Lub taub ntawm EBUS-TBNA koob siv qhov Back Cut Point tsim, uas muaj qhov txuas rov qab los txiav ntug ua raws li cov qauv bevel. Cov qauv geometric no ua rau lub taub hau txiav cov ntaub so ntswg zoo dua thaum nkag mus rau phab ntsa tracheal lossis cov qog ntshav qog, txo qis cov ntaub so ntswg laceration thiab boosting specimen kev ncaj ncees.

Thaum lub sij hawm fabrication, centerless grinders ua ntej ua ntej -form tubing rau lub hom phiaj taper, ua raws li siab - precision CNC grinders uas tshuab rov qab - txiav bevels nrog ib tug positioning raug ntawm ± 0.01 hli. Cov kev sib tsoo - suav nrog abrasive grain loj, pub tus nqi thiab qhov kub thiab txias - yog nruj me ntsis tswj kom tsis txhob thermal puas tsuaj uas ua rau lub zos hardening los yog burr tsim. Thaum kawg deburring thiab passivation tawm los ntse, du txiav npoo.

EBUS cov txheej txheem cia siab rau tiag tiag - lub sij hawm ultrasound imaging rau navigate rab koob mus rau lub hom phiaj qhov txhab, yog li lub koob ncej yuav tsum xa superior echogenicity. Cov pa hlau liab qab ua rau tsis muaj zog ultrasonic reflections thiab nyuaj rau kev paub qhov txawv ntawm kev tshuaj ntsuam.

Cov neeg tsim khoom siv 5-axis laser txiav tshuab rau etch intricate kauv grooves lossis dot matrices rau ntawm phab ntsa sab nrauv. Fiber lossis CO₂ laser beams scan nrawm ntawm galvanometer systems, ablating deg cov ntaub ntawv los ua micro-textures 10-50 μm tob. Cov kev ntxhib los mos ua raws li acoustic reflective interfaces, drastic amplifying ultrasound echo signals los ua ib tug ci, txawv koob qhia txog kev yees duab. Tsib -axis synchronous tsab ntawv tsa suab ua kom muaj kev sib txuas txuas txuas ntxiv mus thoob plaws cylindrical qhov chaw rau cov khoom sib xws. Machining kam rau ua yog tuav nyob rau hauv ± 0.01 hli los lav batch{11}}rau-batch sib xws.

Laser etching tawm tom qab slag, oxide txheej thiab microcracks ntawm rab koob nto. Electropolishing leverages lub hauv paus ntsiab lus ntawm electrochemical anodic dissolution kom zoo dua tshem tawm qhov saum npoo asperities, txo qhov roughness ntawm Ra tsawg dua los yog sib npaug rau 0.2 μm.

Cov txheej txheem no tshem tawm cov ntsiab lus ntawm kev ntxhov siab los tiv thaiv kev qaug zog tawg, thaum tsim cov yeeb yaj kiab tuab tuab uas ua rau muaj txiaj ntsig zoo rau lub cev muaj zog corrosion. Raws li ASTM B912 thiab ASTM A967 cov qauv, post-electropolishing validation ntawm xiav chaw kuaj los yog ntsev tsuag tshuaj ntsuam xyuas cov passivation txheej txheem. Rau 304 thiab 316L stainless hlau qib, electropolishing kuj tshem tawm cov fabrication-induced ferrite cov kab mob thiab restores inherent corrosion kuj ntawm austenitic microstructures.

Lub lumen sab hauv ntawm rab koob ntsuas tsuas yog 0.86 hli hauv txoj kab uas hla, nkag tsis tau rau cov qauv txhuam hniav. Ultrasonic tu generates cavitation npuas nyob rau hauv cov kev daws teeb meem ntawm siab - zaus vibrations ntawm 20-40 kHz; implosion ntawm cov npuas no tso tawm haib shockwaves uas dislodge roj, machining khib nyiab thiab kab mob los ntawm ob sab hauv thiab sab koob nto.

Cov dej deionized sib xyaw nrog cov tshuaj alkaline lossis cov tshuaj tsis huv yog siv los ua qhov nruab nrab ntawm kev ntxuav, nrog ntau theem - tank theem rau kev ntxuav ntxhib, ntxuav zoo thiab yaug. Cov khoom xyaw ces qhuav nrog HEPA- lim cua kub thiab ntim rau hauv Chav Kawm 10000 chav huv. Tag nrho cov kev ua haujlwm ua raws li ISO 13485 qhov kev lees paub ntawm cov cuab yeej siv kho mob kom huv si, ua kom cov khoom tiav tsis muaj cov seem seem thiab cov phom sij.