Patents by Inventor Douglas R. Daum
Douglas R. Daum 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: 9931074Abstract: The presence of disordered breathing is detected using an implantable medical device. A cardiac condition is detected that is indicative of the patient's cardiac status. Based on the presence of disordered breathing and the cardiac condition, the patient is identified as suitable for a cardiac resynchronization therapy.Type: GrantFiled: August 10, 2016Date of Patent: April 3, 2018Assignee: Cardiac Pacemakers, Inc.Inventors: Quan Ni, Douglas R. Daum, Jeffrey E. Stahmann, Kent Lee, Jesse W. Hartley
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Patent number: 9561374Abstract: Various embodiments intermittently deliver a sympathetic stimulus, including deliver a sequence of stress-inducing pacing pulses adapted to increase sympathetic tone during the stress-inducing pacing. The stress-inducing pacing results in a parasympathetic reflex after the sequence of stress-inducing pacing. The embodiment further delivers neural stimulation to elicit a parasympathetic response or a sympathetic response in a coordinated manner with respect to the sequence of stress-inducing pacing pulses.Type: GrantFiled: January 6, 2014Date of Patent: February 7, 2017Assignee: Cardiac Pacemakers, Inc.Inventors: Allan C. Shuros, Shantha Arcot-Krishnamurthy, Bruce H. KenKnight, Douglas R. Daum
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Publication number: 20160345897Abstract: The presence of disordered breathing is detected using an implantable medical device. A cardiac condition is detected that is indicative of the patient's cardiac status. Based on the presence of disordered breathing and the cardiac condition, the patient is identified as suitable for a cardiac resynchronization therapy.Type: ApplicationFiled: August 10, 2016Publication date: December 1, 2016Inventors: Quan Ni, Douglas R. Daum, Jeffrey E. Stahmann, Kent Lee, Jesse W. Hartley
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Patent number: 8956295Abstract: Devices and methods for sleep detection involve the use of an adjustable threshold for detecting sleep onset and termination. A method for detecting sleep includes adjusting a sleep threshold associated with a first sleep-related signal using a second sleep-related signal. The first sleep-related signal is compared to the adjusted threshold and sleep is detected based on the comparison. The sleep-related signals may be derived from implantable or external sensors. Additional sleep-related signals may be used to confirm the sleep condition. A sleep detector device implementing a sleep detection method may be a component of an implantable pulse generator such as a pacemaker or defibrillator.Type: GrantFiled: September 9, 2013Date of Patent: February 17, 2015Assignee: Cardiac Pacemakers, Inc.Inventors: Quan Ni, Zoe Hajenga, Douglas R. Daum, Jeffrey E. Stahmann, John D. Hatlestad, Kent Lee
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Patent number: 8915741Abstract: A sleep quality assessment approach involves collecting data based on detected physiological or non-physiological patient conditions. At least one of detecting patient conditions and collecting data is performed using an implantable device. Sleep quality may be evaluated using the collected data by an implantable or patient-external sleep quality processor. One approach to sleep quality evaluation involves computing one or more summary metrics based on occurrences of movement disorders or breathing disorders during sleep.Type: GrantFiled: August 23, 2011Date of Patent: December 23, 2014Assignee: Cardiac Pacemakers, Inc.Inventors: John D. Hatlestad, Quan Ni, Jeffrey E. Stahmann, Jesse Hartley, Qingsheng Zhu, Bruce H. KenKnight, Douglas R. Daum, Kent Lee
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Publication number: 20140121718Abstract: Various embodiments intermittently deliver a sympathetic stimulus, including deliver a sequence of stress-inducing pacing pulses adapted to increase sympathetic tone during the stress-inducing pacing. The stress-inducing pacing results in a parasympathetic reflex after the sequence of stress-inducing pacing. The embodiment further delivers neural stimulation to elicit a parasympathetic response or a sympathetic response in a coordinated manner with respect to the sequence of stress-inducing pacing pulses.Type: ApplicationFiled: January 6, 2014Publication date: May 1, 2014Applicant: Cardiac Pacemakers, Inc.Inventors: Allan C. Shuros, Shantha Arcot-Krishnamurthy, Bruce H. KenKnight, Douglas R. Daum
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Patent number: 8639317Abstract: An implantable medical device such as an implantable pacemaker or implantable cardioverter/defibrillator includes a programmable sensing circuit providing for sensing of a signal approximating a surface electrocardiogram (ECG) through implanted electrodes. With various electrode configurations, signals approximating various standard surface ECG signals are acquired without the need for attaching electrodes with cables onto the skin. The various electrode configurations include, but are not limited to, various combinations of intracardiac pacing electrodes, portions of the implantable medical device contacting tissue, and electrodes incorporated onto the surface of the implantable medical device.Type: GrantFiled: October 22, 2012Date of Patent: January 28, 2014Assignee: Cardiac Pacemakers, Inc.Inventors: Aaron R. McCabe, Avram Scheiner, Geng Zhang, Douglas R. Daum, Yi Zhang, Quan Ni
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Patent number: 8626288Abstract: Various embodiments intermittently deliver a sympathetic stimulus, including deliver a sequence of stress-inducing pacing pulses adapted to increase sympathetic tone during the stress-inducing pacing. The stress-inducing pacing results in a parasympathetic reflex after the sequence of stress-inducing pacing. The embodiment further delivers neural stimulation to elicit a parasympathetic response or a sympathetic response in a coordinated manner with respect to the sequence of stress-inducing pacing pulses.Type: GrantFiled: March 4, 2009Date of Patent: January 7, 2014Assignee: Cardiac Pacemakers, Inc.Inventors: Allan C. Shuros, Shantha Arcot-Krishnamurthy, Bruce H. KenKnight, Douglas R. Daum
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Publication number: 20140005503Abstract: Devices and methods for sleep detection involve the use of an adjustable threshold for detecting sleep onset and termination. A method for detecting sleep includes adjusting a sleep threshold associated with a first sleep-related signal using a second sleep-related signal. The first sleep-related signal is compared to the adjusted threshold and sleep is detected based on the comparison. The sleep-related signals may be derived from implantable or external sensors. Additional sleep-related signals may be used to confirm the sleep condition. A sleep detector device implementing a sleep detection method may be a component of an implantable pulse generator such as a pacemaker or defibrillator.Type: ApplicationFiled: September 9, 2013Publication date: January 2, 2014Applicant: Cardiac Pacemakers, Inc.Inventors: Quan Ni, Zoe Hajenga, Douglas R. Daum, Jeffrey E. Stahmann, John D. Hatlestad, Kent Lee
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Patent number: 8535222Abstract: Devices and methods for sleep detection involve the use of an adjustable threshold for detecting sleep onset and termination. A method for detecting sleep includes adjusting a sleep threshold associated with a first sleep-related signal using a second sleep-related signal. The first sleep-related signal is compared to the adjusted threshold and sleep is detected based on the comparison. The sleep-related signals may be derived from implantable or external sensors. Additional sleep-related signals may be used to confirm the sleep condition. A sleep detector device implementing a sleep detection method may be a component of an implantable pulse generator such as a pacemaker or defibrillator.Type: GrantFiled: March 13, 2007Date of Patent: September 17, 2013Assignee: Cardiac Pacemakers, Inc.Inventors: Quan Ni, Zoe Hajenga, Douglas R. Daum, Jeff E. Stahmann, John D. Hatlestad, Kent Lee
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Patent number: 8532771Abstract: A maximum pacing rate limiter for use in adaptive rate pacing in conjunction with a cardiac rhythm management system for a heart. The maximum pacing rate limiter may function to measure an interval, termed the ERT interval, between a paced ventricular evoked response and a T-wave. The maximum pacing rate limiter may further function to maintain the ERT interval at less than a certain percentage of the total cardiac cycle. In one disclosed embodiment, a maximum pacing rate limiter calculates an ERT rate based on the detected paced ventricular evoked response and the T-wave, and the pacing rate limiter module further communicates the minimum of the ERT rate and an adaptive-rate sensor indicated rate to a pacemaker.Type: GrantFiled: May 25, 2011Date of Patent: September 10, 2013Assignee: Cardiac Pacemakers, Inc.Inventors: Douglas R. Daum, Geng Zhang, Qingsheng Zhu, Gerrard M. Carlson, Julio C. Spinelli
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Publication number: 20130046195Abstract: An implantable medical device such as an implantable pacemaker or implantable cardioverter/defibrillator includes a programmable sensing circuit providing for sensing of a signal approximating a surface electrocardiogram (ECG) through implanted electrodes. With various electrode configurations, signals approximating various standard surface ECG signals are acquired without the need for attaching electrodes with cables onto the skin. The various electrode configurations include, but are not limited to, various combinations of intracardiac pacing electrodes, portions of the implantable medical device contacting tissue, and electrodes incorporated onto the surface of the implantable medical device.Type: ApplicationFiled: October 22, 2012Publication date: February 21, 2013Inventors: Aaron R. McCabe, Avram Scheiner, Geng Zhang, Quan Ni, Douglas R. Daum, Yi Zhang
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Patent number: 8321022Abstract: An approach to providing disordered breathing therapy includes detecting disordered breathing and adapting a therapy to mitigate the disordered breathing. The therapy may be adapted to enhance therapy effectiveness, to provide therapy that reduces an impact of the therapy on the patient, or to achieve other therapeutic goals. Cardiac electrical therapy to mitigate the disordered breathing may include various cardiac pacing regimens and/or delivery of non-excitatory electrical stimulation to the heart.Type: GrantFiled: March 24, 2010Date of Patent: November 27, 2012Assignee: Cardiac Pacemakers, Inc.Inventors: Jeffrey E. Stahmann, John D. Hatlestad, Quan Ni, Jesse Hartley, Douglas R. Daum, Kent Lee
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Patent number: 8301234Abstract: An implantable medical device such as an implantable pacemaker or implantable cardioverter/defibrillator includes a programmable sensing circuit providing for sensing of a signal approximating a surface electrocardiogram (ECG) through implanted electrodes. With various electrode configurations, signals approximating various standard surface ECG signals are acquired without the need for attaching electrodes with cables onto the skin. The various electrode configurations include, but are not limited to, various combinations of intracardiac pacing electrodes, portions of the implantable medical device contacting tissue, and electrodes incorporated onto the surface of the implantable medical device.Type: GrantFiled: November 3, 2011Date of Patent: October 30, 2012Assignee: Cardiac Pacemakers, Inc.Inventors: Aaron R. McCabe, Avram Scheiner, Geng Zhang, Quan Ni, Douglas R. Daum, Yi Zhang
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Patent number: 8224445Abstract: An implantable pacemaker is provided with a far-field sensing channel which requires a reduced refractory period during the time when pacing pulses are delivered as compared with sensing channels using intra-cardiac electrodes. The far-field sensing channel may use the conductive housing of the implantable device or can and an indifferent electrode mounted on the device header as the electrodes for its differential inputs. Such a far-field sensing channel is able to sense activity occurring in either the atria or the ventricles for the purposes of arrhythmia detection and/or capture verification.Type: GrantFiled: August 8, 2011Date of Patent: July 17, 2012Assignee: Cardiac Pacemakers, Inc.Inventors: Geng Zhang, Douglas R. Daum, James O. Gilkerson, Quan Ni
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Publication number: 20120053474Abstract: An implantable medical device such as an implantable pacemaker or implantable cardioverter/defibrillator includes a programmable sensing circuit providing for sensing of a signal approximating a surface electrocardiogram (ECG) through implanted electrodes. With various electrode configurations, signals approximating various standard surface ECG signals are acquired without the need for attaching electrodes with cables onto the skin. The various electrode configurations include, but are not limited to, various combinations of intracardiac pacing electrodes, portions of the implantable medical device contacting tissue, and electrodes incorporated onto the surface of the implantable medical device.Type: ApplicationFiled: November 3, 2011Publication date: March 1, 2012Inventors: Aaron McCabe, Avram Scheiner, Geng Zhang, Quan Ni, Douglas R. Daum, Yi Zhang
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Publication number: 20110306850Abstract: A sleep quality assessment approach involves collecting data based on detected physiological or non-physiological patient conditions. At least one of detecting patient conditions and collecting data is performed using an implantable device. Sleep quality may be evaluated using the collected data by an implantable or patient-external sleep quality processor. One approach to sleep quality evaluation involves computing one or more summary metrics based on occurrences of movement disorders or breathing disorders during sleep.Type: ApplicationFiled: August 23, 2011Publication date: December 15, 2011Inventors: John D. Hatlestad, Quan Ni, Jeffrey E. Stahmann, Jesse Hartley, Qingsheng Zhu, Bruce H. KenKnight, Douglas R. Daum, Kent Lee
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Patent number: 8078276Abstract: A method and system for determining an optimum atrioventricular delay (AVD) interval and/or ventriculo-ventricular delay (VVD) intervals for delivering ventricular resynchronization pacing in an atrial tracking or atrial sequential pacing mode. Evoked response electrograms recorded at different AVD and VVD intervals are used to determine the extent of paced and intrinsic activation.Type: GrantFiled: June 30, 2009Date of Patent: December 13, 2011Assignee: Cardiac Pacemakers, Inc.Inventors: Yanting Dong, Jiang Ding, Douglas R. Daum, Scott A. Meyer, Yinghong Yu
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Publication number: 20110295136Abstract: An implantable pacemaker is provided with a far-field sensing channel which requires a reduced refractory period during the time when pacing pulses are delivered as compared with sensing channels using intra-cardiac electrodes. The far-field sensing channel may use the conductive housing of the implantable device or can and an indifferent electrode mounted on the device header as the electrodes for its differential inputs. Such a far-field sensing channel is able to sense activity occurring in either the atria or the ventricles for the purposes of arrhythmia detection and/or capture verification.Type: ApplicationFiled: August 8, 2011Publication date: December 1, 2011Inventors: Greg Zhang, Douglas R. Daum, James O. Gilkerson, Quan Ni
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Patent number: 8055332Abstract: An implantable medical device such as an implantable pacemaker or implantable cardioverter/defibrillator includes a programmable sensing circuit providing for sensing of a signal approximating a surface electrocardiogram (ECG) through implanted electrodes. With various electrode configurations, signals approximating various standard surface ECG signals are acquired without the need for attaching electrodes with cables onto the skin. The various electrode configurations include, but are not limited to, various combinations of intracardiac pacing electrodes, portions of the implantable medical device contacting tissue, and electrodes incorporated onto the surface of the implantable medical device.Type: GrantFiled: September 29, 2010Date of Patent: November 8, 2011Assignee: Cardiac Pacemakers, Inc.Inventors: Aaron R. McCabe, Avram Scheiner, Geng Zhang, Quan Ni, Douglas R. Daum, Yi Zhang