Patents Assigned to Widemed Ltd.
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Publication number: 20120209126Abstract: A method of analyzing physiological data indicative of myocardial activity is disclosed. The method comprises: identifying in the data a set of N features, each corresponding to a ventricular depolarization, and calculating M time-intervals for each ventricular depolarization feature, thereby providing a vector of N*M time-intervals. The method further comprises fitting the vector to a power density function of time-intervals, and determining possible cardiac arrhythmia based on statistical parameters characterizing the function.Type: ApplicationFiled: October 20, 2010Publication date: August 16, 2012Applicant: Widemed Ltd.Inventors: Yariv Avraham Amos, Gil Kaminski
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Publication number: 20110054279Abstract: A method for diagnosis comprises receiving a signal associated with respiration of a patient. The signal is processed so as to identify features that are indicative of beginning and end times of apnea episodes. Time shifts between recurrences of the features are computed and processed so as to generate an output comprising a plurality of bands corresponding to different multiples of a cycle length of the apnea episodes.Type: ApplicationFiled: March 25, 2009Publication date: March 3, 2011Applicant: Widemed Ltd.Inventors: Daniel Reisfeld, Yariv Avraham Amos, Deganit Barak-Shinar
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Patent number: 7803118Abstract: A method for diagnosis includes receiving a signal associated with blood oxygen saturation of a patient during sleep. The signal is filtered so as to eliminate signal components at frequencies equal to and greater than a respiratory frequency of the patient. The filtered signal is processed to detect a pattern corresponding to multiple cycles of periodic breathing.Type: GrantFiled: May 17, 2007Date of Patent: September 28, 2010Assignee: Widemed Ltd.Inventors: Daniel Reisfeld, Hila Sberro
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Patent number: 7803119Abstract: A method for diagnosis includes receiving a signal associated with respiration of a patient during sleep, and processing the signal to detect occurrences of a pattern corresponding to multiple cycles of periodic breathing. A cumulative duration of the occurrences is computed, and a prognosis of the patient is determined based on the cumulative duration.Type: GrantFiled: May 17, 2007Date of Patent: September 28, 2010Assignee: Widemed Ltd.Inventor: Daniel Reisfeld
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Patent number: 7794406Abstract: A method for diagnosis includes receiving from a sensor coupled to a body of a patient a photoplethysmograph signal, which is indicative of blood flow in the body. The photoplethysmograph signal is processed so as to identify at least one irregularity in a heart rhythm of the patient. A record indicating a time of occurrence of the at least one irregularity is made and processed so as to diagnose a pathological cardiac condition of the patient.Type: GrantFiled: May 17, 2007Date of Patent: September 14, 2010Assignee: Widemed Ltd.Inventors: Daniel Reisfeld, Simon Kogan
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Patent number: 7674230Abstract: A method for diagnosis includes receiving from a sensor coupled to a body of a sleeping patient a photoplethysmograph signal. The photoplethysmograph signal is processed independently of any other physiological measurements in order to identify sleep stages of the patient.Type: GrantFiled: May 17, 2007Date of Patent: March 9, 2010Assignee: Widemed Ltd.Inventor: Daniel Reisfeld
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Patent number: 7640055Abstract: Methods and systems that (a) adaptively segment a raw data stream(s) of different type biomedical signals; (b) assign attribute values to each segment; (c) determine an attribute domain based on a point corresponding to said segment attribute value; (d) generate a cluster set(s) in said attribute domain that includes a combination of points; (e) obtain a probability of order of appearance of each cluster point, according to its property value; (f) use said probability to update each point's property value; (g) repeat (d) through (f) while varying combinations of points in clusters according to their most updated property values and points derived from additional raw data stream adaptive segmentations; (h) associate at least one updated cluster with a normal/abnormal physiological state based on reference clusters in said domain; and (i) obtain the change probability between normal/abnormal physiological states using said probability of the order of appearance.Type: GrantFiled: October 2, 2003Date of Patent: December 29, 2009Assignee: Widemed Ltd.Inventors: Amir Geva, Baruch Levi, Kobi Todros, Assaf Pressman, Arye Mergi
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Publication number: 20090292215Abstract: A method for diagnosis includes acquiring a physiological signal from a patient (22) during a period of sleep, and segmenting the signal to define a time sequence of quasi-stationary segments, each of the segments having a respective frequency spectrum. Respective levels of membership of the segments in a plurality of frequency states are computed responsively to the respective frequency spectrum. Based on the respective levels of membership, a sleep quality indicator is determined and displayed, responsively to a statistical characteristic of the segments.Type: ApplicationFiled: July 21, 2005Publication date: November 26, 2009Applicant: WIDEMED LTDInventors: Koby Todros, Baruch Levy, Alex Novodvorets, Amir B. Geva
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Patent number: 7578793Abstract: A method for diagnosis of a sleep-related condition of a patient having a thorax. The method includes receiving physiological signals from sensors coupled to the thorax of the patient, and analyzing the physiological signals, independently of any electroencephalogram (EEG) or electro-oculogram (EOG) signals, in order to identify sleep stages of the patient.Type: GrantFiled: November 22, 2004Date of Patent: August 25, 2009Assignee: Widemed Ltd.Inventors: Koby Todros, Amir Geva, Daniel Reisfeld
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Publication number: 20080300500Abstract: A method for diagnosis includes receiving a signal indicative of a partial pressure of CO2 in air expired by a patient during sleep. The signal is processed so as to detect a breathing-related event from a group of events consisting of apneas and hypopneas, and to classify the event as a central event or an obstructive event.Type: ApplicationFiled: May 30, 2007Publication date: December 4, 2008Applicant: WIDEMED LTD.Inventor: Daniel Reisfeld
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Publication number: 20080269583Abstract: A computer-implemented method for monitoring a patient (22) includes receiving physiological signals from the patient during sleep and processing at least one of the signals to detect a spontaneous stress event. One or more of the signals following the stress event are analyzed so as to evaluate a stress response of the patient.Type: ApplicationFiled: February 7, 2006Publication date: October 30, 2008Applicant: WIDEMED LTD.Inventor: Daniel Reisfeld
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Publication number: 20070213621Abstract: A method for diagnosis includes receiving a signal associated with blood oxygen saturation of a patient during sleep. The signal is filtered so as to eliminate signal components at frequencies equal to and greater than a respiratory frequency of the patient. The filtered signal is processed to detect a pattern corresponding to multiple cycles of periodic breathing.Type: ApplicationFiled: May 17, 2007Publication date: September 13, 2007Applicant: WIDEMED LTD.Inventors: Daniel Reisfeld, Hila Sberro
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Publication number: 20070213620Abstract: A method for diagnosis includes receiving from a sensor coupled to a body of a sleeping patient a photoplethysmograph signal. The photoplethysmograph signal is processed independently of any other physiological measurements in order to identify sleep stages of the patient.Type: ApplicationFiled: May 17, 2007Publication date: September 13, 2007Applicant: WIDEMED LTD.Inventor: Daniel Reisfeld
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Publication number: 20070213624Abstract: A method for diagnosis includes receiving from a sensor coupled to a body of a patient a photoplethysmograph signal, which is indicative of blood flow in the body. The photoplethysmograph signal is processed so as to identify at least one irregularity in a heart rhythm of the patient. A record indicating a time of occurrence of the at least one irregularity is made and processed so as to diagnose a pathological cardiac condition of the patient.Type: ApplicationFiled: May 17, 2007Publication date: September 13, 2007Applicant: WIDEMED LTD.Inventors: Daniel Reisfeld, Simon Kogan
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Publication number: 20070213622Abstract: A method for diagnosis includes receiving a signal associated with respiration of a patient during sleep, and processing the signal to detect occurrences of a pattern corresponding to multiple cycles of periodic breathing. A cumulative duration of the occurrences is computed, and a prognosis of the patient is determined based on the cumulative duration.Type: ApplicationFiled: May 17, 2007Publication date: September 13, 2007Applicant: WIDEMED LTD.Inventor: Daniel Reisfeld
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Patent number: 7225013Abstract: A method and system predicts changes of physiological/pathological states in a patient, based on sampling, processing and analyzing a plurality of aggregated noisy biomedical signals. A reference database of raw data streams or features is generated by aggregating one or more raw data streams. The features are derived from the raw data streams and represent physiological/pathological states. Each feature consists of biomedical signals of a plurality of patients, wherein several patients have one or more of the physiological/pathological states. A path, which is an individual dynamics, between physiological/pathological states is obtained according to their order of appearance. Then, a prediction of being in physiological/pathological states, or transitions to physiological/pathological states in the patient, is obtained by comparing the individual dynamics with known dynamics, obtained from prior knowledge.Type: GrantFiled: October 3, 2003Date of Patent: May 29, 2007Assignee: Widemed Ltd.Inventors: Amir Geva, Kobi Todros, Baruch Levi, David Solomon, Dan Kerem
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Publication number: 20040230105Abstract: A method and system predicts changes of physiological/pathological states in a patient, based on sampling, processing and analyzing a plurality of aggregated noisy biomedical signals. A reference database of raw data streams or features is generated by aggregating one or more raw data streams. The features are derived from the raw data streams and represent physiological/pathological states. Each feature consists of biomedical signals of a plurality of patients, wherein several patients have one or more of the physiological/pathological states. A path, which is an individual dynamics, between physiological/pathological states is obtained according to their order of appearance. Then, a prediction of being in physiological/pathological states, or transitions to physiological/pathological states in the patient, is obtained by comparing the individual dynamics with known dynamics, obtained from prior knowledge.Type: ApplicationFiled: October 3, 2003Publication date: November 18, 2004Applicant: WIDEMED LTD.Inventors: Amir Geva, Kobi Todros, Baruch Levi, David Solomon, Dan Kerem
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Publication number: 20040073098Abstract: Methods and systems that (a) adaptively segment a raw data stream(s) of different type biomedical signals; (b) assign attribute values to each segment; (c) determine an attribute domain based on a point corresponding to said segment attribute value; (d) generate a cluster set(s) in said attribute domain that includes a combination of points; (e) obtain a probability of order of appearance of each cluster point, according to its property value; (f) use said probability to update each point's property value; (g) repeat (d) through (f) while varying combinations of points in clusters according to their most updated property values and points derived from additional raw data stream adaptive segmentations; (h) associate at least one updated cluster with a normal/abnormal physiological state based on reference clusters in said domain; and (i) obtain the change probability between normal/abnormal physiological states using said probability of the order of appearance.Type: ApplicationFiled: October 2, 2003Publication date: April 15, 2004Applicant: WideMed Ltd.Inventors: Amir Geva, Koby Todros, Assaf Pressman, Baruch Levy, Aryeh Mergy