Patents by Inventor Yousufali Dalal
Yousufali Dalal 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: 11350848Abstract: Systems and methods provide for assessing the heart failure status of a patient and, more particularly, to generating a trend parameter based on a distribution of the patient's respiration rate. Systems and methods provide for detecting, using an implantable device or a patient-external device, patient respiration and computing a respiration rate based on the detected patient respiration. A distribution of the respiration rate is calculated, and a trend parameter based on the respiration rate distribution is generated. The trend parameter is indicative of a patient's heart failure status. An output signal indicative of the patient's heart failure status may be generated based on the trend parameter.Type: GrantFiled: February 11, 2013Date of Patent: June 7, 2022Assignee: Cardiac Pacemakers, Inc.Inventors: Viktoria Averina, Yi Zhang, Yousufali Dalal
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Patent number: 9943234Abstract: Systems and methods for diagnosing one or more respiration distress manifestations by implantably recognizing their occurrence and evaluating information about the same to provide an indication of present or impending worsening heart failure are discussed. Using information produced by an implantable respiration sensor circuit and an implantable physiological sensor circuit, such as at least one of a physical activity sensor circuit or a posture sensor circuit, an implantable or external processor circuit may detect a respiration disturbance and an associated subsequent arousal from stable state occurrence and thereafter evaluate over time arousal from stable state occurrences to provide the indication of present or impending worsening heart failure. In one example, information about a fluid level within a subject is used in determining the indication of worsening heart failure.Type: GrantFiled: April 17, 2007Date of Patent: April 17, 2018Assignee: Cardiac Pacemakers, Inc.Inventors: Yousufali Dalal, John D. Hatlestad, Yi Zhang, Aaron Lewicke, Jeffrey E. Stahmann
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Publication number: 20160150996Abstract: Systems and methods provide for assessing the heart failure status of a patient and, more particularly, to generating a trend parameter based on a distribution of the patient's respiration rate. Systems and methods provide for detecting, using an implantable device or a patient-external device, patient respiration and computing a respiration rate based on the detected patient respiration. A distribution of the respiration rate is calculated, and a trend parameter based on the respiration rate distribution is generated. The trend parameter is indicative of a patient's heart failure status. An output signal indicative of the patient's heart failure status may be generated based on the trend parameter.Type: ApplicationFiled: February 11, 2013Publication date: June 2, 2016Applicant: CARDIAC PACEMAKERS, INC.Inventors: Viktoria Averina, Yi Zhang, Yousufali Dalal
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Patent number: 8805493Abstract: The health state of a subject is automatically evaluated or predicted using at least one implantable device. In varying examples, the health state is determined by sensing or receiving information about at least one physiological process having a circadian rhythm whose presence, absence, or baseline change is associated with impending disease, and comparing such rhythm to baseline circadian rhythm prediction criteria. Other chronobiological rhythms beside circadian may also be used. The baseline prediction criteria may be derived using one or more past physiological process observation of the subject or population of subjects in a non-disease health state. The prediction processing may be performed by the at least one implantable device or by an external device in communication with the implantable device. Systems and methods for invoking a therapy in response to the health state, such as to prevent or minimize the consequences of predicted impending heart failure, are also discussed.Type: GrantFiled: March 19, 2013Date of Patent: August 12, 2014Assignee: Cardiac Pacemakers, Inc.Inventors: Yi Zhang, John D. Hatlestad, Gerard M. Carlson, Yousufali Dalal, Marina V. Brockway, Kent Lee, Richard O. Kuenzler, Carlos Haro, Krzysztof Z. Siejko, Abhilash Patangay
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Patent number: 8758260Abstract: A system comprising an implantable medical device (IMD) includes an implantable heart sound sensor to produce an electrical signal representative of at least one heart sound. The heart sound is associated with mechanical activity of a patient's heart. Additionally, the IMD includes a heart sound sensor interface circuit coupled to the heart sound sensor to produce a heart sound signal, and a signal analyzer circuit coupled to the heart sound sensor interface circuit. The signal analyzer circuit measures a baseline heart sound signal, and deems that an ischemic event has occurred using, among other things, a measured subsequent change in the heart sound signal from the established baseline heart sound signal.Type: GrantFiled: September 13, 2011Date of Patent: June 24, 2014Assignee: Cardiac Pacemakers, Inc.Inventors: Yi Zhang, Richard Fogoros, Carlos Haro, Yousufali Dalal, Marina V. Brockway, Krzysztof Z. Siejko
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Patent number: 8634930Abstract: Various system embodiments include a glucose control input, a low physical activity input, and a diabetic therapy delivery system adapted to respond to the glucose control input and the low physical activity input to deliver diabetic therapy. According to various embodiments, the diabetic therapy includes an anti-arrhythmia therapy, a hypertension therapy, a neural stimulation therapy adapted to reduce a risk of myocardial infarction, a neural stimulation therapy adapted to be applied after a myocardial infarction to reduce an infarct area, a neural stimulation therapy adapted to reduce a risk of sudden cardiac death, a therapy adapted to secrete insulin, or a therapy to reduce a workload of a diabetic heart. Other aspects and embodiments are provided herein.Type: GrantFiled: June 30, 2006Date of Patent: January 21, 2014Assignee: Cardiac Pacemakers, Inc.Inventors: Yousufali Dalal, Andrew P. Kramer, Lizbeth M. Mino
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Publication number: 20130289476Abstract: The health state of a subject is automatically evaluated or predicted using at least one implantable device. In varying examples, the health state is determined by sensing or receiving information about at least one physiological process having a circadian rhythm whose presence, absence, or baseline change is associated with impending disease, and comparing such rhythm to baseline circadian rhythm prediction criteria. Other chronobiological rhythms beside circadian may also be used. The baseline prediction criteria may be derived using one or more past physiological process observation of the subject or population of subjects in a non-disease health state. The prediction processing may be performed by the at least one implantable device or by an external device in communication with the implantable device. Systems and methods for invoking a therapy in response to the health state, such as to prevent or minimize the consequences of predicted impending heart failure, are also discussed.Type: ApplicationFiled: March 19, 2013Publication date: October 31, 2013Applicant: Cardiac Pacemakers, Inc.Inventors: Yi Zhang, John D. Hatlestad, Gerrard M. Carlson, Yousufali Dalal, Marina V. Brockway, Kent Lee, Richard O. Kuenzler, Carlos Haro, Krzysztof Z. Siejko, Abhilash Patangay
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Publication number: 20130226078Abstract: The health state of a subject is automatically evaluated or predicted using at least one implantable device. In varying examples, the health state is determined by sensing or receiving information about at least one physiological process having a circadian rhythm whose presence, absence, or baseline change is associated with impending disease, and comparing such rhythm to baseline circadian rhythm prediction criteria. Other chronobiological rhythms beside circadian may also be used. The baseline prediction criteria may be derived using one or more past physiological process observation of the subject or population of subjects in a non-disease health state. The prediction processing may be performed by the at least one implantable device or by an external device in communication with the implantable device. Systems and methods for invoking a therapy in response to the health state, such as to prevent or minimize the consequences of predicted impending heart failure, are also discussed.Type: ApplicationFiled: March 18, 2013Publication date: August 29, 2013Applicant: Cardiac Pacemakers, Inc.Inventors: Yi Zhang, John D. Hatlestad, Gerrard M. Carlson, Yousufali Dalal, Marina V. Brockway, Kent Lee, Richard O. Kuenzler, Carlos Haro, Krzysztof Z. Siejko, Abhilash Patangay
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Patent number: 8401636Abstract: The health state of a subject is automatically evaluated or predicted using at least one implantable device. In varying examples, the health state is determined by sensing or receiving information about at least one physiological process having a circadian rhythm whose presence, absence, or baseline change is associated with impending disease, and comparing such rhythm to baseline circadian rhythm prediction criteria. Other chronobiological rhythms beside circadian may also be used. The baseline prediction criteria may be derived using one or more past physiological process observation of the subject or population of subjects in a non-disease health state. The prediction processing may be performed by the at least one implantable device or by an external device in communication with the implantable device. Systems and methods for invoking a therapy in response to the health state, such as to prevent or minimize the consequences of predicted impending heart failure, are also discussed.Type: GrantFiled: August 15, 2011Date of Patent: March 19, 2013Assignee: Cardiac Pacemakers, Inc.Inventors: Yi Zhang, John D. Hatlestad, Gerrard M. Carlson, Yousufali Dalal, Marina V. Brockway, Kent Lee, Richard O. Kuenzler, Carlos Haro, Krzysztof Z. Siejko, Abhilash Patangay
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Patent number: 8372012Abstract: Systems and methods provide for assessing the heart failure status of a patient and, more particularly, to generating a trend parameter based on a distribution of the patient's respiration rate. Systems and methods provide for detecting, using an implantable device or a patient-external device, patient respiration and computing a respiration rate based on the detected patient respiration. A distribution of the respiration rate is calculated, and a trend parameter based on the respiration rate distribution is generated. The trend parameter is indicative of a patient's heart failure status. An output signal indicative of the patient's heart failure status may be generated based on the trend parameter.Type: GrantFiled: April 28, 2010Date of Patent: February 12, 2013Assignee: Cardiac Pacemakers, Inc.Inventors: Viktoria Averina, Yi Zhang, Yousufali Dalal
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Patent number: 8209033Abstract: A system delivers stimulation to volume receptors in the cardiovascular system to induce diuresis in a patient suffering volume overload. The system senses a volume signal indicative of a level of fluid retention in the patient's body and controls the delivery of the stimulation using the volume signal. In various embodiments, the stimulation includes one or more of electrical stimulation, which delivers electrical pulses to the volume receptors, and mechanical stimulation, which physically stretches the volume receptors.Type: GrantFiled: May 14, 2007Date of Patent: June 26, 2012Assignee: Cardiac Pacemakers, Inc.Inventors: Yunlong Zhang, James G. Bentsen, Yousufali Dalal
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Publication number: 20120004565Abstract: A system comprising an implantable medical device (IMD) includes an implantable heart sound sensor to produce an electrical signal representative of at least one heart sound. The heart sound is associated with mechanical activity of a patient's heart. Additionally, the IMD includes a heart sound sensor interface circuit coupled to the heart sound sensor to produce a heart sound signal, and a signal analyzer circuit coupled to the heart sound sensor interface circuit. The signal analyzer circuit measures a baseline heart sound signal, and deems that an ischemic event has occurred using, among other things, a measured subsequent change in the heart sound signal from the established baseline heart sound signal.Type: ApplicationFiled: September 13, 2011Publication date: January 5, 2012Inventors: Yi Zhang, Richard Fogoros, Carlos Haro, Yousufali Dalal, Marina V. Brockway, Krzysztof Z. Siejko
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Patent number: 8083682Abstract: This document discusses, among other things, systems and methods for determining sleep state, such as awake, sleeping, non-REM sleep, or REM sleep. Respiration and heart contractions are monitored. A cardio-respiratory ratio such as beats per breath is computed and used in the sleep state determination. Other information, such as heart rate variability (HRV), posture, and activity level can also be used in the sleep state determination. The sleep state information can be used to qualify or trigger storage of other physiological sensor data, or to permit remote sleep study monitoring of a subject, or to control or adjust one or more monitoring, diagnostic, or therapy algorithms, such as, for example a continuous positive airflow pressure (CPAP) device.Type: GrantFiled: July 19, 2006Date of Patent: December 27, 2011Assignee: Cardiac Pacemakers, Inc.Inventors: Yousufali Dalal, Yachuan Pu, John D. Hatlestad
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Publication number: 20110301530Abstract: The health state of a subject is automatically evaluated or predicted using at least one implantable device. In varying examples, the health state is determined by sensing or receiving information about at least one physiological process having a circadian rhythm whose presence, absence, or baseline change is associated with impending disease, and comparing such rhythm to baseline circadian rhythm prediction criteria. Other chronobiological rhythms beside circadian may also be used. The baseline prediction criteria may be derived using one or more past physiological process observation of the subject or population of subjects in a non-disease health state. The prediction processing may be performed by the at least one implantable device or by an external device in communication with the implantable device. Systems and methods for invoking a therapy in response to the health state, such as to prevent or minimize the consequences of predicted impending heart failure, are also discussed.Type: ApplicationFiled: August 15, 2011Publication date: December 8, 2011Inventors: Yi Zhang, John D. Hatlestad, Gerrard M. Carlson, Yousufali Dalal, Marina V. Brockway, Kent Lee, Richard O. Kuenzler, Carlos Haro, Krzysztof Z. Siejko, Abhilash Patangay
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Patent number: 8034000Abstract: A system comprising an implantable medical device (IMD) includes an implantable heart sound sensor to produce an electrical signal representative of at least one heart sound. The heart sound is associated with mechanical activity of a patient's heart. Additionally, the IMD includes a heart sound sensor interface circuit coupled to the heart sound sensor to produce a heart sound signal, and a signal analyzer circuit coupled to the heart sound sensor interface circuit. The signal analyzer circuit measures a baseline heart sound signal, and deems that an ischemic event has occurred using, among other things, a measured subsequent change in the heart sound signal from the established baseline heart sound signal.Type: GrantFiled: July 28, 2009Date of Patent: October 11, 2011Assignee: Cardiac Pacemakers, Inc.Inventors: Yi Zhang, Richard Fogoros, Carlos Haro, Yousufali Dalal, Marina V. Brockway, Krzysztof Z. Siejko
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Patent number: 8005540Abstract: The health state of a subject is automatically evaluated or predicted using at least one implantable device. In varying examples, the health state is determined by sensing or receiving information about at least one physiological process having a circadian rhythm whose presence, absence, or baseline change is associated with impending disease, and comparing such rhythm to baseline circadian rhythm prediction criteria. Other chronobiological rhythms beside circadian may also be used. The baseline prediction criteria may be derived using one or more past physiological process observation of the subject or population of subjects in a non-disease health state. The prediction processing may be performed by the at least one implantable device or by an external device in communication with the implantable device. Systems and methods for invoking a therapy in response to the health state, such as to prevent or minimize the consequences of predicted impending heart failure, are also discussed.Type: GrantFiled: July 14, 2010Date of Patent: August 23, 2011Assignee: Cardiac Pacemakers, Inc.Inventors: Yi Zhang, John D. Hatlestad, Gerrard M. Carlson, Yousufali Dalal, Marina V. Brockway, Kent Lee, Richard O. Kuenzler, Carlos Haro, Krzysztof Z. Siejko, Abhilash Patangay
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Patent number: 7922669Abstract: A system comprising an implantable medical device (IMD) includes an implantable heart sound sensor to produce an electrical signal representative of at least one heart sound. The heart sound is associated with mechanical activity of a patient's heart. Additionally, the IMD includes a heart sound sensor interface circuit coupled to the heart sound sensor to produce a heart sound signal, and a signal analyzer circuit coupled to the heart sound sensor interface circuit. The signal analyzer circuit measures a baseline heart sound signal, and deems that an ischemic event has occurred using, among other things, a measured subsequent change in the heart sound signal from the established baseline heart sound signal.Type: GrantFiled: June 8, 2005Date of Patent: April 12, 2011Assignee: Cardiac Pacemakers, Inc.Inventors: Yi Zhang, Richard Fogoros, Carlos Haro, Yousufali Dalal, Marina Brockway, Krzysztof Z. Siejko
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Publication number: 20100280564Abstract: The health state of a subject is automatically evaluated or predicted using at least one implantable device. In varying examples, the health state is determined by sensing or receiving information about at least one physiological process having a circadian rhythm whose presence, absence, or baseline change is associated with impending disease, and comparing such rhythm to baseline circadian rhythm prediction criteria. Other chronobiological rhythms beside circadian may also be used. The baseline prediction criteria may be derived using one or more past physiological process observation of the subject or population of subjects in a non-disease health state. The prediction processing may be performed by the at least one implantable device or by an external device in communication with the implantable device. Systems and methods for invoking a therapy in response to the health state, such as to prevent or minimize the consequences of predicted impending heart failure, are also discussed.Type: ApplicationFiled: July 14, 2010Publication date: November 4, 2010Inventors: Yi Zhang, John D. Hatlestad, Gerrard M. Carlson, Yousufali Dalal, Marina V. Brockway, Kent Lee, Richard O. Kuenzler, Carlos Haro, Krzysztof Z. Siejko, Abhilash Patangay
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Patent number: 7764996Abstract: The health state of a subject is automatically evaluated or predicted using at least one implantable device. In varying examples, the health state is determined by sensing or receiving information about at least one physiological process having a circadian rhythm whose presence, absence, or baseline change is associated with impending disease, and comparing such rhythm to baseline circadian rhythm prediction criteria. Other chronobiological rhythms beside circadian may also be used. The baseline prediction criteria may be derived using one or more past physiological process observation of the subject or population of subjects in a non-disease health state. The prediction processing may be performed by the at least one implantable device or by an external device in communication with the implantable device. Systems and methods for invoking a therapy in response to the health state, such as to prevent or minimize the consequences of predicted impending heart failure, are also discussed.Type: GrantFiled: October 31, 2006Date of Patent: July 27, 2010Assignee: Cardiac Pacemakers, Inc.Inventors: Yi Zhang, John D. Hatlestad, Gerrard M. Carlson, Yousufali Dalal, Marina V. Brockway, Kent Lee, Richard O. Kuenzler, Carlos Haro, Krzysztof Z. Siejko, Abhilash Patangay
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Publication number: 20090287106Abstract: A system comprising an implantable medical device (IMD) includes an implantable heart sound sensor to produce an electrical signal representative of at least one heart sound. The heart sound is associated with mechanical activity of a patient's heart. Additionally, the IMD includes a heart sound sensor interface circuit coupled to the heart sound sensor to produce a heart sound signal, and a signal analyzer circuit coupled to the heart sound sensor interface circuit. The signal analyzer circuit measures a baseline heart sound signal, and deems that an ischemic event has occurred using, among other things, a measured subsequent change in the heart sound signal from the established baseline heart sound signal.Type: ApplicationFiled: July 28, 2009Publication date: November 19, 2009Inventors: Yi Zhang, Richard Fogoros, Carlos Haro, Yousufali Dalal, Marina Brockway, Krzysztof Z. Siejko