Nyob rau hauv xyoo tas los no, laser ua tau nce siv hauv kev tsim khoom siv kho mob, xws li precisionlaser txiav khoom, cov khoom siv kho mob laser vuam, cov khoom siv laser drilling, cov khoom siv laser npav, thiab lwm yam. Cov khoom siv no tuaj yeem siv los ua cov txheej txheem kho mob stents, lub plawv valve stents, endoscopic Bending Sections thiab txhua yam ntawm cov cuab yeej phais.
Fiber lasers nyob hauv txoj haujlwm tseem ceeb hauv kev tsim khoom siv kho mob vim lawv cov nqi qis, lub zog loj thiab lwm yam zoo.Laser li xws li picosecond thiab femtosecond muaj qhov zoo ntawm kev txiav zoo, tab sis lawv cov kev lag luam sib faib tau me me rau lub sijhawm ntev.
Nyob rau hauv xyoo tas los no, nrog rau cov kev xav tau ntawm cov cuab yeej kho mob ntau ntxiv rau kev txiav cov khoom zoo, cov cuab yeej tseem ceeb tshawb fawb thiab kev txhim kho cov khoom siv kho mob laser tau nrawm dua, thiab cov lasers ultrafast xws li femtoseconds yuav dhau los ua cov laser nyiam hauv cov khoom siv kho mob tsim daim ntawv thov scenarios, thiab cov lasers no. yog tas li nkag mus rau ntau yam kev kho mob.
Ntawm cov khoom siv kho mob tsim los siv femtosecond lasers, neurological thiab cardiovascular stents feem ntau yog.Lub femtosecond laser enables meej machining ntawm burrless, micron-scale stent khoom ntawm cov khoom siv kho mob, uas yog ib qho tseem ceeb los tiv thaiv kev tiv thaiv kab mob / tsis lees paub thaum muab tso rau hauv tib neeg lub cev.Ntau cov kev kho mob stents yog ua los ntawm nickel-titanium alloy, yav dhau los kev siv tshuab siv tshuab los ua cov nickel-titanium alloy tsis yooj yim, femtosecond laser tau dhau los ua ib qho txiaj ntsig zoo.
Lub tswv yim ntawm "kev cuam tshuam yam tsis muaj implantation" yog ib qho tseem ceeb hauv kev tsim kho tshiab ntawm kev kho mob coronary interventional.Lub plawv stents kom deb li deb tau muab faib ua plaub theem: ntshiab balloon dilation, liab qab hlau stents, tshuaj-eluting stents, thiab biodegradable stents.
Tsis zoo li yav dhau los lub plawv stents, biodegradable stents yog scaffolds ua los ntawm degradable polymer cov ntaub ntawv (xws li polylactic acid) uas yuav decomposed thiab absorbed los ntawm tib neeg lub cev nyob rau hauv ib tug tej lub sij hawm ntawm lub sij hawm.Thaum kho cov hlab ntsha, cov stent degrades ncaj qha mus rau hauv dej thiab carbon dioxide nyob rau hauv lub cev, piv rau cov tsoos hlau - thiab tshuaj coated stents.Cov pov thawj kev tshawb fawb uas twb muaj lawm qhia tau hais tias qhov ua tau zoo ntawm biodegradable stents yog qhov tseeb, uas tuaj yeem tshem tawm cov kev cuam tshuam ntawm cov seem seem ntawm stents ntawm kev rov ua haujlwm ntawm cov hlab ntsha thiab txo qhov tshwm sim ntawm cov xwm txheej tsis zoo tom qab PCI.
Nrog nws qhov tshwj xeeb zoo, cov ntaub ntawv degradable stent yuav maj mam dhau los ua tus qauv tseem ceeb hauv kev tsim kho thoob ntiaj teb lub plawv stent tshuab.Hauv kev ua cov khoom siv polymer no thiab lwm cov ntaub ntawv tsis yog xim hlau, yog tias cov fiber ntau laser ua, cov khoom yuav raug cua sov thiab hloov cov tshuaj muaj pes tsawg leeg, uas yuav ua rau lom lom lom.Yog tias koj xav txo qis cov teebmeem thermal no thiab xyuas kom zoo ntawm kev ua haujlwm, qhov kev xaiv thawj zaug yog femtosecond laser khoom.
Ib qho txiaj ntsig tseem ceeb ntawm kev siv femtosecond (10^-15s) pulses piv rau nanosecond lossis txawm tias picosecond pulses yog tias lub sijhawm sib cuag ntawm lub nqaj thiab lub workpiece raug txo kom ntau li ntau tau, txo qhov kub ntawm thaj tsam ntawm lub workpiece thiab yog li ntawd. txo cov kev tsis zoo tshwm sim los ntawm cov cua kub ntau dhau.Rau qee cov khoom siv kho mob, suav nrog stents, qhov no tseem ceeb heev rau kev txhim kho biocompatibility ntawm cov khoom cog.
Femtosecond lasers tuaj yeem ua cov khoom lag luam nrog siab precision.Kev kho mob coronary stents feem ntau nyob rau hauv txoj kab uas hla ntawm 2 mus rau 5 hli thiab ntev ntawm 13 mus rau 33 hli.Lub tshuab femtosecond laser tau pom zoo yog tias koj xav tau cov ntsiab lus zoo stent thiab txiav uas txo qhov kev pheej hmoo ntawm biopolymer hloov pauv lossis hlau oxidation.Los ntawm kev xav ntawm tag nrho cov txheej txheem tsim stent, lwm qhov zoo ntawm femtosecond laser yog txo qis cov kev xav tau tom qab ua tiav tom qab txiav cov stent.
Femtosecond laser txiav vs Fiber laser txiav nyhuv
Kev nce qib tsis ntev los no hauv femtosecond laser thev naus laus zis tau txhaj tshuaj muaj peev xwm ntau dua rau hauv kev ua cov cuab yeej kho mob, tshem tawm cov teebmeem thermal thaum txo qis tom qab ua tiav.
Post lub sij hawm: Lub Xya hli ntuj-25-2023