Global Patent Index - EP 2549926 A1

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

EP 2549926 A1 20130130 (EN)

Application

EP 11716043 A 20110316

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)

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