Title:
NIRベース血液検体判定中のスペクトル効果の最小化
Document Type and Number:
Japanese Patent JP2004510146
Kind Code:
A
Abstract:
A method and apparatus for minimizing confounding effects in a noninvasive in-vivo spectral measurement caused by fluctuations in tissue state monitors a selected tissue state parameter spectroscopically and maintains the selected parameter within a target range, at which spectral effects attributable to the changes in the selected parameter are minimized. The invention includes both active and passive control. A preferred embodiment of the invention provides a method and apparatus for minimizing the confounding effects in near IR spectral measurements attributable to shifts in skin temperature at a tissue measurement site. Spectroscopic monitoring of skin temperature at the measurement site provides near-instantaneous temperature readings by eliminating thermal time constants. A thermistor positioned at the measurement site provides active control. The spectrometer and the temperature control device are incorporated into a single instrument for noninvasive measurement of blood glucose concentration.
Inventors:
Maccare Wicks Mercy Earl
Mats Mutua
Blank thomas bee
Monfre Stefan El
Lucci Timothy L
Mats Mutua
Blank thomas bee
Monfre Stefan El
Lucci Timothy L
Application Number:
JP2002529955A
Publication Date:
April 02, 2004
Filing Date:
September 18, 2001
Export Citation:
Assignee:
Sensis Medical Ink
International Classes:
G01N21/27; A61B5/00; A61B5/01; A61B5/145; A61B5/1455; A61B5/1495; G01N21/35; (IPC1-7): G01N21/27; A61B5/00; A61B5/145; G01N21/35
Domestic Patent References:
| JPH07508426A | 1995-09-21 |
Foreign References:
| US5007423A | 1991-04-16 | |||
| US5007423A | 1991-04-16 |
Attorney, Agent or Firm:
Masao Sawada