Patents by Inventor Thao Ngo
Thao Ngo 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).
-
Patent number: 9566442Abstract: Techniques are provided for use with a pulmonary artery pressure (PAP) monitor having an implantable PAP sensor. In one example, a PAP signal is sensed that is representative of beat-by-beat variations in PAP occurring during individual cardiac cycles of the patient. The PAP monitor detects peaks within the PAP signal corresponding to valvular regurgitation within the heart, then detects mitral regurgitation (MR) based on the peaks. In other examples, the PAP monitor optimizes pacing parameters based on the PAP signal and corresponding electrical cardiac signals. Examples are provided where the PAP monitor is an external system and other examples are provided where the PAP monitor is a component of an implantable cardiac rhythm management device.Type: GrantFiled: November 19, 2012Date of Patent: February 14, 2017Assignee: Pacesetter, Inc.Inventors: Thao Ngo, Kathleen Kresge, Michael Kane, Scott Patrick Simon
-
Patent number: 9301702Abstract: Techniques are provided for use with a pulmonary artery pressure (PAP) monitor having an implantable PAP sensor. In one example, a PAP signal is sensed that is representative of beat-by-beat variations in PAP occurring during individual cardiac cycles of the patient. The PAP monitor detects intervals within the signal corresponding to the durations of cardiac cycles, then detects cardiac rhythm irregularities based on the intervals. For example, the PAP monitor can detect and distinguish atrial fibrillation, ventricular fibrillation and ventricular tachycardia based on the stability of the intervals of the PAP signal along with other information such as ventricular rate. The PAP monitor can also detect and distinguish premature contractions based on durations of the intervals. Examples where the PAP monitor is a component of an implantable cardiac rhythm management device (CRMD) are also provided.Type: GrantFiled: November 19, 2012Date of Patent: April 5, 2016Assignee: PACESETTER, INC.Inventors: Thao Ngo, Kathleen Kresge, Michael Kane, Scott Patrick Simon
-
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: 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
-
Publication number: 20150223702Abstract: Systems, devices and methods of monitoring blood flow velocity are disclosed herein. For example, one method of monitoring blood flow velocity includes: locating a blood flow velocity sensor near the ostium in the coronary sinus; and sensing towards a portion of the aorta. A second example method includes: locating a blood flow velocity sensor in a vein; and sensing towards an adjacent artery. A third example method includes: locating a blood flow velocity sensor near the tricuspid valve; and sensing towards a tricuspid valve annulus. A fourth example method includes: locating a blood flow velocity sensor right ventricular outflow tract; and sensing towards a portion of the aorta. A fifth example method includes: locating a blood flow velocity sensor in the great cardiac vein; and sensing towards a left anterior descending artery. A sixth example method includes: locating a blood flow velocity sensor in the right atrial appendage; and sensing towards a portion of the aorta.Type: ApplicationFiled: April 21, 2015Publication date: August 13, 2015Inventors: Guy Vanney, Thao Ngo, Scott Sjoquist, Dorab N. Sethna, Annapurna Karicherla, George K. Lewis, Dan E. Gutfinger, Gene A. Bornzin
-
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
-
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: 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: 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: 20140142444Abstract: Techniques are provided for use with a pulmonary artery pressure (PAP) monitor having an implantable PAP sensor. In one example, a PAP signal is sensed that is representative of beat-by-beat variations in PAP occurring during individual cardiac cycles of the patient. The PAP monitor detects peaks within the PAP signal corresponding to valvular regurgitation within the heart, then detects mitral regurgitation (MR) based on the peaks. In other examples, the PAP monitor optimizes pacing parameters based on the PAP signal and corresponding electrical cardiac signals. Examples are provided where the PAP monitor is an external system and other examples are provided where the PAP monitor is a component of an implantable cardiac rhythm management device.Type: ApplicationFiled: November 19, 2012Publication date: May 22, 2014Applicant: PACESETTER, INC.Inventors: Thao Ngo, Kathleen Kresge, Michael Kane, Scott Patrick Simon
-
Publication number: 20140142443Abstract: Techniques are provided for use with a pulmonary artery pressure (PAP) monitor having an implantable PAP sensor. In one example, a PAP signal is sensed that is representative of beat-by-beat variations in PAP occurring during individual cardiac cycles of the patient. The PAP monitor detects intervals within the signal corresponding to the durations of cardiac cycles, then detects cardiac rhythm irregularities based on the intervals. For example, the PAP monitor can detect and distinguish atrial fibrillation, ventricular fibrillation and ventricular tachycardia based on the stability of the intervals of the PAP signal along with other information such as ventricular rate. The PAP monitor can also detect and distinguish premature contractions based on durations of the intervals. Examples where the PAP monitor is a component of an implantable cardiac rhythm management device (CRMD) are also provided.Type: ApplicationFiled: November 19, 2012Publication date: May 22, 2014Applicant: PACESETTER, INC.Inventors: Thao Ngo, Kathleen Kresge, Michael Kane, Scott Patrick Simon
-
Publication number: 20130012824Abstract: Disclose herein is a method of measuring pressures in a coronary sinus. In one embodiment, the method includes: introducing a distal portion of a lead or tool into the coronary sinus, wherein the distal portion includes first and second pressure sensors and at least one selectably expandable member; expanding the at least one expandable member such that the first and second sensors are isolated from each other within the coronary sinus; and taking pressure measurements with the first and second sensors when isolated from each other.Type: ApplicationFiled: September 13, 2012Publication date: January 10, 2013Applicant: PACESETTER, INC.Inventors: Guy Vanney, Scott Salys, Thao Ngo, Elizabeth Nee, Annapurna Karicherla, Ravisankar Gurusamy, Gene A. Bornzin
-
Patent number: 8287458Abstract: Disclose herein is a method of measuring pressures in a coronary sinus. In one embodiment, the method includes: introducing a distal portion of a lead or tool into the coronary sinus, wherein the distal portion includes first and second pressure sensors and at least one selectably expandable member; expanding the at least one expandable member such that the first and second sensors are isolated from each other within the coronary sinus; and taking pressure measurements with the first and second sensors when isolated from each other.Type: GrantFiled: April 25, 2008Date of Patent: October 16, 2012Assignee: Pacesetter, Inc.Inventors: Guy Vanney, Scott Salys, Thao Ngo, Elizabeth Nee, Annapurna Karicherla, Ravisankar Gurusamy, Gene A. Bornzin
-
Publication number: 20120197141Abstract: Systems, devices and methods of monitoring blood flow velocity are disclosed herein. For example, one method of monitoring blood flow velocity includes: locating a blood flow velocity sensor near the ostium in the coronary sinus; and sensing towards a portion of the aorta. A second example method includes: locating a blood flow velocity sensor in a vein; and sensing towards an adjacent artery. A third example method includes: locating a blood flow velocity sensor near the tricuspid valve; and sensing towards a tricuspid valve annulus. A fourth example method includes: locating a blood flow velocity sensor right ventricular outflow tract; and sensing towards a portion of the aorta. A fifth example method includes: locating a blood flow velocity sensor in the great cardiac vein; and sensing towards a left anterior descending artery. A sixth example method includes: locating a blood flow velocity sensor in the right atrial appendage; and sensing towards a portion of the aorta.Type: ApplicationFiled: January 28, 2011Publication date: August 2, 2012Applicant: PACESETTER, INC.Inventors: Guy Vanney, Thao Ngo, Scott Sjoquist, Dorab N. Sethna, Annapurna Karicherla, George K. Lewis, Dan E. Gutfinger, Gene A. Bornzin
-
Publication number: 20120130231Abstract: Disclosed herein is a magnetic navigation enabled tool configured for the delivery of an implantable medical lead. The tool includes a tubular body, a sensor and a conductor. The tubular body includes a distal end, a proximal end, an inner layer including an outer circumferential surface, a lumen inward of the inner layer, and an outer layer over the outer circumferential surface of the inner layer. The sensor is on the tubular body near the distal end. The conductor extends from the sensor coil towards the proximal end imbedded in the inner layer.Type: ApplicationFiled: November 24, 2010Publication date: May 24, 2012Applicant: PACESETTER, INC.Inventors: Thao Ngo, Tyler Strang, Vitaliy Epshteyn, Lior Sobe, Ran Sela, Guy Vanney
-
Patent number: 8175693Abstract: An exemplary method includes providing a mechanical activation time (MA time) for a myocardial location, the location defined at least in part by an electrode and the mechanical activation time determined at least in part by movement of the electrode; providing an electrical activation time (EA time) for the myocardial location; and determining an electromechanical delay (EMD) for the myocardial location based on the difference between the mechanical activation time (MA time) and the electrical activation time (EA time).Type: GrantFiled: August 9, 2011Date of Patent: May 8, 2012Assignee: Pacesetter, Inc.Inventors: Stuart Rosenberg, Allen Keel, Kyungmoo Ryu, Wenbo Hou, Kjell Noren, Thao Ngo, Michael Yang
-
Publication number: 20050276888Abstract: The present invention provides a process for producing green vegetables and fruits having all or substantially all of their green color preserved during processing. In general, the process comprises exposing the vegetables and fruits to zinc to preserve green pigments in the skins, peels, etc. The present invention also provides color-preserved green vegetables and fruits made by the process of the present invention.Type: ApplicationFiled: March 4, 2005Publication date: December 15, 2005Inventors: Yanyun Zhao, Dennis Anderson, Thao Ngo