Unstable SpO2 Signals hauv LOSSIS? Cov khoom siv pov tseg pov tseg hloov kho dua tshiab daws cov kev sib tw qis Perfusion
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Intraoperative Hypoperfusion: Qhov Kev Sib Tw Tseem Ceeb rau Kev Nyab Xeeb Kev Nyab Xeeb
Thaum lub sij hawm siv tshuaj loog, kev saib xyuas cov pa oxygen yog qhov tseem ceeb rau kev ntsuas tus neeg mob txoj kev ua pa thiab cov xwm txheej ntawm cov hlab ntsha. Txawm li cas los xij, cov kws kho mob tshuaj loog feem ntau ntsib teeb meem nyuaj: cov tshuaj oxygen ib txwm muaj kev tawm tsam los muab kev nyeem ntawv ruaj khov thiab txhim khu kev qha thaum cov neeg mob nyob hauv lub xeev hypoperfused.
Hypoperfusion yog tshwm sim nyob rau hauv ntau yam kev phais: tsis txaus circulating ntim vim poob loj heev ntawm cov ntshav, peripheral vasoconstriction tshwm sim los ntawm intraoperative hypothermia, ntshav txaus redistribution tom qab noj cov tshuaj vasoactive, thiab dag zog circulatory kev pab cuam thaum lub sij hawm cardiopulmonary bypass. Nyob rau hauv cov xwm txheej no, cov ntshav peripheral tau txo qis, thiab cov tshuab kho qhov muag ntawm cov kev sojntsuam ib txwm muaj feem ntau tsis tuaj yeem ntes cov cim pulse yoj txaus, ua rau muaj cov cim tsis sib xws, nyeem qeeb, lossis lub tswb nrov.
Qhov kev saib xyuas tsis ruaj khov no tsis tsuas yog cuam tshuam rau tus kws kho mob tshuaj loog tiag tiag - lub sijhawm ntsuas ntawm tus neeg mob tus mob tab sis kuj tseem tuaj yeem ncua kev tshawb pom ntxov ntawm cov xwm txheej hypoxic. Cov kev tshawb fawb tau pom tias nyob rau hauv cov xwm txheej hypoperfusion, lub teeb liab poob ntawm qee qhov kev sojntsuam tuaj yeem ncav cuag ntau dua 30%, txwv tsis pub lawv muaj peev xwm ua kom muaj kev nyab xeeb ntawm kev ua haujlwm.
Kev kho qhov muag kho qhov muag: Tus nqi tseem ceeb ntawm Dual - wavelength LEDs
Lub hauv paus ntawm kev saib xyuas cov ntshav oxygen yog Beer-Lambert Txoj Cai: oxyhemoglobin thiab deoxyhemoglobin muaj cov yam ntxwv sib txawv rau qhov sib txawv ntawm lub teeb. Niaj hnub nimno cov ntshav cov pa oxygen probes siv dual - wavelength LED teeb qhov chaw tsim, siv 660nm liab lub teeb thiab 940nm nyob ze - lub teeb infrared. Los ntawm kev xam qhov tseeb ntawm lub teeb haum ntawm ob lub wavelengths, cov ntshav oxygen saturation nqi yog kwv yees.
Kev hloov kho kho qhov muag ntawm lub cim tshiab kev sojntsuam yog qhov tseem ceeb hauv peb yam: Ua ntej, kev siv hluav taws xob thiab kev ruaj ntseg ntawm lub teeb pom kev zoo ntawm LED teeb pom kev zoo, kom ntseeg tau tias lub teeb hluav taws xob txaus tawm txawm tias tsis muaj teeb meem teeb meem; Thib ob, qhov rhiab heev ntawm silicon photodiode receiver yog optimized, ua kom pom qhov qis siv rov qab teeb liab; Thib peb, lub teeb liab ua algorithm yog txhim kho, zoo sib txawv arterial pulsation signals los ntawm venous cuam tshuam thiab cov khoom siv dag zog.
Khoom siv thiab txheej txheem Innovation: Ua kom muaj kev ruaj ntseg ntawm kev sib cuag
Ntxiv nrog rau kev hloov kho qhov muag kho qhov muag, cov khoom siv thiab cov txheej txheem ntawm kev sojntsuam -daim tawv nqaij sib txuas yog qhov tseem ceeb sib npaug. Ib txwm nruj yas sojntsuam feem ntau muaj lub teeb to hauv cov neeg mob uas tsis tshua muaj perfusion vim tsis zoo adhesion, ua rau txo qis hauv cov teeb liab zoo. Kev sojntsuam tshiab siv kev kho mob-qib mos ua npuas ncauj thiab TPU cov ntaub ntawv sib xyaw, muab ntau yam zoo.
Los ntawm kev xav txog biomechanical, lub ntsej muag ua npuas ncauj hloov mus rau cov duab ntawm tus neeg mob lub ntsis ntiv tes, ua kom lub ntsej muag nruj ntawm lub teeb pom kev ntawm LED thiab lub photodetector, txo qhov cuam tshuam ntawm lub teeb ambient. Nyob rau tib lub sijhawm, cov khoom siv elastic modulus tau ua kom zoo kom muaj kev sib cuag ruaj khov yam tsis muaj kev cuam tshuam ntxiv rau peripheral ntshav txaus vim yog compression ntau dhau.
Kev nyab xeeb ntawm cov khoom tseem ceeb sib npaug. Cov ntaub ntawv ua raws li ISO 10993 biocompatibility qauv xyuas kom meej tias qhov kev sojntsuam yuav tsis ua rau daim tawv nqaij ua xua lossis tshuaj lom neeg thaum lub sijhawm phais ntev. Cov yam ntxwv no tshwj xeeb yog qhov tseem ceeb rau cov kev phais nyuaj uas yuav tsum tau saib xyuas tas li ntau dua 72 teev.
Cable Design thiab Clinical Applicability: Hauv chav ua haujlwm ib puag ncig, kev teeb tsa ntawm cov khoom siv saib xyuas thiab kev tswj xyuas cable ncaj qha cuam tshuam rau kev sojntsuam kev ruaj ntseg. Qhov kev sojntsuam tshiab muaj ntau txoj kev xaiv ntev cable (tus qauv 1-meter thiab txuas ntxiv 3-meter versions), tso cai rau kev hloov pauv ntau dua ntawm cov tshuab tshuaj loog, IV sawv ntsug, thiab saib xyuas. Cov kab hluav taws xob loj loj txo qhov kev pheej hmoo ntawm kev sojntsuam tshem tawm vim kev sib tw thiab ua kom yooj yim rau kev npaj chaw ua haujlwm rau pab pawg phais.
Lub connector nta kub-plated contacts thiab shielded cable tsim, zoo suppressing electromagnetic cuam tshuam los ntawm cov khoom siv xws li electrosurgical units thiab siab -frequency coagulation li, kom ntseeg tau tias cov teeb liab kev ncaj ncees. Kub-swapping functionality tso cai rau kev sojntsuam hloov thaum lub cuab yeej khiav, tsis muaj kev cuam tshuam kev soj ntsuam tas li.
Cov lus pom zoo xaiv thiab kev xyaum kho mob
Rau chav khiav hauj lwm qis -perfusion soj ntsuam xav tau, cov tsev kho mob yuav tsum tsom rau cov kev qhia hauv qab no thaum xaiv cov cuab yeej: pulse oximetry raug qhov ntau, muaj peev xwm paub txog lub teeb liab nyob rau hauv qis perfusion, qib biocompatibility ntawv pov thawj, cable ntev configuration, thiab compatibility nrog cov khoom siv saib xyuas uas twb muaj lawm.
Cov ntaub ntawv kho dua tshiab rau cov khoom siv hluav taws xob pov tseg oximetry probes, los ntawm kev ua kom zoo tshaj plaws ntawm qhov kho qhov muag, kev sib txuas lus, thiab kev tsim cable, muab cov kev daws teeb meem ruaj khov thiab txhim khu kev qha rau qis -perfusion xyuas, thiab raug siv tau hauv cov chav ua haujlwm ntau ntxiv.
