Piv txwv ntawm kev kho mob titanium rods siv nyob rau hauv tib neeg cov hlab plawv muaj xws li dag lub plawv li qub, lim ntshav, pacemakers thiab dag lub plawv twj tso kua mis.
Nws lub ntsiab zoo yog:
① Lub zog siab, kev ruaj ntseg tshuaj zoo, thiab biocompatibility zoo heev;
② Titanium yog tsis-sib nqus thiab tsis tshua muaj cov khoom cuav hauv magnetic resonance spectra (MRI);
③ Lub elasticity thiab cov duab rov ua haujlwm ntawm NiTi nco alloy yog qhov tsim nyog rau kev siv kho mob. NiTi alloy yog nyob rau hauv martensitic xeev ntawm qhov kub thiab txias (ze zero degrees) thiab tuaj yeem hloov tau yooj yim rau hauv cov duab uas yooj yim rau kev nkag mus rau tib neeg lub cev. Thaum qhov kub nce mus rau lub cev kub Ib qho kev hloov pauv rov qab yuav tshwm sim, yog li rov qab mus rau qhov qub txheej txheem, thiab tsim kom muaj lub zog loj dua los ua lub luag haujlwm orthopedic thiab txhawb nqa.
Nyob rau hauv xyoo tas los no, daim ntawv thov ntawm NiTi cov duab nco alloys hauv vascular stents tau nyiam ntau yam. Txawm li cas los xij, NiTi alloys tuaj yeem yaj Ni ions nyob rau hauv lub cev nqaij daim tawv, yog li inducing toxicity thiab inflammatory tshua. Txog rau qhov kawg no, cov kws tshawb fawb tau ua ntau qhov kev tshawb fawb txog kev hloov kho saum npoo ntawm cov hlau no. Cov txheej txheem tseem ceeb muaj xws li txheej txheej inert, nto oxidation, ua kom nto thiab nto grafting ntawm macromolecules. Txawm hais tias cov ntsiab lus pib sib txawv, lawv tuaj yeem cuam tshuam zoo rau kev tawg ntawm Ni ions thiab txhim kho corrosion kuj thiab biocompatibility ntawm NiTi alloys.
