EP 2549926 A1 20130130 - INTERFERENCE REDUCTION IN MONITORING A VITAL PARAMETER OF A PATIENT
Title (en)
INTERFERENCE REDUCTION IN MONITORING A VITAL PARAMETER OF A PATIENT
Title (de)
INTERFERENZUNTERDRÜCKUNG BEI DER ÜBERWACHUNG EINES VITALPARAMETERS EINES PATIENTEN
Title (fr)
RÉDUCTION D'INTERFÉRENCE DANS LA SURVEILLANCE D'UN PARAMÈTRE VITAL D'UN PATIENT
Publication
Application
Priority
- EP 10157293 A 20100323
- IB 2011051100 W 20110316
- EP 11716043 A 20110316
Abstract (en)
[origin: WO2011117780A1] The invention relates to a method of and device for monitoring a vital parameter of a patient by emitting light onto tissue of the patient with at least one light source (1, 2) and collecting light which is transmitted through the tissue and/or which is reflected from the tissue. The emitted light is multiplexed according to a predefined multiplexing scheme having a plurality of multiplexing channels, and the collected light is detected according to the predefined multiplexing scheme, resulting in a plurality of detection channels (16, 17, 18, 19). At least one of the multiplexing channels is arranged to be a dark multiplexing channel for which no light is emitted by the at least one light source (1, 2), resulting in a dark detection channel (19), and the signal of this dark detection channel (19) is used for generating a reference signal for reducing interference in the signal of at least one of the other detection channels (16, 17, 18). In this way a versatile and reliable possibility of monitoring a vital parameter of a patient with a high signal-to-interference ratio is provided.
IPC 8 full level
A61B 5/1455 (2006.01)
CPC (source: EP)
A61B 5/14552 (2013.01)
Citation (search report)
See references of WO 2011117780A1
Citation (examination)
- US 5632272 A 19970527 - DIAB MOHAMED K [US], et al
- US 6606511 B1 20030812 - ALI AMMAR AL [US], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2011117780 A1 20110929; CN 102811663 A 20121205; EP 2549926 A1 20130130; JP 2013530728 A 20130801; JP 6184318 B2 20170823
DOCDB simple family (application)
IB 2011051100 W 20110316; CN 201180015210 A 20110316; EP 11716043 A 20110316; JP 2013500626 A 20110316