EP 2073694 A4 20101208 - PULSE AMPLITUDE INDEXING METHOD AND APPARATUS
Title (en)
PULSE AMPLITUDE INDEXING METHOD AND APPARATUS
Title (de)
PULSAMPLITUDEN-INDEXIERMETHODE UND GERÄT
Title (fr)
PROCÉDÉ ET APPAREIL POUR INDEXER UNE AMPLITUDE DE POULS
Publication
Application
Priority
US 2006037914 W 20060927
Abstract (en)
[origin: WO2008039195A1] The invention is method and apparatus for determining a physiological characteristic by detecting the intensity of light following tissue absorption at two wavelengths, estimating the pulse amplitude and indexing a calculated physiological characteristic to the estimated pulse amplitude. In one embodiment, the ratio of logarithms of absorbance signal amplitude is indexed to the pulse amplitude to improve the accuracy of arterial oxygen saturation as determined by a pulse oximeter.
IPC 8 full level
A61B 5/00 (2006.01)
CPC (source: EP)
A61B 5/14551 (2013.01); A61B 5/1495 (2013.01); A61B 2560/0223 (2013.01)
Citation (search report)
- [A] US 2005197549 A1 20050908 - BAKER CLARK R JR [US]
- [A] US 2005250998 A1 20051110 - HUIKU MATTI [FI]
- See references of WO 2008039195A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2008039195 A1 20080403; EP 2073694 A1 20090701; EP 2073694 A4 20101208; JP 2010504803 A 20100218
DOCDB simple family (application)
US 2006037914 W 20060927; EP 06804239 A 20060927; JP 2009530316 A 20060927