Ntsiab lus: Electropolishing; AVF Needle Chaw tsim tshuaj paus

Tom qab kev tsim khoom ntawm AVF koob thiab ua ntej ntim thiab warehousing, muaj ob seemingly "auxiliary" tseem tseem ceeb txheej txheem:electropolishingthiabultrasonic tu. Thaum lawv tsis hloov lub koob lub macroscopic qhov ntev, lawv profoundly txhais nws qhov chaw. Ua haujlwm ua tus choj kawg thiab tseem ceeb tshaj plaws ntawm "cov khoom lag luam" thiab ib qhoimplantable - qib khoom siv kho mob, cov txheej txheem no cuam tshuam ncaj qha rau cov neeg mob kev nyab xeeb thiab kev noj qab haus huv fistula.

Electropolishing: Lub Hwjchim Microscopic Tshaj dhau "Polishing"

Electropolishing feem ntau yog to taub yuam kev raws li ib qho yooj yim "ci plating" txheej txheem. Nyob rau hauv qhov tseeb, nws yog ib tug precisely tswj electrochemical anodic dissolution txheej txheem. Thaum lub koob ua raws li ib qho anode rau hauv ib qho electrolyte thiab ib qho hluav taws xob tam sim no siv, microscopic protrusions ntawm nws qhov chaw muaj kev paub ntau dua tam sim no ceev thiab nrawm dua ntawm cov hlau ions, yog li raug tshem tawm nyiam dua. Cov txheej txheem no muab ntau yam txiaj ntsig tseem ceeb uas tsis tuaj yeem hloov pauv:

Tshem tawm cov teeb meem microscopic: Mechanical sib tsoo thiab laser txiav inevitably tawm micro-burrs, flash, thiab microcracks. Cov teeb meem no ua raws li cov ntsiab lus kev ntxhov siab thiab "cov chaw ruaj khov" rau cov kab mob. Electropolishing smoothly tshem tawm cov protrusions nkaus, ua tiavburr-dawb nto ntawm qhov chaw. Qhov tshwm sim ultra- qhov chaw du ua rau txo qhov kev sib tsoo thiab kev puas tsuaj rau cov hlab ntsha phab ntsa.

Txo Nto Roughness: Nto tiav (Ra tus nqi) ncaj qha cuam tshuam rau ntshav sib xws. Cov npoo ntxhib yog qhov yooj yim rau kev ua kom cov platelets thiab coagulation yam, ua rau muaj kev pheej hmoo ntawm thrombosis. Electropolishing txo qhov roughness ntawm qhov chaw los ntawm qhov kev txiav txim ntawm qhov loj, tsim ib daim iav -zoo li nto. Qhov no ua rau txo qis platelet adhesion thiab ua kom muaj zog, txo qis qhov tshwm sim ntawm thrombus tsim nyob rau hauv lub koob - tseem ceeb rau kev kho mob ntshav qab zib anticoagulated.

Tsim ib tug Passivation Protective Layer: Thaum lub sij hawm dissolution, chromium nyob rau hauv stainless hlau accumulates nyob rau saum npoo, tsim ib tug thicker, ntau yam, thiab ruaj khov chromium oxide passivation zaj duab xis. Cov yeeb yaj kiab no yog qhov tseem ceeb ntawm cov koob tshuaj tiv thaiv corrosion. Electropolishing txhawb qhov kev thaiv ntuj no, txhim kho kev tiv thaiv mus ntev - lub sij hawm yaig los ntawm cov ntshav thiab tshuaj tua kab mob. Nws tiv thaiv cov nag lossis daus ntawm cov hlau ions (piv txwv li, npib tsib xee, chromium), ua kom muaj kev ruaj ntseg biocompatibility.

Kev npaj rau kev ntxuav kom tob: Cov txheej txheem electropolishing nws tus kheej strips qee cov kab mob saum npoo, tsim kom muaj kev sib haum xeeb rau kev tu tom ntej.

Ultrasonic Tu: "Ntxhiab purification" ncav cuag lub ntiaj teb Microscopic

Txawm tias tom qab electropolishing, cov khoom zoo heev, cov roj ua haujlwm, lossis cov khoom siv polishing yuav nyob twj ywm ntawm cov khoom nto thiab cov lumens sab hauv (xws li, hauv cov hubs nrog sab qhov). Yog tias cov residues nkag mus rau hauv cov hlab ntsha, lawv tuaj yeem ua pyrogens, microemboli, lossis ua rau cov lus teb inflammatory.Ultrasonic tuyog qhov kawg daws rau lawv tshem tawm.

Nws lub hauv paus ntsiab lus tso siab raucavitation nyhuvtsim los ntawm qhov siab - zaus (feem ntau 20–40 kHz) ultrasound hauv cov tshuaj ntxuav: suav tsis txheeb cov npuas me me hauv lub tshuab nqus tsev thiab ua phem implode instantaneously, ua rau thaj tsam huab cua siab thiab kub. Cov microscopic zog shockwaves nkag mus rau txhua lub ces kaum ntawm qhov tsis pom micro- qhov khoob, qhov, thiab cov geometries nyuaj, tshem tawm cov kab mob tag nrho.

Lub chaw tsim tshuaj AVF nruj nruj siv ntau- cov txheej txheem tu, uas tej zaum yuav muaj xws li cov organic hnyav degreasing, alkaline detergent tu, thiab ntau yam yaug nrog dej huv lossis dej rau kev txhaj tshuaj. Tom qab txhua kauj ruam, kev suav particle thiab tsis yog -Volatile residue (NVR) kuaj yog ua nyob rau hauv cov tshuaj ntxuav kom ntseeg tau tias cov khoom kawg ua tau raws li cov qauv kev huv huv xws li YY/T 0149 lossis nruj me ntsis hauv kev lag luam specifications. Rau AVF koob, tshwj xeeb tshaj yog lawv cov lumens sab hauv, tswj cov tshuaj endotoxins thiab cov kab mob endotoxins yog qhov tseem ceeb, lav los ntawm cov txheej txheem ntxuav thiab kuaj zaum kawg.

Synergistic Effect: A Quality Fortress of 1+1>2

Electropolishing thiab ultrasonic tu tsim ib qho kev sib xyaw zoo. Electropolishing ua ntej tsim ib qho microscopically du, zoo, thiab inert nto substrate. Tam sim ntawd tom qab ntawd, kev ntxuav ultrasonic muab tag nrho -encompassing qhov kawg purification rau no "zoo meej substrate." Ua ke, lawv xyuas kom meej tias ua ntej implantation, AVF koob nto ua tiav qhov kev pom ntawm lub xeevkev huv ntawm lub cev (particle-dawb), chemical huv huv (residue-dawb), thiabKev huv huv lom lom (tsawg endotoxin).

Xaus

Yog li ntawd, thaum soj ntsuam qhov tob tob ntawm lub chaw tsim khoom AVF koob, tus qauv ntawm nws cov txheej txheem ntxuav thiab ua tiav ua haujlwm yog qhov taw qhia tseem ceeb. Qhov no tsis yog kev txhim kho, tab sis akev ruaj ntseg puag. Los ntawm kev nqis peev nyob rau hauv thiab mastering electropolishing thiab ultrasonic tu technologies, manufacturers txhawb cov khoom zoo los ntawm "macroscopic precision" mus rau theem ntawmmicroscopic cleanliness thiab biocompatibility. Lawv ntxuav tsis tau tsuas yog rab koob nto xwb tab sis kuj ua rau pom kev hwm rau tus neeg mob lub neej kev nyab xeeb. Nws yog qhov tsis pom, kev siv zog ua kom zoo uas tiv thaiv kev nyab xeeb thiab ua tau zoo ntawm txhua qhov kev kho mob lim ntshav, muab cov koob tshuaj txias txias nrog lub zog sov los tiv thaiv lub neej.