Los ntawm 304 txog 316-Cov Khoom Siv Iteration Thiab Biosafety Analysis Ntawm 18G Biopsy Needles

Kev xaiv cov khoom siv raw hauv kev tsim khoom ntawmTxhaj Tshuaj & Puncture Instrumentstsis yog ib qho teeb meem tsis tseem ceeb; nws yog qhov kev txiav txim siab tsis muaj kev cuam tshuam rau kev nyab xeeb ntawm tus neeg mob, kev tswj hwm kev ua raws cai, thiab kev ua tiav kev kho mob ntev ntev. Rau peb18G Mos Tissue Biopsy Koob, qhov kev xaiv ntawmStainless hlau 304thiabStainless hlau 316yog nthuav tawm tsis yog tus nqi- txiav kev ntsuas, tab sis raws li qhov kev xaiv zoo raws li qhov chaw kho mob tshwj xeeb thiab cov neeg mob pej xeem. Nkag siab txog qhov sib txawv ntawm qhov sib txawv ntawm ob lub alloys no yog qhov tseem ceeb rau kev txaus siab rau qhov zoo nyob rau hauv txhua rab koob peb tsim.

Austenitic stainless hlau, xws li qib 304 thiab 316, yog cov pob txha ntawm cov cuab yeej kho mob kev lag luam vim lawv cov formability zoo heev thiab inherent corrosion kuj. Txawm li cas los xij, lawv qhov kev ua tau zoo nyob rau hauv ib puag ncig hostile ntawm tib neeg lub cev sib txawv heev.Stainless hlau 304, feem ntau hu ua "18-8" (18% chromium, 8% npib tsib xee), muaj qhov sib npaug ntawm lub zog thiab kev them taus. Nws yog qhov tsim nyog rau cov txheej txheem uas cov koob tau muab tso rau lub sijhawm luv luv thiab ntsib cov kua roj ntsha uas tsis zoo. Rau ntau daim ntawv thov niaj hnub, 304 stainless hlau muab kev txhim khu kev qha thiab kev lag luam uas ua tau raws li cov qauv kev lag luam thoob ntiaj teb.

Txawm li cas los xij, thaum qhov xwm txheej kho mob cuam tshuam nrog kev sib cuag nrog lub cev hnyav heev -xws li acidic ib puag ncig ntawm lub plab, cov tshuaj chloride - cov kua tsib nplua nuj nyob rau hauv hepatobiliary system, los yog purulent exudates nyob rau hauv cov kab mob abscesses -Stainless hlau 316Ldhau los ua cov khoom tsim nyog. Qhov "L" qhia txog cov ntsiab lus ntawm cov pa roj carbon tsawg, uas txo qis carbide nag lossis daus thaum vuam, thiab qhov sib ntxiv ntawm 2-3% Molybdenum (Mo) yog qhov kev ua si - hloov pauv. Molybdenum ho txhim khu cov hlau tsis kam rau pitting thiab crevice corrosion. Nyob rau hauv ib puag ncig saline zoo li tib neeg cov hlab ntsha, chloride ions aggressively tua passive txheej ntawm hlau. Lub molybdenum nyob rau hauv 316L txhawb kev tsim ntawm ib tug ruaj khov thiab kho tus kheej passive zaj duab xis, tiv thaiv qhov pib ntawm microscopic pits uas tuaj yeem ua rau muaj kev puas tsuaj ntawm cov txheej txheem tsis ua haujlwm lossis tso tawm cov hlau ions rau hauv cov ntaub so ntswg.

Kev tsim cov teeb meem cuam tshuam nrog 316L yog qhov tseem ceeb. Nws superior hardness thiab tensile lub zog, thaum muaj txiaj ntsig rau qhov kawg -neeg siv, ua rau muaj teeb meem thaum lub sij hawm fabrication txheej txheem. Lub koob tubing yuav tsum tau ua ntau theem ntawm kev kos duab thiab annealing. Thaum lub sij hawm sib tsoo lub taub hau, 316L txoj kev nyiam ua haujlwm- tawv txhais tau hais tias cov pob zeb diamond tshwj xeeb abrasives thiab cov tshuab ua kom txias zoo yuav tsum tau tiv thaiv microfractures ntawm qhov txiav. Yog tias cov microfractures no tsis raug tshem tawm los ntawm kev ua haujlwm tom ntej, lawv tuaj yeem nthuav tawm thaum lub sijhawm siab - tua hluav taws ntawmSemi- tsis siv neeg caij nplooj ntoos hlav loaded biopsy system, tej zaum yuav ua rau muaj qhov tsis tshua muaj tab sis loj "koob tawg" tshwm sim hauv tus neeg mob.

Txhawm rau txo cov kev pheej hmoo no thiab txhim kho biocompatibility ntxiv, peb cov txheej txheem tsim khoom suav nrog kev nrujElectropolishingkev tswj hwm. Feem ntau piav raws li "rov qab plating," electropolishing siv lub da dej electrochemical kom tshem tawm cov txheej txheem tswj ntawm cov khoom nto. Cov txheej txheem no yog qhov zoo tshaj rau kev siv tshuab buffing. Ua ntej, nws tshem tawm cov kab mob microscopic burrs thiab "frazes" sab laug los ntawm laser txiav lossis sib tsoo, uas tuaj yeem txwv tsis pub tawm hauv lub cev lossis ua rau hemolysis. Qhov thib ob, nws zoo dua tshem tawm cov hlau- nplua nuj txheej txheej, ua kom lub ntsej muag nrog chromium thiab npib tsib xee oxides. Qhov no tsim ib txheej passive uas tsis yog tsuas yog thicker tab sis kuj zoo ib yam li qhov tshwm sim lawm. Qhov tshwm sim yog qhov ua tiav saum npoo ntsuas hauv micro- ntiv tes uas txo qis kev sib txhuam, tso cai rau rab koob kom glide los ntawm cov ntaub so ntswg nrog tsawg tsawg, thiab txo qhov kev pheej hmoo ntawm kev tsis haum tshuaj rau leached nickel ions.

Traceability yog lwm lub hauv paus ntawm peb cov txheej txheem biosafety. Txhua lub spool ntawm raw stainless hlau xaim yog nrog los ntawm Mill Test Report (MTR) certification nws cov tshuaj muaj pes tsawg leeg thiab txhua yam khoom. Cov ntaub ntawv no yog archived digitally rau lub neej ntawm cov khoom ntau. Hauv peb lub chaw soj ntsuam Kev Tswj Xyuas Zoo, cov qauv random tau txais Atomic Absorption Spectroscopy (AAS) los txheeb xyuas cov nqi tso tawm npib tsib xee, ua kom muaj kev ua raws li ISO 10993-15 thiab lwm cov qauv biocompatibility thoob ntiaj teb. Peb lees paub tias rau cov neeg mob uas muaj qhov tsis txaus ntseeg ua ntej, qhov kev xaiv ntawm 316L tshaj 304 tuaj yeem yog qhov sib txawv ntawm kev rov qab zoo thiab muaj teeb meem inflammatory.

Tsis tas li ntawd, kev sib cuam tshuam ntawm cov khoom siv koob thiab txoj kev ua kom tsis muaj menyuam tsis tuaj yeem raug saib xyuas. Thaum peb18G Mos Tissue Biopsy Koob​ yog feem ntau sterilized siv Ethylene Oxide (EO), uas yog maj mam ntawm cov hlau, peb kuj validate compatibility nrog Gamma irradiation rau tej export lag luam . 316L's enhanced corrosion kuj xyuas kom meej tias rov raug rau sterilization cycles - los yog raug xwm txheej los ntxuav cov kev xav tau ntawm cov degrade '{2} kev ncaj ncees. Los ntawm kev muab ob qho tib si 304 thiab 316L kev xaiv, txhawb nqa los ntawm kev siv cov hlau tsis zoo thiab cov thev naus laus zis zoo tshaj plaws, peb txhawb cov kws kho mob kom paub cov kev xaiv raws li cov kev xav tau tshwj xeeb ntawm lawv cov neeg mob, yog li txhawb nqa cov qauv siab tshaj plaws ntawm biosafety hauv cov tshuaj tsawg tsawg.