Ntsiab lus: Kho mob-Qib Stainless Hlau; AVF Needle Chaw tsim tshuaj paus

Hauv kev tsim khoom siv kho mob, tshwj xeeb tshaj yog rau cov koob tshuaj arteriovenous fistula (AVF) uas ncaj qha mus rau cov ntshav thiab rov qab ua dua, kev xaiv cov khoom yog deb ntawm qhov yooj yim ntawm "xaiv hom stainless hlau." Nws yog lub tswv yim nruj uas khi rau tus neeg mob kev nyab xeeb, kev kho mob zoo, thiab kev cia siab ntev ntev -. Rau lub luag haujlwm AVF koob chaw tsim khoom, lub hauv paus pob zeb ntawm nws cov txheej txheem zoo yog thawj zaug ntawm cov ntaub ntawv tshawb fawb.

Vim li cas Austenitic Stainless Hlau?

Tam sim no, ua AVF koob manufacturers dav siv AISI 304 lossis 316L austenitic stainless hlau. Qhov kev xaiv no sib npaug ntau qhov kev xav tau nruj. Ua ntej,exceptional corrosion kuj. Qhov sib xyaw ua ke ntawm cov neeg mob lim ntshav cov ntshav, ua ke nrog kev rov ua kom siab - lub voj voog ua kom tsis muaj menyuam, ua rau muaj teeb meem loj rau cov khoom siv. Cov ntsiab lus siab chromium nyob rau hauv 304 thiab 316L stainless hlau ua ib qho tsis tshua muaj nyias tab sis tawv chromium oxide passivation zaj duab xis rau ntawm qhov chaw. Txawm hais tias puas, cov yeeb yaj kiab no tus kheej - kho hauv oxygen- thaj chaw nplua nuj (xws li, huab cua), tiv taus pitting thiab kev ntxhov siab corrosion tshwm sim los ntawm cov ntshav, tshuaj tua kab mob, thiab siab - kub / siab- siab. Qhov no tiv thaiv cov hlau ion nag lossis daus tsis muaj zog ntawm lub cev koob thaum lub sijhawm siv sijhawm ntev -.

Thib ob,tseem ceeb biocompatibility. Qhov no mus dhau tsuas yog "tsis ua rau muaj kev fab tshuaj." Raws li ISO 10993 series ntawm cov cuab yeej siv kho mob kev tshuaj ntsuam xyuas cov khoom siv roj ntsha, cov ntaub ntawv yuav tsum dhau qhov kev xeem nruj rau cytotoxicity, rhiab heev, intradermal reactivity, thiab mob toxicity. Validated los ntawm ntau xyoo ntawm kev kho mob siv, 304 thiab 316L stainless hlau tau dav lees paub rau lawv cov kev ua tsis taus pa. Rau AVF koob manufacturers, xaiv cov ntaub ntawv ua tau raws li cov qauv no yog qhov tsim nyog yuav tsum tau ua ua ntej kom tsis txhob muaj cov ntaub so ntswg uas tsis tsim nyog los yog muaj tshuaj lom thaum lub sij hawm ntev -, rov ua dua vascular punctures.

Los ntawm Kev Ua Raws Cai mus rau Traceability: Qhov tseem ceeb ntawm cov ntaub ntawv pov thawj

Rau cov khoom lag luam zoo tib yam, cov khoom siv raw tsuas yog tus nqi xwb. Txawm li cas los xij, rau cov khoom siv kho mob-tshwj xeeb tshaj yog cov khoom siv ntawm qib siab - cov khoom siv phom sij hauv chav kawm III- cov khoom siv raw yuav tsum muajua tiav traceability. Lub siab -tus qauv AVF koob tshuaj tsis tau tso siab rau cov neeg muag khoom cov lus lees paub. Nws xav tau thiab khaws ciaCov ntaub ntawv pov thawjrau txhua pawg ntawm cov khoom siv hlau tsis zoo, feem ntau ua raws li ASTM A240 lossis cov qauv hauv tebchaws.

Daim ntawv pov thawj no ua haujlwm raws li cov khoom siv "ID card," piav qhia txog cov hlau melting rauv tooj, tshuaj lom neeg muaj pes tsawg leeg (cov qib siab ntawm carbon, chromium, npib tsib xee, molybdenum, thiab lwm yam), cov khoom siv kho tshuab (xws li, tensile zog, yield zog), thiab cov txiaj ntsig ntawm lub Hoobkas. Nrog rau daim ntawv pov thawj no, cov tuam txhab ua pov thawj tias cov ntaub ntawv ua tau raws li lawv cov kev qhia tshwj xeeb, nruj dua. Qhov tseem ceeb tshaj, nyob rau hauv qhov kev tshwm sim ntawm cov khoom zoo traceability, daim ntawv pov thawj no muaj teeb meem rov qab mus rau cov khoom siv raw-ib qho ntawm cov kev cai tseem ceeb ntawm ISO 13485 kev tswj xyuas cov cuab yeej kho mob zoo, thiab ua pov thawj rau cov chaw tsim khoom kev ntseeg siab thiab lub luag haujlwm rau cov khoom zoo.

316L vs . 304: Excellence dag nyob rau hauv cov ntsiab lus

Nyob nruab nrab ntawm 304 thiab 316L, hwm AVF koob cov khoom feem ntau xaiv rau 316L, tshwj xeeb tshaj yog nws cov qib qis -carbon variant ("L" qhia cov pa roj carbon tsawg). Qhov sib txawv tseem ceeb yog nyob hauvNtxiv ntawm molybdenum (Mo). Molybdenum ho txhim khu lub stainless hlau tsis kam rau pitting thiab crevice corrosion nyob rau hauv chloride ib puag ncig (xws li, saline, ntshav). Qhov no muab ib qho kev nyab xeeb ntxiv rau cov koob npaj rau ntev - lub sij hawm nyob hauv tsev lossis siv rau cov neeg mob uas muaj kev cai lij choj loj heev. Lub caij no, qhov qis - cov ntsiab lus carbon txo qhov kev pheej hmoo ntawm "intergranular corrosion" tshwm sim los ntawm carbide nag lossis daus ntawm cov qoob loo thaum lub sij hawm vuam los yog ua, kom ntseeg tau tias cov khoom siv corrosion kuj tseem zoo tom qab fabrication.

Xaus

Yog li, thaum ntsuas AVF koob tsim cov kws tshaj lij, nws cov tswv yim xaiv cov khoom siv yog qhov taw qhia thawj. Los ntawm ISO 10993-raws li biocompatibility validation thiab tag nrho cov ntaub ntawv pov thawj traceable mus rau meej daim ntawv thov ntawm 304 thiab 316L cov khoom sib txawv, tag nrho cov txheej txheem embodies ib"kev tiv thaiv-thawj" kab lis kev cai zoo. Cov tuam txhab lag luam sab saum toj nkag siab tias kev tswj hwm zoo tshaj plaws pib ua ntej cov ntaub ntawv raw txawm nkag mus rau hauv lub tsev rau khoom. Lawv tsim thawj kab ntawm kev tiv thaiv kev nyab xeeb nrog cov ntaub ntawv tshawb fawb, tso lub hauv paus tsis muaj kev cuam tshuam rau kev tsim khoom tom ntej thiab kev ua tau zoo dua. Qhov no tsis yog ib qho kev xaiv xwb, tab sis yog kev cog lus tseem ceeb rau lub neej thiab kev noj qab haus huv ntawm cov neeg mob lim ntshav.