Vim li cas titanium alloys zoo tagnrho rau cog?
Hauv kev kho mob, kev xaiv cov khoom cog yog qhov tseem ceeb rau cov neeg mob kev noj qab haus huv thiab lub neej zoo, thiab yeej ib txwm yog qhov tseem ceeb ntawm kev saib xyuas rau cov kws tshawb fawb thiab kws kho mob. Los ntawm lub plawv stents mus rau cov pob qij txha, los ntawm kev cog hniav mus rau cranial kho daim hlau, ib qho khoom sawv tawm vim nws qhov kev ua tau zoo, dhau los ua qhov kev xaiv zoo tshaj plaws rau ntau qhov kev cog qoob loo -titanium alloy. Nws muaj txiaj ntsig dab tsi uas tau txais kev pom zoo thoob plaws hauv zej zog kev kho mob?
Biocompatibility: Lub pob zeb ntawm "kev sib haum xeeb ntawm kev sib haum xeeb" nrog tib neeg lub cev
Titanium alloys muaj qhov tshwj xeeb biocompatibility. Thaum cog rau hauv tib neeg lub cev, titanium dioxide oxide zaj duab xis tuab sai sai rau ntawm nws qhov chaw. Cov yeeb yaj kiab no ua haujlwm zoo li cov ntaub thaiv npog ruaj khov, tiv thaiv kev tso tawm ntawm cov hlau ions thiab tiv thaiv kev tawm tsam ntawm lub cev. Tsis zoo li cov ntaub ntawv ib txwm muaj xws li cov hlau tsis muaj steel thiab cobalt-chromium alloys, uas maj mam tso cov nickel thiab chromium ions, uas ua rau muaj kev tsis haum lossis tshuaj lom, thiab thaum kawg ua rau cov ntaub so ntswg, titanium alloys, nrog cov oxide zaj duab xis no, tuaj yeem sib xyaw nrog cov ntaub so ntswg, ua tiav qhov tseeb "biofusion." Piv txwv li, hauv kev cog hniav, tom qab titanium implants muab tso rau hauv cov pob txha alveolar, oxide zaj duab xis adsorbs calcium thiab phosphate, txhawb hydroxyapatite deposition. Qhov no tso cai rau cov pob txha pob txha loj hlob ncaj qha rau ntawm qhov chaw titanium, ua kom ruaj khov "osseointegration" thiab ua kom lub sijhawm ntev -kev ruaj ntseg ntawm kev cog qoob loo.
Mechanical Properties: Ib qho zoo meej sib npaug ntawm lub zog thiab elasticity
Cov khoom siv cog qoob loo zoo tshaj plaws xav tau lub zog txaus los tiv thaiv lub zog tsim los ntawm kev ua haujlwm niaj hnub, thaum nws elasticity yuav tsum zoo ib yam li cov pob txha tiag tiag kom txo tau qhov "kev nyuaj siab tiv thaiv" cov nyhuv. Titanium alloys zoo kawg nkaus ua tau raws li cov cai no. Nws lub zog yog ze rau ntawm cov hlau tsis muaj steel, tab sis nws qhov ceev tsuas yog ib nrab ntawm cov hlau tsis muaj steel. Lub zog siab thiab cov yam ntxwv tsis tshua muaj siab ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev tsim cov pob qij txha lossis pob txha fixation. Siv cov pob qij txha pob qij txha ua piv txwv, Ti-6Al-4V thiab Ti-6Al-7Nb yog cov khoom siv feem ntau; lawv qhov qis elastic modulus txo cov pob txha tsis nyob ib ncig ntawm qhov cog vim tias qhov kev cog hniav yog qhov nyuaj tshaj li cov pob txha. Hauv kev txhim kho pob txha, cov pob txha daim hlau, cov ntsia hlau, thiab cov ntsia hlau intramedullary ua los ntawm cov ntshiab titanium thiab Ti-6Al-4V muaj cov khoom siv kho tshuab uas haum rau cov pob txha, tsis txhob muaj kev pheej hmoo ntawm cov pob txha hauv nruab nrab thiab pab cov neeg mob rov zoo dua.
Corrosion Resistance: Cov neeg saib xyuas tawm tsam hnyav hauv Vivo Ib puag ncig
Tib neeg lub cev ib puag ncig yog hnyav heev ntawm cov hlau. Qhov kub tsis tu ncua ntawm 37℃, chloride - cov kua dej ntau hauv lub cev, thiab kev sib txhuam tsis tu ncua tuaj yeem ua rau muaj kev xeb rau cov khoom cog. Txawm li cas los xij, titanium alloys muaj kev ruaj ntseg zoo kawg li. Nyob rau hauv simulated lub cev kua, tus nqi txhua xyoo corrosion ntawm titanium alloys tsawg tshaj li ib tug -txheej txoj kab uas hla ntawm ib tug tib neeg cov plaub hau. Piv txwv li, txhua xyoo corrosion tus nqi ntawm kev lag luam ntshiab titanium hauv 20% hydrochloric acid (60 degree) yog 25.6 hli, thaum lub Ti-0.2Pd alloy tsuas yog 0.255 hli, sawv cev ze li ntawm 100-fold nce hauv corrosion kuj. Qhov kev tiv thaiv corrosion zoo tshaj no ua kom ntseeg tau tias titanium alloys tuaj yeem siv rau hauv lub cev rau lub sijhawm ntev yam tsis muaj degradation lossis deformation, muab kev tiv thaiv ntev rau tus neeg mob kev noj qab haus huv.
Kev Tsim Nyog: Ib qho kev xav zoo los txo tus neeg mob hnyav
Lub teeb yuag ntawm titanium alloys ho txo lub nra ntawm cov neeg mob tom qab cog. Piv txwv li, nyob rau hauv cranioplasty, qhov tsawg ceev ntawm titanium alloy cranioplasty daim hlau txhais tau hais tias implantation tsis tso siab heev rau tus neeg mob lub taub hau, pab lawv rov qab lub cev ua hauj lwm sai dua. Hauv kev kho hniav, titanium hniav nyiaj hniav kub muab kev nplij siab ntau dua piv rau cov hniav hlau ib txwm muaj, muab lub nra hnyav rau ntawm qhov ncauj thiab txhim kho cov neeg mob lub neej zoo.
Yav Tom Ntej Outlook: Nruam Innovation, nthuav dav daim ntawv thov ciam teb
Nrog kev txhim kho txuas ntxiv ntawm kev kho mob thev naus laus zis, daim ntawv thov kev cia siab ntawm titanium alloys yuav dhau los ua ntau dua. Cov kws tshawb fawb tau ntxiv dag zog rau bioactivity thiab corrosion kuj ntawm titanium alloys los ntawm kev hloov kho saum npoo thiab txheej thev naus laus zis. Nyob rau hauv lub neej yav tom ntej, titanium alloys yuav tsum tau ua lub luag haujlwm tseem ceeb hauv ntau thaj chaw, nqa cov txiaj ntsig ntau dua rau cov neeg mob.
Titanium alloys, nrog rau lawv zoo heev biocompatibility, superior mechanical zog, zoo heev corrosion kuj, thiab hnav tsim, tau dhau los ua cov ntaub ntawv zoo tagnrho rau tib neeg cog. Zoo li "tus neeg saib xyuas tsis pom" hauv tib neeg lub cev, lawv ntsiag to tiv thaiv kev noj qab haus huv ntawm cov neeg mob. Nws ntseeg tau tias yav tom ntej, titanium alloys tseem yuav ci ntsa iab hauv kev kho mob, ua kom muaj txiaj ntsig zoo rau tib neeg kev noj qab haus huv.
