Pulse Oximeters

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Pulse Oximeters

• Juliana Bernal-Ostos
• David Boy
• Katharine Clark
• Lara Clark
• Kristen Dorsey

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Pulse Oximeter Timeline

• 1860s- Hemoglobin is discovered
• 1874- First spectrometer used
• 1929- Millikan begins construction on a blood
  oxygen saturation meter
• 1939- During WWII, the need for oxygen meters is
  recognized
• 1940- Millikan completes the first oxygen meter

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U.S. Patent 2,358,992

• Oxygen Meter
• Filing Date June 28th, 1941
• Issued September 26th, 1944
• Inventor Glenn A. Millikan
• What it does Provides a means by which the
  depletion of oxygen can be continuously observed,
  so that appropriate measures may be taken before
  the danger point is reached.
• Users Medical personnel and Aviators

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Original Design for Millikans Oxygen Meter
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The Evolution of Pulse Oximeters
and Monitors of the Optical Adsorption Spectra in
Oxygenated and Deoxygenated Blood

• Early Oxygen Meters
• Analog readings
• Stationary
• Inaccurate
• Subject to large degrees of error

• Advanced Specialty Pulse Oximeters
• Digital readings
• Small and Portable
• Specialized and Accurate

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U.S. Patent 6,662,033

• Pulse oximeter and sensor optimized for low
  saturation
• Filing Date June 14, 2001
• Issued December 9, 2003
• Inventors Casciani, James R. Mannheimer, Paul
  D. Nierlich, Steve L. Ruskewicz, Stephen J.
• What it Does Measures blood oxygen saturation in
  a fetus with a fetal pulse oximeter sensor
• Users Maternity Ward

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Fetal Pulse Oximeter

• Reduces need for Caesarean sections
• Custom wavelength
• Special placement

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References

• TechEN, inc. NIRS Optix. http//www.nirsoptix.com
  /historical.htm
• 330 Retrieved from European Patent Office on
  1/24/04. http//v3.espacenet.com/textdoc?DBEPODO
  CIDXUS2358992
• 300 Retrieved from European Patent Office on
  1/24/04. http//v3.espacenet.com/textdoc?CYepLG
  enF4IDXUS2002082489DBEPODOC