1
Steve L Nierlich, Phillip S Palmer, Adnan I Merchant: Medical sensor connector with removable encoding device. Nellcor Puritan Bennett Incorporated, Townsend and Townsend and Crew, August 26, 1997: US05660567 (356 worldwide citation)

A connector for a medical sensor is provided. The connector includes a number of contacts, and includes an electronic device for encoding a characteristic of the medical sensor. The electronic device is insertable into the connector. This simplifies the design of a sensor, which no longer needs to i ...


2
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 (333 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 ...


3
Rodney Chin, Paul Mannheimer, Ross Flewelling: Motion compatible sensor for non-invasive optical blood analysis. Nellcor Puritan Bennett Incorporated, Townsend and Townsend and Crew, January 25, 2000: US06018673 (266 worldwide citation)

A non-invasive optical sensor which uses the motion signal to calculate the physiological characteristic being measured. For pulse oximetry, a least squares or a ratio-of-ratios technique can be applied to the motion signal itself. This is made possible by selecting a site on the patient where varia ...


4
David B Swedlow, Michael J Bernstein, Charles E Porges, James E Luecke, Michael W Nootbaar: Medical diagnostic apparatus with sleep mode. Nellcor Puritan Bennett Incorporated, Townsend and Townsend and Crew, July 20, 1999: US05924979 (265 worldwide citation)

A method and apparatus for conserving power in a medical diagnostic apparatus by using a sleep mode during a monitoring state. The sleep mode allows not only the processor to be put to sleep, but other detection circuitry as well. This is accomplished by not relying on detecting events to awaken the ...


5
Thomas J Yorkey: Method and apparatus for removing artifact and noise from pulse oximetry. Nellcor Puritan Bennett Incorporated, Townsend and Townsend and Crew, July 8, 1997: US05645060 (264 worldwide citation)

Motion compensation is based on analysis of intensity signals received by detectors, without separately measuring a motion signal, without providing feedback to cancel the motion signal and without attempting to mathematically eliminate the motion signal. Instead, the present invention mathematicall ...


6
David B Swedlow, Michael J Bernstein, Charles E Porges, James E Luecke, Michael W Nootbaar: Medical diagnostic apparatus with sleep mode. Nellcor Puritan Bennett Incorporated, Townsend and Townsend & Crew, May 5, 1998: US05746697 (259 worldwide citation)

A method and apparatus for conserving power in a medical diagnostic apparatus by using a sleep mode during a monitoring state. The invention monitors physiological parameters of the patient and enters a sleep mode only after they have been stable for a predetermined period of time. The apparatus is ...


7
Thomas J Yorkey, Paul D Mannheimer: Methods and apparatus for estimating a physiological parameter using transforms. Nellcor Puritan Bennett, Beyer Weaver & Thomas, July 25, 2000: US06094592 (255 worldwide citation)

A method for use in a system for determining a physiological parameter is described. The system has a sensor for transmitting electromagnetic energy of first and second wavelengths toward a tissue sample and detecting the electromagnetic energy after scattering of the electromagnetic energy by the t ...


8
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 (250 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 ...


9
Thomas A Berson, Bryan Olson, Michael E Fein, Paul D Mannheimer, Charles E Porges, David Schloemer: Sensor with signature of data relating to sensor. Nellcor Puritan Bennett Incorporated, Townsend and Townsend and Crew, March 16, 2004: US06708049 (244 worldwide citation)

A sensor has codes useful for a monitor which can be authenticated as accurate. The sensor produces a signal corresponding to a measured physiological characteristic and provides codes which can be assured of being accurate and authentic when used by a monitor. A memory associated with the sensor st ...


10
Joseph Deighan, Steven L Phillips, Linn D Wanbaugh, Philip M Metzler: Compliance meter for respiratory therapy. Nellcor Puritan Bennett, Fulwider Patton Lee & Utecht, February 10, 1998: US05715812 (235 worldwide citation)

A respiratory apparatus (10) operable for delivering a breathable gas to the airway of a patient includes a status monitor (24,26) for determining the status of usage of the unit by the patient and a timer (32) for determining the accumulated time of usage of the unit by the patient.