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.
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.