according to the biomechanical characteristic distribution diagram, and outputting a positioning report. According to the method, personalized ablation energy suggestions are made, the ablation treatment efficiency and success rate are effectively improved, the ablation energy is dynamically adjusted, and the treatment efficiency and safety are ensured.

A system and method for assessing effective delivery of ablation therapy to a tissue in a body is provided. A three-dimensional anatomical map of the tissue is generated and displayed with the map defining a corresponding volume. An index is generated corresponding to a location within the volume with the index indicative of a state of ablation therapy at the location. The index may be derived from one or more factors such as the duration an ablation electrode is present at the location, the amount of energy provided, the degree of electrical coupling between an ablation electrode and the tissue at the location and temperature. A visual characteristic (e.g., color intensity) of a portion of the anatomical map corresponding to the location is then altered responsive to the index.

The invention relates to an ablation assembly and a radiofrequency ablation catheter, a deformation frame body has a contraction state and an unfolding state, an ablation electrode group comprises a plurality of electrode elements distributed on the surface of the deformation frame body, and in the unfolding state of the deformation frame body, the ablation electrode group comprises a plurality of electrode elements; the plurality of electrode elements can be respectively constructed into a plurality of annular track unit groups and a plurality of linear track unit groups in the axial direction and the circumferential direction of the deformation frame body, the annular track unit groups surround the deformation frame body in the circumferential direction, and the linear track unit groups are linearly distributed in the axial direction of the deformation frame body. A plurality of electrode elements in the ablation electrode set form a plurality of annular track unit sets and a plurality of linear track unit sets in the axial direction and the circumferential direction of the deformation frame body, the ablation treatment range in the blood vessel can be greatly expanded along with unfolding of the deformation frame body, operation such as axial movement and circumferential rotation is not needed any more, and the ablation efficiency is improved. Therefore, large-range treatment can be achieved, the treatment efficiency can be effectively improved, the operation difficulty is reduced, and development of the ablation treatment technology is facilitated.

The invention provides a radiofrequency ablation system based on multi-source data, and relates to the technical field of medical instruments, and the system comprises an ablation area judgment device which is used for judging whether an operation target meets the ablation requirement or not according to a real-time ultrasonic image of the operation target; the data processing device is used for determining an ablation strategy of an ablation area of the operation target according to the real-time electrocardiogram data and the real-time vital sign data of the operation target in combination with a preset radiofrequency ablation working mode when the operation target meets the ablation requirement; the radio frequency energy generating device is used for generating corresponding radio frequency energy according to the ablation strategy; and the ablation device is used for performing ablation operation according to the radio frequency energy action. By integrating multi-source data such as real-time ultrasonic images, electrocardiogram monitoring and vital sign monitoring, accurate judgment of ablation requirements, dynamic adjustment of ablation strategies and accurate output of ablation energy are achieved, and the safety, accuracy and curative effect of cardiac radiofrequency ablation treatment are improved.

The invention relates to an electric field ablation device for digestive tracts, an ablation system and application, the electric field ablation device comprises a slender carrier and an expandable part carried by the slender carrier, the expandable part comprises a balloon and an electrode assembly, and a plurality of electrodes of the electrode assembly are arranged on the surface of the balloon. The balloon cavity of the balloon is filled with liquid, so that the balloon can be expanded, the expandable assembly has a first state with the large transverse size, the electrodes on the periphery of the outer side of the balloon can be tightly attached to tissue of the alimentary canal, and ablation treatment on the alimentary canal is achieved; when the liquid in the balloon cavity is discharged, the balloon can be shrunk, so that the expandable assembly has a second state with a smaller transverse size and can conveniently enter a human body or retreat from the human body, thereby facilitating the surgical operation of a doctor and relieving the pain of a patient; the sacculus is soft in texture and can be more tightly attached to the tissue of the digestive tract of the human body, and the accurate ablation treatment effect is achieved.

The utility model relates to the technical field of medical instruments, and discloses a medical fixator and an ablation treatment device.The medical fixator comprises a bottom supporting part and an instrument fixing part, the head end of the instrument fixing part is movably connected with the bottom supporting part, multi-angle adjustment can be achieved, and different operation requirements can be met; the tail end of the instrument fixing part is used for connecting a corresponding medical instrument; the upper area of the bottom supporting part is used for supporting a patient, for example, the bottom supporting part is fixed to a preset position such as a CBCT sickbed during preoperative preparation or during an operation, so that relative fixation of the whole device is achieved, and corresponding medical instruments can be moved to the focus position of the patient under operation of medical staff for treatment or pretreatment; the medical fixator is simple in structure and flexible to operate, the problem that a traditional fixing mode is poor in stability is effectively solved, and operation efficiency and safety are remarkably improved.

The invention relates to a cryoablation system, a cryoablation catheter and a control method of the cryoablation catheter. The cryoablation catheter comprises a slender body, an expandable assembly and a temperature measuring assembly, the expandable assembly is arranged at the far end of the slender body, and the expandable assembly can block a vein mouth when in an expanded structure; the slender body comprises an outer tube and a main body tube, the outer tube and the main body tube define an airflow channel, the main body tube is provided with a first conveying channel, the airflow channel is communicated with the expandable assembly, and the first conveying channel penetrates through the main body tube and is used for conveying mild liquid to veins; the temperature measuring assembly is arranged on the expandable assembly and can detect the temperature of the vein mouth so as to judge the effectiveness of plugging of the expandable assembly. Thus, the temperature measuring assembly on the expandable assembly is used for measuring temperature changes to judge the blocking state, the usage amount of contrast agents and X-rays can be reduced, the specific leakage position can be judged, ablation treatment can be conveniently carried out in the later period, and the treatment effect is guaranteed.

An apparatus and methods for performing ablation of myocardial tissues are disclosed. The apparatus includes a plurality of ablation electrode configurations to which nanosecond pulsed electric fields are applied. The methods relate to therapies to treat cardiac arrhythmias, such as, atrial fibrillation and scar-related ventricular tachycardia, amongst others. The affected myocardial tissues are ablated creating a plurality of lesions enabled by the nanosecond pulsed electric fields applied to either penetrating electrodes, endo-endo electrodes, or endo-epi electrodes. Different electrophysiological tests are performed to assess the application of nanosecond pulsed electric field ablation to specific desired tissue location within the heart. Test results show the potential to overcome limitations of current ablation therapies, thereby providing patients and doctors a superior treatment for cardiac arrhythmias.

The invention discloses a cyst treatment system which comprises a medical host, the medical host comprises an air pump and a peristaltic pump, liquid in an infusion bag is input into an infusion tube arranged at the front end of a handle shell through a pipeline and the peristaltic pump, and the negative pressure end of the air pump is communicated with a suction tube arranged at the front end of the handle shell through a pipeline and a waste liquid collecting barrel. A screw rod is arranged in the suction pipe and is driven by a transmission claw, a driving claw and a driving motor which are arranged in the handle shell, the infusion pipe and the suction pipe are welded together, and the infusion pipe or the suction pipe is connected with the positive electrode of a radio frequency module in the medical host through a cable and a coagulation cutting connector on the host shell. The negative electrode of the radio frequency module is connected with the negative plate through a cable and a plate connector on the host outer box. Positive and negative suction pressure and electrode radio frequency energy are provided by the medical host, cysts are treated by perfusion suction and radio frequency ablation instead of being stripped during treatment, and wounds caused by stripping are avoided.

The invention discloses an ablation therapy auxiliary device for the interventional department, and relates to the technical field of medical instruments, the ablation therapy auxiliary device comprises two sets of multi-axis arms, a multi-layer annular gradient magnetic field generator is arranged at the tail end of the other set of multi-axis arms, and a spherical magnetorheological fluid cavity, a laminated electroactive polymer film and a flexible supporting layer structure are adopted through an ablation needle assembly; according to the composite driving mode combining the magnetorheological fluid and the pneumatic micro push rod, the viscosity of the magnetorheological fluid can be rapidly changed under the action of a magnetic field, large-angle flexible rotation of the joint is achieved, the electroactive polymer film can be accurately and finely adjusted at a small angle, and the pneumatic micro push rod can push away surrounding tissues and is matched with the multi-layer annular gradient magnetic field generator at the tail end to achieve large-angle flexible rotation of the joint. The multi-dimensional precise positioning of the ablation needle assembly in the space is achieved, it is ensured that the ablation electrode can be precisely aligned with a tiny focus or a focus in a special position, the flexibility and precision of operation are greatly improved, damage to surrounding normal tissue is effectively avoided, the operation safety is improved, and the ablation success rate of the focus is increased.

The invention discloses a pulse ablation device and a discharge control method of a pulse ablation catheter, the pulse ablation device comprises the pulse ablation catheter and a controller, the pulse ablation catheter comprises a plurality of discharge units, the discharge units are used for issuing a pulse electric field, and the discharge units are divided into a plurality of discharge sequences; each discharge sequence comprises at least two discharge units; the controller is connected with the pulse ablation catheter and used for controlling the multiple discharge sequences in the pulse ablation catheter to sequentially emit the pulse electric fields according to a preset sequence. The pulse electric fields are sequentially distributed according to the preset sequence by controlling the discharge sequence, so that the discharge unit distributes the pulse electric fields in batches for ablation treatment instead of simultaneous discharge, stimulation to muscles of a patient is reduced, and a pulse electric field ablation operation can be performed by adopting local anesthesia.

Systems, devices, and methods described herein relate to catheter devices for therapy delivery. In some embodiments, a catheter device includes an expandable electrode and a needle, where the needle can be advanced distal to a distal end of the expandable electrode and inserted into a tissue site. The expandable electrode and the distal end of the needle can be configured to deliver electroporation to the tissue site.

Medical devices, systems, and methods for therapeutic vapor ablation treatment of airway-related diseases are disclosed. An exemplary ablation catheter includes an elongate catheter shaft having a proximal end region and a distal end region and including a lumen extending between the proximal end region and the distal end region; an expandable basket positioned adjacent a distal end region of the elongate catheter shaft and in fluid communication with the lumen, the expandable basket configured to move between an unexpanded configuration and an expanded configuration; and a nozzle positioned in a longitudinal direction along the expandable basket and configured to eject vapor to ablate tissue proximate thereto.

The invention relates to the technical field of thermal ablation, and particularly discloses a bone tumor thermal ablation treatment control device combined with machine learning, which is characterized in that image definition is enhanced by performing filtering noise reduction and contrast enhancement processing on image data in a thermal ablation operation, and an image processing technology based on deep learning is further introduced. Characteristic dominant modeling based on combined guidance of space-semantic double-domain context information is performed on enhanced image data in thermal ablation, so that key features of a tumor area and peripheral tissues thereof are highlighted, and interference of non-key information is inhibited; therefore, ablation boundary segmentation in the bone tumor thermal ablation treatment process is realized on the basis. By means of the mode, the feature expression distinction degree and ablation boundary segmentation accuracy of image data in the thermal ablation operation can be remarkably improved, efficient thermal ablation treatment control can be achieved, and powerful tool support is provided for minimally invasive treatment of bone tumors.

The invention relates to a planning device (2) for positioning treatment applicators (8). The device (2) comprises a providing unit (4) configured for providing a distance r to be considered between applicator entry points (10) and a processor (6). It has been found that when utilizing treatment applicators, in particular ablation treatment applicators, placing two or more applicators closely together increases the risk of ablating and damaging more tissue than required for the therapy success. By configuring the processor (6) to inactivating all entry points within a distance r from a currently selected entry point such that these entry points are unavailable to further optimization iterations, and then conducting a further optimization iteration, an optimal applicator configuration can be provided that is effective with regard to the therapy success while the risk of ablating more tissue than required is reduced.

The utility model provides an endoscope puncture needle with biopsy and ablation functions. The endoscope puncture needle comprises an operation main body, a biopsy needle, a catheter mechanism and a forceps channel fixer, the operation body comprises a limiting handle and a pushing rod, the limiting handle is provided with a first end and a second end which are opposite, one end of the pushing rod movably penetrates through the limiting handle through the first end, and the other end of the pushing rod is provided with a connecting part used for being externally connected with a negative pressure device or an electrode device; a needle inserting depth limiting mechanism matched with the push rod is arranged in the limiting handle, one end of the catheter mechanism is arranged in the limiting handle in a penetrating mode through a second end and communicated with the push rod, and the other end of the catheter mechanism is communicated with the biopsy needle; the forceps channel fixator is movably arranged on the catheter mechanism in a sleeving mode and used for fixing the catheter mechanism and a forceps channel opening of the endoscope. According to the utility model, the problem that the risk of postoperative complications of a patient is increased due to the increase of the number of times of puncture because the needle biopsy procedure and the ablation procedure need to be operated separately and punctured for multiple times in the existing medical procedure needing needle biopsy and interventional ablation treatment can be solved.

Electromagnetic sensing for use with ablation treatment devices are described. Generally, an elongate body may be configured for introduction into an esophageal lumen and a distal portion may be pivotably coupled to the elongate body such that actuation of the distal portion reconfigures the distal portion within a plane relative to the elongate body. The elongate body may define one or more openings along the distal portion and which are in fluid communication with a fluid port. A sensor may also be positioned near or at a distal end of the distal portion where the sensor is configured to communicate with an electromagnetic navigational system to determine a distance to an ablation catheter.

The invention relates to an electric field ablation device and ablation system for the digestive tract and application, the electric field ablation device comprises a first rod, a second rod, a supporting piece and an electrode assembly, the second rod is slidably arranged on the first rod in a sleeving mode, and the first far end portion of the first rod is exposed; the supporting piece is fixedly connected between the first far-end portion and the second far-end portion of the second rod, a plurality of electrodes on the electrode assembly are arranged on the supporting piece, the supporting piece can be switched between the expansion state and the contraction state by driving the first rod and the second rod to slide relatively, the structure is simple, and operation is convenient. When the supporting piece is in the expanded state, the electrode is exposed out of the surface, away from the first rod, of the supporting piece and can be tightly attached to the tissue of the digestive tract, and therefore accurate ablation treatment can be achieved for treating diabetes or obesity.

Medical system for supporting ablation therapy in an ablation area, comprising: at least one nail-shaped antenna with a conductive element movable along a longitudinal axis, configured to emit electromagnetic radiation in microwave or radio frequencies; a temperature measuring unit configured to measure temperature and output corresponding signals; a simulation unit configured to provide a simulation of the temperature distribution in the ablation area based on the location of the at least one antenna and the emitted electromagnetic radiation, and using a heat propagation model;a configuration unit which is configured to determine an operating configuration of the at least one antenna based on the signals from the temperature measuring unit and the provided simulation of the temperature distribution, wherein the determined operating configuration includes at least one movement of the conductive element along the longitudinal axis of the nail-shaped antenna; and an output unit which is configured to output a configuration signal corresponding to the determined operating configuration.

The ablation needle at least comprises a needle tube, a first cavity and a second cavity which are independent of each other are arranged in the needle tube, a first pipeline is arranged in the first cavity, a second pipeline is arranged in the second cavity, and the first pipeline and the second pipeline extend to the outside of the needle tube from the near end of the needle tube; the near end of the needle body is connected with the far end of the needle tube, a hollow pipeline is arranged in the needle body, a first channel is formed between the needle body and the pipeline, a second channel is arranged in the pipeline, the far end of the first channel is communicated with the far end of the second channel, the near end of the first channel is communicated with the first cavity, and the far end of the second channel is communicated with the second cavity. The near end of the second channel is communicated with the second cavity, and a water outlet hole is formed in the needle body; the needle head is connected to the far end of the needle body. According to the utility model, two channels are arranged, one channel is used for injecting one kind of liquid, and the other channel is used for injecting the other kind of liquid or sucking gas generated in the ablation treatment process.

1. Name of the product in this design: Disposable steep pulse therapy ablation needle (three needles). 2. Purpose of this design: A disposable steep pulse therapy ablation needle (three needles) for the ablation treatment of tumors. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

Systems, devices, and methods for delivering pulsed electric field ablation energy to endocardial tissue are disclosed, wherein the system includes a pulsed waveform signal generator for medical ablation therapy and an endocardial ablation device including at least one electrode for delivering ablation pulses to tissue. The signal generator can deliver voltage pulses to the ablation device in the form of a pulsed waveform. The system can include a cardiac stimulator for generating a pacing signal and for delivering a pulsed waveform in sequence in synchronization with the pacing signal.

The invention relates to a method for determining ablation parameters for ablation therapy, comprising:-receiving (100) sensor data acquired by at least two sensors (10) spatially arranged along a shaft (5) of an ablation probe (2), each sensor having a different sensor position (11, T1, T2, T3, T4), the sensor data for the at least one measured parameter comprises two measured values obtained at different sensor positions (11, T1, T2, T3, T4); -determining (200) an ablation parameter on the basis of the sensor data and / or measured values of the same measurement parameter at different sensor locations (11, T1, T2, T3, T4); -providing (300) the determined ablation parameters.

The invention relates to the technical field of medical equipment, and provides a prostate steam ablation control method and device and a storage medium, and the control method comprises the steps: controlling a water supply part to supply sterile water to a steam generation pipe according to a first water pushing speed, and controlling a heating assembly to heat the steam generation pipe at a first power, sterile water in the steam generation pipe is preheated to a target temperature; controlling the water supply piece to supply sterile water to the steam generation pipe according to a second water pushing speed, controlling the heating assembly to heat the steam generation pipe at a second power, heating the sterile water at the target temperature into ablation steam, and applying the ablation steam to a target ablation area by the steam ablation needle; and controlling the water supply piece to supply sterile water to the steam generation pipe according to the third water pushing speed, and controlling the heating assembly to heat the steam generation pipe at the first power. During steam ablation treatment, the stability of output ablation steam heat can be ensured, steam is prevented from burning a human body, steam holes of the steam ablation needle are prevented from being blocked, and the steam ablation treatment effect is ensured.

Described herein are systems and methods for performing and determining the effectiveness of a denervation procedure. Such systems include an excitation source, a controller, and a catheter including elements for delivering a first ablation therapy from a first longitudinal location along a biological lumen and for delivering a second ablation therapy from a second longitudinal location longitudinally spaced from the first longitudinal location. A sensing subsystem of the system senses neural activity from a third longitudinal location along the biological lumen and determines the effectiveness of at least one of the first or second ablation therapies.

One or more example embodiments relates to a method for determining an ablation parameter for an ablation treatment, the method comprising receiving sensor data acquired by at least two sensors, the at least two sensors being spatially arranged along a shaft of an ablation probe, each of the at least two sensors having a distinct sensor position, wherein the sensor data for at least one measurement parameter includes two measured values obtained at different sensor positions; determining the ablation parameter based on at least one of the sensor data or the two measured values of the same measurement parameter at different sensor positions; and providing the determined ablation parameter.

The utility model provides an ablation detection system, which relates to the field of medical equipment and comprises an ablation module, a detection module, a switching circuit module and an ablation detection electrode. The ablation module and the detection module are both electrically connected with the switching circuit module, and the switching circuit module is electrically connected with the ablation detection electrode; the ablation detection electrode comprises at least one ablation electrode and is used for ablation treatment; the ablation detection electrode further comprises at least two detection electrodes used for detecting target tissue. Only the contact position of the end of the detection electrode and the tissue is conductive, and the other positions are provided with insulating layers; the ablation module is used for outputting ablation current; the detection module is used for outputting the excitation signal and receiving the feedback signal so as to detect the target tissue. The ablation electrode can be guided to reach the preset position of the human tissue. The method can assist in detecting whether target tissues belong to normal tissues, benign tissues or malignant tissues or not, and damage to human tissues is reduced.