Lub luag haujlwm ntawm Kerf Dav hauv Hypotube Kink Resistance

Taw Qhia: Qhov Pain Point

Hauv micromachining ntawm kev kho mob hypotubes, qhov "kerf dav"- qhov dav ntawm cov khoom tshem tawm los ntawm laser- yog qhov tseem ceeb tsis zoo uas feem ntau tsis saib xyuas. Qhov mob taw tes rau cov tuam txhab lag luam yog qhov "precision paradox": lub nqaim nqaim khaws cia ntau dua ntawm cov tube qub lub zog, tab sis nws kuj ua rau muaj kev pheej hmoo ntawm "recast" thiab "slag" buildup, uas tuaj yeem cuam tshuam cov cuab yeej ua haujlwm. Yog hais tias lub kerf dav dhau lawm, qhov "av" ntawm qhov kev txiav yuav nqaim dhau, txo lub raj lub zog thiab ua rau nws yooj yim rau kinking hauv compression. Hloov pauv, yog tias lub kerf nqaim dhau lawm, lub laser yuav tsis tuaj yeem nkag mus rau hauv cov khoom, ua rau "hanging chads" uas tuaj yeem tawg hauv tus neeg mob. Qhov kev sib npaug sib npaug ntawm cov khoom tshem tawm thiab kev ua haujlwm ruaj khov yog qhov kev sib tw hauv nruab nrab hauv kev tsim cov qib siab -kev ua tau zoo, kink- tiv taus hypotubes.

Txoj Cai: Kev Tshawb Fawb ntawm Kink Resistance

Lub hauv paus ntsiab lus ntawm kink tsis kam nyob rau hauv kev sib raug rau kerf dav yog raws li "section modulus" ntawm cov qauv txiav. Cov seem modulus yog cov cuab yeej geometric uas qhia tau hais tias lub nqaj (los yog lub raj) tsis kam khoov. Thaum lub laser tshem tawm cov khoom, nws txo cov seem modulus. Txawm li cas los xij, los ntawm kev tshem tawm cov khoom hauv ib qho qauv tshwj xeeb, peb kuj txo qhov "bending stiffness" ntawm lub raj, cia nws deflect ntau dua ua ntej mus txog nws qhov txiaj ntsig. Qhov "zoo" kerf dav yog ib qho uas txo qhov txo qis hauv seem modulus thaum ua kom qhov "hinge" cuam tshuam ntawm kev txiav. Ib qho dav dav ntawm 0.012mm, piv txwv li, feem ntau raug suav tias yog "qhov chaw qab zib" rau ntau daim ntawv thov. Ntawm qhov dav no, lub laser tuaj yeem tsim kom huv si, dross -dawb txiav yam tsis muaj qhov ua rau lub raj tsis muaj zog. Qhov tshwm sim "nyob hinges" tso cai rau lub raj khoov mus rau lub vojvoog nruj yam tsis muaj kev ntxhov siab ntau dua li cov khoom siv lub zog, yog li tiv thaiv kinking.

Kev faib khoom siv: Laser txiav tshuab

Ua kom tiav qhov dav kerf dav uas yuav tsum tau muaj rau kink-cov kab mob hypotubes xav tau cov cuab yeej tshwj xeeb:

Hom-Hop-Dawb Fiber Lasers:​ Cov lasers no muab qhov ruaj khov, ib qho - hom kab teeb uas tuaj yeem tsom mus rau qhov chaw me me li 10 microns, uas tso cai rau kev tsim khoom zoo ib yam ntawm ultra-Kerfs nqaim.

Beam Shaping Optics:​ Cov khoom siv no tuaj yeem hloov pauv lub laser beam "Gaussian" profile rau hauv "sab saum toj- kaus mom" profile, kom ntseeg tau tias lub zog tsis sib xws thoob plaws kerf thiab tiv thaiv "tapering" ntawm cov phab ntsa txiav.

Tiag -Lub Sijhawm Kerf Saib Xyuas Systems:​ Siv - lub koob yees duab ceev thiab laser triangulation, cov tshuab no tuaj yeem ntsuas qhov dav dav hauv lub sijhawm tiag tiag- thiab kho lub zog laser lossis ceev ntawm ya kom tswj tau qhov tseeb, kom ntseeg tau tias txhua qhov kev txiav ua rau lub raj lub kink tsis kam.

Phau Ntawv Qhia Txog Kev Ua Haujlwm: Kev tsim cov kev coj ua zoo tshaj plaws

Yuav kom paub qhov dav kerf, manufacturers yuav tsum ua raws li txoj cai nruj. Ua ntej, "focus position" ntawm lub laser yuav tsum tau calibrated txhua hnub. Qhov sib txawv ntawm ob peb microns tuaj yeem hloov pauv qhov dav dav dav. Qhov thib ob, "pab pa" siab (feem ntau yog oxygen lossis nitrogen) yuav tsum tau ua kom zoo dua. Cov roj tsawg dhau, thiab cov kerf yuav tau ntim nrog cov khoom molten (recast); ntau dhau lawm, thiab cov pa roj yuav "tshuab tawm" lub pas dej ua ke, tsim kom muaj qhov dav dua li qhov xav tau. Thib peb, "lub sijhawm mem tes" yuav tsum tau khaws cia luv luv (hauv thaj tsam nanosecond) kom txo qis "kub- thaj chaw cuam tshuam" (HAZ). HAZ loj tuaj yeem hloov kho cov khoom siv microstructure, ua rau nws nkig thiab ua rau kinking. Thaum kawg, "post-txiav tshuaj xyuas" siv lub tshuab ntsuas hluav taws xob scanning (SEM) feem ntau tsim nyog los txheeb xyuas qhov dav dav thiab xyuas kom nws ua tau raws li qhov yuav tsum tau ua kom nruj rau kink tsis kam.

Tiag -Kev Paub Txog Ntiaj Teb: Cov Lus Qhia los ntawm Teb

Ib lub tuam txhab ua lag luam ntawm PTCA catheters ib zaug tau ntsib tus nqi rov qab los ntawm "ncej kinking" thaum lub sij hawm soj ntsuam. Tom qab kev tshuaj xyuas dav dav, lawv pom tias qhov teeb meem tsis yog cov qauv txiav, tab sis qhov dav kerf. Lawv lub laser tau tsim lub kerf uas yog 0.005mm dav dua li tau teev tseg, uas, dhau ntawm qhov ntev ntawm 1-meter catheter, ua rau muaj qhov tsis zoo ntawm kab ke. Los ntawm kev kho dua tshiab rau lub laser nrog lub teeb pom kev zoo dua qub thiab siv lub sijhawm tiag tiag kerf saib xyuas, lawv muaj peev xwm ua kom nruj lawv cov kev ua siab ntev thiab zoo tshem tawm qhov teeb meem kinking. Qhov kev paub no qhia txog qhov tseeb tias hauv ntiaj teb ntawm hypotubes, "microns tseem ceeb." Qhov sib txawv ntawm kev vam meej thiab tsis ua haujlwm tuaj yeem ua me me raws li qhov dav ntawm tib neeg cov plaub hau.

Xaus thiab Sublimation

Qhov dav kerf yog "invisible hero" ntawm kink-resistant hypotube. Nws yog ib qho parameter uas tsis tshua pom los ntawm qhov kawg - neeg siv tab sis yog qhov tseem ceeb rau lub cuab yeej ua haujlwm. Lub sublimation ntawm cov cuab yeej no yog nyob rau hauv kev nrhiav kev zoo tag nrho ntawm qib microscopic. Los ntawm mastering lub kerf, manufacturers tsis yog tsuas yog txiav hlau; lawv sculpting qhov tseem ceeb ntawm kev ntseeg siab thiab kev nyab xeeb. Nws yog ib qho pov thawj rau lub tswv yim tias hauv kev lag luam khoom siv kho mob, cov ntsiab lus me tshaj plaws muaj qhov cuam tshuam loj tshaj plaws rau tib neeg lub neej.

Cov kev cia siab thiab cov lus pom zoo

Lub neej yav tom ntej ntawm kerf dav tswj nyob rau hauv "adaptive optics" thiab "machine learning." Peb tawm tswv yim rau kev txhim kho cov tshuab laser uas tuaj yeem "kawm" qhov zoo tshaj plaws kerf dav rau cov khoom siv thiab cov qauv, kho qhov tseeb - lub sijhawm los them rau txhua qhov kev hloov pauv hauv cov raj raj phab ntsa tuab lossis muaj pes tsawg leeg. Tsis tas li ntawd, kev lag luam yuav tsum tshawb nrhiav "tsis yog-thermal" txoj kev txiav, xws li "dej dav hlau coj lasers," uas tuaj yeem tsim nyob ze -zero kerf widths uas tsis muaj cua sov- thaj tsam cuam tshuam. Raws li cov cuab yeej txuas ntxiv zuj zus, lub peev xwm los tswj cov kerf ntawm sub-micron qib yuav dhau los ua qhov tseem ceeb hauv kev ua haujlwm ntawm tom ntej - tiam kink- cov kab mob hypotubes.