1
Todd J Sheldon, William J Combs, Mark K Erickson, Can Cinbis: Posture and device orientation and calibration for implantable medical devices. Medtronic, Harold R Patton, Reed A Duthler, March 28, 2000: US06044297 (395 worldwide citation)

A method of and apparatus for determining the physical posture of a patient's body, having a superior-inferior body axis, an anterior-posterior body axis and a lateral-medial body axis, in relation to earth's gravitational field. A medical device having first, second and, optionally, third accelerom ...


2
Yong Kyun Cho, Luc R Mongeon, Mark K Erickson, H Toby Markowitz: Method and apparatus to detect and treat sleep respiratory events. Medtronic, Girma Wolde Michael, Michael C Soldner, November 4, 2003: US06641542 (303 worldwide citation)

The present invention provides a method and apparatus for detecting and treating sleep respiratory events that includes a plurality of sensors gathering physiological data related to sleep respiratory events. A processor extracts an average cycle length and a frequency of at least one of Cheyne-Stok ...


3
Yong K Cho, Steven L Ning, Luc R Mongeon, Scott W Davie, Todd J Sheldon, Mark K Erickson, H Toby Markowitz: Method and apparatus for detecting respiratory disturbances. Medtronic, Daniel G Chapik, Paul H McDowall, Girma Wolde Michael, January 9, 2007: US07160252 (175 worldwide citation)

A system and method for monitoring respiration including sensing a signal that varies with respiration, deriving a respiration parameter, applying criteria for detecting a respiration disturbance and determining one or more respiratory disturbance metrics. The system preferably includes an implantab ...


4
Yong K Cho, Mark K Erickson, H Toby Markowitz: System and method for automatically monitoring and delivering therapy for sleep-related disordered breathing. Medtronic, Daniel G Chapik, Girma Walde Michael, April 11, 2006: US07025730 (127 worldwide citation)

The invention relates generally to a system and method for monitoring and automatically delivering a therapy for sleep-related disordered breathing. In one form the present invention relates to an external device for monitoring for sleep-related disordered breathing in communication with an implanta ...


5
Mark K Erickson, Tom D Bennett: Apparatus for discrimination of stable and unstable ventricular tachycardia and for treatment thereof. Medtronic, Reed A Duthler, Harold R Patton, January 5, 1993: US05176137 (91 worldwide citation)

A method and apparatus for discriminating between stable and unstable ventricular tachycardias based on a measurement of oxygen saturation. Reference values for average oxygen saturation level and of the pulsatile characteristic of the oxygen saturation level are taken while a patient is in a restin ...


6
Yong K Cho, Steven L Ning, Luc R Mongeon, Scott W Davie, Todd J Sheldon, Mark K Erickson, H Toby Markowitz: Method and apparatus for detecting respiratory disturbances. Medtronic, Stephen W Bauer, April 28, 2009: US07524292 (22 worldwide citation)

A system and method for monitoring respiration including sensing a signal that varies with respiration, deriving a respiration parameter, applying criteria for detecting a respiration disturbance and determining one or more respiratory disturbance metrics. The system preferably includes an implantab ...


7
Sameh Sowelam, H Toby Markowitz, Mark K Erickson, Ioana Nicolaescu: System and method for monitoring periodic breathing associated with heart failure. Medtronic, Stephen W Bauer, Reed A Duthler, March 1, 2011: US07896813 (17 worldwide citation)

A system and method for monitoring in a patient includes producing sensor signals representative of a physiologic parameter associated with respiration. A periodic breathing cycle is detected based on the sensor signals. An output is produced as a function of the cycle length.


8
Harold Toby Markowitz, Mark K Erickson, Alan V Sahakian, Andreas Schuler: Methods and apparatus for detection and treatment of syncope. Medtronic, Girma Wolde Michael, Daniel G Chapik, May 17, 2005: US06895275 (15 worldwide citation)

The present invention relates to methods and apparatus for detection and treatment of syncope in an implantable medical device, and particularly to detection of syncope as a function of a predetermined increase in one or more respiration parameter and drop in heart rate and optionally delivering a p ...


9
H Toby Markowitz, Pooja Mehta, Chad T Giese, Mark K Erickson, Yong K Cho, Marina Jovanovic, Sameh Sowelam: Implantable medical device with circulation delay measurement and therapy control. Medtronic, Daniel G Chapik, January 1, 2008: US07315759 (13 worldwide citation)

Oxygen saturation data is monitored during a predefined window to obtain a measurement of circulation delay. The measured circulation delay is used as a basis for determining therapies, including overdrive pacing. In some embodiments, circulation delay is used to identify patients that will benefit ...


10
Yong K Cho, Tommy D Bennett, Mark K Erickson, Maneesh Shrivastav, Saul E Greenhut, Karen J Kleckner, Charles P Sperling, Robert A Corey: Method and apparatus for determining respiratory effort in a medical device. Medtronic, Michael C Soldner, June 19, 2012: US08202223 (2 worldwide citation)

A method of determining respiratory effort in a medical device in which pressure signals are sensed to generate corresponding sample points, an inspiration and an expiration are detected in response to the sensed pressure signals, a breath is detected in response to the detected inspiration and the ...