Izazinzulu ziye zayila isixhobo esitsha se-elektroniki esinomfanekiso wesifuba, esibhityileyo kakhulu, esinokolulwa nge-100% ukuze sijonge imisebenzi yentliziyo. Esi sixhobo sinokulinganisa i-ECG, i-SCG (i-seismocardiogram) kunye nexesha lentliziyo ngokuchanekileyo nangokuqhubekayo ixesha elide ukuze sijonge uxinzelelo lwegazi.
Izifo zentliziyo zezona zibangela ukufa kwihlabathi liphela. Ukujonga ukusebenza kwentliziyo yethu kunokunceda ngandlela ithile ekuthinteleni izifo zentliziyo. Uvavanyo lwe-ECG (electrocardiogram) lulinganisa umsebenzi wombane wentliziyo yethu ngokulinganisa izinga lentliziyo kunye nesigqi ukuze lusixelele ukuba intliziyo yethu isebenza kakuhle na. Olunye uvavanyo olubizwa ngokuba yi-SCG (seismocardiography) yindlela esekelwe kwi-accelerometer sensor esetyenziselwa ukurekhoda ukungcangcazela kwentliziyo ngokulinganisa ukungcangcazela kwesifuba okubangelwa kukubetha kwentliziyo. I-SCG iyanda ukubaluleka kwiklinikhi njengenyathelo elongezelelweyo kunye ne-ECG yokujonga nokuqinisekisa iingxaki zentliziyo 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.
Kwisifundo esitsha esapapashwa ngoMeyi 21 kwi- Advanced Science , abaphandi bachaza isixhobo esitsha esinokubekwa esifubeni somntu (yiyo loo nto sibizwa ngokuba yi- e-tattoo ) kwaye sijonge imisebenzi yentliziyo ngokulinganisa i-ECG, i-SCG kunye nexesha lentliziyo. Esi sixhobo sikhethekileyo sincinci kakhulu, silula, siyasolulwa kwaye singabekwa phezu kwentliziyo yomntu ngaphandle kwesidingo seteyipu ixesha elide ngaphandle kokubangela intlungu okanye ukungonwabi. Esi sixhobo senziwe nge-serpentine mesh yamaphepha e-piezoelectric polymer athengiswayo abizwa ngokuba yi-polyvinylidene fluoride ngokusebenzisa indlela yokwenza elula, nengabizi kakhulu. Le polymer inepropati ekhethekileyo yokuvelisa itshaja yombane ukuphendula uxinzelelo loomatshini.
Ukuze ikhokela esi sixhobo, indlela yokudibanisa umfanekiso we-3D ibonisa intshukumo yesifuba ephuma ekuphefumleni nasekuhambeni kwentliziyo. Oku kunceda ekufumaneni indawo efanelekileyo yokuva ukungcangcazela kwesifuba ukuze kufakwe esi sixhobo. I-sensor ethambileyo ye-SCG idityaniswe nee-electrode zegolide ezisolulwayo kwisixhobo esinye ngokwaso senza isixhobo se-dual mode esinokulinganisa i-ECG kunye ne-SCG ngokulandelelana ngokusebenzisa i-electro- kunye ne-acoustic cardiovascular sensing (EMAC). I-ECG isetyenziswa rhoqo ukujonga intliziyo yomntu, kodwa xa idityaniswe nokurekhodwa kwesignali ye-SCG, ukuchaneka kwayo kuyaphucuka.. Ukusebenzisa le sensor ye-EMAC kunye nokwenza imilinganiselo ehambelanayo, amaxesha ahlukeneyo entliziyo anokukhutshwa ngempumelelo kuquka ixesha le-systolic. Kwaye, kwabonwa ukuba ixesha le-systolic linolwalamano olubi kakhulu noxinzelelo lwegazi , ngoko ke uxinzelelo lwegazi olubethayo nolubethayo lunokuqikelelwa kusetyenziswa esi sixhobo. Ulwalamano oluqinileyo lubonwe phakathi kwexesha le-systolic kunye noxinzelelo lwegazi lwe-systolic/diastolic. I-smartphone inika amandla esi sixhobo kude.
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)
UHa T. et al. 2019. I-E-tattoo ene-Laminated Ultrathin kunye ne-Stretchable E-tattoo yokulinganisa i-Electrocardiogram, i-Seismocardiogram, kunye ne-Cardiac Time Intervals. I-Advanced Science. https://doi.org/10.1002/advs.201900290
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