1
Steven E Sjoquist, John C Daynes: System for producing prioritized alarm messages in a medical instrument. Physio Control Corporation, Christensen O Connor Johnson & Kindness, February 15, 1994: US05285792 (410 worldwide citation)

A defibrillator/monitor (10) employing a message processing routine (60) that controls the way in which information from a plurality of sensing circuits (28) is communicated to an attending physician by output devices (30). In that regard, each of the various conditions monitored by the sensing circ ...


2
Peter W Cheung, Karl F Gauglitz, Scott W Hunsaker, Stephen J Prosser, Darrell O Wagner, Robert E Smith: Method and apparatus for the automatic calibration of signals employed in oximetry. Physio Control Corporation, Christensen O Connor Johnson & Kindness, April 3, 1990: US04913150 (283 worldwide citation)

Under the present invention, a method and apparatus are provided for compensating for the effect temperature variations have on the wavelength of light emitted by the oximeter sensor light sources (40, 42). In pulse oximetry, LEDs are typically employed to expose tissue to light at two different wav ...


3
Robert E Smith: Method and apparatus for processing signals used in oximetry. Physio Control Corporation, Christensen O Connor Johnson & Kindness, January 24, 1989: US04800495 (263 worldwide citation)

The present invention relates to the processing of signals containing information about the pulse rate and oxygen saturation of arterial blood flowing in tissue. These signals have a relatively periodic pulsatile component superimposed upon a varying baseline component. To determine the pulse rate a ...


4
Peter W Cheung, Karl F Gauglitz, Scott W Hunsaker, Stephen J Prosser, Darrell O Wagner, Robert E Smith: Apparatus for the automatic calibration of signals employed in oximetry. Physio Control Corporation, Christensen O Connor Johnson & Kindness, November 9, 1993: US05259381 (234 worldwide citation)

Under the present invention, a method and apparatus are provided for compensating for the effect temperature variations have on the wavelength of light emitted by the oximeter sensor light source (40, 42). In pulse oximetry, LEDs (40, 42) are typically employed to expose tissue to light at two diffe ...


5
Kenneth C Craig Jr, Karl F Gauglitz, G Michael Losh, Lee R Mason, Richard C Nova, James W Taylor, Stephen J Prosser: Method and apparatus for indicating perfusion and oxygen saturation trends in oximetry. Physio Control Corporation, Christensen O Connor Johnson & Kindness, September 26, 1989: US04869253 (219 worldwide citation)

The present invention discloses a method and apparatus for indicating perfusion and oxygen saturation trends in oximetry. In transmittance and reflectance oximetry, LEDs (40, 42) are typically employed to expose tissue to light at two different wavelengths. The light transmitted through, or reflecte ...


6
Stephen J Prosser: Noise insensitive pulse transmittance oximeter. Physio Control Corporation, Christensen O Connor Johnson & Kindness, September 21, 1993: US05246002 (195 worldwide citation)

A noise insensitive pulse transmittance oximeter (11) is disclosed. Two LEDs (21 and 23) are included in the pulse transmittance oximeter. The LEDs alternately emit a red light pulse and an infrared light pulse. A detector (13) detects corresponding red transmittance pulses and infrared transmittanc ...


7
Carlton B Morgan, Daniel Yerkovich, Thomas D Lyster, Eric C Hagen, Douglas H Roberts: Interactive portable defibrillator. Physio Control Corporation, Christensen O Connor Johnson & Kindness, September 9, 1986: US04610254 (186 worldwide citation)

A portable, interactive medical electronic device exemplified by a defibrillator. The device obtains information about a patient's condition, such as ECG and transthoracic impedance data, directly from the patient, and information pertinent to the treatment of the patient indirectly through an opera ...


8
Peter W Cheung, Karl F Gauglitz, Lee R Mason, Stephen J Prosser, Robert E Smith, Darrell O Wagner, Scott W Hunsaker: Method and apparatus for offsetting baseline portion of oximeter signal. Physio Control Corporation, Christensen O Connor Johnson & Kindness, January 9, 1990: US04892101 (182 worldwide citation)

A feedback control system is disclosed for use in processing signals employed in pulse transmittance oximetry. The signals are produced in response to light transmitted through, for example, a finger at two different wavelengths. Each signal includes a slowly varying baseline component representing ...


9
Carlton B Morgan, Daniel Yerkovich, Thomas D Lyster, Eric C Hagen, Douglas H Roberts: Interactive portable defibrillator including ECG detection circuit. Physio Control Corporation, Christensen O Connor Johnson & Kindness, October 28, 1986: US04619265 (161 worldwide citation)

A portable, interactive medical electronic device exemplified by a defibrillator. The device obtains information about a patient's condition, such as ECG and transthoracic impedance data, directly from the patient, and information pertinent to the treatment of the patient indirectly through an opera ...


10
Peter W Cheung, Karl F Gauglitz, Lee R Mason, Stephen J Prosser, Robert E Smith, Darrell O Wagner, Scott W Hunsaker: Feedback-controlled method and apparatus for processing signals used in oximetry. Physio Control Corporation, Christensen O Connor Johnson & Kindness, April 11, 1989: US04819646 (147 worldwide citation)

A feedback control system is disclosed for use in processing signals employed in pulse transmittance oximetry. The signals are produced in response to light transmitted through, for example, a finger at two different wavelengths. Each signal includes a slowly varying baseline component representing ...