Naukowcy z Zhejiang University opracowali bezbateryjny i bezprzewodowy opatrunek do monitorowania rany. Wynalazek nadzoruje infekcję rany, a także dostarcza leki na żądanie za pomocą technologii NFC.
Nowoczesny opatrunek zintegrowany jest z modułem technologii radiowej NFC – bezprzewodowej komunikacji na bliską odległość, do 20 cm, bazującej na protokołach RFID. Dzięki temu opatrunek zbiera energię bezprzewodowo i transmituje dane. Elektroda, która zainstalowana została w opatrunku, używana jest do leczenia infekcji – na żądanie dostarcza odpowiednie substancje antybakteryjne do rany.
Zdolność wykrywania infekcji i podawania leków
Wynalazek, za pomocą zainstalowanych w nim sensorycznych czujników, mierzy temperaturę, pH rany i poziom kwasu moczowego, co pozwala na monitorowanie infekcji bakteryjnej toczącej się w łożysku rany. Z kolei tryb inteligentnego dostarczania leków na żądanie opiera się na działaniu elektrod, które uwalniają lek do rany pod wpływem siły elektrycznej.
Opatrunek nie wymaga baterii i jest bezprzewodowy. Tę funkcjonalność zawdzięcza technologii radiowej NFC, która zainstalowana jest w każdym smartfonie. Znajdujący się w pobliżu telefon zapewnia opatrunkowi bezprzewodowe zasilanie, które wykorzystywane jest do monitorowania i podawania leków.
Źródło: Zhejiang University
Elastyczny plaster
Nowoczesny opatrunek jest starannie zaprojektowanym dwuwarstwowym plastrem, który składa się z jednorazowej warstwy sensorycznej z czujnikiem i elastycznej warstwy obwodu, która zbiera sygnał NFC i jest wielokrotnego użytku.
Opatrunek został zaprojektowany w taki sposób, by dopasowywać się i przylegać do skóry. W jego strukturze naukowcy zastosowali przewody serpentynowe, które elektrycznie łączą się z warstwą czujnikową. Zapewnia to opatrunkowi rozciągliwość, a także możliwość zginania i skręcania, dzięki czemu materiał dostosowuje się do skóry i uzyskuje bezpośredni kontakt z raną.
Obiecujące narzędzie w leczeniu ran przewlekłych i zakażonych
Naukowcy podczas badań nad skutecznością swojego wynalazku przeprowadzili analizy in vitro oraz in situ na zwierzętach. Wykazano, że narzędzie może hamować wzrost bakterii i przyspieszać gojenie się rany.
Zespół naukowców z Zhejiang University podejrzewa, że w przyszłości inteligentny opatrunek może być stosowany do monitorowania i precyzyjnego leczenia ran przewlekłych, takich jak stopa cukrzycowa, owrzodzenia żylne kończyn, odleżyny i ciężkie oparzenia. Będzie również skutecznym rozwiązaniem dla pacjentów cierpiących na długotrwałe infekcje ran.
Źródło: Zhejiang University
Przeczytaj także: Operacje bariatryczne – wskazania, przebieg i rola w profilaktyce ran
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