Isikhangiso

I-E-Tattoo yokuqapha Umfutho Wegazi Ngokuqhubekayo

Ososayensi baklame idivayisi entsha ye-chest-laminated, ultrathin, engamaphesenti angu-100 yenzwa yenhliziyo elula (i-e-tattoo) ukuze igade ukusebenza kwenhliziyo. Idivayisi ingakala i-ECG, i-SCG (seismocardiogram) nezikhawu zesikhathi senhliziyo ngokunembile nangokuqhubekayo isikhathi eside ukuze iqaphe. igazi ingcindezi.

Izifo zenhliziyo ziyimbangela yokufa ehamba phambili emhlabeni wonke. Ukuqapha ukusebenza kwenhliziyo yethu kungasiza ngezinga elithile ekuvimbeleni izifo zenhliziyo. Isivivinyo se-ECG (electrocardiogram) sikala ukusebenza kukagesi kwenhliziyo yethu ngokukala ukushaya kwenhliziyo nesigqi ukuze sisitshele ukuthi inhliziyo yethu isebenza ngokujwayelekile yini. Okunye ukuhlola okubizwa nge-SCG (seismocardiography) kuyindlela esekwe kunzwa ye-accelerometer esetshenziswa ukurekhoda ukudlidliza kwemishini yenhliziyo ngokulinganisa ukudlidliza kwesifuba okubangelwa ukushaya kwenhliziyo. I-SCG ithola ukubaluleka emtholampilo njengesinyathelo esengeziwe kanye ne-ECG yokuqapha kanye nokuthola ukungahambi kahle kwenhliziyo ngokunemba okuthuthukisiwe nokwethembeka.

Amadivayisi agqokekayo afana nezilandeleli zokufaneleka nezempilo manje ayindlela ethembisayo nedumile yokuqapha impilo yethu. Ukuqapha ukusebenza kwenhliziyo, amathuluzi athambile ambalwa atholakalayo akala i-ECG. Kodwa-ke, izinzwa ze-SCG ezitholakalayo namuhla zisekelwe kuma-accelerometer aqinile noma ulwelwesi olunganwebeki oluwenza abe mkhulu, angasebenzi futhi angakhululeki ukuwagqoka.

Ocwaningweni olusha olushicilelwe ngoMeyi 21 ngo Isayensi Ethuthukile, abacwaningi bachaza umshini omusha ongenziwa i-laminated esifubeni somuntu (okungakho ubizwa ngokuthi i- e-tattoo) nokuqapha ukusebenza kwenhliziyo ngokulinganisa i-ECG, i-SCG nezikhawu zesikhathi senhliziyo. Le divayisi eyingqayizivele i-ultrathin, ilula, iyanwebeka futhi ingabekwa phezu kwenhliziyo yomuntu ngaphandle kwesidingo setheyiphu isikhathi eside ngaphandle kokubangela ubuhlungu noma ukungakhululeki. Idivayisi yenziwe ngemeshi eyinyoka yamashidi atholakalayo ukuze ahwebe epolymer ye-piezoelectric ebizwa nge-polyvinylidene fluoride ngokusebenzisa indlela yokukhiqiza elula, engabizi. Le polymer inendawo eyingqayizivele yokukhiqiza ukushaja kagesi ukuphendula ingcindezi yemishini.

Ukuze uqondise le divayisi, indlela ye-3D yokuhlobana kwesithombe imephu ukunyakaza kwesifuba okususelwa ekuphefumuleni nasekunyakazeni kwenhliziyo. Lokhu kusiza ukuthola indawo ekahle yenzwa yokudlidliza kwesifuba ukukhweza idivayisi. Inzwa ethambile ye-SCG ihlanganiswe nama-electrode egolide anwebekayo kudivayisi eyodwa ngokwayo eyenza idivayisi yemodi ekabili engalinganisa i-ECG ne-SCG ngokusebenzisa i-electro- and acoustic cardiovascular sensing (EMAC). I-ECG ijwayele ukusetshenziselwa ukuqapha inhliziyo yomuntu, kodwa uma ihlanganiswa nokuqoshwa kwesignali ye-SCG, ukunemba kwayo kuyathuthukiswa. Futhi, kwabonakala ukuthi isikhawu sesikhathi se-systolic sinokuhlobana okunegethivu okuqinile umfutho wegazi, ngaleyo ndlela umfutho wegazi we-beat-to-beat ungase ulinganiswe kusetshenziswa le divayisi. Ukuhlobana okuqinile kwabonwa phakathi kwesikhawu sesikhathi se-systolic kanye nomfutho wegazi we-systolic/diastolic. I-smartphone inika amandla ukude le divayisi.

Idivayisi esanda kufakwa esifubeni echazwe ocwaningweni lwamanje ihlinzeka ngendlela elula yokuqapha umfutho wegazi ngokuqhubekayo futhi ngaphandle kokuhlasela. Le divayisi iyinzwa ye-ultrathin, i-ultralight, ithambile, i-100 iphesenti enwebekayo ye-mechano-acoustic enokuzwela okuphezulu futhi engenziwa kalula. Izingubo ezinjalo ezigqokwayo ezingagqokwa ukuqapha ukusebenza kwenhliziyo ngaphandle kokudinga ukuvakashela udokotela zingase zithembise ukuvimbela izifo zenhliziyo.

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{Ungafunda iphepha lokuqala locwaningo ngokuchofoza isixhumanisi se-DOI esinikezwe ngezansi ohlwini lwemithombo ekhonjiwe}

Umthombo (s)

Ha T. et al. 2019. I-Chest-Laminated Ultrathin kanye ne-E-Tattoo Enwebekayo Yokulinganisa I-Electrocardiogram, Seismocardiogram, kanye Nezikhawu Zesikhathi Senhliziyo. Isayensi Ethuthukisiwe. https://doi.org/10.1002/advs.201900290

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