Keeb Kwm Evolution Thiab Kev Tsim Kho Niaj Hnub No Ntawm Tuohy Epidural Needle

https://en.wikipedia.org/wiki/Tuohy_needle

CovTus kab mob epidural​stands raws li ib qho ntawm feem iconic instruments nyob rau hauv tshuaj loog thiab kev tswj qhov mob, nws invention fundamentally hloov lub paradigm ntawm nruam epidural tshuaj loog. Rov qab mus rau xyoo 1944, Dr. Edward Tuohy ntawm Tebchaws Meskas tau tsim thawj lub hollow - tho puncture koob featuring ib tug me ntsis nkhaus (Curved Tip / Huber Point). Lub ntsiab lus tseem ceeb tom qab tsim qauv no yog siv qhov curvature ntawm lub taub los coj lub catheter tom qab tawm ntawm rab koob, es tsis pub nws nkag mus rau dura mater vertically. Qhov no txo ​​qis qhov txaus ntshai ntawm cov kua cerebrospinal to thiab tom qab- mob taub hau. Cov koob Tuohy thaum ntxov yog feem ntau txhais tes- hauv av los ntawm cov hlau zoo tib yam uas tsis muaj kev sib koom ua ke. Txawm li cas los xij, nrog kev nce qib hauv niaj hnub precision manufacturing, niaj hnub noTus kab mob epidural​ tau hloov zuj zus mus rau hauv siab -cov cuab yeej kho mob muaj tseeb ua ke nrog cov ntaub ntawv tshawb fawb, dej dynamics, thiab ergonomics.

Peb cov txheej txheem tsim khoom pib nrog kev xaiv nruj heev ntawm cov khoom siv raw. Peb muab qhov tseem ceeb tshaj plaws -qib stainless hlau capillary raj- tshwj xeeb Stainless Hlau 304 thiab Stainless Steel 316-raws li peb cov ntaub ntawv hauv paus. Cov alloys tau dhau los ua cov qauv kev lag luam kub vim lawv qhov tshwj xeeb corrosion tsis kam thiab biocompatibility. Qib 316 stainless hlau, txhim kho nrog molybdenum, ua kom pom kev ua tau zoo dua tiv thaiv cov kua qaub thiab lub cev muaj zog corrosion, uas yog ib qho tseem ceeb rau cov khoom siv cuam tshuam uas xav tau kev sib cuag ntev. Peb ua raws li kev tswj xyuas kom zoo traceability, kom ntseeg tau tias txhua batch ntawm tubing tuaj nrog cov ntaub ntawv txheeb xyuas cov tshuaj muaj pes tsawg leeg txhawm rau tshem tawm cytotoxicity txaus ntshai los ntawm cov kab mob ntau dhau.

Niaj hnubTus kab mob epiduralntau lawm transcends yooj yim machining; Nws suav nrog kev kaw- lub voj kaw uas suav nrog kev kos duab txias, kev txiav laser txiav, electropolishing, thiab lub ntsej muag sib tsoo. Lub hom phiaj tiv thaiv -coring tip yuav tsum tau siv cov microscopic tswj lub sib tsoo lub kaum sab xis (feem ntau yog 15℃-30 degree) kom paub meej qhov txawv "tsis muaj zog" thaum nkag mus rau ligamentum flavum thaum tiv thaiv cov ntaub so ntswg coring uas tuaj yeem cuam tshuam lub lumen. Peb cov kab ntau lawm ua ke nrog cov tshuab kho qhov muag tsis siv neeg soj ntsuam xyuas cov ntsiab lus micron-theem xws li cov lus qhia burrs, concentricity, thiab sab hauv ntug sharpness, kom ua raws li cov qauv kev lag luam uas yuav tsum tau muaj xws li YY / T 0321.2.

Tsis tas li ntawd, evolution ntawm cov niaj hnubTus kab mob epiduralyog pom tseeb nyob rau hauv nws cov txheej txheem kho deg. Los ntawm liab qab hlau tiav mus rau daim iav polishing los yog matte sandblasting, tswj nto roughness (Ra tsawg dua los yog sib npaug rau 0.25μm) ncaj qha cuam tshuam rau kev tiv thaiv. Peb cov haujlwm tau ua nyob rau hauv Chav Kawm 100,000 qhov chaw huv huv, ua ke nrog ISO 13485 Cov Txheej Txheem Kev Tswj Xyuas Zoo, ua kom txhua theem -los ntawm cov khoom siv raw mus rau qhov kawg ntim - yog tswj nruj heev. Qhov kev nrhiav tsis tu ncua ntawm kev tsim khoom zoo no ua rau Dr. Tuohy lub zeem muag qub thiab ua lub hauv paus tseem ceeb rau kev nyab xeeb tshuaj loog tam sim no. Raws li minimally invasive tswvyim nce traction, yav tom ntejCov koob tshuaj epidural​ yuav txuas ntxiv mus ntxiv rau hauv cov khoom siv hnyav thiab cov qauv tsim biomimetic, tseem lawv lub luag haujlwm tseem ceeb - kom muaj kev nyab xeeb thiab raug tsim kom muaj kev nkag mus rau kev tswj qhov mob - tseem tsis hloov pauv.