Abantu abaninzi abayazi le nto, kodwa abanye abantu abavumelani nayoiintsimbi.Ngokolwazi lwangasemva olupapashwe kwinqaku elitsha, ishumi leepesenti labemi baseJamani abadibani ne-nickel.
Kodwa ukufakelwa kwezonyango kusebenzisa i-nickel.Ingxubevange ye-nickel-titanium isanda kusetyenziswa njengezixhobo zokufakelwa kwe-cardiovascular invasive procedures, kwaye emva kokufakelwa, ezi ngxube zikhupha ixabiso elincinci le-nickel ngenxa yokubola.Iyingozi?
Iqela labaphandi abavela kuJena, uProf. Rettenmayr kunye noGqr Andreas Undis, baxela ukuba iingcingo ezenziwe kwi-nickel-titanium alloy zikhupha i-nickel encinci, nangona ixesha elide.Ixesha lovavanyo lokukhutshwa kwesinyithi liyientsuku ezimbalwa kuphela, njengoko kufunwa ngurhulumente ukuze kuvunyelwe ukufakelwa kwezonyango, kodwa iqela lophando likaJena labona ukukhutshwa kwe-nickel kwiinyanga ezisibhozo.
Injongo yesifundo yintambo encinci eyenziwe nge-superelastic nickel-titanium alloy, esetyenziswayo, umzekelo, ngendlela ye-occluder (ezi zifakelo zonyango ezisetyenziselwa ukulungisa i-heart septal defect).I-occluder idla ngokuba neengcingo ezimbini ezincinciumnatha“iiambrela” ezilingana ne-euro.Ukufakelwa kwe-superelastic kunokutsalwa ngoomatshini kucingo olubhityileyo olunokuthi emva koko lufakwe kwicatheter yentliziyo.“Ngale ndlela, i-occluder inokubekwa ngenkqubo ehlasela kancinci,” utshilo u-Undisch.Ngokufanelekileyo, ukufakelwa kuya kuhlala kwisigulane iminyaka okanye amashumi eminyaka.
I-Occluder eyenziwe nge-nickel-titanium alloy.Ezi zifakelo zonyango zisetyenziselwa ukulungisa i-septum yentliziyo eneziphene.Ikhredithi: Ifoto: Jan-Peter Kasper/BSS.
Undis kunye nomfundi ogqirha uKatarina Freiberg wayefuna ukufumanisa ukuba kwenzeke ntoni kwi-nickel-titanium wire ngeli xesha.Babeka iisampulu zocingo ngeendlela ezahlukeneyo zonyango kunye nonyango lwe-thermal kumanzi e-ultrapur.Baye bavavanya ukukhutshwa kwe-nickel ngokusekwe kumaxesha amisiweyo exesha.
U-Undish uthi: “Oku akuyondlwan’ iyanetha, kuba ukuxinana kwentsimbi ekhutshwayo kudla ngokuba kumda wokubonwa.”, iphumelele ekuphuhliseni inkqubo yokuvavanya eyomeleleyo yokulinganisa inkqubo yokukhululwa kwe-nickel.
Ngokuqhelekileyo, kwiintsuku zokuqala kunye neeveki, kuxhomekeke kunyango lwangaphambili lwezinto eziphathekayo, inani elibalulekileyo le-nickel lingakhutshwa, "u-Undisch ushwankathela iziphumo.Ngokutsho kwezixhobo zenzululwazi, oku kungenxa yomthwalo womatshini kwi-implant ngexesha lokusebenza.“I-deformation itshabalalisa umaleko obhityileyo weoksidi ogqume loo nto.Isiphumo kukunyuka kokuqalanickelukuchacha.”nickel sifunxa ngokutya yonke imihla isixa.
KwiSayensi 2.0, izazinzulu ziintatheli, ngaphandle kokukhetha kwezopolitiko okanye ulawulo lokuhlela.Asinakuyenza le nto sisodwa, ngoko ke nceda wenze eyakho indima.
Singenzi nzuzo, iCandelo 501(c)(3) lombutho weendaba zenzululwazi ofundisa abantu abangaphezu kwezigidi ezingama-300.
Unokunceda ukwenza umnikelo ongahlawulelwa rhafu namhlanje kwaye umnikelo wakho uya kuhamba nge-100% kwiinkqubo zethu, akukho mvuzo okanye ofisi.