Kunzwisisa SpO2 Sensor Testing

NaAndrew Clay, Fluke Biomedical

Chinyorwa cheMhariri: Ichi chinyorwa, chakanyorwa muna 2015, chinoramba chiri chinonyanya kuverengwa24×7's saiti.Tinovimba inogona kukupa iwe ruzivo rwaunoda paunenge uchiyedza SpO₂sensors.

Monitoring SpO₂, chiyero chekuzara kweokisijeni muropa, chave chiero chekutarisira varwere pasi rose.Anenge ese murwere wekutarisa ane yakavakirwa-mukati kana inosungirirwa kugona kutarisa ichi chakakosha chiratidzo.SPO₂inzira isina kunanga uye isingapindiki yekuyera kuzara kweokisijeni muropa.Inofanirwa kuyedzwa pamwe chete nemamwe maparamita emuviri panguva yekudzivirira kana kugadzirisa kugadzirisa pane chekutarisa murwere, kana chigadziriso chega.

The Technology

SpO₂inoyerwa parinoperera, kazhinji munwe, uye chiyero chimwe chehutano hwemwoyo nehurongwa hwekufema.Pulse oximeter inoyera kuzara kweokisijeni muropa remurwere.Mudziyo uyu une dzvuku uye infrared light source, mafoto detector, uye probe yekufambisa chiedza kuburikidza ne translucent, pulsating arterial bed, kazhinji kumuromo wemunwe kana kwenzeve.Oxygenated hemoglobin (O₂Hb) uye deoxygenated hemoglobin (HHb) inotora tsvuku uye infrared chiedza zvakasiyana.Chiyero chekuzara kwe hemoglobin muropa re arterial inogona kuverengerwa nekuyera kunyudzwa kwechiedza kunokonzerwa ne arterial blood flow pulsations.

Zvinhu zvakasiyana-siyana zvinogona kukanganisa kurongeka kweSPO₂kuyerwa, kusanganisira mamiriro eganda, pigment, maronda, mavanga, ma tatoo, ganda rezvipikiri, hypothermia, kupererwa neropa, mishonga, kukanganiswa kwechiedza, uye kufamba.

SPO₂inopimwa pachishandiswa sensor, kazhinji inonamirwa pamunwe wemurwere.Pane nzira mbiri dzeSpO₂tekinoroji: transmissive uye inofungidzira.Nzira yekufambisa ndiyo inonyanya kushandiswa pazviviri izvi.Sezvinoratidzwa mumufananidzo 1, tekinoroji inofambisa mwenje mutsvuku uye infrared kuburikidza nechigunwe ichienda kune foto detector.

Mufananidzo 1: Transmissive tekinoroji, iyo inowanzoshandiswa fomu yekiriniki pulse oximetry.Click to enlarge.Imwe nzira inoshandiswa kuSPO₂inovimba ne reflective tekinoroji.Sezvinoratidzwa muMufananidzo 2, nzira iyi ine inotumira uye inogamuchira mundege imwechete.Reflective SPO₂sensors inogona kuiswa kune dzimwe nzvimbo dze anatomy kupfuura chigunwe, senge huma.

Mufananidzo 2: Reflective tekinoroji, imwe nzira yekuyera kuyerwa.Dzvanya kuti ukudze

Testing

Imwe neimwe pulse oximetry mudziyo inogadzira inofanirwa kuona chokwadi chemudziyo wavo nekuita bvunzo dzevanhu.Sokutsanangura kunoita Dennis J. McMahon mubepa rake jena, “Hakuna Chinhu Chakadai seSpO.₂Simulator,”¹mu "controlled controlled desaturation study, vanhu vanozvipira vanofema nhevedzano yegasi musanganiswa wekuderera kweokisijeni yemukati panguva yakabatana kune prototype monitor."Arterial blood samples inobva yatorwa kubva kuzvidzidzo kuyera kuzara kweokisijeni murabhoritari yekiriniki.

Mhedzisiro yekuyedzwa uku igirafu yeiyo chaiyo modhi yeSPO₂sensor uye monitor.Iyi girafu inodaidzwa seR-curve.Sezvinoratidzwa muMufananidzo 3, R-curve inotsanangura hukama huri pakati pehumwe chiyero chechiedza chitsvuku uye infrared maringe nekuonekwa kweokisijeni yakaunganidzwa panguva yekuedzwa kwevanhu.Iyo R-curve inobva yashandiswa mune firmware kune chimwe chiridzwa uye cheSPO₂vaedzi.

Mufananidzo 3: Muenzaniso weR-curve, inobatanidza O2 saturation neR kukosha.Dzvanya kuti uwedzere maSimulators, calibrator, uye anoshanda testers emapulse oximeter anotsanangurwa mune ISO standard 80601-2-61.Kusiyana nemamwe marudzi emidziyo yekurapa, pulse oximeter haina kugadzirwa kuti ienzaniswe kunze kwefekitori.Iko hakuna nzira dzinogamuchirwa dzekuona kurongeka kwakaringana kwepulse oximeter kunze kwekuyedzwa kwevanhu.Yakawanda SpO₂midziyo yekuyedza pamusika iri muchikamu chebasa rekuedza.

Maererano naTobey Clarke mubhuku rakeKuvimbiswa Kwehutano hweMichina Yezvokurapa, vatarisi vevarwere vanofanira kuongororwa kushanda zvishoma gore negore.²Vazhinji vanoshanda vanoedza vanoedza iyo SPO₂sensor optically.Izvi zvinobvumira kuyedzwa kwe sensor, tambo, uye yekutarisa.Vamwe vanoshanda vanoedza vanoisa chiratidzo zvakananga kune chekutarisa, vachingoyedza cheki.Vamwe vanogona kuedza tambo kuti ienderere mberi.Mazhinji anoshanda testers anoedza transmissive tekinoroji, kwete kuratidza.

Yakajairika mafambiro ekuyedza murwere anotarisisa kana kumira-yega SPO₂kutarisa kunosanganisira kutarisa mamiriro emuviri, kuita bvunzo dzekuchengetedza magetsi, kuita chero mugadziri-anokurudzirwa kudzivirira kuchengetedza, kuita bvunzo dzekuita (kusanganisira maalarm nemimwe bvunzo chaiyo), uye, pakupedzisira, kunyora mhinduro dzekuyedza.

Andrew Clay maneja wekutengesa zvigadzirwa weFluke Biomedical, Everett, Wash.Chinyorwa ichi chakatorwa kubva kuFluke Biomedical whitepaper.

References

1. McMahon DJ.Iko hakuna chinhu chakadai seSPO₂simulator.Everett, Wash: Fluke Biomedical;2013. Inowanikwa pahttp://www.flukebiomedical.com/Biomedical/usen/Events/Promos/sp02-whitepaper-SOC.Yakasvika muna Ndira 15, 2015.

2. Clark JT, Lane M, Rafuse L.Medical Equipment Quality Assurance: Inspection Program Development uye Matanho.Everett, Wash: Fluke Biomedical;2008:123.