Cov lus teb luv luv ntawm kev lag luam yog:tib neeg lub cev feem ntau tsis tsis lees txais titanium vim tias titanium yog corrosion heev -resistant thiab tsim ib tug ruaj khov, lom oxide txheej, yog li nws nyiam coj "inert" ntawm cov hlau-cov ntaub so ntswg interface. Hauv cov tshuaj, kev tsis lees paub feem ntau yog tsav los ntawmkab mob, teeb meem txhua yam, cov yam ntxwv saum npoo, los yog hnav cov khib nyiab, es tsis yog los ntawm titanium "tau lees paub tias yog txawv teb chaws" zoo ib yam li ntau tus neeg xav txog.
Hauv qab no yog cov ncauj lus kom ntxaws, kev lag luam- qauv piav qhia.
1) Titanium passivates: qhov saum npoo ua tus yuam sij
Titanium nto sai tsim ib txheej nyias, ruaj khov oxide txheej (feem ntau piav raws li titanium dioxide, ntxiv rau lwm yam ultrathin variations nyob ntawm ib puag ncig). Cov txheej txheem oxide no tseem ceeb vim nws:
tiv thaiv corrosion sai(yog li tsawg reactive hlau ions raug tso tawm),
tuav aruaj khov tshuaj interfacenrog cov kua dej hauv lub cev,
thiab txo qhov yuav muaj zog inflammatory tshwm sim los ntawm corrosion khoom.
Hauv lwm lo lus, cov hlau nws tus kheej tseem ceeb -tab sis hauv kev sib cuag ntawm lub cev, qhovzaj duab xis ntoyog yam uas txiav txim siab txog kev coj tus cwj pwm lom neeg.
2) Tsawg ion tso tawm=txo qis thiab tiv thaiv kab mob
Thaum cov hlau corrode, lawv tuaj yeem tso tawm ions thiab hnav cov khoom. Cov ions / cov khoom no tuaj yeem ua rau khaus lossis ua rau cov kab mob inflammatory. Titanium passivation txhais tau tias:
corrosion feem ntau yog tsawg,
ion tso tawm feem ntau txwv,
thiab cov ntaub so ntswg nyob ib puag ncig yog tsawg dua rau cov kab mob uas muaj feem cuam tshuam.
Qhov no yog ib qho laj thawj tseem ceeb ntawm titanium yog dav siv hauvkev cog hniav, orthopedic implants, thiab cov pob txha fixation.
3) Titanium yog suav tias yog "biocompatible" es tsis yog "invisible"
Hauv kev lag luam thiab kev tshawb fawb soj ntsuam, "titanium tsis raug tso tseg" tsis txhais hais tias nws yeej tsis cuam tshuam nrog lub cev. Hloov chaw:
titanium zoo li yuavbiocompatible-lub cev muaj peev xwm zam tau nws,
thiab lub cev tiv thaiv kab mob feem ntau tsis ua kom muaj zog, tsis kam lees teb raws li cov xwm txheej ib txwm muaj.
Lub cev tseem tuaj yeem tsim ib qhobiological tebxws li ib txheej kho thiab cov ntaub so ntswg remodeling nyob ib ncig ntawm lub implant. Qhov ntawd yog ib txwm muaj rau kev cog qoob loo, thiab nws txawv ntawm "kev tsis lees paub" zoo li koj yuav pom nrog kev hloov pauv hauv nruab nrog cev.
4) Nto qauv pab cov hlwb txuas thiab sib koom ua ke
Niaj hnub nimno implants feem ntau tsis yog "titanium hlau" xwb; lawv muaj engineered nto. Kev lag luam siv ntau lub tswv yim saum npoo los txhawb kev sib koom ua ke, xws li:
ntxeem tau titaniumlos yog coatings uas tso cai rau cov pob txha ingrowth,
roughened los yog acid -etched ntotxhawm rau txhim kho cell txuas,
cov txheej txheem tshwj xeeb hauv qee kis (tseem tsim los ua biocompatible).
Thaum qhov chaw txhawb nqa cov ntaub so ntswg ruaj khov, kev cog qoob loo feem ntau yuav dhau los ua neeg kho tshuab thiab lom neeg "tau txais" ntev - lub sijhawm.
5) Feem ntau implants tsis ua haujlwm zoo li kev siv tshuab lossis kab mob, tsis yog "titanium allergy"
Thaum tib neeg hais tias "Kuv lub cev tsis lees txais kuv qhov kev cog qoob loo titanium," feem ntau yog ib qho ntawm cov no:
kab mob(kev tsim biofilm yog ib qho teeb meem loj hauv kev cog qoob loo),
implant micromotionlos yog tsis haum (kev txav tuaj yeem tiv thaiv kev sib koom ua ke ruaj khov),
hnav cov khib nyiablos ntawm kev cog qoob loo los yog kev sib txuas ntawm kev sib txuas (cov khoom tuaj yeem ua rau mob rau lub sijhawm ntev),
sterilization tsis txauslos yog thaum ntxov post{0}} phais mob.
Qhov tseeb tiv thaiv tsis kam rau titanium yog suav tias yogtsis tshua muaj, thiab ntau yam "tsis lees paub-zoo li" cov tsos mob tsis yog qhov tsis lees paub classic.
6) Kev ua xua thiab rhiab heev: tsis tshua muaj, tab sis ua tau
Qee cov neeg mob qhia rhiab heev rau cov hlau. Titanium allergy feem ntau suav hais tias yogtsis tshua muaj, tab sis rhiab heev tuaj yeem tshwm sim -tshwj xeeb tshaj yog thaum:
muaj lwm yam hlau nyob rau hauv lub cuab yeej (xws li, alloying ntsiab, los yog cov ntaub ntawv siv rau coatings),
muaj qhov paug tawm ntawm qhov chaw,
los yog cov cuab yeej tsim muaj xws li cov khoom sib cuag nrog cov ntaub so ntswg sib txawv.
Yog li kev kho mob, titanium feem ntau muaj kev nyab xeeb rau cov neeg feem coob, tab sis "tsis muaj kev cuam tshuam" tsis yog rau txhua tus neeg.
7) Kev lag luam tswv yim takeaway: titanium raug zam vim nws ruaj khov
Yog li vim li cas lub cev tsis "tsis lees paub" titanium?
Titanium forms aruaj khov oxide zaj duab xis(passivation),
nws qhiaTsawg corrosion thiab qis ion tso tawmnyob rau hauv ntau yam physiological mob,
nto tuaj yeem tsim kho kom txhawb nqakev sib xyaw ntawm cov ntaub so ntswg,
thiab feem ntau cov teeb meem cuam tshuam nrogkab mob, mechanics, lossis hnav cov khib nyiab, tsis nruj tiv thaiv tsis kam rau titanium ib leeg.
Hauv qab kab
Titanium feem ntau tsis raug tso tseg vim nws yog passivating thiab biocompatible, txhais tau tias nws tiv thaiv corrosion thiab tswj kev ruaj ntseg nrog cov ntaub so ntswg ntawm lub cev. Thaum cov tshuaj tiv thaiv tuaj yeem tshwm sim (tsis tshua muaj kev ua xua, kis kab mob, teeb meem siv tshuab, hnav cov khib nyiab), tag nrho cov ntaub ntawv hauv kev kho mob cog qoob loo muaj zog - yog li titanium yog ib qho ntawm cov khoom siv cog qoob loo uas ntseeg siab tshaj plaws hauv kev lag luam.
