1. Umsebenzi kunye nomgaqo
Ngokweempawu ze-spectral ze-oxyhemoglobin (HbO2) kunye nokunciphisa i-hemoglobin (Hb) ekukhanyeni okubomvu kunye nemimandla yokukhanya kwe-infrared, kunokubonwa ukuba ukuxutywa kwe-HbO2 kunye ne-Hb kummandla wokukhanya obomvu (600-700nm) kwahluke kakhulu, kunye nokufunxeka kokukhanya kunye nokukhanya okusasazeka kwegazi.ngelixa kwingingqi ye-infrared spectral (800～1000nm), ukufunxa kwahluke kakhulu.Iqondo lokufunxa ukukhanya kunye nokusasazwa okukhanyayo kwegazi kuhambelana ikakhulu nomxholo we-hemoglobin.Ngoko ke, umxholo we-HbO2 kunye ne-Hb uhlukile ekufunxeni.I-spectrum nayo yahlukile, ngoko ke igazi kwi-catheter yegazi ye-oximeter inokubonisa ngokuchanekileyo ukuzaliseka kwe-oksijini yegazi ngokomxholo we-HbO2 kunye ne-Hb, nokuba i-arterial blood okanye i-venous saturation.Umlinganiselo wegazi elibonisiweyo malunga ne-660nm kunye ne-900nm (ρ660/900) ubonakalisa uvakalelo kakhulu kwiinguqu zokugcwala kweoksijini egazini, kunye neemitha zokugcwala kweoksijini eklinikhi ngokubanzi (ezifana neemitha zokugcwala kwe-Baxter) nazo zisebenzisa lo mlinganiselo njengotshintsho.Kwindlela yokuhambisa ukukhanya, ukongeza kwi-arterial hemoglobin ithatha ukukhanya, ezinye izihlunu (ezifana nolusu, izicubu ezithambileyo, igazi le-venous kunye negazi le-capillary) nazo zinokufunxa ukukhanya.Kodwa xa ukukhanya kwesiganeko kudlula ngomnwe okanye i-earlobe, ukukhanya kunokufunxwa ligazi le-pulsatile kunye nezinye izihlunu ngaxeshanye, kodwa ukukhanya kokukhanya okufunxwa zizo zombini zahlukile.Ukukhanya kokukhanya (AC) okufunxwa yi-pulsatile arterial blood change kunye nokutshintsha kwe-wave wave kunye nokutshintsha.Ukukhanya okukhanyayo (DC) okufunxwa ngezinye izicubu akutshintshi kunye ne-pulse kunye nexesha.Ukusuka kule nto, umlinganiselo wokufunxa ukukhanya kwi-R kumaza amabini angabalwa.R=(AC660/DC660)/(AC940/DC940).I-R kunye ne-SPO2 zihambelana kakubi.Ngokwexabiso le-R, ixabiso elihambelanayo le-SPO2 linokufumaneka kwi-curve eqhelekileyo.
2. Iimpawu kunye neenzuzo zeprobe
Isixhobo se-SPO2 sibandakanya amacandelo amathathu aphambili: i-probe, imodyuli yomsebenzi kunye nenxalenye yokubonisa.Kuninzi lwabahloli kwimarike, itekhnoloji yokubona i-SPO2 sele ikhulile kakhulu.Ukuchaneka kwexabiso le-SPO2 elifunyenwe ngumhloli linxulumene kakhulu neprobe.Kukho izinto ezininzi ezichaphazela ukufunyanwa kweprobe.Isixhobo sokubona, ucingo lwezonyango, kunye neteknoloji yoqhagamshelo esetyenziswa yi-probe iya kuchaphazela isiphumo sobhaqo.
A·Isixhobo sokubhaqa
Iidiode ezikhupha ukukhanya kunye ne-photodetectors ezifumanisa iimpawu zezona zinto ziphambili zeprobe.Kwakhona ngundoqo ekuqinisekiseni ukuchaneka kwexabiso lokubona.Kwithiyori, ubude bokukhanya okubomvu yi-660nm, kwaye ixabiso elifunyenwe xa ukukhanya kwe-infrared kuyi-940nm kufanelekile.Nangona kunjalo, ngenxa yobunzima benkqubo yokwenziwa kwesixhobo, ubude be-wavelength yokukhanya okubomvu kunye nokukhanya kwe-infrared okuveliswayo kuhlala kuphambuka.Ubungakanani bokutenxa kobude bokukhanya buya kuchaphazela ixabiso eliboniweyo.Ngoko ke, inkqubo yokuvelisa i-diode ekhupha ukukhanya kunye nezixhobo zokubona i-photoelectric ibaluleke kakhulu.I-R-RUI isebenzisa izixhobo zokuvavanya ze-FLUKE, ezineenzuzo zombini ngokuchanekileyo kunye nokuthembeka.
B · ucingo lwezonyango
Ukongeza ekusebenziseni izinto eziphuma kumazwe angaphandle (ezithembekileyo ngokwamandla aphezulu e-elastic kunye nokumelana nokubola), ikwayilwe ngokhuseleko oluphindwe kabini, olunokuthi lucinezele ukuphazamiseka kwengxolo kunye nokugcina umqondiso uhambelana xa kuthelekiswa ne-single-layer okanye akukho khuselo.
C · Umqamelo
I-probe eveliswa ngu-R-RUI isebenzisa i-pad epholileyo eyenzelwe ngokukodwa (i-finger pad), ekhululekile, ethembekileyo, kunye ne-non-allergenic edibana nolusu, kwaye ingasetyenziselwa izigulane zemilo eyahlukeneyo.Kwaye isebenzisa uyilo olusongelwe ngokupheleleyo ukuthintela ukuphazamiseka okubangelwa kukuvuza kokukhanya ngenxa yeentshukumo zeminwe.
D ikliphu yomnwe
Ikliphu yeminwe yomzimba yenziwe ngezinto ze-ABS ezikwazi ukumelana nomlilo, ezomeleleyo kwaye akukho lula ukuyonakalisa.Ipleyiti ekhusela ukukhanya iyilwe kwikliphu yomnwe, enokukhusela ngcono umthombo wokukhanya weperipheral.
E·Ntwasahlobo
Ngokuqhelekileyo, esinye sezizathu eziphambili zomonakalo we-SPO2 kukuba intwasahlobo ikhululekile, kwaye i-elasticity ayikwanelanga ukwenza amandla okubamba akwanele.I-R-RUI ithatha i-high-tension electroplated carbon steel spring, ethembekileyo kwaye ihlala njalo.
F terminal
Ukuze kuqinisekiswe uxhulumaniso oluthembekileyo kunye nokuqina kweprobe, ukuthotywa kwenkqubo yokuhanjiswa kwesignali kuqwalaselwa kwi-terminal yokudibanisa kunye ne-monitor, kwaye inkqubo ekhethekileyo ye-terminal efakwe ngegolide yamkelwa.
G· Inkqubo yokudibanisa
Inkqubo yoqhagamshelo lweprobe nayo ibaluleke kakhulu kwiziphumo zovavanyo.Izikhundla zeepads ezithambileyo zilinganiswe kwaye zavavanywa ukuze kuqinisekiswe iindawo ezichanekileyo ze-transmitter kunye nomamkeli wesixhobo sokuvavanya.
H · Ngokuphathelele ukuchaneka
Qinisekisa ukuba xa ixabiso le-SPO2 liyi-70% ~ ~ 100%, impazamo ayidluli i-plus okanye i-2%, kwaye ukuchaneka kuphezulu, ukwenzela ukuba isiphumo sokufumanisa sithembeke ngakumbi.
Ixesha lokuposa: Jun-24-2021