https://radiologykey.com/essential- khoom siv- xuas nrig ntaus- koob/

Lub kaum sab xis

Demystify lub raj -kos duab, tswv yim- sib tsoo, laser- qhov rai (FNA), trough-notching (CNB), thiab electropolish cov kauj ruam tshwj xeeb rau biopsy/aspirationrab koob -vim li cas "tus txheej txheem hypodermic + me tweak" yog lus dab neeg.

Pib los ntawm kev ceeb toom tias rab koob txhaj tshuaj biopsy yog ib qho khoom siv ua qauv, tsis yog kua - lub raj xa khoom. Qhov sib txawv loj tshaj plaws yog nyias - phab ntsa raj:

14G CNB: OD ≈1.65 hli, phab ntsa 0.15 hli

18G CNB: OD ≈1.27 hli, phab ntsa 0.13 hli

22G FNA: OD ≈0.70 hli, phab ntsa 0.10–0.12 hli

Ua kom tiav cov phab ntsa thicknesses nrog ± 0.01 mm kam rau ua yuav tsum tau ntau -pass plug drawing nrog rau hauv - txheej txheem annealing. Qhov sib txawv ntawm 0.005 hli tuaj yeem ua rau lub lumen me dhau los hla lub hauv paus lossis tsis muaj zog dhau los tiv thaiv kev nkag torque - tshwj xeeb tshaj yog nyob rau hauv coaxial introducer puncture koob.

Tswv yim ua

Tom ntej no, lub tswv yim ua diverges los ntawm hom:

FNA puncture koob: 3-bevel lossis 4-bevel grind + side-hole laser txiav 1.5-3 hli los ntawm cov lus qhia. 5-axis laser kom tsis txhob muaj burr-dawb ntug; electrolytic polish sab hauv / sab nraud txo cov cell adhesion.

CNB puncture koob: Trocar tip hauv av kom phim cannula OD, qauv trough milled lossis laser - txiav kom ntev ntev ± 0.1 hli. Ib txhia siv etched (tshuaj milled) troughs; laser- txiav troughs xav tau ntug softening pass.

Kev kho saum npoo

Tom qab ntawd piav qhia txog kev kho saum npoo: electropolish rau Ra Tsawg dua lossis sib npaug ntawm 0.15 µm sab hauv / sab nraud; Passivation rau ASTM A967 rau 316L; ultrasonic huv + particulate suav rau ISO 8537 / ISO 7886 ntsuj plig (txawm tias tsis yog koob txhaj tshuaj -infusion, particulates tseem tseem ceeb).

Assembly & Function Test

Kev sib dhos & kev sim ua haujlwm: stylet (rau FNA) yuav tsum swb nrog 0.8-1.5 N tsis kam; CNB trigger mechanism (yog tias lub caij nplooj ntoos hlav-loaded) yuav tsum tua hluav taws thiab khaws cov notch tag nrho yam tsis muaj cov ntaub so ntswg crush - sim ntawm hluavtaws silicon lossis porcine ntaub so ntswg.

QC Highlights

QC qhov tseem ceeb: AOI ntawm sab-chaw nres nkoj/specimen notch, CMM ntawm lub ntsiab concentricity, torque test hauv simulated endoscope/introducer, bioburden yaug ua ntej EO.

Lub chaw tsim tshuaj tua kab tsis muaj nyob hauv -tsev nyias- phab ntsa kos duab + 5-axis laser + electrolytic polish yog qhov tseem ceeb ntawm lub tuam txhab lag luam - tsim nyog raws li.