Qhov zoo ntawm distal access catheters yog pom tseeb piv rau cov tsoos guiding catheters los yog intermediate catheters.
1. Superior proximal kev txhawb nqa
Qhov no yog tus nqi tseem ceeb ntawm distal access catheters. Lawv cov phab ntsa feem ntau siv cov txheej txheem ntau- txheej txheej (xws li braided hlau mesh), muab kev tiv thaiv zoo rau kev khoov thiab thrust kis, zoo tiv thaiv cov tshuaj tiv thaiv los ntawm vascular tortuosity, thiab muab qhov ruaj khov "fulcrum" rau cov txheej txheem distal.
2. Ua kom muaj peev xwm ncav tau
Ua tsaug rau lub tswv yim hloov tau yooj yim thiab muaj peev xwm taug qab tau zoo, cov khoom siv niaj hnub no tuaj yeem ncav cuag ntau qhov deb thiab tortuous intracranial hlab ntsha, xws li M1 / M2 ntu ntawm nruab nrab cerebral hlab ntsha. Qhov no txhais tau tias kev nkag mus rau kev phais luv dua, kev ua haujlwm ncaj qha, thiab ua haujlwm tau zoo dua.
3. Txhim kho kev phais kev nyab xeeb thiab ua tau zoo
- Lub Platform ruaj khov: txo qis cov twj tso kua mis intraoperative txav thiab txav chaw, txo qhov kev pheej hmoo ntawm vascular raug mob thiab perforation.
- Ntshav Flow Intervention thiab Thrombus Protection: Thaum lub sij hawm thrombectomy, lub distal catheter tip yog positioned ze rau lub thrombus mus rau ib ntus thaiv rau pem hauv ntej cov ntshav khiav, tiv thaiv thrombus rupture thiab khiav mus rau ntau tshaj cov hlab ntsha. Nws kuj tseem muab txoj hauv kev rau kev rov ua dua thiab kev ua haujlwm yam tsis muaj kev rov qab los ntawm qhov txhab.
- Txo Vasospasm: Qhov zoo tshaj plaws lub tswv yim tsim thiab yoog raws txo qhov khaus mus rau vascular intima.
Thaum xaiv ib tug distal access catheter, cov neeg tsav tsheb feem ntau tsom rau cov yam ntxwv hauv qab no:
1. Ntsis tsim: Ib lub taub mos mos (feem ntau nrog cov txheej hydrophilic) yog qhov tseem ceeb rau kev nyab xeeb ntawm cov hlab ntsha uas muaj tortuous.
2. Qhov sib npaug ntawm kev txhawb nqa thiab kev hloov pauv: Kev txhawb nqa txaus yog xav tau nyob ze, thaum qhov kev hloov pauv tau zoo yuav tsum tau distally rau navigate tortuous hlab ntsha; qhov no nthuav tawm qhov nyuaj thiab ua tib zoo tsim kev sib tw.
3. Lumen txoj kab uas hla thiab liner: Lub lumen loj dua tso cai rau kev nqus dej kom muaj zog thiab ua kom cov khoom siv loj dua. Lub liner du thiaj li muaj kev sib txhuam tsis kam thaum ntsuas ntsuas.
4. Kev tiv thaiv kev sib tsoo thiab kev taug qab: Cov txheej txheem ntau- cov txheej txheem ua kom lub lumen tsis tawg hauv cov hlab ntsha uas muaj zog thiab tso cai rau kev txhim kho txoj kev sib tw.