Puas yog titanium alloys yog cov khoom siv zoo tshaj plaws rau lub plawv stents?

Nyob rau hauv lub sijhawm ntawm cov tshuaj tsis tshua muaj kev cuam tshuam, lub plawv stents yog cov cuab yeej tseem ceeb rau kev tshem tawm cov hlab ntsha thiab cawm txoj sia. Cov mesh no-zoo li cov khoom siv tuaj yeem nthuav dav cov hlab ntsha thiab kho cov ntshav myocardial. Lawv cov khoom txhawb nqa tseem ceeb yog titanium alloy, hu ua "universal hlau" hauv biomedicine. Los ntawm cov ntaub ntawv aerospace mus rau tib neeg kev cog qoob loo,titanium alloy tau tsav txoj kev loj hlob ntawm lub plawv stents nrog nws cov khoom tshwj xeeb, coj txoj sia -txuag kev cia siab rau cov neeg mob plawv.

Kev sib koom ua ke ntawm titanium alloy thiab cardiac stents pib los ntawm kev ua haujlwm hla kev ua haujlwm. Hauv xyoo 1940, titanium alloy tau pib siv hauv kev tsim dav hlau fighter. Cov kws tshawb fawb tau tshawb pom nws qhov kev sib raug zoo nrog cov pob txha tsiaj, tso lub hauv paus rau nws nkag mus rau hauv kev kho mob. Los ntawm xyoo 1950, titanium alloy tau raug siv hauv tshuaj. Nrog rau kev nce qib ntawm kev siv tshuab plawv, nws tau maj mam dhau los ua cov khoom tseem ceeb ntawm lub plawv stents vim nws cov txiaj ntsig tsis tuaj yeem hloov tau, hloov cov hlau tsis muaj steel stents nrog siab rigidity thiab tsis zoo sib xws, nrog rau cov cobalt-chromium alloy stents tsis zoo, ua rau muaj kev cuam tshuam loj hauv stent technology.

Titanium alloy tau dhau los ua "cov khoom siv kub" rau lub plawv stents feem ntau yog vim muaj peb yam zoo uas ua rau muaj kev xav tau ntawm tib neeg cov hlab ntsha.

Advantage 1: Zoo heev Biocompatibility rau "Bio-Kev koom ua ke"

Ua ntej, nws qhia tau hais tias zoo heev biocompatibility. Nyob rau hauv tib neeg lub cev 37℃lub cev kua ib puag ncig, ib tug tuab titanium dioxide tiv thaiv zaj duab xis nyob rau saum npoo ntawm titanium alloy. Nws tuaj yeem tiv thaiv kev tso tawm ntawm cov hlau ions, zam kev tiv thaiv kev tiv thaiv kab mob, thiab txhawb kev tso tawm ntawm hydroxyapatite kom ua tiav bio- kev koom ua ke nrog cov ntaub so ntswg. Piv txwv li, stainless hlau, cobalt-chromium alloy, thiab lwm yam ntaub ntawv maj mam tso nickel, chromium, thiab lwm yam ions. Nws zoo li ua rau muaj kev tsis haum lossis tshuaj lom thiab tsis ua tiav qhov zoo tagnrho biocompatibility.

Thib ob, titanium alloy muaj zog, tawv, thiab lub teeb yuag, ua kom haum rau qhov chaw muaj zog ntawm cov hlab ntsha. Stents yuav tsum tau tiv taus ntev - lub sij hawm cov ntshav ntws cuam tshuam thiab vascular contraction - so kom txaus, yuav tsum muaj zog thiab elasticity. Titanium alloy muaj ib nrab ntawm qhov ntom ntawm cov hlau, txo lub nra ntawm cov hlab ntsha, thaum nws lub zog yog piv rau cov hlau. Lub elastic modulus ntawm tshiab titanium alloys yog hais txog 60 GPa, ze rau ntawm tib neeg cov hlab ntsha, tso cai rau nws ua raws li micro- deformations ntawm cov hlab ntsha yam tsis muaj deformation mus tas li. Nws lub neej qaug zog nce ntau dua 1 billion zaug, txo qhov kev pheej hmoo ntawm pob txha. Qhov kev sib xyaw ua ke ntawm rigidity thiab yooj yooj yim ua rau stents kom haum rau cov hlab ntsha complex thiab tortuous thiab txo kev puas tsuaj rau cov phab ntsa vascular.

Advantage 2: Rigidity thiab Flexibility los hloov mus rau Dynamic Vascular Ib puag ncig

Titanium alloy muaj kev tiv thaiv corrosion zoo heev thiab tuaj yeem nyob ruaj khov rau lub sijhawm ntev hauv tib neeg lub cev ib puag ncig. Tib neeg lub cev kua muaj ntau cov chloride ions. Nws muaj kev sib txhuam tsis tu ncua, uas yog corrosive heev rau cov hlau. Txawm li cas los xij, txhua xyoo corrosion tus nqi ntawm titanium alloy nyob rau hauv simulated lub cev kua yog tsawg tshaj li ib tug - txhiab ntawm txoj kab uas hla ntawm ib tug tib neeg cov plaub hau. Lub caij no, nws lub zog qis thiab hydrophilicity txo platelet adhesion, txo qhov kev pheej hmoo ntawm thrombosis, thiab ua kom ntev - lub sij hawm kev nyab xeeb ntawm stent.

Advantage 3: Corrosion Resistance thiab Stability rau Kev Nyab Xeeb Lub Sij Hawm Ntev

Nrog rau kev nce qib ntawm cov ntaub ntawv thiab kev kho mob thev naus laus zis, titanium alloy cardiac stents tau hloov kho tas li kom ua tau zoo dua, muaj kev nyab xeeb, thiab cov neeg siv khoom zoo -. Thaum ntxov liab qab- hlau titanium alloy stents tuaj yeem thaiv cov hlab ntsha, tab sis tus nqi rov qab ua haujlwm rov qab mus txog 20% ​​-30%. Tshuaj-eluting stents tau tsim. Nws tuaj yeem thauj cov tshuaj xws li rapamycin ntawm laser-drilled microholes kom ua tiav qhov tso tawm hauv zos, txo tus nqi restenosis qis dua 5% thiab coj mus rau lub sijhawm tshiab hauv kev kho plawv stent.

Niaj hnub no, 3D tshuab luam ntawv muaj tus kheej customization ntawm titanium alloy cardiac stents. Raws li tus neeg mob cov duab CT, cov kws kho mob tuaj yeem ua cov stents uas zoo sib xws rau cov qauv vascular siv tshuab electron beam melting, zoo dua hais txog cov kab mob bifurcation thiab txhim kho cov txiaj ntsig kho mob.

Biodegradable titanium alloy stents tau ua qhov tseem ceeb heev. Kev siv cov hlau-raws li lossis magnesium-raws li titanium alloy cov ntaub ntawv, cov stents tuaj yeem maj mam degrade mus rau hauv cov phosphates tsis muaj teeb meem li ntawm 2 xyoos tom qab cog, zam kev mob ntev los ntawm kev tuav ntev ntev ntawm cov hlau thiab paub tias "tsis muaj qhov seem tom qab kho".

Txawm li cas los xij, titanium alloy cardiac stents tseem muaj qee qhov tsis zoo: cov khoom siv siab ua rau cov stents kim, ua rau cov neeg mob lub nra hnyav; Qee cov stents tsim cov khoom qub thaum kuaj MRI, cuam tshuam rau kev kuaj mob; thiab postoperative restenosis tsis tau tshem tawm tag nrho. Txawm li cas los xij, cov kev txwv no tsis tau cuam tshuam qhov tseem ceeb ntawm titanium alloy. Hauv kev xyaum kho mob, cov kws kho mob xaiv ntau yam raws li cov neeg mob cov mob, lub cev nqaij daim tawv, thiab nyiaj txiag.

Ruihang Group tsuas yog tsim cov khoom siv titanium thiab titanium alloy nrog kev ua tiav kev lag luam saw. Yog tias koj xav tau kev yuav khoom, thov hu rau peb ntawm Email:Sam.Rui@bjrh-titanium.com