Neurovascular interventional catheter:
I. Cov ntaub ntawv xav tau
1. Zoo biocompatibility, tshwj xeeb tshaj yog cov ntshav compatibility, thiab tsis muaj tshuaj lom yuav tsum tsiv los yog permeate nyob rau hauv lub cev.
2. Kev ua tau zoo, muaj peev xwm txav tau zoo nyob rau hauv cov kab noj hniav ntawm tib neeg lub cev xws li cov hlab ntsha, thiab tseem yuav tsum tau cov khoom siv catheter kom muaj cov roj ntsha zoo los txo qhov kev puas tsuaj rau phab ntsa vascular los ntawm kev txav ntawm cov khoom catheter hauv cov hlab ntsha los yog lwm yam kab noj hniav ntawm tib neeg lub cev.
3. Muaj peev xwm kis tau tus catheter torque zoo, uas yog conducive mus rau txoj kev ntawm catheters nyob rau hauv natural channels.
4. Muaj qee qhov kev tiv thaiv siab thiab tuaj yeem hloov mus rau cov ntawv thov hauv ib puag ncig sib txawv.
II. Qauv
1. Lubricated hauv ob sab phlu
Ua ntej, lub lubricated hauv ob sab phlu yog muab tso rau ntawm ib tug nyuaj core. Cov yam ntxwv xav tau ntawm cov tub ntxhais lubricated muaj xws li lubricity siab, ultra-thin qauv thiab durability kom tsis txhob muaj kev puas tsuaj thaum lub sij hawm xa khoom.
2. Txhawb nqa pob txha
Piv nrog rau ib qho kev xaiv ib leeg, cov pob txha txhawb nqa muaj ntau txoj kev xaiv ntawm hom, qauv, khoom siv thiab kev ua haujlwm. Feem ntau, cov hlau yog siv rau hauv ob sab hauv daim ntawv coils lossis braids los yog ob qho tib si, thiab cov xov hlau no tuaj yeem yog puag ncig lossis tiaj tus.
3. Polymer txheej txheej
Tom qab ntxiv cov khoom siv ntxiv, cov khoom siv polymer sheath muab tso rau ntawm lub catheter ncej. Cov khoom siv polymer no muaj cov khoom siv hluav taws xob radiopaque los ua kom nws cov khoom siv hluav taws xob ntau ntxiv.
4. Hydrophilic txheej
Cov kauj ruam kawg yog los npog lub catheter nrog polyurethane-based hydrophilic txheej tov. Cov txheej hydrophilic sai sai ua ke nrog dej thaum nws los rau hauv kev sib cuag nrog nws, tsim ib txheej hydration, ua rau saum npoo heev lubricated, zoo heev txo cov kev sib txhuam ntawm cov cuab yeej thiab tib neeg cov ntaub so ntswg, thaum zoo heev txhim kho qhov yooj yim ntawm tus kws kho mob ua hauj lwm thiab cov neeg mob kev nplij siab, thiab tsis txhob muaj teeb meem xws li kev sib txhuam kev puas tsuaj thiab kev kis kab mob.
Microcatheter:
Microcatheter yog hais txog lub catheter reinforced nrog ib txoj kab uas hla me me. Tsis muaj lub ntsiab lus nruj me ntsis, tab sis feem ntau hu rau ib lub catheter me me nrog txoj kab uas hla ntawm 0.70-1.30 hli microcatheter. Nws yog siv rau kev txhawb nqa / kev sib pauv, dhau los ntawm cov kab mob, xa cov tshuaj embolic, stents, thiab lwm yam.
Vim nws cov qauv me me, nws yog qhov tsim nyog rau "navigation thiab shuttle" nyob rau hauv tib neeg cov hlab ntsha, yog li nws yog siv los ntawm ntau thiab ntau tus kws kho mob nyob rau hauv minimally invasive interventional phais.
Feem ntau cov microcatheters yog tsim los nrog cov txheej txheem lubricating, lub hau muag (los yog angled) thiab cov txheej txheem nruab nrab. Ntawm lawv, cov txheej txheem kev txhawb nqa nruab nrab yuav muaj kev cuam tshuam loj rau kev ua haujlwm ntawm microcatheter ntawm kev tsim thiab kev tsim khoom. Cov txheej txheem nruab nrab ntawm cov txheej txheem yog ib txoj kev tsim uas siv cov hlau xaim kom muaj zog thiab thawb lub zog ntawm lub catheter los ntawm braiding lossis winding. Ntawm ntau lub microcatheters, txoj kev braiding lossis winding no feem ntau muab faib ua plaub hom: braiding, winding, braiding + winding (parallel) thiab braiding hla winding (ntau txheej). Kev xaiv ntawm plaub txoj kev sawv cev rau cov kev xav tau ntawm cov kab mob vascular sib txawv rau kev ua haujlwm tseem ceeb ntawm microcatheter. Piv txwv li, kev tsim ntawm braiding + winding muaj qhov zoo sib xws braiding thiab zoo distal winding softness, uas yog ib qho kev xaiv zoo heev rau kev xa cov paj hlwb. Rau CTO lesions, high-hardness braiding tuaj yeem pab nws dhau los ntawm calcification. Ntawm lawv, los ntawm kev kho qhov ceev thiab suab ntawm braiding los yog winding, nws lub laub thiab yoog raws tuaj yeem hloov pauv raws li.
Nrog nws lub cev me me, microcatheters tau siv rau hauv cov hlab ntsha coronary, peripheral hlab ntsha, paj hlwb thiab ntau lwm yam. Nrog rau kev nce qib ntxiv ntawm cov ntaub ntawv kho mob science, microcatheters nrog kev ua tau zoo yuav txuas ntxiv tuaj thiab dhau los ua riam phom tseem ceeb rau cov kws kho mob kom tshem tawm cov kab mob.