1
Krzysztof Z Siejko, Laura Green, Gerrard M Carlson: Third heart sound activity index for heart failure monitoring. Cardiac Pacemakers, Schwegman Lundberg Woessner & Kluth P A, October 3, 2006: US07115096 (113 worldwide citation)

A cardiac rhythm management system provides for the trending of a third heart sound (S3) index. The S3 index is a ratio, or an estimate of the ratio, of the number of S3 beats to the number of all heart beats, where the S3 beats are each a heart beat during which an occurrence of S3 is detected. An ...


2
Jeffrey E Stahmann, Kent Lee, Jesse W Hartley, Quan Ni, John D Hatlestad, Qingsheng Zhu, Krzysztof Z Siejko: Patient monitoring, diagnosis, and/or therapy systems and methods. Cardiac Pacemakers, Hollingsworth & Funk, August 31, 2010: US07787946 (100 worldwide citation)

Systems and methods involve an implantable device configured to perform at least one cardiac-related function, a patient-external respiratory therapy device, and a communication channel configured to facilitate communication between the implantable device and the respiratory therapy device. The impl ...


3
Keith R Maile, Krzysztof Z Siejko: Determining a patients posture from mechanical vibrations of the heart. Cardiac Pacemakers, Schwegman Lundberg & Woessner P A, July 14, 2009: US07559901 (85 worldwide citation)

A system for determining a patient's posture by monitoring heart sounds. The system comprises an implantable medical device that includes a sensor operable to produce an electrical signal representative of heart sounds, a sensor interface circuit coupled to the sensor to produce a heart sound signal ...


4
Keith R Maile, Krzysztof Z Siejko: Dual-use sensor for rate responsive pacing and heart sound monitoring. Cardiac Pacemakers, Schwegman Lundberg Woessner & Kluth P A, July 24, 2007: US07248923 (75 worldwide citation)

An implantable medical device includes a dual-use sensor such as a single accelerometer that senses an acceleration signal. A sensor processing circuit processes the acceleration signal to produce an activity level signal and a heart sound signal. The implantable medical device provides for rate res ...


5
Krzysztof Z Siejko, Gerrard M Carlson, William C Lincoln, Andrew P Kramer: Phonocardiographic image-based atrioventricular delay optimization. Cardiac Pacemakers, Schwegman Lundberg Woessner & Kluth P A, October 17, 2006: US07123962 (63 worldwide citation)

A cardiac rhythm management system provides a phonocardiographic image indicative of a heart's mechanical events related to hemodynamic performance to allow, among other things, diagnosis of cardiac conditions and evaluation of therapies treating the cardiac conditions. The phonocardiographic image ...


6
Marina V Brockway, Imad Libbus, Krzysztof Z Siejko, Robert J Sweeney: Controlled titration of neurostimulation therapy. Cardiac Pacemakers, Schwegman Lundberg & Woessner P A, September 21, 2010: US07801604 (62 worldwide citation)

Described herein are methods and devices that utilize electrical neural stimulation to treat heart failure by modulating a patient's autonomic balance in a manner that inhibits sympathetic activity and/or augments parasympathetic activity. Because other therapies for treating heart failure may also ...


7
Krzysztof Z Siejko, Gerrard M Carlson: Method and apparatus for third heart sound detection. Cardiac Pacemakers, Schwegman Lundberg & Woessner P A, October 7, 2008: US07431699 (60 worldwide citation)

A cardiac rhythm management system includes a heart sound detector providing for detection of the third heart sounds (S3). An implantable sensor such as an accelerometer or a microphone senses an acoustic signal indicative heart sounds including the second heart sounds (S2) and S3. The heart sound d ...


8
Marina V Brockway, Imad Libbus, Krzysztof Z Siejko, Robert J Sweeney: Controlled titration of neurostimulation therapy. Cardiac Pacemakers, Schwegman Lundberg & Woessner P A, June 5, 2012: US08195290 (49 worldwide citation)

Described herein are methods and devices that utilize electrical neural stimulation to treat heart failure by modulating a patient's autonomic balance in a manner that inhibits sympathetic activity and/or augments parasympathetic activity. Because other therapies for treating heart failure may also ...


9
Ramesh Wariar, Krzysztof Z Siejko, Gerrard M Carlson, Jeffrey E Stahmann: Systems and methods for multi-axis cardiac vibration measurements. Cardiac Pacemakers, Schwegman Lundberg & Wuessner P A, September 9, 2008: US07424321 (37 worldwide citation)

A system to monitor heart sounds, such as to detect a worsening condition of heart failure decompensation. The system comprises a medical device that includes an implantable multi-axis heart sound sensor, operable to produce, for each of at least two nonparallel axes, an electrical signal representa ...


10
Krzysztof Z Siejko, Gerrard M Carlson, William C Lincoln, Qingsheng Zhu: Method and apparatus for phonocardiographic image acquisition and presentation. Cardiac Pacemakers, Schwegman Lundberg Woessner & Kluth P A, August 21, 2007: US07260429 (36 worldwide citation)

A cardiac rhythm management system provides a phonocardiographic image indicative of a heart's mechanical events related to hemodynamic performance. The phonocardiographic image includes a stack of acoustic sensor signal segments representing multiple cardiac cycles. Each acoustic sensor signal segm ...