Title:
水による近赤外吸収を用いたパルス酸素濃度計のモーションアーチファクト除去
Document Type and Number:
Japanese Patent JP2007528276
Kind Code:
A
Abstract:
A method and an apparatus for measuring a physiological parameter, functioning based on obtaining a first signal derived from electromagnetic energy transmitted through a tissue portion at a first wavelength, the first signal including a signal portion corresponding with motion-related events and a signal portion corresponding with arterial pulsation events, where at the first wavelength water is a dominant absorber of electromagnetic energy in the tissue portion; obtaining a second signal derived from electromagnetic energy transmitted through a tissue portion at a second wavelength, the second signal including a signal portion corresponding with motion-related events and a signal portion corresponding with arterial pulsation events, where at the second wavelength hemoglobin is a dominant absorber of electromagnetic energy in the tissue portion; and combining the first signal and the second signal to generate a combined plethysmograph signal, such that the combined signal has a signal portion corresponding with motion-related events that is smaller than that present in the first signal or the second signal.
Inventors:
Debre Cheney, Martin
Baker, Clark Earl. Junior
Baker, Clark Earl. Junior
Application Number:
JP2007502942A
Publication Date:
October 11, 2007
Filing Date:
March 08, 2005
Export Citation:
Assignee:
Nelcoor Puritan Bennett Inc.
International Classes:
A61B5/1495; A61B5/00; A61B5/1455; G01N21/35; A61B5/024
Domestic Patent References:
| JPH06319728A | 1994-11-22 | |||
| JPH05269116A | 1993-10-19 | |||
| JP2001112728A | 2001-04-24 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita