人体血氧饱和度监测方法的研究-严新忠

:2005-10-08,,(,300222)TH776A1002-2376(2005)12-0001-04,,,,,,;;;,,(Hb)(HbO2),98%(HbO2),,,,,()()()(),:SpO2=CHbO2/(CHbO2+CHb)1111,,,,,,,HbHbO2,,,,,112(Hb)(HbO2)(6001000nm),,,()(SpO2),,(SpO2),,,,112005121,,,,,2211,,,(AC);,(DC),(Lamber-beer),,I0,:IDC=I0e-0C0Le-HbO2CHbO2Le-HbCHbL(1)0C0L,(Hb)(HbO2),HbO2CHbO2HbO2,HbCHbHb,LL,IDCIDC-IAC(1):IDC-IAC=IDCe-(HbO2CHbO2+HbCHb)L(2)e:Ln[(IDC-IAC)/IDC]=-(HbO2CHbO2+HbCHb)L(3)1,:Ln[(IDC-IAC)/IDC]IAC/IDC(3):IAC/IDC=-(HbO2CHbO2+HbCHb)L(4),,12,:D1=I1AC/I1DC,D2=I2AC/I2DC,:D1D2=I1AC/I1DCI2AC/I2DC=1HbO2CHbO2+1HbCHb2HbO2CHbO2+2HbCHb(5)(5):SpO2=CHbO2/(CHbO2+CHb):SpO2=2Hb(D1/D2)-1Hb(1HbO2-1Hb)-(2HbO2-2Hb)(D1/D2)(6)2HbO2Hb(805nm),2HbO2=2Hb,:SpO2=1Hb(1Hb-1HbO2)-2Hb(1Hb-1HbO2)D1D2(7):1Hb1HbO22Hb,,1Hb(1Hb-1HbO2)=A,2Hb(1Hb-1HbO2)=B:SpO2=A-BI1AC/I1DCI2AC/I2DC(8)AB2120Lambert-Beer,LC0:0=-1L1nII0=C(9),,,:,D,:2MedicalEquipmentVol118,No112D=-0C(10),()(),,,:D=IAC/IDC,,(Hb)(HbO2),(1=730nm2=850nm),(Hb)(HbO2),(9):10=1HbCHb+1HbO2CHbO2(11)20=2HbCHb+2HbO2CHbO2(12)::SpO2=CHbO2/(CHbO2+CHb)2HbO2Hb(805nm),2HbO2=2Hb,:SpO2=1Hb(1Hb-1HbO2)-2Hb(1Hb-1HbO2)D1D2(14)D=IAC/IDC:SpO2=1Hb(1Hb-1HbO2)-2Hb(1Hb-1HbO2)I1AC/I1DCI2AC/I2DC(15),,,:SpO2=A-BI1AC/I1DCI2AC/I2DC(16)AB213HbO2Hb,,,HbO2Hb,650nm,HbO2Hb,,HbO2Hb,2805nm,,,850950nm,,,,2,660940nm660nmB;940nm805nm,,,940nm,805nm,,730850nm3(NIRS),(HbO2)(Hb),,,()(),,:,3200512:2005-08-29Aeon7200(,210028)Aeon7200,(1),(2),,,,(3),,,,(4),,(5),,,,,,NIRS,,,,,,,33,,,,,A/D,,,,,CDMA4,,[][1]1[M]1,2003151[2]1[M]1,2001161[3],,,1RF[J]1,2003(3):[4]1[J]1,1999,18(2):StudyonMeasuringMethodofHumanOxygenSaturationYANXin-zhong,YANGJing,GUOLue(SchoolofelectronicinformationandautomationofTianjinUniversityofScience&Technology,Tianjin300222,China)Abstract:Oxygensaturationisoneoftheimportantparametersofhumanbody1Themeasurementofoxygensaturationisappliedwidelyinclini2caldiagnosis1Thenon-invasivedetectingprovidesthequick,direct,efficientoperationalreferencetodoctors1Transmittanceoximetryiswelldevel2opedasamonitoringtechnique1However,owingtothelimitationoftheusingscopeofthetransmittancesensor,reflectanceoximetryisnecessaryinsomecircumstances1ThispaperfocusonthediscussionoftheexistingmeasurementofoxygensaturationandmainlyanalyzedthemeasuringprincipleofPulseOxygenSaturation,thedevelopmentofthereflectanceoximetryisalsoreferredatlast1Keywords:Transmittanceoximetry;reflectanceoximetry;PulseOxygenSaturation;photoelectricmeasurement4MedicalEquipmentVol118,No112