Daim Ntawv Thov ntawm Laser Micromachining Technology hauv Khoom Siv Khoom Siv Hluav Taws Xob
Daim Ntawv Thov Peb
Vascular stent qauv ua.
Vascular stent implantation yog txoj hauv kev kho mob vascular xws li arteriosclerosis. Kev nthuav dav ntawm cov hlab ntsha los yog kab noj hniav kom ntseeg tau tias cov ntshav tuaj yeem ntws mus rau hauv txoj hlab ntshav ntawm qhov chaw nyob thaum muaj mob stenosis lossis occlusion. Lub stent feem ntau yog biocompatible. Tubular mesh qauv prosthesis machined los ntawm cov hlau tsis muaj hlau lossis cov organic polymer. Nws yog xim hlau rau cov hlab ntsha txhaws cog ntshav yog tus qauv siv tam sim no rau kev kho mob ntawm txoj hlab ntshav ntawm cov leeg.
Feem ntau cov stents no yog ua los ntawm cov hlau thiab nyob twj ywm mus tas li nyob rau hauv lub artery tom qab implantation, npe nrov ib tug uas yuav loj kho mob yam mob. Yuav kom zam tau qhov teeb meem zoo li no, ib qho kev daws teeb meem yog cov bioabsorbable stent ua los ntawm cov khoom siv xws li poly-L-lactic acid (PLLA) lossis polylactic acid (PLA), tab sis vim tias nws cov qis melting taw tes, nws tsis tshua muaj qhov cuam tshuam rau thermal teebmeem. Bioabsorbable cov ntaub ntawv yog ib txoj haujlwm nyuaj, thiab femtosecond laser ua cov thev naus laus zis tuaj yeem tswj tau qhov kev puas tsuaj thermal ntawm tus qauv tuav qauv.
Daim duab (a) PLLA daim ntawv thiab (b) ib feem ntawm tus qauv ntawm femtosecond laser-txiav daim duab peb sab.
Raws li qhov tsis-GG quot; txias" kev siv tshuab thev naus laus zis tsis txwv los ntawm cov khoom siv, laser micromachining zoo heev txo cov txiaj ntsig ntawm ntau yam cuam tshuam xws li thaj chaw melting, thaj chaw tshav kub thiab cov yoj yoj ntawm cov khoom nyob ib puag ncig. Ultra-luv mem tes laser machining ntawm lub Scaffold enables tseeb daim phiaj lug thiab tus txiav chaw kom txo tau cov thermal los ntawm laser beam zog rau lub Scaffold khoom. Laser micromachining uas tsis yog-thermal ablation ua txoj kev muaj fundamentally ua bioabsorbable stent technology tau. Txawm li cas los xij, laser micromachined vascular stents yog qhov kim thiab muaj cov khoom lag luam qis. Yuav ua li cas yuav siv no technology kom paub muaj loj zus tau tej cov vascular stents yog ib qho mob ceev heev teeb meem rau kev soj ntsuam.