Ukuphrinta kwe-3D izindwangu eziphilayo, kufaka phakathi i-cornea, imithambo yegazi nesikhumba, akuwona umsebenzi olula. Kepha okungenani kunezindwangu eziphilayo. Ithambo, kunalokho, liyingxube yezimpawu eziphilayo neze-inorganic kwi-matrix yamaminerali ehlelwe kakhulu. Ngamanye amagama, ithambo lokuphrinta le-3D ngumsebenzi oyinselele.
Kungakho onjiniyela be-bio-onjiniyela bazama izinto eziningi ezahlukahlukene zamathambo abo okwenziwa, kufaka phakathi ama-hyrrogels, ama-thermoplastics kanye nama-biocheracheramics. Muva nje, iqembu leNyuvesi yaseNew South Wales (Australia) lakhiwa "inki ye-Ceramic ink", elingasetshenziswa ngesikhathi sokuphrinta kwe-3D ekushiseni kwamakamelo futhi ngaphandle kokusebenzisa isimo ngokuqhathaniswa kakhulu . Ngokusho kwabaphenyi, ubuchwepheshe obusha ekugcineni bungasetshenziswa ukuphrinta amathambo ngqo emzimbeni wesiguli.
Imininingwane mayelana nale ntuthuko yashicilelwa kumagazini we-Advanced Ountal Magazine.
Ukuphrinta kwe-3D kwezicubu zamathambo kunezicelo eziningi zezokwelapha kanye nocwaningo - ukumodela kwezifo zamathambo, ukuhlolwa kwezidakamizwa, ukutadisha kwethambo eliyingqayizivele le-microenvelontom futhi, mhlawumbe, into ebaluleke kakhulu ukubuyisa amathambo alimele uma kulimala, umdlavuza noma ezinye izifo.
Isilinganiso sanamuhla segolide sokulungisa ithambo ukusetshenziswa kwe-transplant yethambo kusuka kwenye ingxenye yomzimba wesiguli. Ngeshwa, ukusetshenziswa kwalezi zinto ezihlanganisiwe kuhlotshaniswa nengozi enkulu yokutheleleka futhi akunakusetshenziswa uma inani elidingekayo lezinto zamathambo likhulu kakhulu.
![Phrinta ithambo elisha emzimbeni womuntu 16544_1](/userfiles/21/16544_1.webp)
Emzameni wokwakha impahla yamathambo edingekayo yokwenziwa, ososayensi baseyunivesithi benze inki, engaphrintwa endaweni yasemanzini, njengomzimba. Ngemuva kweminyaka emibili yokusebenza, badala impahla ehambisanayo esekelwe kwi-calcium phosphate, eyakha i-paste emazingeni okushisa asekamelweni. Lapho ebekwe kubhavu we-gelatin noma esinye isixazululo, ukusabela kwamakhemikhali kwenzeka, futhi ukunamathisela kuqinisa i-matrix ye-porous nanocrystalline, okufana nesakhiwo sezicubu zamathambo okuqala.
Ngokuphrinta, basebenzisa i-3D enjini ye-3D ye-3D ye-3D ye-HR 3D nge-Quapza ekhethekile. Izinaliti ezincane ezisukela ku-0,2 kuya ku-0.8 mm zikhishwe ngaphakathi ku-gelatin bath nge lokushisa le-37ºC. Ubuchwepheshe obubizwa ngeCoobics (i-Ceramic Omnidirectional Biproprinting in Cell-Susmions) ingashintshwa kwabanye abaphrinti be-3D, abanjengabaphrinta abaphathekayo nababhukwayo abangathathwa kuwe egumbini lokuhlinzwa.
Emsebenzini wakhe wakamuva, ososayensi baphrinte izinhlaka ezincane zamathambo ku-gelatin bath equkethe amaseli amathambo abantu nezinye izinhlobo zamaseli abantu. Uyinki oqinile owethulwe amaseli abukhoma esakhiweni, futhi lawa maseli afika ngemuva kokuphrinta futhi aqala ukwanda. Ukusebenza ngokusinda kwakungu-95%.
Njengamanje, iqembu lihlakulela okugeza lokuphrinta amasampula amakhulu futhi laqala ukuqhuba izivivinyo ezilwaneni ezincane ukubheka ukuthi lobu buchwepheshe bungabuyisela yini inxeba elikhulu kalula njengokufakelwa okunempilo.