30 results about "Cardiac mapping" patented technology

Methods and system for atrial fibrillation ablations and other cardiac procedures utilizes a cardiac mapping system for navigation and guidance, and includes an additional virtual reality (VR) system and an augmented reality (AR) or mixed reality (MR) system. The Cardiac mapping system utilizes medical images and patient's electrical signals. The virtual reality (VR) system is utilized pre-procedure for visualization and pre-procedure planning. The augmented reality (AR) or mixed reality (MR) system is utilized pre-procedure or intra-procedure. Methods and system are disclosed utilizing pre-built virtual device models which interact with 3D volume rendered structures from patient's CT or MRI of the region of interest (ROI) for the different type of cardiac procedure. With virtual reality (VR) the operator utilizes hand-held sensors. With augmented reality (AR) or mixed reality (MR) a combination of hand gestures and an X-box controller is used to manipulate virtual devices, anatomical structures in the Hologram.

An integrated cardiac mapping and Piezoelectric Micromachined Ultrasonic Transducer (pMUT) ultrasonic imaging system, is disclosed. The system comprising a pMUT imaging and mapping catheter having a longitudinal axis, a proximal end, and a distal end. A micro-electromechanical (MEMS) based pMUT or other transducer disposed within the distal end of the pMUT imaging and mapping catheter. A pMUT mapping array disposed within the distal end of the pMUT imaging and mapping catheter, wherein the mapping array comprises an expandable basket, grid, hoop, or other configuration with an electronic sensor array arranged on electronic flex circuits.

Perform cardiac mapping. 【Solution means】A system comprising: A display, A processor, Based on each signal acquired by a plurality of electrodes belonging to an in-vivo probe on the anatomical surface of the heart, calculate each local activation time (LAT) at each position of the electrodes, Based on the LAT, calculate each direction and speed of electrical propagation at the position, While the electrodes are each at the position, display an icon of the probe on the display, Dispose each marker having at least one characteristic oriented in the direction of the electrical propagation and varying according to the speed at a portion of the icon corresponding to the electrode, A processor configured as such, including.

The invention relates to the technical field of medical surgical instruments, in particular to a flexible multichannel heart mapping electrode for heart transfer and a construction method.The mapping electrode comprises a flexible substrate, a plurality of electrodes and a packaging layer, the flexible substrate is provided with a plurality of branches, the fixed ends of all the branches are connected with a common part, and the fixed ends of all the branches are connected with the packaging layer; the plurality of electrode arrays are arranged on one surface, in contact with the heart, of each branch and are used for measuring the potential of the heart, and the flexible substrate is made of a biocompatible flexible insulating material, so that each branch can be adsorbed by the surface tension of body fluid on the outer surface of the heart, the stimulation and damage to heart tissues are reduced, and the measurement accuracy is improved. Meanwhile, the electrode can be more accurately attached to the surface of the heart, the electric potential of the heart is accurately measured, and the mapping accuracy of the electrical activity of the heart is greatly improved.

To provide a cardiac mapping and / or ablation catheter having a flexible probe tip.SOLUTION: A medical probe including an end effector is disclosed herein. The end effector includes a flexible insulative material extending along a plane, a framework disposed within the flexible insulative material, and a flexible circuit disposed within the flexible insulative material and spaced apart from the framework. The flexible circuit includes a central branch segment, a plurality of outer branch segments, and a plurality of electrodes. The central branch segment extends along a longitudinal axis of the plane. The outer branch segments extend along a plane at a distance away from the longitudinal axis, and at least some of the outer branch segments extend distally of the central branch segment, thereby defining a recess at the distal end of the end effector. The electrodes are disposed along the central branch and the plurality of outer branch segments.SELECTED DRAWING: Figure 2A

To provide a cardiac diagnostic and therapeutic system.SOLUTION: A system includes a display and a processor. The processor is configured to (a) receive multiple electrophysiological (EP) signals acquired by multiple electrodes of a multi-electrode catheter that are in contact with tissue of a cardiac chamber, (b) reject one or more of the EP signals using a set of rejection criteria, and further process the EP signals that are not rejected, and visualize to a user, on the display, (i) a current setting of the rejection criteria, and (ii) a rejection effectiveness of each of the rejection criteria in the current setting.SELECTED DRAWING: Figure 1

Cardiac mapping catheters and methods for using the catheters are described. The catheter can detect the presence, direction and / or source of a depolarization wave front associated with cardiac arrhythmia. A mapping catheter includes a plurality of bipolar electrode pairs in which the members of each pair are opposed to one another across a perimeter, for instance in a circular pattern (compass mode). The spaced arrangement of the electrodes can be utilized to identify directional paths of moving electric fields or wave fronts in any direction passing across the endocardial surface. Double potential (DP) recordings in compass mode can provide a regional assessment for the existence of rotational activity. Simultaneous DP recordings in compass mode, narrow-adjacent bipolar, and unipolar recording provide an accurate assessment of the time, location, and path that a rotational mechanism breaches a perimeter of electrodes. Accurate time, location, and path of perimeter breaches can be used to electrically track rotational mechanisms during atrial fibrillation.

Devices and methods for cardiac mapping and ablation are described. In some embodiments, an apparatus for cardiac mapping and ablation includes an elongated tube with a distal and proximal end, connected to a matrix of tubes that create a surface attached to the distal end of the first tube, with at least one conductive wire parallel to the first tube, and multiple conductive elements, electrically isolated from the conductive wire, attached to the matrix of tubes. The tube and matrix apparatus constructed of materials bio compatibly suitable for introduction into the human vascular system and heart

The invention is entitled "System and method for detecting arrhythmic heartbeats and detecting cardiac mapping annotations." Systems and methods for detecting mapping annotations of an electrophysiology (EP) mapping system are disclosed. The system includes a processor including a machine learning algorithm configured to: receive a first heartbeat at an identified cardiac spatial location, the first heartbeat including a first set of attribute information corresponding to the first heartbeat; receive a second heartbeat at the identified cardiac spatial location, the second heartbeat including a second set of attribute information corresponding to the second heartbeat; compare the first set of attribute information to the second set of attribute information; and determine which of the first heartbeat and the second heartbeat has the best characteristics based on the compared attribute information.

Electrophysiological activity can be mapped using sub-intervals of electrophsyiological signals. An electroanatomical mapping system receives a plurality of electrophsyiological signals (402), each of which spans an activation interval. For each signal, the system identifies an initial event time within the activation interval, such as by identifying a time of maximum signal energy (404), and defines a sub-interval about the initial event time (406). The system then analyzes the sub-interval to identify one or more electrophysiological characteristics of the electrophysiological signal (408) and adds a corresponding electrophysiology data point to an electrophysiology map (410). Advantageously, the sub-interval can extend outside of the activation interval, such that the instant teachings allow for capture and analysis of deflections that occur at or near the boundaries of the activation interval.

Real-time assessment of reject filters during cardiac mapping. A system is disclosed that includes a display and a processor. The processor is configured to (a) receive a plurality of electrophysiology (EP) signals acquired by a plurality of electrodes of a multi-electrode catheter in contact with tissue of a heart chamber, (b) reject one or more of the EP signals using a set of rejection criteria, and further process the EP signals that are not rejected, and (c) visualize to a user on the display: (i) a current setting of the rejection criteria, and (ii) a rejection effectiveness of each of the rejection criteria at the current setting.

Devices and methods for cardiac mapping and ablation are described. In some embodiments, an apparatus for cardiac mapping and ablation includes an elongated tube with a distal and proximal end, connected to a matrix of tubes that create a surface attached to the distal end of the first tube, with at least one conductive wire parallel to the first tube, and multiple conductive elements, electrically isolated from the conductive wire, attached to the matrix of tubes. The tube and matrix apparatus constructed of materials bio compatibly suitable for introduction into the human vascular system and heart.

This invention belongs to the field of cardiac mapping technology, and particularly relates to a method, apparatus, and terminal device for mapping cardiac function parameters. The method includes acquiring cardiac image data; performing image registration on each image to be registered in the image data to obtain a registered image; extracting cardiac region images from the registered images; and outputting a result image for analyzing the cardiac function parameters based on the cardiac region images. This significantly improves the efficiency of data acquisition, reduces the difficulty of data acquisition, expands the mapping range, and improves resolution.

Methods and systems for collecting and presenting cardiac medical information to a physician using a medical device. The method includes receiving impedance-based position data from the electrode. A first navigation pattern for visualizing the medical device is generated using the impedance-based position data. Magnetic-based position data is received from a magnetic sensor. A second navigation pattern for visualizing the medical device is generated using the magnetism-based position data. It is determined whether the medical device is within the magnetic motion frame generated by the magnetic field generator. One or more of the magnetic-based position data and the impedance-based position data are used to determine whether the medical device is within the magnetic motion frame. The method includes outputting a first navigation mode to a display when the medical device is outside the magnetic motion frame; and outputting a second navigation mode to the display when the medical device is inside the magnetic motion frame.

A medical system is provided. The medical system includes a processing device communicatively coupled to a probe. The processing device operates to cause the medical system receive physiological signals from electrodes of the probe and decompose the physiological signals into near-field component and far-field component by using mutual information from a set of the electrodes. The processing device operates to cause the medical system utilize the near-field components for localizing in time where a wave went under at least one of the plurality of electrodes.

A dynamic display system of cardiac information includes one or more electrodes configured to record a plurality of time intervals of a set of electrical potential data representative of cardiac activity, and a cardiac information console including a signal processor configured to calculate a plurality of time intervals of a set of cardiac activity data using the recorded set of electrical potential data, wherein the cardiac activity data is associated with surface locations of one or more chambers of the heart, and a user interface module configured to display a series of images, each image including a graphical representation of cardiac activity. Methods of providing cardiac activity data are also provided.

Systems, methods, and devices allow percutaneous mapping, orientation and / or ablation in bodily cavities or lumens. Such may include a structure that is percutaneously positionable in a cavity, such as an intra-cardiac cavity of a heart. Transducers carried by the structure are responsive to blood flow. For example, the transducers may sense temperature, temperature being related to convective cooling caused by blood flow. A controller discerns positional information or location, based on signals from the transducers. For example, blood flow may be greater and / or faster proximate a port in cardiac tissue than proximate tissue spaced from the port. Position information may allow precise ablation of selected tissue, for example tissue surround a port in the intra-cardiac cavity.

A system for surgical imaging is disclosed. The system utilizes imaging devices configured to be inserted into a body of a patient. The system includes a display device, a first catheter having a first transducer. The first transducer is configured to sense an anatomical structure of the body and output a first set of imaging data. The system includes a second catheter having a second transducer configured to sense the anatomical structure and output a second set of imaging data. The system includes a processor in communication with a memory storing executable instructions. The system receives, simultaneously, the first set and second set of imaging data. The system determines positions of the anatomical structures, based on the first and second set of imaging data. The system displays, on the display device, a real-time rendering of the anatomical structure based on the position of the anatomical structure.

To improve the precision of cardiac mapping.SOLUTION: At least some aspects of the present disclosure is directed to a system for processing cardiac information. The system comprises a processing unit configured to receive an activation waveform comprising a set of activation waveform data of multiple signal sections collected at multiple locations, and receive a range of window size. The processing unit is further configured to for each of the signal sections, determine a set of confidence values each corresponding to a window size, by iterating through multiple window sizes in the range of window size. The processing unit is further configured to determine one of multiple local cycle lengths for each of the signal sections based on the selected window size and generate a local cycle length histogram based on the local cycle lengths.SELECTED DRAWING: Figure 1

Systems, methods, and devices having improved conformal properties for biomedical signal measurement are disclosed. A device can have a first polymer substrate coupled to a conductive layer forming a conductive trace electrically coupled to a conductive pad exposed via an opening. The device can have a second polymer substrate forming a first cavity between the first polymer substrate and the second polymer substrate. The device can have a first inlet portion that receives a fluid that expands the first cavity causing the device to conform to an anatomical structure. The structure can be an atrium, such as the left atrium, of the heart of a patient. The device can conform to the walls of the tissue structure, and the conductive pad exposed via the opening can detect a signal from the wall of the tissue structure. The signal can be provided to an external measurement device for processing.

An integrated cardiac mapping and piezoelectric micromachined ultrasound transducer (pMUT) ultrasound imaging system is disclosed. The system includes a pMUT imaging and mapping catheter having a longitudinal axis, a proximal end, and a distal end. A microelectromechanical (MEMS)-based pMUT or other transducer disposed within the distal end of a pMUT imaging and mapping catheter. A pMUT mapping array disposed within the distal end of the pMUT imaging and mapping catheter, where the mapping array includes an expandable basket structure, a grid, a hoop, or other configuration having an array of electronic sensors disposed on an electronic flexible circuit.

A catheter (e.g., high-density mapping catheter) and related catheter system is described herein. The catheter includes an elongated catheter shaft, and an electrode assembly. The electrode assembly includes a first spline assembly, a second spline assembly, and a distal coupler assembly. Each of the spline assembly includes a distal portion and spline assembly electrodes distributed along the spline assembly. The distal coupler assembly includes a base member and a distal electrode. The base member defines an opening configured to receive and accommodate the distal portion of the second spline assembly. The distal electrode is configured to be mounted to the base member to secure the distal portion of the second spline assembly within the opening. The distal electrode can be configured for cardiac mapping, tissue ablation, and / or bipolar pacing.

This invention relates to the field of medical surgical instruments, specifically to a flexible multi-channel cardiac mapping electrode for cardiac transport and its construction method. The mapping electrode includes a flexible substrate, multiple electrodes, and an encapsulation layer. The flexible substrate has multiple branches, with the fixed ends of all branches connected to a common part. Multiple electrode arrays are disposed on the side of each branch that contacts the heart for measuring the cardiac potential. The flexible substrate is made of a biocompatible flexible insulating material, allowing each branch to be adsorbed by the surface tension of the body fluid on the outer surface of the heart. This not only reduces stimulation and damage to cardiac tissue but also allows the electrodes to more precisely conform to the heart surface, accurately measuring the cardiac potential and greatly improving the accuracy of cardiac electrical activity mapping.

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.

Provided are a localization system and method useful in the acquisition and analysis of cardiac information. The localization system and method can be used with systems that perform cardiac mapping, diagnosis and treatment of cardiac abnormalities, as examples, and in the retrieval, processing, and interpretation of such types of information. The localization system and method use high impedance inputs, improved isolation, and relatively high drive currents for pairs of electrodes used to establish a multi-axis coordinate system. The axes can be rotated and scaled to improve localization.

An integrated cardiac mapping and Piezoelectric Micromachined Ultrasonic Transducer (pMUT) ultrasonic imaging system, is disclosed. The system comprising a pMUT imaging and mapping catheter having a longitudinal axis, a proximal end, and a distal end. A micro-electromechanical (MEMS) based pMUT or other transducer disposed within the distal end of the pMUT imaging and mapping catheter. A pMUT mapping array disposed within the distal end of the pMUT imaging and mapping catheter, wherein the mapping array comprises an expandable basket, grid, hoop, or other configuration with an electronic sensor array arranged on electronic flex circuits.

A method for processing at least one electrical signal received from a mapping catheter electrode during cardiac mapping of a patient's heart is disclosed. The method comprises processing the at least one electrical signal to identify a heartbeat in the signal at a time t; analyzing a portion of the at least one electrical signal prior to the detected heartbeat to identify a time t′ when motion of the mapping catheter electrode is at a minimum; and selecting a catheter position for the heartbeat as the position of the catheter at the time t′.

A system for training a neural network to automatically detect a cardiac structure of interest includes a processor comprising a neural network training model that receives training data. The training data comprises a first input comprising first electrophysiological data regarding a first cardiac structure received by an electrode of a first catheter positioned within a heart, and a second input comprising a second data relating to the first cardiac structure. The neural network training model generates, as an output, a determination of whether the first cardiac structure is the cardiac structure of interest based on the training data.

This invention discloses a non-contact cardiac 3D mapping method and system, belonging to the field of image mapping technology. The method involves acquiring a sequence of cardiac ultrasound images across multiple cardiac cycles; preprocessing each cardiac ultrasound image to obtain optimized cardiac ultrasound images, including image enhancement and edge detection; registering each optimized cardiac ultrasound image based on a geometric constraint matching algorithm to ensure they are in the same coordinate system; performing 3D reconstruction using a triangulation algorithm based on the registered optimized cardiac ultrasound images to obtain a 3D cardiac model; performing 3D mapping of the cardiac structure on the 3D cardiac model; and outputting the 3D cardiac mapping results. The use of automated algorithms to process cardiac ultrasound images generates a high-quality 3D cardiac model for mapping in a shorter time, improving operational efficiency and accuracy compared to traditional manual operations, avoiding the subjective influence of manual mapping, and reducing surgical safety risks.