Kev piav qhia ntxaws ntxaws ntawm nyias -Kev kos duab phab ntsa, Obturator sib tsoo, thiab cov txheej txheem electropolishing rau Laparoscopic Cannulas
Jul 01, 2026
https://www.laparoscopyhospital.com/v5.htm
A laparoscopic cannulib tug zoo nkaus li tsuas yog ib tug perforated hlau raj, tab sis nws raug teeb meem nyob deb tshaj qhov zoo tib yam puncture koob los yog catheters. Nws cov kev sib tw tseem ceeb yog nyob rau hauv qhov sib piv siab heev (ntev - rau - txoj kab uas hla feem ntau tshaj 150: 1), daim iav- qhov xav tau ntawm lumen du (kom tiv thaiv kev ntsuas ntsuas thaum lub sij hawm ntxig / rho tawm), thiab nruj heev sab nraud txoj kab uas hla (yuav tsum tau zoo meej haum nrog seals). Cov kev qhia tshwj xeeb muaj xws li sab nraud txoj kab uas hla ntawm 5 hli, 10 hli, thiab 12 hli, nrog nyias- cov qauv phab ntsa uas muaj cov phab ntsa tuab ntawm 0.15-0.30 hli, thiab qhov ntev li ntawm 70 hli mus rau 150 hli.
Tag nrho cov txheej txheem tsim khoom pib nrog qhov kev npaj ua tiav ntawm cov raj blanks. Cov neeg tsim khoom yuav tsum xaiv kev kho mob -qib 304, 316L stainless hlau, lossis titanium alloy bar Tshuag. Rau nyias-walled cannulas, cov tshuab tsis muaj qhov nruab nrab feem ntau yog siv los ua ntej txo cov kab sab nraud kom ze rau qhov loj me, ua raws li kev kos duab los ntawm ntau yam khaub thuas- kos duab tuag kom ua tiav lub hom phiaj sab nrauv thiab sab hauv. Thaum lub sij hawm tus txheej txheem no, phab ntsa thickness kam rau ua yuav tsum tau tswj nyob rau hauv ± 0.01 hli, thaum ncaj yuav tsum tau siab heev (bending yuav tsum tsis pub tshaj 0.1 hli ib 100 hli ntev). Tsis zoo ncaj ncees ua rau cov cannula deflect thaum lub sij hawm puncture, ua rau cov ntaub so ntswg puas txaus ntshai thiab ua rau tsis sib xws thaum lub sij hawm inserting cov cuab yeej.
Tom ntej no yog obturator sib sau thiab sib dhos. Rau detachable obturators (xws li pyramidal los yog blunt conical), CNC lathes thiab 5-axis grinders yuav tsum tau rau precision machining kom paub meej symmetrical geometry thiab tsim nyog tip sharpness. Kev sib txuas ntawm obturator thiab cannula lub cev feem ntau yog brazed lossis laser welded. Tom qab vuam, kev kuaj helium yuav tsum tau ua kom paub tseeb tias tsis muaj micro- qhov khoob ntawm cov seams-vim thaum lub sij hawm phais, yog cov ntshav los yog cov kua dej nkag mus rau hauv lub interlayer, nws tsis yog yooj yim los ntxuav, tab sis kuj tseem tuaj yeem dhau los ua qhov chaw yug kab mob.
Kev kho deg yog tus yuam sij rau kev xav tactile. Ob qho tib si sab hauv thiab sab nrauv ntawm lub cannula yuav tsum tau siv electropolishing kom txo qhov roughness (Ra) qis dua 0.2 μm. Tshwj xeeb tshaj yog rau lub lumen sab hauv, qhov ze ntawm - daim iav tiav yuav tsum ua kom tiav kom cov kws phais neeg ua haujlwm zoo, tsis muaj zog thaum sib pauv cov cuab yeej xws li electrocautery hooks thiab grasping forceps, zam kev ua haujlwm qeeb los ntawm kev sib txhuam. Sab nrauv tuaj yeem ua sandblasted rau matte tiav (txo kev phais lub teeb ci ntsa iab) lossis ua kom ci, nyob ntawm qhov yuav tsum tau ua.
Cov theem kawg tswj kev ua tau zoo yog nruj heev. Ntxiv rau qhov niaj hnub AOI (Automated Optical Inspection) tshawb xyuas obturator symmetry thiab CMM (Coordinate Measuring Machine) ntsuas qhov ntev, torque testing (bending zog ntau dua los yog sib npaug li 5 N·m tsis tawg) thiab simulated puncture xeem kuj yuav tsum tau. Tsuas yog laparoscopic cannula manufacturers muaj peev xwm ntawm nws tus kheej tswj tag nrho cov txheej txheem saw ntawm "nyias- phab ntsa teeb duab → precision vuam → electropolishing" muaj qhov sib tw tseem ceeb; cov chaw tsim khoom uas tsuas yog outsource semi-cov khoom tiav rau kev sib dhos yooj yim feem ntau tsis tuaj yeem tswj cov phab ntsa sab hauv smoothness thiab obturator haum-qhov no yog cov kab sib faib tseem ceeb uas siab -kawg OEM hom muaj nqis tshaj thaum xaiv cov neeg muag khoom.
