Patents by Inventor Kjell Noren
Kjell Noren 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).
-
Publication number: 20170119453Abstract: A system and method for treating an arrhythmia in a heart are provided. The system includes an electronic control unit configured to monitor movement of one or more position sensor over a period of time. The position sensors may, for example, comprise electrodes or coils configured to generate induced voltages and currents in the presence of electromagnetic fields, The positions sensors are in contact with portions of heart tissue and changes in position are representative of motion of that tissue. The electronic control unit is further configured to generate an indicator, responsive to the movements of the sensors over the period of time, of a characteristic of the heart affected by delivery of ablation energy to heart tissue. In this manner, the effectiveness and safety of cardiac tissue ablation for treatment of the arrhythmia can be assessed and a post-ablation therapy regimen determined.Type: ApplicationFiled: December 7, 2016Publication date: May 4, 2017Inventors: Kyungmoo Ryu, Thao T. Ngo, Euljoon Park, Stuart Rosenberg, Allen Keel, Wenbo Hou, Steve Koh, Kjell Noren, Michael Yang
-
Patent number: 9572620Abstract: A system and method for treating an arrhythmia in a heart are provided. The system includes an electronic control unit configured to monitor movement of one or more position sensor over a period of time. The position sensors may, for example, comprise electrodes or coils configured to generate induced voltages and currents in the presence of electromagnetic fields. The positions sensors are in contact with portions of heart tissue and changes in position are representative of motion of that tissue. The electronic control unit is further configured to generate an indicator, responsive to the movements of the sensors over the period of time, of a characteristic of the heart affected by delivery of ablation energy to heart tissue. In this manner, the effectiveness and safety of cardiac tissue ablation for treatment of the arrhythmia can be assessed and a post-ablation therapy regimen determined.Type: GrantFiled: December 29, 2010Date of Patent: February 21, 2017Inventors: Kyungmoo Ryu, Thao T. Ngo, Euljoon Park, Stuart Rosenberg, Allen Keel, Wenbo Hou, Steve Koh, Kjell Noren, Michael Yang
-
Publication number: 20160361562Abstract: In response to local or systemic inflammation in a patient, photobiomodulation therapy is applied to a cardiac location to reduce the risk and/or occurrence of cardiac arrhythmia. Once inflammation is identified, photobiomodulation therapy can be applied in any suitable fashion (e.g., via a catheter- or transesophageal probe-mounted photoemitter, via an externally-applied photoemitter, or via photoemitter incorporated into an implantable medical device). Photobiomodulation therapy can also be employed to good advantage in conjunction with non-photobiomodulation therapy (e.g., traditional cardiac rhythm management therapies).Type: ApplicationFiled: August 11, 2016Publication date: December 15, 2016Inventors: Karin Järverud, Cecilia Emanuelsson, Anders Björling, Kjell Noren
-
Patent number: 9440091Abstract: In response to local or systemic inflammation in a patient, photobiomodulation therapy is applied to a cardiac location to reduce the risk and/or occurrence of cardiac arrhythmia. Once inflammation is identified, photobiomodulation therapy can be applied in any suitable fashion (e.g., via a catheter- or transesophageal probe-mounted photoemitter, via an externally-applied photoemitter, or via photoemitter incorporated into an implantable medical device). Photobiomodulation therapy can also be employed to good advantage in conjunction with non-photobiomodulation therapy (e.g., traditional cardiac rhythm management therapies).Type: GrantFiled: November 5, 2015Date of Patent: September 13, 2016Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.Inventors: Karin Jarverud, Cecilia Emmanuelsson, Anders Bjorling, Kjell Noren
-
Patent number: 9436801Abstract: A patient-specific hemodyanmic status model is determined from impedance data collected during periods of normal and abnormal hemodynamic status by deriving parameter values of a set of multiple impedance-derivable parameters from impedance signals collected during periods of normal hemodynamic status and in connection with periods of abnormal hemodynamic status. The parameter values are employed to estimate coefficients of a linear parametric status model. These coefficients can then be used together with parameter values determined from impedance signals determined during status assessment periods in order to determine a current hemdoynamic status of the patient.Type: GrantFiled: March 18, 2011Date of Patent: September 6, 2016Assignee: St. Jude Medical ABInventors: Karin Jarverud, Anders Bjorling, Malin Hollmark, Kjell Noren, Tomas Svensson, Stefan Hjelm
-
Publication number: 20160059035Abstract: In response to local or systemic inflammation in a patient, photobiomodulation therapy is applied to a cardiac location to reduce the risk and/or occurrence of cardiac arrhythmia. Once inflammation is identified, photobiomodulation therapy can be applied in any suitable fashion (e.g., via a catheter- or transesophageal probe-mounted photoemitter, via an externally-applied photoemitter, or via photoemitter incorporated into an implantable medical device). Photobiomodulation therapy can also be employed to good advantage in conjunction with non-photobiomodulation therapy (e.g., traditional cardiac rhythm management therapies).Type: ApplicationFiled: November 5, 2015Publication date: March 3, 2016Inventors: Karin Jarverud, Cecilia Emmanuelsson, Anders Bjorling, Kjell Noren
-
Patent number: 9180307Abstract: In response to local or systemic inflammation in a patient, photobiomodulation therapy is applied to a cardiac location to reduce the risk and/or occurrence of cardiac arrhythmia. Once inflammation is identified, photobiomodulation therapy can be applied in any suitable fashion (e.g., via a catheter- or transesophageal probe-mounted photoemitter, via an externally-applied photoemitter, or via photoemitter incorporated into an implantable medical device). Photobiomodulation therapy can also be employed to good advantage in conjunction with non-photobiomodulation therapy (e.g., traditional cardiac rhythm management therapies).Type: GrantFiled: March 15, 2011Date of Patent: November 10, 2015Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.Inventors: Karin Järverud, Cecilia Emanuelsson, Anders Björling, Kjell Noren
-
Patent number: 9125585Abstract: An exemplary method includes positioning a lead in a patient where the lead has a longitudinal axis that extends from a proximal end to a distal end and where the lead includes an electrode with an electrical center offset from the longitudinal axis of the lead body; measuring electrical potential in a three-dimensional potential field using the electrode; and based on the measuring and the offset of the electrical center, determining lead roll about the longitudinal axis of the lead body where lead roll may be used for correction of field heterogeneity, placement or navigation of the lead or physiological monitoring (e.g., cardiac function, respiration, etc.). Various other methods, devices, systems, etc., are also disclosed.Type: GrantFiled: July 31, 2014Date of Patent: September 8, 2015Assignee: PACESETTER, INC.Inventors: Stuart Rosenberg, Thao Ngo, Kyungmoo Ryu, Kjell Noren, Allen Keel, Wenbo Hou, Steve Koh, Michael Yang
-
Patent number: 9125584Abstract: An exemplary method includes positioning a lead in a patient where the lead has a longitudinal axis that extends from a proximal end to a distal end and where the lead includes an electrode with an electrical center offset from the longitudinal axis of the lead body; measuring electrical potential in a three-dimensional potential field using the electrode; and based on the measuring and the offset of the electrical center, determining lead roll about the longitudinal axis of the lead body where lead roll may be used for correction of field heterogeneity, placement or navigation of the lead or physiological monitoring (e.g., cardiac function, respiration, etc.). Various other methods, devices, systems, etc., are also disclosed.Type: GrantFiled: July 31, 2014Date of Patent: September 8, 2015Assignee: PACESETTER, INC.Inventors: Stuart Rosenberg, Thao Ngo, Kyungmoo Ryu, Kjell Noren, Allen Keel, Wenbo Hou, Steve Koh, Michael Yang
-
Patent number: 9119545Abstract: An implantable medical device, is designed to collect a signal representative of the electric activity of the heart and determine a cardiogenic impedance signal for at least a portion of the heart. An R-wave detector of the IMD detects the timing of an R-wave during a cardiac cycle based on the signal representative of the electric activity. A minimum detector detects the timing of a cardiogenic impedance minimum in the cardiogenic impedance signal and within a systolic time window of the cardiac cycle. A detected arrhythmia is then classified by the IMD based on the timing of the R-wave detected by the R-wave detector and the timing of the cardiogenic impedance minimum detected by the minimum detector.Type: GrantFiled: March 31, 2011Date of Patent: September 1, 2015Assignee: St. Jude Medical, ABInventors: Anders Bjorling, Malin Hollmark, Tomas Svensson, Stefan Hjelm, Kjell Noren, Karin Jarverud
-
Patent number: 8903510Abstract: An exemplary method includes positioning a lead in a patient where the lead has a longitudinal axis that extends from a proximal end to a distal end and where the lead includes an electrode with an electrical center offset from the longitudinal axis of the lead body; measuring electrical potential in a three-dimensional potential field using the electrode; and based on the measuring and the offset of the electrical center, determining lead roll about the longitudinal axis of the lead body where lead roll may be used for correction of field heterogeneity, placement or navigation of the lead or physiological monitoring (e.g., cardiac function, respiration, etc.). Various other methods, devices, systems, etc., are also disclosed.Type: GrantFiled: January 28, 2010Date of Patent: December 2, 2014Assignee: Pacesetter, Inc.Inventors: Stuart Rosenberg, Thao Thu Nguyen, Kyungmoo Ryu, Kjell Noren, Allen Keel, Wenbo Hou, Steve Koh, Michael Yang
-
Publication number: 20140343649Abstract: An exemplary method includes positioning a lead in a patient where the lead has a longitudinal axis that extends from a proximal end to a distal end and where the lead includes an electrode with an electrical center offset from the longitudinal axis of the lead body; measuring electrical potential in a three-dimensional potential field using the electrode; and based on the measuring and the offset of the electrical center, determining lead roll about the longitudinal axis of the lead body where lead roll may be used for correction of field heterogeneity, placement or navigation of the lead or physiological monitoring (e.g., cardiac function, respiration, etc.). Various other methods, devices, systems, etc., are also disclosed.Type: ApplicationFiled: July 31, 2014Publication date: November 20, 2014Inventors: Stuart Rosenberg, Thao Ngo, Kyungmoo Ryu, Kjell Noren, Allen Keel, Wenbo Hou, Steve Koh, Michael Yang
-
Publication number: 20140343652Abstract: An exemplary method includes positioning a lead in a patient where the lead has a longitudinal axis that extends from a proximal end to a distal end and where the lead includes an electrode with an electrical center offset from the longitudinal axis of the lead body; measuring electrical potential in a three-dimensional potential field using the electrode; and based on the measuring and the offset of the electrical center, determining lead roll about the longitudinal axis of the lead body where lead roll may be used for correction of field heterogeneity, placement or navigation of the lead or physiological monitoring (e.g., cardiac function, respiration, etc.). Various other methods, devices, systems, etc., are also disclosed.Type: ApplicationFiled: July 31, 2014Publication date: November 20, 2014Inventors: Stuart Rosenberg, Thao Ngo, Kyungmoo Ryu, Kjell Noren, Allen Keel, Wenbo Hou, Steve Koh, Michael Yang
-
Publication number: 20140343651Abstract: An exemplary method includes positioning a lead in a patient where the lead has a longitudinal axis that extends from a proximal end to a distal end and where the lead includes an electrode with an electrical center offset from the longitudinal axis of the lead body; measuring electrical potential in a three-dimensional potential field using the electrode; and based on the measuring and the offset of the electrical center, determining lead roll about the longitudinal axis of the lead body where lead roll may be used for correction of field heterogeneity, placement or navigation of the lead or physiological monitoring (e.g., cardiac function, respiration, etc.). Various other methods, devices, systems, etc., are also disclosed.Type: ApplicationFiled: July 31, 2014Publication date: November 20, 2014Inventors: Stuart Rosenberg, Thao Ngo, Kyungmoo Ryu, Kjell Noren, Allen Keel, Wenbo Hou, Steve Koh, Michael Yang
-
Publication number: 20140343650Abstract: An exemplary method includes positioning a lead in a patient where the lead has a longitudinal axis that extends from a proximal end to a distal end and where the lead includes an electrode with an electrical center offset from the longitudinal axis of the lead body; measuring electrical potential in a three-dimensional potential field using the electrode; and based on the measuring and the offset of the electrical center, determining lead roll about the longitudinal axis of the lead body where lead roll may be used for correction of field heterogeneity, placement or navigation of the lead or physiological monitoring (e.g., cardiac function, respiration, etc.). Various other methods, devices, systems, etc., are also disclosed.Type: ApplicationFiled: July 31, 2014Publication date: November 20, 2014Inventors: Stuart Rosenberg, Thao Ngo, Kyungmoo Ryu, Kjell Noren, Allen Keel, Wenbo Hou, Steve Koh, Michael Yang
-
Patent number: 8886310Abstract: In a system and method for controlling an implantable stimulator capable of producing pacing pulses to be delivered to cardiac tissue, as well as vagal stimulation pulses to be delivered to vagus nerve sites, upon detection of a premature cardiac event, such as a premature ventricular or atrial contraction, a simulated heart rate turbulence (HRT) procedure is applied if the intrinsic heart rate turbulence is weakened or absent. The simulated HRT includes a first phase in which the heart rate is increased, from the existing level, for a number of heart beats, a second phase in which the heart rate is decreased for a number of heart beats, and an optional third phase in which the heart rate is returned to said existing level.Type: GrantFiled: June 9, 2006Date of Patent: November 11, 2014Assignee: St. Jude Medical ABInventors: Kjell Norén, Taraneh G. Farazi
-
Publication number: 20140257070Abstract: Cardiac valve events are monitored by recording a left atrial pressure (LAP) representing signal using an implantable pressure sensor (50). The LAP signal is processed in order to generate a derivative LAP signal representative of the first time derivative of the LAP signal. The opening of the aortic valve of the heart is then identified to coincide in time with a minimum in the derivative LAP signal following ventricular depolarization in a cardiac cycle.Type: ApplicationFiled: June 20, 2011Publication date: September 11, 2014Applicant: ST. JUDE MEDICAL ABInventors: Andreas Blomqvist, Kjell Noren
-
Patent number: 8812109Abstract: In an implantable medical device and a method for stimulating a heart of a patient, at least one left atrial pressure (LAP) signal over a cardiac cycle is obtained. The A-wave is identified using the LAP signal and a maximum positive rate of change of the A-wave of the LAP signal is determined. The maximum positive rate of change of the A-wave corresponds to the rate which the pressure in the atrium raises as the atria contraction forces more blood into the ventricle during the very last stage of diastole. Further, AV and/or VV delay is adjusted in response to the maximum positive rate of change of the A-wave, wherein a reduction of the maximum positive rate of change of the A-wave indicates an AV and/or VV delay providing an enhanced hemodynamic performance.Type: GrantFiled: August 23, 2012Date of Patent: August 19, 2014Assignee: St. Jude Medical ABInventors: Andreas Blomqvist, Kjell Noren
-
Patent number: 8798765Abstract: CRT settings for an implantable medical device are determined by applying pacing pulses to heart chambers of a scheme of different combinations of interchamber delays. A respective width parameter value representing an R or P wave width is determined for each such delay combination based on an ECG representing signal and the width parameter values are employed to estimate a parametric model defining the width parameter as a function of interchamber delays. Candidate interchamber delays that minimize the width parameter are determined from the parametric model and employed to determine optimal CRT settings. The technique provides an efficient way of finding optimal CRT settings when multiple pacing sites are available in a heart chamber.Type: GrantFiled: May 14, 2012Date of Patent: August 5, 2014Assignee: St. Jude Medical ABInventors: Kjell Noren, Anders Bjorling, Tomas Svensson, Sven-Erik Hedberg, Allen Keel, Stuart Rosenberg, Kyungmoo Ryu
-
Patent number: 8790254Abstract: In a method and a device for determining the posture of a patient, a bio-impedance measurement device, having a number of electrodes configured to interact with the patient in a number of different electrode configurations, is operated to initiate a patient posture determining session by measuring an impedance value of the patient with the electrodes in at least one configuration among the number of configurations. A reference impedance value from among a number of stored reference impedance values for the at least one configuration is selected. The number of stored reference impedance values are respectively associated with different postures of the patient, and the posture associated with the selected reference impedance value represents a candidate posture. The measured impedance value is compared with the selected reference impedance value, thereby obtaining a comparison result.Type: GrantFiled: June 29, 2005Date of Patent: July 29, 2014Assignee: St. Jude Medical ABInventors: Malin Öhlander, Nils Holmström, Kjell Norén