1
Russell L Trimble, Roger J Dolida, Frederick R Rose, Philip M Metzler: Nasal puff with adjustable sealing means. Puritan Bennett Corporation, Hovey Williams Timmons & Collins, November 8, 1988: US04782832 (415 worldwide citation)

An improved nasal puff assembly is provided which is of particular benefit in the treatment of obstructive sleep apnea and which is characterized by a gas-delivery puff which fits only in the nose of the patient and is therefore of relatively small size and can be comfortably worn. The nasal puff of ...


2
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 ...


3
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 ...


4
Roger A Gruenke, Russell L Trimble: Inspiratory airway pressure system using constant pressure and measuring flow signals to determine airway patency. Puritan Bennett Corporation, Fulwider Patton Lee & Utecht, August 27, 1996: US05549106 (266 worldwide citation)

An apparatus and method for facilitating the respiration of a patient are disclosed which are particularly useful in treating mixed and obstructive sleep apnea and certain cardiovascular conditions, among others, by increasing nasal air pressure delivered to the patient's respiratory passages just p ...


5
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 ...


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 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 ...


7
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 ...


8
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 ...


9
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 ...


10
Edwin B Merrick: Artificially induced blood pulse for use with a pulse oximeter. Puritan Bennett Corporation, Fish & Richardson, November 28, 1989: US04883055 (255 worldwide citation)

An artificially induced blood pulse used for measuring oxygen saturation in arterial blood is produced by a cuff, wrapped around a body member having an artery upstream from a testing site, when a squeezing pulse is applied by the cuff to the body member.