The invention relates to a method of analyzing residual local activity after pulsed field ablation of a human heart via a control system (1), wherein the control system (1) receives intracardiac electrogram data comprising at least one unipolar channel (7) comprising a post-PFA section (8) measured at a location in the human heart after an application of pulsed field ablation to the location, wherein the post-PFA section (8) comprises a beat interval (13), wherein the control system (1) delimits the beat interval (13), wherein the control system (1) performs an isolation routine on the beat interval (13) to reduce or remove the influence of at least one additional physiological signal component, wherein the control system (1) derives from the beat interval (13) at least one characteristic of a local activation (20) contained in the beat interval (13), wherein the control system (1) derives from the characteristic a residual activation indicator, wherein the control system (1) outputs the residual activation indicator to a user.
The invention relates to a method of analyzing an intracardiac electrogram via a control system (1), wherein the intracardiac electrogram comprises a, in particular unipolar, channel with a post-PFA section (8) measured at a location of the human heart after an application of pulsed field ablation, wherein the control system (1) performs a filtering step, wherein in the filtering step the control system (1) applies a filter to the post-PFA section (8) of the unipolar channel (7), thereby generating a filtered channel section (26). It is proposed that the filter has a variable attenuation, thereby removing a variable amount of energy associated with a recurrent noise from a frequency band and leaving a variable amount of energy associated with a biosignal in the frequency band, that the variable amount of energy removed from the unipolar channel (7) is changed over time in a filter update routine, that the control system (1) performs at least one filter update routine resulting in a change of the variable amount of energy removed from the unipolar channel (7) within a time frame after the time of the application of pulsed field ablation and implements the update resulting in a filtering of the unipolar channel (7) within the time frame, and, that the time frame is at most 60 seconds.
The invention relates to a method of detecting successful entrainment of a part of a human heart, in particular of an atrium, wherein the method is implemented by a control system (1), wherein the control system (1) generates stimulation events (2) by applying electrical energy to stimulation electrodes (3) placed at the part of the human heart to entrain the part of the human heart and generates pacing data relating to the stimulation events (2), wherein the pacing data comprises a time frame (6) in which the stimulation events (2) occur, wherein the control system (1) measures electrical voltages at measurement electrodes (3) placed at the part of the human heart and generates intracardiac electrogram data (7) from the measurements, wherein the intracardiac electrogram data (7) comprises several electrical activations (8) of the part of the human heart in the time frame (6), wherein the control system (1) detects at least some of the electrical activations (8) in the time frame (6), wherein the control system (1) derives one or more parameters of the stimulation events (2) from the pacing data, wherein the control system (1) derives one or more parameters of the electrical activations (8) in the time frame (6), wherein the control system (1) derives from the one or more parameters of the stimulation events (2) and the one or more parameters of the electrical activations (8) in the time frame (6) whether the part of the human heart was successfully entrained in the time frame (6).
A61N 1/368 - Stimulateurs cardiaques commandés par un paramètre physiologique, p. ex. par le potentiel cardiaque comprenant plus d'une électrode coopérant avec différentes régions du cœur
A method for analysing an intracardiac electrogram (1) for detecting a pulmonary vein (2) isolation status via a control system (3), wherein the intracardiac electrogram has been recorded at a target region (4) via a catheter (5) inserted into a human, wherein the catheter includes multiple electrodes (7), wherein multiple channels (10) of the intracardiac electrogram have been recorded by the electrodes, wherein the electrodes have a fixed order of placement, wherein in an analysis routine (11), the control system determines an electrical status of the target region by analysing at least three of the channels. The order of the electrodes on the catheter is provided to the control system or saved in a memory (13) of the control system. In the analysis routine the control system determines the electrical status of the target region based on spatial information including the order of placement of the electrodes on the catheter.
A method for analyzing an electrogram (1), via a control system, that has been recorded via a catheter inserted into a human body, which includes multiple electrodes. At least one channel (K) of the electrogram has been recorded by, preferably between, the electrodes. The control system detects activation candidates (3) in a first channel (K_a). Multiple different potential sequences (4) of activation candidates are defined along the time dimension (5) of the first channel. The control system assigns costs including one or more independent cost components to the potential sequences, selects a sequence of dominant activations from the potential sequences of the first channel, selects the sequence of dominant activations that fulfills an optimization criterion based on the costs of the potential sequences, and assigns cost components to activation candidates. The costs of the potential sequences include the cost components of the activation candidates defining the respective potential sequence.
The invention concerns a method for determining a cardiac isolation status of a measurement location (1) in the presence of far field interference by analysing a multi-channel intracardiac electrogram (2) of the measurement location (1) via a control system (3), wherein in an identification routine (9) the control system (3) applies an activation search algorithm to analysis windows (10) of at least 400 ms in at least two different channels (11) of the intracardiac electrogram (2), wherein the activation search algorithm identifies windows (W) of local activation potentials (12) inside of the analysis windows (10), wherein in a classification routine (15) the control system (3) analyses the local activation potentials (12) to determine the cardiac isolation status of the measurement location (1).
A method for analyzing a recorded intracardiac electrogram via a control system, wherein the control system:
groups multiple channels of the intracardiac electrogram into at least a first group of channels including at least one channel assigned to a first anatomical region and a second group of channels including at least one channel assigned to a second anatomical region;
derives features including a first derived feature relating to the first anatomical region and a different second derived feature relating to the first anatomical region from the first group of channels and derives the first and second derived feature relating to a second anatomical region from the second group of channels;
derives data points of the derived features in intervals over the time length; and
combines the derived features into a feature space including at least an anatomical dimension and a feature dimension and a time dimension and an intensity dimension.
09 - Appareils et instruments scientifiques et électriques
Produits et services
Software, also downloadable, namely, software relating to the medical field; software, also downloadable, for use in the medical decision support system; software, also downloadable, for medical analysis; software modules for medical analysis, including for analyzing intracardiac electrograms; software, also downloadable, for analyzing intracardiac electrograms; software, also downloadable, for use with medical patient monitoring equipment, for receiving, processing, analyzing, transmitting and displaying data; software, also downloadable, for receiving, processing, analyzing, transmitting, and displaying data for cardiac ablation procedures; Software as a Medical Device (SaMD), downloadable, for analyzing intracardiac electrograms; Software as a Medical Device (SaMD), recorded, for analyzing intracardiac electrograms; Software as a Medical Device (SaMD), downloadable, for receiving, processing, analyzing, transmitting, and displaying data for cardiac ablation procedures; Software as a Medical Device (SaMD), recorded, for receiving, processing, analyzing, transmitting, and displaying data for cardiac ablation procedures..
The invention relates to a method for classifying atrial fibrillation by analysing ECG data (1) via a control system (2), wherein in a decomposition step the control system (2) decomposes the ECG data (1) by a frequency decomposition thereby generating frequency data (7), in particular a frequency spectrum, comprising a frequency dimension (f) and an amplitude dimension (a). It is proposed that in an analysis step the control system (2) identifies in the frequency data (7) a dominant window (8) having a width (9) in the frequency dimension (f) and meeting an amplitude criterion, that the amplitude criterion is based on a sum of amplitudes inside the dominant window (8), that the control system (2) identifies the dominant window (8) by searching on at least a section, in particular a pre-defined section, of the frequency dimension (f) for a window fulfilling the amplitude criterion and that based on the dominant window (8) the control system (2) determines the classification of atrial fibrillation in the ECG data (1).
The invention relates to a method for analyzing potential ablation therapies (1), in particular for patients (P) with atrial fibrillation, via a control system (2), wherein the method comprises an analysis step (3) in which the control system (2) applies a trained machine learning model (4) to input data (5) thereby generating output data (6), wherein the input data (5) comprise electrical biomarkers (7) derived from ECG data (8) from a patient (P) of at least one potential ablation therapy (1), the potential ablation therapy (1) including at least one potential ablation event (9) with a potential ablation location (10), wherein the output data (6) comprise a predicted change of the electrical biomarkers (7) after applying the potential ablation therapy (1) to the patient (P), wherein the predicted change is derived from the input data (5) via the trained machine learning model (4).
G16H 50/70 - TIC spécialement adaptées au diagnostic médical, à la simulation médicale ou à l’extraction de données médicalesTIC spécialement adaptées à la détection, au suivi ou à la modélisation d’épidémies ou de pandémies pour extraire des données médicales, p. ex. pour analyser les cas antérieurs d’autres patients
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
A61B 34/10 - Planification, simulation ou modélisation assistées par ordinateur d’opérations chirurgicales
G16H 10/60 - TIC spécialement adaptées au maniement ou au traitement des données médicales ou de soins de santé relatives aux patients pour des données spécifiques de patients, p. ex. pour des dossiers électroniques de patients
The invention relates to a method for analysing an intracardiac electrogram (1), in particular for detecting a pulmonary vein (2) isolation status, via a control system (3), wherein the intracardiac electrogram (1) has been recorded at a, in particular predetermined, target region (4) via a catheter (5) inserted into a human body, wherein the catheter (5) comprises multiple electrodes (7), wherein multiple channels (10) of the intracardiac electrogram (1) have been recorded by, preferably between, the electrodes (7), wherein the electrodes (7) have a fixed order of placement on the catheter (5), wherein in an analysis routine (11), the control system (3) determines an electrical status of the target region (4) by analysing at least three of the channels (10). It is proposed, that the order of the electrodes (7) on the catheter (5) is provided to the control system (3) or saved in a memory (13) of the control system (3) and that in the analysis routine (11) the control system (3) determines the electrical status of the target region (4) based on spatial information including the order of placement of the electrodes (7) on the catheter (5).
The invention concerns a method for determining a cardiac isolation status of a measurement location (1) in the presence of far field interference by analysing a multi-channel intracardiac electrogram (2) of the measurement location (1) via a control system (3), wherein in an identification routine (9) the control system (3) applies an activation search algorithm to analysis windows (10) of at least 400 ms in at least two different channels (11) of the intracardiac electrogram (2), wherein the activation search algorithm identifies windows (W) of local activation potentials (12) inside of the analysis windows (10), wherein in a classification routine (15) the control system (3) analyses the local activation potentials (12) to determine the cardiac isolation status of the measurement location (1).
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
G16H 50/20 - TIC spécialement adaptées au diagnostic médical, à la simulation médicale ou à l’extraction de données médicalesTIC spécialement adaptées à la détection, au suivi ou à la modélisation d’épidémies ou de pandémies pour le diagnostic assisté par ordinateur, p. ex. basé sur des systèmes experts médicaux
09 - Appareils et instruments scientifiques et électriques
Produits et services
Downloadable computer software for use in the medical decision support system; downloadable computer software for medical analysis; downloadable computer software for analyzing intracardiac electrograms; computer hardware and downloadable software for use with medical patient monitoring equipment, and for receiving, processing, analyzing and transmitting and displaying data
09 - Appareils et instruments scientifiques et électriques
Produits et services
Downloadable software for analyzing intracardiac electrograms; downloadable software for receiving, processing, analyzing, transmitting, and displaying data for cardiac ablation procedures
The invention relates to a method for analyzing potential ablation therapies (1), in particular for patients (P) with atrial fibrillation, via a control system (2), wherein the method comprises an analysis step (3) in which the control system (2) applies a trained machine learning model (4) to input data (5) thereby generating output data (6), wherein the input data (5) comprise electrical biomarkers (7) derived from ECG data (8) from a patient (P) of at least one potential ablation therapy (1), the potential ablation therapy (1) including at least one potential ablation event (9) with a potential ablation location (10), wherein the output data (6) comprise a predicted change of the electrical biomarkers (7) after applying the potential ablation therapy (1) to the patient (P), wherein the predicted change is derived from the input data (5) via the trained machine learning model (4).
G16H 50/50 - TIC spécialement adaptées au diagnostic médical, à la simulation médicale ou à l’extraction de données médicalesTIC spécialement adaptées à la détection, au suivi ou à la modélisation d’épidémies ou de pandémies pour la simulation ou la modélisation des troubles médicaux
G16H 50/20 - TIC spécialement adaptées au diagnostic médical, à la simulation médicale ou à l’extraction de données médicalesTIC spécialement adaptées à la détection, au suivi ou à la modélisation d’épidémies ou de pandémies pour le diagnostic assisté par ordinateur, p. ex. basé sur des systèmes experts médicaux
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Scientific, research, photographic, audiovisual, optical,
weighing, measuring, signalling, detecting, testing,
inspecting, life-saving and teaching apparatus and
instruments; apparatus and instruments for recording,
transmitting, reproducing or processing sound, images or
data; recorded and downloadable media, computer software;
computers and computer peripheral devices; data processing
equipment and computers for use in the medical field;
computer software, including computer software relating to
the medical field and computer software for use in the
medical decision support system; monitoring instruments and
apparatus (for scientific purposes); computer hardware and
software, for use with medical patient monitoring equipment,
for receiving, processing, transmitting and displaying data;
none of the aforesaid goods for use in connection with the
medical imaging, breast health, and cytology fields. Surgical, medical, dental and veterinary apparatus and
instruments; monitoring instruments and apparatus (for
medical purposes); physiological monitoring apparatus for
medical use; medical instalments for recording physiological
data, electronic analyzers and apparatus for medical
purposes; electronic endoscopes for medical use;
physiological apparatus for medical use, medical instruments
for reproducing physiological data; physiological
monitoring, measuring and recording apparatus for medical
use; computerized medical recording and analysis apparatus;
medical diagnostic, examination, and monitoring equipment;
none of the aforesaid goods for use in connection with the
medical imaging, breast health, and cytology fields.
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Data processing equipment and computers for use in the medical field; computer software, namely, downloadable computer software for use in the medical field and medical decision support systems, for medical analysis; software modules for medical analysis, namely, recorded computer software programs for medical data analysis; downloadable computer software for analyzing intracardiac electrograms; computer hardware and downloadable computer software for use with medical patient monitoring equipment, for receiving, processing, analyzing, transmitting, and displaying data Monitoring instruments and apparatus for medical purposes, namely, medical devices for monitoring cardiac activity; physiological monitoring apparatus for medical use, namely, medical devices for monitoring vital signs, blood properties, and respiratory events; medical instruments for recording physiological data, namely, heart activity; electronic analyzers and apparatus for medical purposes, namely, body composition analyzers for medical purposes; medical instruments for reproducing and analyzing physiological data, namely, electrocardiogram monitors for measuring and analyzing heart rate and blood pressure; physiological monitoring, measuring, analyzing and recording apparatus for medical use, namely, electrocardiogram monitors and recorders; computerized medical recording and analysis apparatus, namely, electrocardiogram monitors and recorders; medical diagnostic, examination, analysis and monitoring equipment, namely, electrocardiogram monitors and recorders; medical apparatus and instruments for use in analyzing intracardiac electrograms, namely, electrocardiogram monitors and recorders
The invention relates to a method for classifying atrial fibrillation by analysing ECG data (1) via a control system (2), wherein in a decomposition step the control system (2) decomposes the ECG data (1) by a frequency decomposition thereby generating frequency data (7), in particular a frequency spectrum, comprising a frequency dimension (f) and an amplitude dimension (a). It is proposed that in an analysis step the control system (2) identifies in the frequency data (7) a dominant window (8) having a width (9) in the frequency dimension (f) and meeting an amplitude criterion, that the amplitude criterion is based on a sum of amplitudes inside the dominant window (8), that the control system (2) identifies the dominant window (8) by searching on at least a section, in particular a pre-defined section, of the frequency dimension (f) for a window fulfilling the amplitude criterion and that based on the dominant window (8) the control system (2) determines the classification of atrial fibrillation in the ECG data (1).
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Scientific, research, photographic, audiovisual, optical, weighing, measuring, signaling, detecting, testing, inspecting, life-saving and teaching apparatus and instruments; apparatus and instruments for recording, transmitting, reproducing or processing sound, images or data; recorded and downloadable media, computer software; computers and computer peripheral devices; data processing equipment and computers for use in the medical field; computer software, including computer software relating to the medical field, computer software for use in the medical decision support system, and computer software for medical analysis; software modules for medical analysis, including for analyzing intracardiac electrograms; computer software for analyzing intracardiac electrograms; computer hardware and software, for use with medical patient monitoring equipment, for receiving, processing, analyzing and transmitting and displaying data. Surgical, medical, dental and veterinary apparatus and instruments; monitoring instruments and apparatus (for medical purposes); physiological monitoring apparatus for medical use; medical instruments for recording physiological data; electronic analyzers and apparatus for medical purposes; medical instruments for reproducing and analyzing physiological data; physiological monitoring, measuring, analyzing and recording apparatus for medical use; computerized medical recording and analysis apparatus; medical diagnostic, examination, analysis and monitoring equipment; medical apparatus and instruments for use in analyzing intracardiac electrograms.
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Computers and computer peripheral devices, all for use with the medical field; data processing equipment and computers for use in the medical field; downloadable computer software, namely, computer software for use in a medical decision support system for analyzing patient electrophysiology data; monitoring instruments and apparatus for medical research and scientific purposes, namely, electronic monitors for electrophysiology studies; computer hardware and downloadable computer software for use with medical patient monitoring equipment, for receiving, processing, transmitting and displaying data; none of the foregoing for use in connection with the medical imaging, breast health, or cytology fields or in the automotive field Surgical apparatus and instruments for medical, dental and veterinary use; monitoring instruments and apparatus for medical purposes, namely, medical devices for monitoring electrophysiology signals; medical instruments for recording physiological data, namely, heart activity; electronic analyzers and apparatus for medical purposes, namely, for analyzing electrophysiology data in the nature of body composition analyzers; electronic endoscopes for medical use; medical instruments for reproducing physiological data, namely, body composition analyzers and electrocardiogram monitors for reproducing electrophysiology data; physiological monitoring, measuring and recording apparatus for medical use, namely, dynamic electrocardiogram monitors and recorders; computerized medical recording and analysis apparatus, namely, dynamic electrocardiogram monitors and recorders; medical diagnostic, examination, and monitoring equipment, namely, dynamic electrocardiogram monitors and recorders; none of the foregoing for use in connection with the medical imaging, breast health, or cytology fields or in the automotive field
22.
Isolation amplification circuit with improved common mode rejection
An isolation amplification circuit having an input stage circuitry and a control circuitry stage interconnected through a galvanic isolation barrier. The input stage circuitry includes a first filter network and a second filter network for supplying first and second output signals in response to the application of first and second electrical input signals. The input stage circuitry includes a first feedback path configured for applying a first feedback signal to a common node of the first filter network to close a first feedback loop around the first filter network and a second feedback path configured for applying a second feedback signal to a common node of the second filter network to close a second feedback loop around the second filter network.
A61B 5/301 - Circuits d’entrée à cet effet sans conduction électrique directe au patient, p. ex. en utilisant des transformateurs isolants ou des optocoupleurs
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
H03F 1/26 - Modifications des amplificateurs pour réduire l'influence du bruit provoqué par les éléments amplificateurs
H03F 1/34 - Circuits à contre-réaction avec ou sans réaction
H03H 7/01 - Réseaux à deux accès sélecteurs de fréquence
H03H 7/075 - Réseaux en échelle, p. ex. filtres à onde électrique
An electrophysiology system including signal channels each of which processes an electrophysiological signal along a signal path extending from an input port that receives the analog electrophysiological signal, via an adjustable gain element that amplifies the electrophysiological signal, and via an ADC element that converts the analog signal into a corresponding digital signal, to an output port. The system further includes a monitoring element that generates a monitoring signal representative of a DC component of the electrophysiological signal and a gain control element that generates a control signal responsive to the monitoring signal. The control signal controls the gain setting of the gain element to cause a decrease in gain, if an increase in the magnitude of the DC component is determined; and/or an increase in gain, if a decrease in the magnitude of the DC component is determined.
A switchable filter device for use in a system for recording electro-physiological signals. The filter device includes a plurality of recording channels, the recording channels having an ablation recording channel. Each recording channel has a patient side terminal at a patient interface and a corresponding recording side terminal at a recording device interface. Each recording channel includes a first signal path with a first frequency dependent transmission characteristic having a first pass band, a second signal path with a second frequency dependent transmission characteristic different from the first frequency dependent transmission characteristic, the second frequency dependent transmission characteristic having a second pass band overlapping the first pass band, and switching devices operable to switch between the first signal path and the second signal path in response to a control signal indicative of a transient interference signal. Preferably, switching from the second signal path to the first signal path is performed with a switching delay after termination of the transient interference signal.
A61B 5/287 - Supports pour électrodes multiples, p. ex. cathéters à électrode pour des études électrophysiologiques [EEP]
A61B 18/00 - Instruments, dispositifs ou procédés chirurgicaux pour transférer des formes non mécaniques d'énergie vers le corps ou à partir de celui-ci
A61B 18/12 - Instruments, dispositifs ou procédés chirurgicaux pour transférer des formes non mécaniques d'énergie vers le corps ou à partir de celui-ci par chauffage en faisant passer des courants à travers les tissus à chauffer, p. ex. des courants à haute fréquence
25.
ISOLATION AMPLIFICATION CIRCUIT WITH IMPROVED COMMON MODE REJECTION
The present invention relates to an isolation amplification circuit which comprises an input stage circuitry and a control circuitry stage interconnected through a galvanic isolation barrier. The input stage circuitry comprises a first filter network and a second filter network for supplying first and second output signals in response to the application of first and second electrical input signals. The input stage circuitry comprises a first feedback path configured for applying a first feedback signal to a common node of the first filter network to close a first feedback loop around the first filter network and a second feedback path configured for applying a second feedback signal to a common node of the second filter network to close a second feedback loop around the second filter network.
The present invention relates to an electrophysiology system comprising one or more signal channels, wherein each signal channel is adapted for processing an electrophysiological signal along a signal path. The signal path extends from an input port configured for receiving the electrophysiological signal as an analog signal, via at least one adjustable gain element adapted for amplifying the electrophysiological signal with a gain according to a gain setting, and via an ADC element adapted for converting the analog signal into a digital signal corresponding to the electrophysiological signal, to an output port arranged for providing the digital signal as an output. The electrophysiology system further comprises a monitoring element configured for generating a monitoring signal representative of a magnitude of a DC component of the electrophysiological signal and a gain control element configured for generating a control signal in response to the monitoring signal. The control signal is adapted to control the gain setting of the adjustable gain element so as to cause a decrease in gain, if an increase in the magnitude of the DC component is determined; and/or an increase in gain, if a decrease in the magnitude of the DC component is determined.
A61B 5/0428 - Circuits d'entrée spécialement adaptés à cet effet
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
A61N 1/365 - Stimulateurs cardiaques commandés par un paramètre physiologique, p. ex. par le potentiel cardiaque
A61B 5/042 - Electrodes spécialement adaptées à cet effet pour l'introduction dans le corps
A61B 18/00 - Instruments, dispositifs ou procédés chirurgicaux pour transférer des formes non mécaniques d'énergie vers le corps ou à partir de celui-ci
d) placed at respective cardiac locations in or on an individual (99) and a processor device (40) adapted to process one or more input signals, which are based on the collected electrophysiological potential(s). The processing includes running an adaptive filter algorithm on one or more signals based on the input signals. The adaptive filter algorithm is arranged to calculate estimated noise component(s) of the signals and arranged to subtract the estimated noise component(s) from the signals. In this way a cardiac signal is derived where the noise has been significantly reduced.
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Scientific, measuring, signaling and checking (supervision)
apparatus and instruments; data processing equipment and
computers for use in the medical field; computer software,
including computer software relating to the medical field
and computer software for use in the medical decision
support systems; instruments for recording heart activity
[for scientific purposes]; monitoring instruments and
apparatus [for scientific purposes]; computer hardware and
software, for use with medical patient monitoring equipment,
for receiving, processing, transmitting and displaying data. Surgical, medical, dental and veterinary apparatus and
instruments; monitoring instruments and apparatus [for
medical purposes]; instruments for recording heart activity
[for medical purposes]; electrocardiograph monitoring
apparatus; electronic heart rate and heart signal monitoring
apparatus [for medical use]; electronic heart rate and heart
signal recorders [for medical use]; physiological monitoring
apparatus for medical use; electrocardiographic recorders;
medical instruments for recording physiological data;
dynamic electrocardiogram monitors; electronic analyzers and
apparatus for medical purposes; electronic endoscopes for
medical use; physiological apparatus for medical use;
medical instruments for reproducing physiological data;
physiological monitoring, measuring and recording apparatus
for medical use; computerized medical recording and analysis
apparatus for the diagnosis and treatment of arrhythmia;
cardiac arrhythmia control devices; cardiac probes,
catheters and electrodes; medical apparatus for cardiac
surgery; medical instruments to measure blood pressure,
cardiac output and other physiological and cardiovascular
parameters; medical devices for improving cardiac
performance through aortic flow therapy; medical apparatus
and instruments for monitoring heart activity; medical
diagnostic, examination, and monitoring equipment.
31.
FILTERING DEVICE FOR RECORDING ELECTROPHYSIOLOGICAL SIGNALS
The present invention relates to a switchable filter device for use in a system for recording electro-physiological signals. The filter device comprises a plurality of recording channels, the recording channels comprising an ablation recording channel. Each recording channel has a patient side terminal at a patient interface and a corresponding recording side terminal at a recording device interface. Each recording channel comprises a first signal path with a first frequency dependent transmission characteristic having a first pass band, a second signal path with a second frequency dependent transmission characteristic different from the first frequency dependent transmission characteristic, the second frequency dependent transmission characteristic having a second pass band overlapping the first pass band, and switching devices operable to switch between the first signal path and the second signal path in response to a control signal indicative of a transient interference signal. Preferably, switching from the second signal path to the first signal path is performed with a switching delay after termination of the transient interference signal.
A61B 5/0428 - Circuits d'entrée spécialement adaptés à cet effet
A61B 5/042 - Electrodes spécialement adaptées à cet effet pour l'introduction dans le corps
A61B 18/00 - Instruments, dispositifs ou procédés chirurgicaux pour transférer des formes non mécaniques d'énergie vers le corps ou à partir de celui-ci
System for filtering cardiac signals, the system comprising: a plurality of cardiac terminals (10a-d) adapted to collect cardiac electrophysiological potentials from a plurality of cardiac electrodes (1a-d) placed at respective cardiac locations in or on an individual (99) and a processor device (40) adapted to process one or more input signals which are based on the collected electrophysiological potential(s). The processing comprises running an adaptive filter algorithm on one or more signals based on the input signals, said adaptive filter algorithm being arranged to calculate one or more estimated noise component(s) of said one or more signals and being arranged to subtract said one or more estimated noise component(s) respectively from said one or more signals. In this way a cardiac signal is derived where the noise has been significantly reduced.
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Data processing equipment and computers for use in the medical field; computer software, namely, computer software for database management for use in the medical field; computer software for use in clinical medical decision support, namely, software for compiling and analyzing medical data to aid healthcare providers in decisions relating to medical diagnosis and treatment; computer hardware and software, for use with medical patient monitoring equipment and for receiving, processing, transmitting and displaying patient medical data Surgical apparatus and instruments for use in cardiac medical procedures; instruments for recording heart activity for medical purposes, namely, heart rate monitoring apparatus, heart monitors, electronic heart rate monitors; electrocardiographs; electronic heart rate monitors; medical instruments for recording heart activity; monitors especially adapted for electrocardiographs and used in direct association therewith; electrocardiographic (ECG) recorders; electronic endoscopes for medical use; medical diagnostic apparatus and analytical apparatus for medical purposes all for use in the cardiac field; computerized medical recording and analysis apparatus for the diagnosis and treatment of arrhythmia; cardiac probes; catheters; electrodes for medical use; surgical apparatus for use in cardiac surgery; medical instruments to measure blood pressure, cardiac output and other physiological and cardiovascular parameters; medical devices for improving cardiac performance through aortic flow therapy
34.
SYSTEM AND METHOD FOR PROCESSING SIGNALS FROM INTRACARDIAC CATHETERS
The present invention relates in one aspect to a system for recording intracardiac signals and for providing stimulation pulses and /or ablation energy at intracardiac locations. The system comprises a plurality of intracardiac terminals adapted to collecting intracardiac electrophysiological potentials from respective intracardiac locations in an individual; an indifferent terminal adapted to collecting indifferent electrophysiological potentials from the individual; a differential amplifier stage adapted to receiving and amplifying the electrophysiological potentials collected from the intracardiac and indifferent terminals with respect to a signal reference to obtain respective intracardiac and indifferent signals; a processor device adapted to determining a common mode signal as an average of the intracardiac and indifferent signals and adapted to providing an output of intracardiac data based at least on the intracardiac signals, wherein the intracardiac signals are referenced with respect to the common mode signal. The invention relates further to a method of processing intracardiac electrophysiological signals.
The invention relates to a modular control unit for a multiple catheter cardiac electrophysiology (EP) system. The modular control unit comprises a common interface configured for communicating with a computer through a computer interface port, a first catheter control module configured for cardiac EP-diagnosis, and a second catheter control module configured for cardiac EP-diagnosis. The first and second catheter control modules each have circuitry comprising a catheter port configured for electrically connecting one or more electrodes of an EP-catheter to the circuitry, an EP-signal recorder comprising devices for amplifying and processing EP-signals received from the catheter port, a stimulation section for feeding a cardiac stimulation signal to the catheter port, and a module-microcontroller (MCU) configured for controlling the operation of the EP-signal recorder and the operation of the stimulation section. The first and second catheter control modules are galvanically isolated from each other and communicate with the common interface through a respective, galvanically isolated module interface port.
