Patents by Inventor Steven R. Johnson
Steven R. Johnson 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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Patent number: 8655434Abstract: A physician's programmer for an implantable device is disclosed. The programmer includes a receiver for receiving wireless transmission data from the implantable heart monitor. A processor is configured to extract from the wireless transmission data ST-deviation histogram data as a function of heart rate. The histogram data for a particular heart rate range is shown on a display in the form of a bar chart. The histogram data for a plurality of heart rate ranges is shown in the form of a chart with multiple line plots.Type: GrantFiled: May 1, 2012Date of Patent: February 18, 2014Assignee: Angel Medical Systems, Inc.Inventors: David R. Fischell, Robert E. Fischell, Jonathan Harwood, Steven R. Johnson
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Patent number: 8630702Abstract: A system for the detection of cardiac events occurring in a human patient is provided. At least two electrodes are included in the system for obtaining an electrical signal from a patient's heart. An electrical signal processor is electrically coupled to the electrodes for processing the electrical signal and a patient alarm means is further provided and electrically coupled to the electrical signal processor. The electrical signal is acquired in the form of electrogram segments, which are categorized according to heart rate, ST segment shift and type heart rhythm (normal or abnormal). Baseline electrogram segments are tracked over time.Type: GrantFiled: November 9, 2006Date of Patent: January 14, 2014Assignee: Angel Medical Systems, Inc.Inventors: David R. Fischell, Tim A. Fischell, Jonathan Harwood, Robert E. Fischell, Steven R. Johnson, Bruce Hopenfeld, Michael Sasha John
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Patent number: 8560055Abstract: A heart rate monitor generates an ST deviation time series by employing a recursive filter that is preferably an exponential average filter whose output is a weighted sum of the then existing ST time series value and current ST deviation values of analyzable beats. Beats are detected in segments of data. ST deviation is measured for analyzable beats. The ST deviation time series is updated only if certain criteria are met. A first criterion for updating the time series is that at least half of the beats within a segment must be normal sinus rhythm beats. A second criterion for updating the time series is that (i) the average RR interval of the segment is between ¾ and 1.5 times the average RR interval of the previous segment; or (ii) both (a) the number of abnormal beats in the current segment is less than 2, and (b) the number of premature ventricular contractions within the current segment is less than 2.Type: GrantFiled: February 9, 2010Date of Patent: October 15, 2013Assignee: Angel Medical Systems, Inc.Inventors: Steven R. Johnson, Bruce Hopenfeld
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Patent number: 8512257Abstract: Disclosed is a system for the detection of cardiac events (a guardian system) that includes an implanted device called a cardiosaver, a physician's programmer and an external alarm system. The system is designed to provide early detection of cardiac events such as acute myocardial infarction or exercise induced myocardial ischemia caused by an increased heart rate or exertion. The system can also alert the patient with a less urgent alarm if a heart arrhythmia is detected. Using one or more detection algorithms, the cardiosaver can detect a change in the patient's electrogram that is indicative of a cardiac event within five minutes after it occurs and then automatically warn the patient that the event is occurring. To provide this warning, the guardian system includes an internal alarm sub-system (internal alarm means) within the cardiosaver and/or an external alarm system (external alarm means).Type: GrantFiled: July 7, 2011Date of Patent: August 20, 2013Assignee: Angel Medical Systems, Inc.Inventors: David R. Fischell, Jonathan Harwood, Robert E. Fischell, Steven R. Johnson
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Patent number: 8428704Abstract: A heart monitor is disclosed. The monitor computes ST segment deviations and stores the results in heart rate based histograms. Periodically, the monitor analyzes the histogram data to determine heart rate dependent acute ischemia detection thresholds. If the statistical distribution associated with a heart rate range is insufficient, the threshold for that heart rate range is set as a function of the threshold for a neighboring heart rate range. Thresholds are also increased for heart rate ranges associated with statistical distributions that are sufficient but that have a relatively small number of entries.Type: GrantFiled: October 28, 2010Date of Patent: April 23, 2013Assignee: Angel Medical Systems, Inc.Inventors: Steven R. Johnson, Bruce Hopenfeld
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Publication number: 20130090940Abstract: Methods and systems related to wellcare management are disclosed. The methods comprise enrolling wellcare providers and consumers, offering wellcare plans, and providing automated payment processing and collection in connection with the wellcare plans. The methods also allow the wellcare management systems to interface with the wellcare provider's practice management software administered by a third party. Preferably, the wellcare plan providers are veterinarians, particularly independent veterinarians. Systems employing the methods over one or more computer networks are also disclosed, as are articles comprising computer readable media.Type: ApplicationFiled: October 11, 2011Publication date: April 11, 2013Applicant: Nestec S.A.Inventors: David B. Goodnight, Steven R. Johnson, Thomas J. Blair
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Patent number: 8396542Abstract: A heart monitor is disclosed. The monitor computes ST segment deviations and stores the results in heart rate based histograms. Periodically, the monitor analyzes the histogram data to determine a median value of ST deviation. Subsequently, beats are excluded from the computation of the time series if their ST deviations both varies too far from the long term median value and varies too far from the then current time series value.Type: GrantFiled: October 28, 2010Date of Patent: March 12, 2013Assignee: Angel Medical Systems, Inc.Inventors: Steven R. Johnson, Bruce Hopenfeld
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Publication number: 20130030148Abstract: The present invention relates to a process for the large-scale synthesis of (Aib8,35)hGLP-1(7-36)-NH2 (SEQ ED NO:2), i.e., His-Aib-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly-Gb-Ala-Ala-Lys-Glu-Phe-Ile-Ala-Trp-Leu-Val-Lys-Aib-Arg-NH2 (SEQ ID NO:2), which comprises solid-phase Fmoc-chemistry.Type: ApplicationFiled: September 22, 2009Publication date: January 31, 2013Inventors: Zheng Xin Dong, Thomas Ciaran Loughman, Fionn Hurley, Steven R. Johnson
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Patent number: 8265740Abstract: Disclosed is a system for the detection of cardiac events that includes an implanted device called a cardiosaver, a physician's programmer and an external alarm system. The system is designed to provide early detection of cardiac events such as acute myocardial infarction or exercise induced myocardial ischemia caused by an increased heart rate or exertion. The system can also alert the patient with a less urgent alarm if a heart arrhythmia is detected. Using different algorithms, the cardiosaver can detect a change in the patient's electrogram that is indicative of a cardiac event within five minutes after it occurs and then automatically warn the patient that the event is occurring. To provide this warning, the system includes an internal alarm sub-system (internal alarm means) within the cardiosaver and/or an external alarm system (external alarm means) which are activated after the ST segment of the electrogram exceeds a preset threshold.Type: GrantFiled: June 3, 2009Date of Patent: September 11, 2012Assignee: Angel Medical Systems, Inc.Inventors: David R. Fischell, Tim A. Fischell, Jonathan Harwood, Robert E. Fischell, Steven R. Johnson
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Publication number: 20120215089Abstract: A physician's programmer for an implantable device is disclosed. The programmer includes a receiver for receiving wireless transmission data from the implantable heart monitor. A processor is configured to extract from the wireless transmission data ST-deviation histogram data as a function of heart rate. The histogram data for a particular heart rate range is shown on a display in the form of a bar chart. The histogram data for a plurality of heart rate ranges is shown in the form of a chart with multiple line plots.Type: ApplicationFiled: May 1, 2012Publication date: August 23, 2012Applicant: ANGEL MEDICAL SYSTEMS, INC.Inventors: DAVID R. FISCHELL, ROBERT E. FISCHELL, JONATHAN HARWOOD, STEVEN R. JOHNSON
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Patent number: 8244338Abstract: A system for cardiac event detection over varying time scales includes implanted electrical leads forming a portion of an implanted cardiotracker and external equipment including external alarm mechanisms and a physicians programmer. The cardiac event detection system monitors the degradation of a patient's cardiovascular condition from one or more causes. A processor computes the electrical signals of a heart signal parameter's average value over a time period for a multiplicity of heart rate ranges. The electrical signals are stored and information transmitted to external equipment.Type: GrantFiled: February 10, 2009Date of Patent: August 14, 2012Assignee: Angel Medical Systems, Inc.Inventors: David R. Fischell, Robert E. Fischell, Jonathan Harwood, Steven R. Johnson
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Patent number: 8224430Abstract: A system for the detection of cardiac events occurring in a human patient is provided. At least two electrodes are included in the system for obtaining an electrical signal from a patient's heart. An electrical signal processor is electrically coupled to the electrodes for processing the electrical signal and a patient alarm means is further provided and electrically coupled to the electrical signal processor. The electrical signal is acquired in the form of electrogram segments, which are categorized according to heart rate, ST segment shift and type heart rhythm (normal or abnormal). Baseline electrogram segments are tracked over time.Type: GrantFiled: September 28, 2009Date of Patent: July 17, 2012Assignee: Angel Medical Systems, Inc.Inventors: David R. Fischell, Tim A. Fischell, Jonathan Harwood, Robert E. Fischell, Steven R. Johnson, Bruce Hopenfeld, Michael Sasha John
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Patent number: 8170653Abstract: A system for the detection of cardiac events occurring in a human patient is provided. At least two electrodes are included in the system for obtaining an electrical signal from a patient's heart. An electrical signal processor is electrically coupled to the electrodes for processing the electrical signal and a patient alarm means is further provided and electrically coupled to the electrical signal processor. The electrical signal is acquired in the form of electrogram segments, which are categorized according to heart rate, ST segment shift and type heart rhythm (normal or abnormal). Baseline electrogram segments are tracked over time.Type: GrantFiled: February 6, 2009Date of Patent: May 1, 2012Assignee: Angel Medical Systems, Inc.Inventors: David R. Fischell, Jonathan Harwood, Steven R. Johnson, David Keenan
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Publication number: 20120053478Abstract: A heart monitor is disclosed. The monitor computes ST segment deviations and stores the results in heart rate based histograms. Periodically, the monitor analyzes the histogram data to determine heart rate dependent acute ischemia detection thresholds. If the statistical distribution associated with a heart rate range is insufficient, the threshold for that heart rate range is set as a function of the threshold for a neighboring heart rate range. Thresholds are also increased for heart rate ranges associated with statistical distributions that are sufficient but that have a relatively small number of entries.Type: ApplicationFiled: October 28, 2010Publication date: March 1, 2012Applicant: ANGEL MEDICAL SYSTEMS, INC.Inventors: STEVEN R. JOHNSON, BRUCE HOPENFELD
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Publication number: 20120053473Abstract: A heart monitor is disclosed. The monitor computes ST segment deviations and stores the results in heart rate based histograms. Periodically, the monitor analyzes the histogram data to determine a median value of ST deviation. Subsequently, beats are excluded from the computation of the time series if their ST deviations both varies too far from the long term median value and varies too far from the then current time series value.Type: ApplicationFiled: October 28, 2010Publication date: March 1, 2012Applicant: ANGEL MEDICAL SYSTEMS, INC.Inventors: STEVEN R. JOHNSON, BRUCE HOPENFELD
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Patent number: 8113340Abstract: A modular member for a conveyer belt is provided that includes an elongated main base, at least one attaching rod and a plurality of hooks. The at least one attaching rod is coupled proximate a first side of the main base. The plurality of aligned hooks are coupled proximate a second side of the main base. Each hook includes a slot defined by an inner surface. The slot of each hook is configured to receive an attaching rod of another modular member. The inner surface that defines the slot of at least one hook has an attaching rod relief cutout section. The attaching rod relief cutout section limits wear between the attaching rod of another modular member that is received in the slot of the at least one hook and the inner surface of the slot of the at least one hook.Type: GrantFiled: November 5, 2009Date of Patent: February 14, 2012Assignee: Hormel Foods CorporationInventors: Marshall D. Smith, Steven R. Johnson
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Publication number: 20110270101Abstract: Disclosed is a system for the detection of cardiac events (a guardian system) that includes an implanted device called a cardiosaver, a physician's programmer and an external alarm system. The system is designed to provide early detection of cardiac events such as acute myocardial infarction or exercise induced myocardial ischemia caused by an increased heart rate or exertion. The system can also alert the patient with a less urgent alarm if a heart arrhythmia is detected. Using one or more detection algorithms, the cardiosaver can detect a change in the patient's electrogram that is indicative of a cardiac event within five minutes after it occurs and then automatically warn the patient that the event is occurring. To provide this warning, the guardian system includes an internal alarm sub-system (internal alarm means) within the cardiosaver and/or an external alarm system (external alarm means).Type: ApplicationFiled: July 7, 2011Publication date: November 3, 2011Applicant: ANGEL MEDICAL SYSTEMS, INC.Inventors: DAVID R. FISCHELL, JONATHAN HARWOOD, ROBERT E. FISCHELL, STEVEN R. JOHNSON
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Patent number: 8038624Abstract: Disclosed is a system for the detection of cardiac events (a guardian system) that includes an implanted device called a cardiosaver, a physician's programmer and an external alarm system. The system is designed to provide early detection of cardiac events such as acute myocardial infarction or exercise induced myocardial ischemia caused by an increased heart rate or exertion. The system can also alert the patient with a less urgent alarm if a heart arrhythmia is detected. Using one or more detection algorithms, the cardiosaver can detect a change in the patient's electrogram that is indicative of a cardiac event within five minutes after it occurs and then automatically warn the patient that the event is occurring. To provide this warning, the guardian system includes an internal alarm sub-system (internal alarm means) within the cardiosaver and/or an external alarm system (external alarm means).Type: GrantFiled: August 18, 2003Date of Patent: October 18, 2011Assignee: Angel Medical Systems, Inc.Inventors: David R. Fischell, Tim A. Fischell, Jonathan Harwood, Robert E. Fischell, Steven R. Johnson
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Patent number: 8024028Abstract: Disclosed is a “tracker system” that includes implanted electrical leads which are part of an implanted cardiotracker plus external equipment that includes external alarm means and a physician's programmer. The tracker system is designed to monitor the degradation of a patient's cardiovascular condition from one or more causes. These causes include the rejection of a transplanted heart and/or the progression of a stenosis in a coronary artery. As one or more stenoses in a coronary artery become progressively more narrow thereby causing reduced blood flow to the heart muscle coronary circulation, the tracker system can alert the patient by either or both internal and/or external alarm means to take the appropriate medical action. The physician's programmer can be used to display histograms of key heart signal parameters that are indicative of the patient's cardiovascular condition.Type: GrantFiled: February 26, 2009Date of Patent: September 20, 2011Assignee: Angel Medical Systems, Inc.Inventors: David R. Fischell, Robert E. Fischell, Jonathan Harwood, Steven R. Johnson
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Publication number: 20110196246Abstract: A heart monitor is disclosed. The monitor computes ST segment deviation as the difference in the value of an electrocardiogram signal at the ST and PQ points of a heartbeat. The ST point is found based on slope criteria and temporal criteria. The maximum (positive) slope of the QRS (maxQRS) is located. Within a preset window after the maxQRS point, the processor searches for a sample at which the second finite difference is less than a threshold that is a function of average QRS amplitude. If such a qualifying sample is found, the processor examines its location relative to the location of an adaptive window that is centered on a sample that is an adaptively determined distance from the peak of the R wave. If the qualifying point is within the adaptive window, it is chosen as the ST point. If the qualifying point is after the adaptive window, the ST point is set at the end of the adaptive window.Type: ApplicationFiled: March 11, 2010Publication date: August 11, 2011Applicant: ANGEL MEDICAL SYSTEMS INC.Inventor: Steven R. Johnson