EP 0512987 A4 19930224 - ENHANCED ARTERIAL OXYGEN SATURATION DETERMINATION AND ARTERIAL BLOOD PRESSURE MONITORING
Title (en)
ENHANCED ARTERIAL OXYGEN SATURATION DETERMINATION AND ARTERIAL BLOOD PRESSURE MONITORING
Publication
Application
Priority
- CA 2074956 A 19900130
- US 9000518 W 19900130
Abstract (en)
[origin: WO9111137A1] A noninvasive system and method for monitoring arterial oxygen saturation levels and blood pressure. The apparatus includes a read LED (54) and an infrared LED (56) which are positioned to direct their respective light beams into, or reflected by a patient's body part. A phototransducer device (64) is positioned to receive the light beams (608, 62) which are transmitted through the body part. A pressure cuff (34) surrounds the body part (36) and the LEDs (54, 56). During calibration periods, pressure is applied to the body part (36) and the systolic and mean blood pressures and the arterial oxygen saturation level are determined. The pressure is then released from the body part (36) and another arterial oxygen saturation level is determined and the difference between the two oxygen saturation levels is used as a calibration factor during later monitoring periods to remove the effect of non-arterial oxygen saturation levels on the values obtained during the subsequent monitoring period.
IPC 1-7
IPC 8 full level
A61B 5/00 (2006.01); A61B 5/0225 (2006.01)
CPC (source: EP)
A61B 5/02225 (2013.01); A61B 5/02255 (2013.01); A61B 5/14552 (2013.01); A61B 5/6814 (2013.01); A61B 5/6815 (2013.01); A61B 5/6825 (2013.01); A61B 5/6826 (2013.01); A61B 5/6829 (2013.01); A61B 5/6838 (2013.01)
Citation (search report)
- [YD] US 4846189 A 19890711 - SUN SHUXING [CN]
- [Y] US 4776339 A 19881011 - SCHREIBER JOACHIM M [US]
- [A] US 4883055 A 19891128 - MERRICK EDWIN B [US]
- [E] US 5111817 A 19920512 - CLARK JUSTIN S [US], et al
- See references of WO 9111137A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9111137 A1 19910808; EP 0512987 A1 19921119; EP 0512987 A4 19930224
DOCDB simple family (application)
US 9000518 W 19900130; EP 90908025 A 19900130