Patents by Inventor Daniel L. Hansen
Daniel L. Hansen 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: 20230102092Abstract: Techniques and devices for implementing the techniques for adjusting atrial arrhythmia detection based on analysis of one or more P-wave sensing windows associated with one or more R-waves. An implantable medical device may determine signal characteristics of the cardiac signal within the P-wave sensing window, determine whether the cardiac signal within the sensing window corresponds to a P-wave based on the determined signal characteristics, determine a signal to noise ratio of the cardiac signal within the sensing window, update the arrhythmia score when the P-wave is identified in the sensing window and the determined signal to noise ratio satisfies a signal to noise threshold.Type: ApplicationFiled: December 5, 2022Publication date: March 30, 2023Inventors: Shantanu Sarkar, Daniel L. Hansen, Grant A. Neitzell, Jerry D. Reiland, Ryan D. Wyszynski
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Patent number: 11517242Abstract: Techniques and devices for implementing the techniques for adjusting atrial arrhythmia detection based on analysis of one or more P-wave sensing windows associated with one or more R-waves. An implantable medical device may determine signal characteristics of the cardiac signal within the P-wave sensing window, determine whether the cardiac signal within the sensing window corresponds to a P-wave based on the determined signal characteristics, determine a signal to noise ratio of the cardiac signal within the sensing window, update the arrhythmia score when the P-wave is identified in the sensing window and the determined signal to noise ratio satisfies a signal to noise threshold.Type: GrantFiled: December 2, 2019Date of Patent: December 6, 2022Assignee: Medtronic, Inc.Inventors: Shantanu Sarkar, Daniel L. Hansen, Grant A. Neitzell, Jerry D. Reiland, Ryan Wyszynski
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Publication number: 20210267527Abstract: In situations in which an implantable medical device (e.g., a subcutaneous ICD) is co-implanted with a leadless pacing device (LPD), it may be important that the subcutaneous ICD knows when the LPD is delivering pacing, such as anti-tachycardia pacing (ATP). Techniques are described herein for detecting, with the ICD and based on the sensed electrical signal, pacing pulses and adjusting operation to account for the detected pulses, e.g., blanking the sensed electrical signal or modifying a tachyarrhythmia detection algorithm. In one example, the ICD includes a first pace pulse detector configured to obtain a sensed electrical signal and analyze the sensed electrical signal to detect a first type of pulses having a first set of characteristics and a second pace pulse detector configured to obtain the sensed electrical signal and analyze the sensed electrical signal to detect a second type of pulses having a second set of characteristics.Type: ApplicationFiled: May 14, 2021Publication date: September 2, 2021Inventors: James D. REINKE, Xusheng ZHANG, Vinod SHARMA, Vladimir P. NIKOLSKI, Michael B. TERRY, Scott A. HARELAND, Daniel L. HANSEN, Donna M. SALMI
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Patent number: 11020038Abstract: In situations in which an implantable medical device (e.g., a subcutaneous ICD) is co-implanted with a leadless pacing device (LPD), it may be important that the subcutaneous ICD knows when the LPD is delivering pacing, such as anti-tachycardia pacing (ATP). Techniques are described herein for detecting, with the ICD and based on the sensed electrical signal, pacing pulses and adjusting operation to account for the detected pulses, e.g., blanking the sensed electrical signal or modifying a tachyarrhythmia detection algorithm. In one example, the ICD includes a first pace pulse detector configured to obtain a sensed electrical signal and analyze the sensed electrical signal to detect a first type of pulses having a first set of characteristics and a second pace pulse detector configured to obtain the sensed electrical signal and analyze the sensed electrical signal to detect a second type of pulses having a second set of characteristics.Type: GrantFiled: February 19, 2019Date of Patent: June 1, 2021Assignee: Medtronic, Inc.Inventors: James D. Reinke, Xusheng Zhang, Vinod Sharma, Vladimir P. Nikolski, Michael B. Terry, Scott A. Hareland, Daniel L. Hansen, Donna M. Salmi
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Publication number: 20200100694Abstract: Techniques and devices for implementing the techniques for adjusting atrial arrhythmia detection based on analysis of one or more P-wave sensing windows associated with one or more R-waves. An implantable medical device may determine signal characteristics of the cardiac signal within the P-wave sensing window, determine whether the cardiac signal within the sensing window corresponds to a P-wave based on the determined signal characteristics, determine a signal to noise ratio of the cardiac signal within the sensing window, update the arrhythmia score when the P-wave is identified in the sensing window and the determined signal to noise ratio satisfies a signal to noise threshold.Type: ApplicationFiled: December 2, 2019Publication date: April 2, 2020Inventors: Shantanu SARKAR, Daniel L. HANSEN, Grant A. NEITZELL, Jerry D. REILAND, Ryan WYSZYNSKI
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Patent number: 10492706Abstract: Techniques and devices for implementing the techniques for adjusting atrial arrhythmia detection based on analysis of one or more P-wave sensing windows associated with one or more R-waves. An implantable medical device may determine signal characteristics of the cardiac signal within the P-wave sensing window, determine whether the cardiac signal within the sensing window corresponds to a P-wave based on the determined signal characteristics, determine a signal to noise ratio of the cardiac signal within the sensing window, update the arrhythmia score when the P wave is identified in the sensing window and the determined signal to noise ratio satisfies a signal to noise threshold.Type: GrantFiled: February 18, 2016Date of Patent: December 3, 2019Assignee: Medtronic, Inc.Inventors: Shantanu Sarkar, Daniel L. Hansen, Grant A. Neitzell, Jerry D. Reiland, Ryan Wyszynski
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Patent number: 10448855Abstract: In situations in which an implantable medical device (IMD) (e.g., an extravascular ICD) is co-implanted with a leadless pacing device (LPD), it may be important that the IMD knows when the LPD is delivering pacing, such as anti-tachycardia pacing (ATP). Techniques are described herein for detecting, with the IMD and based on the sensed electrical signal, pacing pulses and adjusting operation to account for the detected pulses, e.g., blanking the sensed electrical signal or modifying a tachyarrhythmia detection algorithm. In one example, the IMD includes a pace pulse detector that detects, based on the processing of sensed electrical signals, delivery of a pacing pulse from a second implantable medical device and blank, based on the detection of the pacing pulse, the sensed electrical signal to remove the pacing pulse from the sensed electrical signal.Type: GrantFiled: April 15, 2015Date of Patent: October 22, 2019Assignee: Medtronic, Inc.Inventors: James D. Reinke, Xusheng Zhang, Vinod Sharma, Vladimir P. Nikolski, Michael B. Terry, Scott A. Hareland, Daniel L. Hansen, Donna M. Salmi
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Publication number: 20190183374Abstract: In situations in which an implantable medical device (e.g., a subcutaneous ICD) is co-implanted with a leadless pacing device (LPD), it may be important that the subcutaneous ICD knows when the LPD is delivering pacing, such as anti-tachycardia pacing (ATP). Techniques are described herein for detecting, with the ICD and based on the sensed electrical signal, pacing pulses and adjusting operation to account for the detected pulses, e.g., blanking the sensed electrical signal or modifying a tachyarrhythmia detection algorithm. In one example, the ICD includes a first pace pulse detector configured to obtain a sensed electrical signal and analyze the sensed electrical signal to detect a first type of pulses having a first set of characteristics and a second pace pulse detector configured to obtain the sensed electrical signal and analyze the sensed electrical signal to detect a second type of pulses having a second set of characteristics.Type: ApplicationFiled: February 19, 2019Publication date: June 20, 2019Inventors: James D. REINKE, Xusheng ZHANG, Vinod SHARMA, Vladimir P. NIKOLSKI, Michael B. TERRY, Scott A. HARELAND, Daniel L. HANSEN, Donna M. SALMI
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Patent number: 10226197Abstract: In situations in which an implantable medical device (e.g., a subcutaneous ICD) is co-implanted with a leadless pacing device (LPD), it may be important that the subcutaneous ICD knows when the LPD is delivering pacing, such as anti-tachycardia pacing (ATP). Techniques are described herein for detecting, with the ICD and based on the sensed electrical signal, pacing pulses and adjusting operation to account for the detected pulses, e.g., blanking the sensed electrical signal or modifying a tachyarrhythmia detection algorithm. In one example, the ICD includes a first pace pulse detector configured to obtain a sensed electrical signal and analyze the sensed electrical signal to detect a first type of pulses having a first set of characteristics and a second pace pulse detector configured to obtain the sensed electrical signal and analyze the sensed electrical signal to detect a second type of pulses having a second set of characteristics.Type: GrantFiled: April 15, 2015Date of Patent: March 12, 2019Assignee: Medtronic, Inc.Inventors: James D. Reinke, Xusheng Zhang, Vinod Sharma, Vladimir P. Nikolski, Michael B. Terry, Scott A. Hareland, Daniel L. Hansen, Donna M. Salmi
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Patent number: 9962102Abstract: A method and implantable medical device for determining a flutter event in response to a cardiac signal that includes sensing the cardiac signal, determining a sensing window in response to the sensed cardiac signal, the sensing window having a first portion and a second portion. A first derivative signal and a second derivative signal are determined in response to the sensed cardiac signal within the first portion and the second portion of the sensing window, and a sum of amplitudes of the second derivative signal within one or both of the first portion and the second portion of the sensing window is determined, and the flutter event is determined in response to the determined sum of amplitudes.Type: GrantFiled: April 24, 2015Date of Patent: May 8, 2018Assignee: Medtronic, Inc.Inventors: Shantanu Sarkar, Daniel L Hansen, Grant A Neitzell
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Patent number: 9936890Abstract: An implantable medical device and method for determining an atrial arrhythmia event that includes a cardiac sensing device comprising a housing having circuitry positioned therein, a plurality of electrodes electrically coupled to the circuitry to sense a cardiac signal, and a processor configured to generate an initial detection of an atrial arrhythmia event in response to an atrial arrhythmia threshold, determine whether a P-wave occurs during the initial detection, determine an adaptive threshold in response to the P-wave being detected, adjust the atrial arrhythmia threshold in response to the adaptive threshold, and generate a subsequent initial detection of an atrial arrhythmia event using the adjusted atrial arrhythmia threshold.Type: GrantFiled: October 29, 2015Date of Patent: April 10, 2018Assignee: Medtronic, Inc.Inventors: Shantanu Sarkar, Daniel L Hansen, Grant A Neitzell, Jerry D Reiland, Ryan Wyszynski
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Publication number: 20180028082Abstract: Techniques and devices for implementing the techniques for adjusting atrial arrhythmia detection based on analysis of one or more P-wave sensing windows associated with one or more R-waves. An implantable medical device may determine signal characteristics of the cardiac signal within the P-wave sensing window, determine whether the cardiac signal within the sensing window corresponds to a P-wave based on the determined signal characteristics, determine a signal to noise ratio of the cardiac signal within the sensing window, update the arrhythmia score when the P wave is identified in the sensing window and the determined signal to noise ratio satisfies a signal to noise threshold.Type: ApplicationFiled: February 18, 2016Publication date: February 1, 2018Applicant: Medtronic, Inc.Inventors: Shantanu SARKAR, Daniel L. HANSEN, Grant A. NEITZELL, Jerry D. REILAND, Ryan WYSZYNSKI
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Patent number: 9675269Abstract: A method and implantable medical device for determining noise in response to a cardiac signal that includes sensing the cardiac signal, determining a sensing window in response to the sensed cardiac signal, the sensing window comprising a first portion and a second portion, determining a first derivative signal in response to the sensed cardiac signal within only one of the first portion and the second portion of the sensing window, determining a second derivative signal in response to the sensed cardiac signal within the one of the first portion and the second portion of the sensing window, determining whether an amplitude of the second derivative signal satisfies an amplitude threshold, and determining noise in response to the amplitude of the second derivative signal satisfying the amplitude threshold.Type: GrantFiled: April 24, 2015Date of Patent: June 13, 2017Assignee: Medtronic, Inc.Inventors: Shantanu Sarkar, Daniel L Hansen, Grant A Neitzell
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Patent number: 9603543Abstract: A method and implantable medical device for determining an atrial arrhythmia event that includes sensing a cardiac signal, determining an atrial arrhythmia score for identifying the arrhythmia event in response to the sensed cardiac signal, determining a sensing window in response to the sensed cardiac signal, the sensing window having a first portion and a second portion, determining signal characteristics of the sensed cardiac signal within the first portion and within the second portion, determining whether the sensed cardiac signal within the first portion and within the second portion corresponds to a P-wave in response to the determined signal characteristics, determining whether a signal to noise ratio of the sensed cardiac signal within the first portion and the second portion of the sensing window is satisfied, determining whether to update the arrhythmia score in response to the determined P-wave and the determined signal to noise ratio, and determining whether to delivery an arrhythmia therapy in rType: GrantFiled: April 24, 2015Date of Patent: March 28, 2017Assignee: Medtronic, Inc.Inventors: Shantanu Sarkar, Daniel L Hansen, Grant A Neitzell, Jerry D Reiland, Ryan Wyszynski
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Patent number: 9486155Abstract: A method and medical device for determining a P-wave of a cardiac signal that includes sensing the cardiac signal, determining a P-wave sensing window in response to the sensed cardiac signal, the P-wave sensing window having a first portion and a second portion, determining signal characteristics of the sensed cardiac signal within the first portion and within the second portion, comparing the determined signal characteristics, and determining the P-wave in response to the comparing.Type: GrantFiled: April 24, 2015Date of Patent: November 8, 2016Assignee: Medtronic, Inc.Inventors: Shantanu Sarkar, Daniel L Hansen, Grant A Neitzell
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Publication number: 20160235315Abstract: A method and medical device for determining a P-wave of a cardiac signal that includes sensing the cardiac signal, determining a P-wave sensing window in response to the sensed cardiac signal, the P-wave sensing window having a first portion and a second portion, determining signal characteristics of the sensed cardiac signal within the first portion and within the second portion, comparing the determined signal characteristics, and determining the P-wave in response to the comparing.Type: ApplicationFiled: April 24, 2015Publication date: August 18, 2016Inventors: Shantanu Sarkar, Daniel L. Hansen, Grant A. Neitzell
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Publication number: 20160235317Abstract: An implantable medical device and method for determining an atrial arrhythmia event that includes a cardiac sensing device comprising a housing having circuitry positioned therein, a plurality of electrodes electrically coupled to the circuitry to sense a cardiac signal, and a processor configured to generate an initial detection of an atrial arrhythmia event in response to an atrial arrhythmia threshold, determine whether a P-wave occurs during the initial detection, determine an adaptive threshold in response to the P-wave being detected, adjust the atrial arrhythmia threshold in response to the adaptive threshold, and generate a subsequent initial detection of an atrial arrhythmia event using the adjusted atrial arrhythmia threshold.Type: ApplicationFiled: October 29, 2015Publication date: August 18, 2016Inventors: Shantanu Sarkar, Daniel L. Hansen, Grant A. Neitzell, Jerry D. Reiland, Ryan Wyszynski
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Publication number: 20160235320Abstract: A method and implantable medical device for determining noise in response to a cardiac signal that includes sensing the cardiac signal, determining a sensing window in response to the sensed cardiac signal, the sensing window comprising a first portion and a second portion, determining a first derivative signal in response to the sensed cardiac signal within only one of the first portion and the second portion of the sensing window, determining a second derivative signal in response to the sensed cardiac signal within the one of the first portion and the second portion of the sensing window, determining whether an amplitude of the second derivative signal satisfies an amplitude threshold, and determining noise in response to the amplitude of the second derivative signal satisfying the amplitude threshold.Type: ApplicationFiled: April 24, 2015Publication date: August 18, 2016Inventors: Shantanu Sarkar, Daniel L. Hansen, Grant A. Neitzell
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Publication number: 20160235992Abstract: A method and implantable medical device for determining an atrial arrhythmia event that includes sensing a cardiac signal, determining an atrial arrhythmia score for identifying the arrhythmia event in response to the sensed cardiac signal, determining a sensing window in response to the sensed cardiac signal, the sensing window having a first portion and a second portion, determining signal characteristics of the sensed cardiac signal within the first portion and within the second portion, determining whether the sensed cardiac signal within the first portion and within the second portion corresponds to a P-wave in response to the determined signal characteristics, determining whether a signal to noise ratio of the sensed cardiac signal within the first portion and the second portion of the sensing window is satisfied, determining whether to update the arrhythmia score in response to the determined P-wave and the determined signal to noise ratio, and determining whether to delivery an arrhythmia therapy in rType: ApplicationFiled: April 24, 2015Publication date: August 18, 2016Inventors: Shantanu Sarkar, Daniel L. Hansen, Grant A. Neitzell, Jerry D. Reiland, Ryan Wyszynski
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Publication number: 20160235321Abstract: A method and implantable medical device for determining a flutter event in response to a cardiac signal that includes sensing the cardiac signal, determining a sensing window in response to the sensed cardiac signal, the sensing window having a first portion and a second portion. A first derivative signal and a second derivative signal are determined in response to the sensed cardiac signal within the first portion and the second portion of the sensing window, and a sum of amplitudes of the second derivative signal within one or both of the first portion and the second portion of the sensing window is determined, and the flutter event is determined in response to the determined sum of amplitudes.Type: ApplicationFiled: April 24, 2015Publication date: August 18, 2016Inventors: Shantanu Sarkar, Daniel L. Hansen, Grant A. Neitzell