Pain Points

Nitinol, nrog rau nws qhov tshwj xeeb superelastic thiab zoo li - lub cim xeeb khoom, yog cov khoom siv zoo tshaj plaws rau cov khoom siv endovascular. Txawm li cas los xij, kev ua cov nitinol rau hauv cov qauv kev sib tw uas tsis muaj kev cuam tshuam rau nws cov khoom ua haujlwm yog qhov nyuaj heev. Ib txwm siv tshuab txiav txoj hauv kev ua rau kev ua haujlwm nyuaj thiab micro- tawg, degrading cov khoom lub neej qaug zog. Laser txiav, yog tias tsis tswj kom zoo, tuaj yeem tsim cov cua sov- cov cheeb tsam cuam tshuam uas hloov cov theem hloov pauv kub, ua rau lub cuab yeej tsis zoo. Ntxiv mus, qhov me me feature qhov ntau thiab tsawg yuav tsum tau muab kauv txiav (kerf widths tsawg li 0.012 hli) thov tshwj xeeb precision. Cov kev cov nyom no tau txwv tsis pub siv dav dav ntawm nitinol kauv hypotubes hauv cov ntawv thov tseem ceeb xws li cov kev cuam tshuam hauv neurovascular lossis peripheral, qhov kev ntseeg siab yog qhov tseem ceeb.

Txoj Cai Taw Qhia

Kauv laser txiav ntawm nitinol hypotubes cia siab rau ultrafast laser tshuab kom ablate cov khoom nrog tsawg tshav kub input. Femtosecond lasers, nrog cov mem tes ntev nyob rau hauv 10^-15 thib ob ntau, tso lub zog sai sai uas cov khoom vaporizes ua ntej tshav kub tuaj yeem mus rau thaj tsam ib puag ncig. Cov txheej txheem "txias ablation" no khaws cia cov nitinol's crystalline qauv thiab superelastic zog. Cov qauv kauv yog tsim los ntawm synchronizing kev sib hloov ntawm lub raj nrog lub zog ntawm lub laser beam, tsim kom muaj kev txiav helical txuas ntxiv. Los ntawm kev sib txawv ntawm lub suab thiab qhov tob, engineers tuaj yeem ua qhov yooj yim thiab torque teb ntawm lub hypotube. Qhov tshwm sim yog nitinol ncej uas tuaj yeem taug kev tortuous hlab ntsha thaum tuav lub peev xwm rov qab tau nws cov duab tom qab deformation.

Kev faib khoom siv

Femtosecond laser tshuabnrog wavelengths ntawm 1030 nm los yog 515 nm yog nyiam rau nitinol.Galvanometer scanners​ muab siab -ceev beam steering rau txiav ceev.Precision rotary theem​ nrog nanometer -theem angular daws teeb meem kom muab kauv uniformity.Hauv - saib xyuas qhov chawsiv optical coherence tomography (OCT) txheeb xyuas kev txiav zoo.Cleanroom ib puag ncigyog qhov tseem ceeb los tiv thaiv kev kis kab mob. Tshaj tawm - kev ua tiav suav nrogtshuaj etchingthiabelectropolishingtshem tawm cov txheej txheem rov qab thiab txhim kho qhov chaw tiav.

Phau Ntawv Qhia

Xaiv ib lub raj nitinol nrog qhov tsim nyog hloov pauv kub (Af feem ntau 20-30℃). Mount lub raj nyob rau hauv ib tug teb fixture thiab kho lub laser beam perpendicular rau saum npoo. Program tus qauv kauv siv CAM software, qhia meej suab, qhov tob, thiab pib / kawg cov ntsiab lus. Teem lub laser tsis: tsis muaj zog ib mem tes, siab repetition tus nqi, thiab pab roj (argon) los tiv thaiv oxidation. Ua ib qho kev xeem txiav thiab txheeb xyuas tus ntoo khaub lig-section siv SEM. Tom qab txiav, tshuaj pleev xim kom tshem tawm cov cua sov- thaj chaw cuam tshuam, ua raws li electropolishing kom ua tiav qhov chaw du. Kev coj tus qauv- teeb tsa los ntawm kev txwv lub raj hauv lub teeb thiab cua sov- kho ntawm 500℃. Thaum kawg, ua qhov kev ntsuam xyuas qaug zog kom siv tau cov kav ntev.

Tiag -Kev Paub Txog Ntiaj Teb

Hauv kev siv tshuaj kho mob, nitinol kauv laser txiav hypotubes tau pom zoo kink tsis kam thiab kev taug qab hauv cov ntawv thov neurovascular thiab peripheral. Txawm li cas los xij, cov tuam ntxhab tau kawm tias txawm tias qhov kev hloov pauv me me hauv laser tsis tuaj yeem ua rau muaj kev hloov pauv tseem ceeb hauv cov khoom siv. Yog li ntawd yuav tsum tau muaj kev tswj xyuas nruj thiab kev sim dav dav. Qee lub tuam txhab tau txais yuavTsim kev sim (DOE)methodologies los optimize tej tej yam kev mob. Nto tiav tseem yog qhov tseem ceeb; ib tug ntxhib nto tuaj yeem ua kom corrosion los yog ua rau thrombogenicity. Electropolishing tam sim no suav tias yog ib kauj ruam yuav tsum tau ua.

Summary & Sublimation

Lub precision muab kauv laser txiav ntawm nitinol hypotubes sawv cev rau kev vam meej ntawm kev tsim khoom siab dhau los ntawm cov khoom sib tw. Los ntawm kev ua kom muaj kev tsim cov txheej txheem nyuaj, ua haujlwm zoo hauv cov duab-memory alloy, cov thev naus laus zis no tau nthuav dav txoj kev kho mob endovascular. Nws yog ib qho piv txwv ci ntsa iab ntawm yuav ua li cas engineering innovation tuaj yeem txhim kho cov txiaj ntsig ntawm tus neeg mob.

Kev Cia Siab & Cov Lus Qhia

Kev tshawb nrhiav yav tom ntej tuaj yeem tshawb nrhiavlaser txiav ntawm nitinol nrog integrated sensing ntsiab, xws li strain gauges.Hybrid manufacturingKev sib txuas ntawm laser txiav nrog cov khoom siv ntxiv tuaj yeem tsim cov khoom siv ntau yam. Manufacturers yuav tsum nqis peev nyob rau hauvtxheej txheem qauvlos kwv yees thiab txo cov teebmeem kub. Standardization ntawm nitinol laser txiav cov txheej txheem yuav yog qhov tseem ceeb rau kev siv dav dua. Kev koom tes nrog cov kws tshawb fawb ntawm cov khoom siv yuav tsav kev txhim kho cov nitinol alloys tshiab tau zoo rau kev ua laser.