1
Clark R Baker Jr, Thomas J Yorkey: Method and apparatus for estimating physiological parameters using model-based adaptive filtering. Nellcor Puritan Bennett, Townsend Townsend & Crew, December 29, 1998: US05853364 (336 worldwide citation)

A method and apparatus for reducing the effects of noise on a system for measuring physiological parameters, such as, for example, a pulse oximeter. The method and apparatus of the invention take into account the physical limitations on various physiological parameters being monitored when weighting ...


2
Clark R Baker Jr, Richard D Moshier, Thomas J Yorkey: Method and apparatus for nuisance alarm reductions. Nellcor Puritan Bennett, Townsend and Townsend and Crew, February 2, 1999: US05865736 (256 worldwide citation)

A method and apparatus for controlling alarms in medical diagnostic apparatus where an alarm is generated when a measured value for a physiological parameter passes a threshold. The method determines both the amount of time the measured value is past the threshold, and the amount by which the thresh ...


3
Clark R Baker Jr, Thomas J Yorkey: Method and apparatus for estimating physiological parameters using model-based adaptive filtering. Nellcor Puritan Bennett Incorporated, Townsend and Townsend and Crew, July 4, 2000: US06083172 (233 worldwide citation)

A method and apparatus for reducing the effects of noise on a system for measuring physiological parameters, such as, for example, a pulse oximeter. The method and apparatus of the invention take into account the physical limitations on various physiological parameters being monitored when weighting ...


4
Clark R Baker Jr, Thomas J Yorkey: Method and apparatus for estimating physiological parameters using model-based adaptive filtering. Nellcor Puritan Bennett Incorporated, Townsend & Townsend & Crew, June 25, 2002: US06411833 (193 worldwide citation)

A method and apparatus for reducing the effects of noise on a system for measuring physiological parameters, such as, for example, a pulse oximeter. The method and apparatus of the invention take into account the physical limitations on various physiological parameters being monitored when weighting ...


5
Clark R Baker Jr, Thomas J Yorkey: Method and apparatus for estimating physiological parameters using model-based adaptive filtering. Nellcor Puritan Bennett Incorporated, Townsend & Townsend & Crew, April 13, 2004: US06721584 (177 worldwide citation)

A method and apparatus for reducing the effects of noise on a system for measuring physiological parameters, such as, for example, a pulse oximeter. The method and apparatus of the invention take into account the physical limitations on various physiological parameters being monitored when weighting ...


6
Clark R Baker Jr, Thomas J Yorkey: Method and apparatus for estimating physiological parameters using model-based adaptive filtering. Nellcor Puritan Bennett Incorporated, Townsend and Townsend and Crew, December 28, 2004: US06836679 (164 worldwide citation)

A method and apparatus for reducing the effects of noise on a system for measuring physiological parameters, such as, for example, a pulse oximeter. The method and apparatus of the invention take into account the physical limitations on various physiological parameters being monitored when weighting ...


7
Clark R Baker Jr: Pulse Oximeter using a virtual trigger for heart rate synchronization. Nellcor Puritan Bennett Incorporated, Townsend and Townsend and Crew, April 28, 1998: US05743263 (163 worldwide citation)

The present invention provides an improved method and apparatus for more accurately calculating and measuring vital information such as oxygen saturation and pulse rate when an ECG signal is not available. Instead of using an ECG R-wave as a trigger to overlay optical pulses, a virtual trigger is ge ...


8
Clark R Baker Jr: Method and apparatus for determining the state of an oximetry sensor. Nellcor Puritan Bennett, Beyer & Weaver, March 7, 2000: US06035223 (156 worldwide citation)

A method for determining whether a sensor is coupled to a tissue sample is described. The sensor is operable to generate a detector signal indicative of absorption of electromagnetic radiation by the tissue sample. A plurality of metric values corresponding to the detector signal are generated. A ne ...


9
Clark R Baker Jr, Edward M Richards: Signal quality metrics design for qualifying data for a physiological monitor. Nellcor Puritan Bennett Incorporated, Fletcher Yoder, February 28, 2006: US07006856 (149 worldwide citation)

A method and a device for determining the quality of signal used for measuring a physiological parameter. One embodiment of the present invention is directed towards a pulse oximeter, where the measured physiological parameter includes a patient's pulse rate and blood oxygen saturation. The signal q ...


10
Clark R Baker Jr: Pulse oximeter using a virtual trigger for heart rate synchronization. Nellcor Puritan Bennett Incorporated, Townsend and Townsend and Crew, January 23, 1996: US05485847 (139 worldwide citation)

The present invention provides an improved method and apparatus for more accurately calculating and measuring vital information such as oxygen saturation and pulse rate when an ECG signal is not available. Instead of using an ECG R-wave as a trigger to overlay optical pulses, a virtual trigger is ge ...