Patents by Inventor Alon Rappaport
Alon Rappaport has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20140358016Abstract: A method of estimating blood flow in a brain, comprising: a) causing currents to flow inside the head by producing electric fields inside the head; b) measuring at least changes in the electric fields and the currents; c) estimating changes in the blood volume of the head, using the measurements of the electric fields and the currents, where the current are produced in children or using electrodes at or near holes in the skull. Optionally, the configuration is selected to focus the flow of current to be inside the brain to a significant degree.Type: ApplicationFiled: March 5, 2014Publication date: December 4, 2014Inventors: Aharon Shapira, Alon Rappaport, Shlomi Ben-Ari
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Patent number: 8702615Abstract: A method of estimating blood flow in a brain, comprising: a) causing currents to flow inside the head by producing electric fields inside the head; b) measuring at least changes in the electric fields and the currents; c) estimating changes in the blood volume of the head, using the measurements of the electric fields and the currents, where the current are produced in children or using electrodes at or near holes in the skull. Optionally, the configuration is selected to focus the flow of current to be inside the brain to a significant degree.Type: GrantFiled: June 15, 2005Date of Patent: April 22, 2014Assignee: Osran Medical Technologies, Ltd.Inventors: Aharon Shapira, Alon Rappaport, Shlomi Ben-Ari
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Publication number: 20130109979Abstract: A method of estimating at least one intracranial hemodynamic parameter in a subject, the method comprising: a) obtaining data of changes in electrical impedance across the subject's head as a function of time; b) analyzing the data; and c) estimating one or more of intracranial pressure, cerebral blood volume, and a factor related to at least one of cerebral perfusion pressure and a mean transit time through cerebral capillaries.Type: ApplicationFiled: May 31, 2012Publication date: May 2, 2013Inventors: Ben Zion Poupko, Yosef Reichman, Alon Rappaport, Shlomi Ben-Ari
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Patent number: 8211031Abstract: A method of estimating at least one intracranial hemodynamic parameter in a subject, the method comprising: a) obtaining data of changes in electrical impedance across the subject's head as a function of time; b) analyzing the data; and c) estimating one or more of intracranial pressure, cerebral blood volume, and a factor related to at least one of cerebral perfusion pressure and a mean transit time through cerebral capillaries.Type: GrantFiled: December 14, 2006Date of Patent: July 3, 2012Assignee: Orsan Medical Technologies Ltd.Inventors: Ben Zion Poupko, Yosef Reichman, Alon Rappaport, Shlomi Ben-Ari
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Patent number: 8187197Abstract: A method of estimating cerebral blood flow includes obtaining a measure of time-varying blood volume in the head, using an impedance plethysmography (102 and 104), obtaining a measure of time-varying blood volume in the scalp, and using the time-varying blood volume in the head and scalp to estimate cerebral blood flow.Type: GrantFiled: June 15, 2005Date of Patent: May 29, 2012Assignee: Orsan Medical Technologies Ltd.Inventors: Aharon Shapira, Alon Rappaport, Shlomi Ben-Ari, Yosef Reichman, Ofer Barnea
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Publication number: 20120022349Abstract: A method of evaluating patients suspected of suffering from an acute stroke, the method comprising: a) obtaining signals of impedance plethysmography (IPG), photoplethysmography (PPG) or both, in the patient; b) processing the one or more signals to obtain one or more measures of cerebral hemodynamics of the patient; and c) applying a rule to match said measures to a disease indication or choice of therapy or both, for the patient.Type: ApplicationFiled: October 7, 2009Publication date: January 26, 2012Applicant: Orsan Medical Technologies Ltd.Inventors: Ben Zion Poupko, Alon Rappaport, Shlomi Ben-Ari
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Publication number: 20110251503Abstract: A method of estimating blood flow in the brain, comprising: a) causing currents to flow inside the head by producing electric fields inside the head; b) measuring at least changes in the electric fields and the currents; and c) estimating changes in the blood volume of the head, using the measurements of the electric fields and the currents.Type: ApplicationFiled: June 22, 2011Publication date: October 13, 2011Applicant: Orsan Medical Technologies Ltd.Inventors: Shlomi BEN-ARI, Alon Rappaport, Aharon Shapira
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Publication number: 20110201950Abstract: A method of monitoring an acute stroke patient, comprising: a) obtaining signals of impedance plethysmography (IPG), photoplethysmography (PPG) or both, in the patient, at least once an hour, for at least six hours; b) processing the one or more signals to obtain one or more measures of cerebral hemodynamics of the patient; c) applying a rule about alerting or not alerting medical personnel based on any of values, amount of change, and direction and rate of change of the measures.Type: ApplicationFiled: October 7, 2009Publication date: August 18, 2011Applicant: Orsan Medical Technologies Ltd.Inventors: Ben Zion Poupko, Alon Rappaport, Shlomi Ben-Ari
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Patent number: 7998080Abstract: A method of estimating blood flow in the brain, comprising: a) causing currents to flow inside the head by producing electric fields inside the head; b) measuring at least changes in the electric fields and the currents; and c) estimating changes in the blood volume of the head, using the measurements of the electric fields and the currents.Type: GrantFiled: July 15, 2004Date of Patent: August 16, 2011Assignee: Orsan Medical Technologies Ltd.Inventors: Shlomi Ben-Ari, Alon Rappaport, Aharon Shapira
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Publication number: 20110196245Abstract: A method of finding an indication of a degree of cerebro-vascular bilateral asymmetry in a subject, comprising: a) measuring a first impedance waveform and a second impedance waveform of the subject's head as functions of time, in each case by finding a potential difference between two voltage electrodes associated with passing a given injected current through the head between at least two current electrodes, wherein in each case the voltage electrodes are located asymmetrically on the head, or the current is injected asymmetrically into the head, or both, and wherein the locations of the voltage electrodes and the distribution of current injection in measuring the second impedance waveform are minor images of what they are in measuring the first impedance waveform; and b) finding the indication of the degree of bilateral asymmetry from a difference between characteristics of the first and second impedance waveforms.Type: ApplicationFiled: October 7, 2009Publication date: August 11, 2011Applicant: Orsan Medical Technologies Ltd.Inventors: Ben Zion Poupko, Alon Rappaport, Shlomi Ben-Ari, Boaz Shpigelman
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Publication number: 20080275352Abstract: A method of estimating cerebral blood flow includes obtaining a measure of time-varying blood volume in the head, using an impedance plethysmography (102 and 104), obtaining a measure of time-varying blood volume in the scalp, and using the time-varying blood volume in the head and scalp to estimate cerebral blood flow.Type: ApplicationFiled: December 5, 2005Publication date: November 6, 2008Inventors: Aharon Shapira, Alon Rappaport, Shlomi Ben-Ari, Yosef Reichman, Ofer Barnea
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Publication number: 20080200787Abstract: A method of estimating blood flow in a brain, comprising: a) causing currents to flow inside the head by producing electric fields inside the head; b) measuring at least changes in the electric fields and the currents; c) estimating changes in the blood volume of the head, using the measurements of the electric fields and the currents, where the current are produced in children or using electrodes at or near holes in the skull. Optionally, the configuration is selected to focus the flow of current to be inside the brain to a significant degree.Type: ApplicationFiled: June 15, 2005Publication date: August 21, 2008Applicant: Orsan Medical Technologies Ltd.Inventors: Aharon Shapira, Alon Rappaport, Shlomi Ben-Ari
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Publication number: 20070287899Abstract: A method of estimating at least one intracranial hemodynamic parameter in a subject, the method comprising: a) obtaining data of changes in electrical impedance across the subject's head as a function of time; b) analyzing the data; and c) estimating one or more of intracranial pressure, cerebral blood volume, and a factor related to at least one of cerebral perfusion pressure and a mean transit time through cerebral capillaries.Type: ApplicationFiled: December 14, 2006Publication date: December 13, 2007Applicant: Orsan Medical technologies Ltd.Inventors: Ben Poupko, Yosef Reichman, Alon Rappaport, Shlomi Ben-Ari
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Publication number: 20050054939Abstract: A method of estimating blood flow in the brain, comprising: a) causing currents to flow inside the head by producing electric fields inside the head; b) measuring at least changes in the electric fields and the currents; and c) estimating changes in the blood volume of the head, using the measurements of the electric fields and the currents.Type: ApplicationFiled: July 15, 2004Publication date: March 10, 2005Applicant: Orsan Medical Equipment Ltd.Inventors: Shlomi Ben-Ari, Alon Rappaport, Aharon Shapira