1. Ntchito ndi mfundo
Malinga ndi mawonekedwe a spectral oxyhemoglobin (HbO2) ndi kuchepa kwa hemoglobin (Hb) mu kuwala kofiira ndi madera a kuwala kwa infrared, zikhoza kuwoneka kuti kuyamwa kwa HbO2 ndi Hb m'dera la kuwala kofiira (600-700nm) ndi kosiyana kwambiri, ndi mayamwidwe kuwala ndi kuwala kubalalitsa magazi Digiri kwambiri zimadalira magazi machulukitsidwe wa okosijeni;pamene infrared spectral dera (800 ~ 1000nm), mayamwidwe ndi osiyana kwambiri.Mlingo wa kuyamwa kuwala ndi kuwala kubalalitsa magazi makamaka zokhudzana ndi zili hemoglobin.Chifukwa chake, zomwe zili mu HbO2 ndi Hb ndizosiyana pakuyamwa.Sipekitiramu imakhalanso yosiyana, kotero kuti magazi omwe ali mu catheter yamagazi a oximeter amatha kuwonetsa bwino machulukitsidwe a okosijeni wamagazi malinga ndi zomwe zili mu HbO2 ndi Hb, kaya ndi magazi otsika kapena kuchulukitsitsa kwamagazi a venous.Chiyerekezo cha zowonetsera magazi mozungulira 660nm ndi 900nm (ρ660/900) kwambiri zimawonetsa kusintha kwa machulukitsidwe a okosijeni m'magazi, komanso ma metres am'magazi am'magazi (monga Baxter saturation metres) amagwiritsanso ntchito chiŵerengerochi ngati chosinthika.Mu njira yopatsirana yowunikira, kuwonjezera pa hemoglobini yamagazi imatenga kuwala, minofu ina (monga khungu, minofu yofewa, magazi a venous ndi magazi a capillary) imathanso kuyamwa.Koma kuwala kochitikako kukadutsa chala kapena khutu, kuwalako kumatha kuyamwa ndi magazi a pulsatile ndi minyewa ina panthawi imodzimodzi, koma mphamvu ya kuwala yomwe imatengedwa ndi ziwirizo ndi yosiyana.Kuwala kwamphamvu (AC) komwe kumatengedwa ndi pulsatile arterial blood kumasintha ndi kusintha kwa kuthamanga kwa mitsempha ndi kusintha.Kuwala kwamphamvu (DC) komwe kumatengedwa ndi minyewa ina sikusintha ndi kugunda ndi nthawi.Kuchokera apa, chiŵerengero cha kuyamwa kwa kuwala R mu mafunde awiriwa akhoza kuwerengedwa.R=(AC660/DC660)/(AC940/DC940).R ndi SPO2 zimagwirizana molakwika.Malinga ndi mtengo wa R, mtengo wofananira wa SPO2 ukhoza kupezeka pamapindikira okhazikika.
2. Mbali ndi ubwino wa kafukufuku
Chida cha SPO2 chimaphatikizapo zigawo zitatu zazikulu: kafukufuku, gawo la ntchito ndi gawo lowonetsera.Kwa owunikira ambiri pamsika, ukadaulo wozindikira SPO2 ndiwokhwima kale.Kulondola kwa mtengo wa SPO2 wozindikiridwa ndi polojekiti kumakhudzana kwambiri ndi kafukufukuyu.Pali zinthu zambiri zomwe zimakhudza kuzindikira kwa kafukufukuyu.Chipangizo chodziwira, waya wachipatala, ndi ukadaulo wolumikizira womwe umagwiritsidwa ntchito ndi kafukufukuyu zikhudza zotsatira zozindikiridwa.
A·Chida chodziwira
Ma diode otulutsa kuwala ndi ma photodetectors omwe amazindikira ma sign ndi zigawo zazikulu za kafukufukuyu.Ndiwonso chinsinsi chodziwira kulondola kwa mtengo wodziwikiratu.Mwachidziwitso, kutalika kwa kuwala kofiira ndi 660nm, ndipo mtengo womwe umapezeka pamene kuwala kwa infrared ndi 940nm ndikwabwino.Komabe, chifukwa cha zovuta zomwe zimapangidwira kupanga chipangizocho, kutalika kwa kuwala kofiira ndi kuwala kwa infrared komwe kumapangidwa kumapatuka nthawi zonse.Kukula kwa kupatuka kwa kutalika kwa kuwala kudzakhudza mtengo womwe wapezeka.Chifukwa chake, kupanga ma diode otulutsa kuwala ndi zida zowunikira ma photoelectric ndikofunikira kwambiri.R-RUI imagwiritsa ntchito zida zoyeserera za FLUKE, zomwe zili ndi zabwino zonse pakulondola komanso kudalirika.
B · Medical Waya
Kuphatikiza pa kugwiritsa ntchito zinthu zomwe zimatumizidwa kunja (zodalirika potengera kulimba kwamphamvu zotanuka komanso kukana dzimbiri), zimapangidwiranso zotchinga ziwiri, zomwe zimatha kupondereza kusokoneza kwaphokoso ndikusunga chizindikirocho pofananiza ndi wosanjikiza umodzi kapena wopanda chitetezo.
C · Khushoni
Kafukufuku wopangidwa ndi R-RUI amagwiritsa ntchito pad yofewa yopangidwa mwapadera (chala chala), chomwe chimakhala bwino, chodalirika, komanso chosagwirizana ndi khungu, ndipo chingagwiritsidwe ntchito kwa odwala amitundu yosiyanasiyana.Ndipo imagwiritsa ntchito mapangidwe okulungidwa bwino kuti asasokonezeke chifukwa cha kutuluka kwa kuwala chifukwa cha kayendedwe ka zala.
D chojambula chala
Chojambula chala chala chalacho chimapangidwa ndi zinthu zosagwirizana ndi moto za ABS, zomwe zimakhala zamphamvu komanso zosavuta kuwonongeka.Chophimba chotchinga chopepuka chimapangidwanso pachojambula chala, chomwe chimatha kutchingira bwino gwero la kuwala kozungulira.
E·Kasupe
Nthawi zambiri, chimodzi mwazifukwa zazikulu za kuwonongeka kwa SPO2 ndikuti kasupe ndi womasuka, ndipo kukhazikika sikokwanira kuti mphamvu yothina ikhale yosakwanira.R-RUI imagwiritsa ntchito kasupe wa chitsulo cha electroplated high-tension, yomwe ndi yodalirika komanso yolimba.
F terminal
Pofuna kutsimikizira kulumikizidwa kodalirika komanso kukhazikika kwa kafukufukuyu, kuchepetsedwa kwa njira yotumizira ma siginecha kumaganiziridwa pa cholumikizira cholumikizira ndi chowunikira, ndipo njira yapadera yopukutira golide imatengedwa.
G · Njira yolumikizira
Njira yolumikizira kafukufukuyo ndi yofunika kwambiri pazotsatira zoyeserera.Malo a mapepala ofewa adayesedwa ndikuyesedwa kuti atsimikizire malo olondola a transmitter ndi wolandira wa chipangizo choyesera.
H · Ponena za kulondola
Onetsetsani kuti pamene mtengo wa SPO2 uli 70% ~ ~ 100%, cholakwikacho sichidutsa kuphatikizira kapena kuchotsera 2%, ndipo kulondola ndikwapamwamba, kotero kuti zotsatira zowunikira zimakhala zodalirika.
Nthawi yotumiza: Jun-24-2021