1
Daniel S Goldberger, Timothy A Turley, Kirk L Weimer: Universal pulse oximeter probe. BOC Health Care, Roger M Rathbun, Larry R Cassett, R Hain Swope, October 5, 1993: US05249576 (422 worldwide citation)

The universal pulse oximeter probe [of the present invention] utilizes an inexpensive sensor connector configuration to enable the cable section of the probe to be used numerous times. The [sensor connector is mechanically simple and electrically reliable to interconnect the sensor elements with the ...


2
Jonas A Pologe: Arterial blood monitoring probe. Ohmeda, Roger M Rathbun, Larry R Cassett, James M Graziano, March 29, 1994: US05297548 (264 worldwide citation)

This arterial blood monitoring system takes advantage of the basic statistical property that arterial blood contains a plurality of dominant absorbers, whose measured light absorption spectra appear as a constant over a short interval of time. By measuring the transmitted light as it varies with art ...


3
Eric N Johnson: Blood constituent monitoring apparatus and methods with frequency division multiplexing. The BOC Group, Roger M Rathbun, Larry R Cassett, January 31, 1989: US04800885 (230 worldwide citation)

Apparatus and method for measuring the level of a constituent such as oxygen in the blood of a living subject. Light at a plurality of wavelengths is emitted and directed through the patient's body to a photodetector. The amplitude of the emitted light at each wavelength is varied in accordance with ...


4
Oliver A Posso, Julie A Reichert: Multi-function menu selection device. Ohmeda, Roger M Rathbun, Larry R Cassett, James M Graziano, May 6, 1997: US05627531 (207 worldwide citation)

The menu selection device uses a combination of the rotary position of a rotary optical encoder and the operation of a coaxially mounted push-button switch to enable the user to progress through various layers of a hierarchical menu system. The rotary position of the shaft translates to a menu categ ...


5
Jonas A Pologe, David W Trumble: System for pulse oximetry SPO.sub.2 determination. Ohmeda, Roger M Rathbun, Larry R Cassett, James M Graziano, April 2, 1996: US05503148 (201 worldwide citation)

The improved pulse oximeter preprocesses the sets of red and infrared signals received from the probe. The set of pairs of processed red and infrared data points are fitted to a linear equation to compute the slope of the best fit line through these data points and account for noise in both of these ...


6
Alan D Martin: Blood parameter monitoring apparatus and methods. The BOC Group, Larry R Cassett, Roger M Rathbun, July 11, 1989: US04846183 (200 worldwide citation)

A pulse oximeter or plethysmographic device utilizes light varying in intensity at a predetermined carrier frequency. A passive resonant circuit having a resonant frequency substantially equal to the carrier frequency is connected between the photodetector and the first amplifier. The resonant circu ...


7
Alan D Martin: Blood monitoring apparatus and methods with amplifier input dark current correction. The BOC Group, Larry R Cassett, Roger M Rathbun, November 1, 1988: US04781195 (185 worldwide citation)

In photoelectric apparatus such as a pulse oximeter for monitoring a parameter of the blood in a living organism, a dark current correction signal is applied to the input at the preamplifier. The correction signal is substantially equal in magnitude but opposite in sense to the photodetector output ...


8
Daniel S Goldberger, Timothy A Turley, Kirk L Weimer: Pulse oximeter probe connector. Ohmeda, Roger M Rathbun, Larry R Cassett, James M Graziano, February 7, 1995: US05387122 (177 worldwide citation)

The pulse oximeter probe uses an inexpensive connector to electrically interconnect the sensor elements with the pulse oximeter. One segment of the probe connector contains a set of connector pins that are wired to the sensor elements. Another segment of the probe connector is equipped with a mating ...


9
Mark Hibl: Disposable sensor holder. Ohmeda, Roger M Rathbun, October 6, 1998: US05817010 (170 worldwide citation)

The present invention provides an oximeter sensor holder that includes first and second lateral members for receiving the sensor, a living hinge connecting proximal ends of the first and second lateral members, and first and second press tabs for moving the first and second lateral members about the ...


10
Robert A Nichols, David R Tobler: Probe monitoring system for oximeter. The BOC Group, Roger M Rathbun, Larry R Cassett, August 5, 1986: US04603700 (158 worldwide citation)

A monitor system for an oximeter that sequentially tests the operative conditions of light emitting devices of the oximeter, the light detector of the oximeter, and the reference voltage of the oximeter. Data processing means is responsive to the determined test values for indicating the occurrence ...