Izazinzulu ziye zayila i-chest-laminated, i-ultrathin, i-100 yepesenti eyolulayo ye-cardiac sensing device (i-e-tattoo) ukujonga imisebenzi yentliziyo. Isixhobo sinokulinganisa i-ECG, i-SCG (i-seismocardiogram) kunye namaxesha exesha lentliziyo ngokuchanekileyo nangokuqhubekayo ixesha elide lokubeka iliso. igazi uxinzelelo.
Isifo sentliziyo (s) ngoyena nobangela uphambili wokusweleka kwihlabathi jikelele. esweni Ukusebenza kwentliziyo yethu kunokunceda ukusa kumkhamo othile ekuthinteleni izifo zentliziyo. Uvavanyo lwe-ECG (i-electrocardiogram) ilinganisa umsebenzi wombane wentliziyo yethu ngokulinganisa izinga lokubetha kwentliziyo kunye nesingqisho ukusixelela ukuba intliziyo yethu isebenza ngokuqhelekileyo. Olunye uvavanyo olubizwa ngokuba yi-SCG (seismocardiography) yindlela esekwe kwisensor ye-accelerometer esetyenziswa ukurekhoda ukungcangcazela komatshini wentliziyo ngokulinganisa ukungcangcazela kwesifuba okubangelwa kukubetha kwentliziyo. I-SCG ifumana ukubaluleka kwiklinikhi njengomlinganiselo owongezelelweyo kunye ne-ECG ukubeka iliso kunye nokuqinisekisa ukungahambi kakuhle kwentliziyo ngokuchaneka okuphuculweyo kunye nokuthembeka.
Izixhobo ezinxitywayo ezifana nokuba sempilweni kunye nabalandeleli bezempilo ngoku ziyindlela ethembisayo nedumileyo yokubeka iliso kwimpilo yethu. Ukujonga imisebenzi yentliziyo, zimbalwa izixhobo ezithambileyo ezikhoyo ezilinganisa i-ECG. Nangona kunjalo, iisenso ze-SCG ezikhoyo namhlanje zisekwe kwii-accelerometers eziqinileyo okanye ii-membrane ezinganwebekiyo zizenza zibe bulky, zingasebenzi kwaye zingakhululeki ukunxiba.
Kuphononongo olutsha olupapashwe ngoMeyi 21 ngo Inzululwazi ePhambili, abaphandi bachaza isixhobo esitsha esinokulanywa kwisifuba somntu (kungoko sibizwa ngokuba yi- i-e-tattoo) kwaye ubeke iliso kwimisebenzi yentliziyo ngokulinganisa i-ECG, i-SCG kunye nezihlandlo zexesha lenhliziyo. Esi sixhobo sikhethekileyo si-ultrathin, sikhaphukhaphu, siyanwebeka kwaye sinokubekwa phezu kwentliziyo yomntu ngaphandle kwesidingo seteyiphu ixesha elide ngaphandle kokubangela intlungu okanye ukungahambi kakuhle. Isixhobo senziwe ngomnatha wenyoka wamaphepha afumanekayo ngokurhweba epolymer ye-piezoelectric ebizwa ngokuba yi-polyvinylidene fluoride ngokusebenzisa indlela elula, engabizi kakhulu. Le polymer inepropati ekhethekileyo yokuvelisa intlawulo yombane ekuphenduleni uxinzelelo lomatshini.
Ukukhokela esi sixhobo, indlela yolungelelwaniso lomfanekiso we-3D yenza intshukumo yesifuba ephuma ekuphefumleni nakwintshukumo yentliziyo. Oku kunceda ukufumana eyona ndawo ilungileyo yokuva iintshukumo zesifuba ukunyusela isixhobo. Inzwa ye-SCG ethambileyo idityaniswe kunye nee-electrode zegolide ezinwebekayo kwisixhobo esinye ngokwaso senza isixhobo semowudi emibini enokulinganisa i-ECG kunye ne-SCG ngokusebenzisa i-electro- kunye ne-acoustic cardiovascular sensing (EMAC). I-ECG isetyenziswa ngokuqhelekileyo ukubeka iliso kwintliziyo yomntu, kodwa xa idibaniswa nokurekhodwa kweempawu ze-SCG, ukuchaneka kwayo kuphucula .. Ukusebenzisa le nzwa ye-EMAC kunye nokwenza imilinganiselo ehambelanayo, amaxesha ahlukeneyo exesha lentliziyo inokukhutshwa ngempumelelo kubandakanywa nexesha le-systolic. Kwaye, kwabonwa ukuba ixesha le-systolic linonxulumano olubi oluluqilima kunye uxinzelelo lwegazi, ngaloo ndlela i-beat-to-beat pressure inokuqikelelwa kusetyenziswa esi sixhobo. Ulungelelwaniso olomeleleyo lwabonwa phakathi kwexesha le-systolic kunye noxinzelelo lwegazi lwe-systolic / diastolic. I-smartphone inika amandla ekude esi sixhobo.
Isixhobo esitsha esifakwe kwisifuba esichazwe kwisifundo esikhoyo sibonelela ngendlela elula yokubeka iliso kwixinzelelo lwegazi ngokuqhubekayo kunye nokungathinteli. Esi sixhobo yi-ultrathin, i-ultralight, i-soft, i-100 yepesenti enwebekayo ye-mechano-acoustic sensor enobuzwe obuphezulu kwaye inokuveliswa ngokulula. Izinto ezinxitywayo ezinjalo ezinokunxitywa ukujonga imisebenzi yentliziyo ngaphandle kokufuna ukutyelela ugqirha zinokuthembisa ngokuthintela izifo zentliziyo.
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{Unokufunda iphepha lokuqala lophando ngokunqakraza ikhonkco le-DOI elinikwe ngezantsi kuluhlu lwemithombo ecatshulweyo (s)}
Umthombo (s)
Ha T. et al. 2019. I-Chest-Laminated Ultrathin kunye ne-E-Tattoo eyolulayo yoMlinganiselo we-Electrocardiogram, i-Seismocardiogram, kunye ne-Cardiac Time Intervals. iNzululwazi ePhakamileyo. https://doi.org/10.1002/advs.201900290
