1. Qhov chaw nyab xeeb thiab ua tau zoo ntawm microcatheter yog thawj yam mob rau embolization ntawm AVM. Txhawm rau kom raug thiab xaiv xa cov microcatheter mus rau hauv cov ntshav cov hlab ntsha mus rau lub cev tsis zoo, ob lub thev naus laus zis tuaj yeem siv tau: 1. Kev taw qhia ntshav ntws; 2. Micro guidewire kev taw qhia tshuab.
2. Cov kev taw qhia ntawm cov ntshav ntws: Nws yog tsim rau cov dej ntws ncaj qha microcatheter kom nyob rau hauv qhov chaw, thiab cov hlab ntsha ntawm cov hlab ntsha yog siv los thawb cov mos mos microcatheter taub hau raws txoj hlab ntsha thiab los ntawm cov hlab ntshav mus txog qhov malformation vascular loj lossis lub hom phiaj txoj hauj lwm. Thaum lub sij hawm kev nce qib ntawm microcatheter, cov kev taw qhia ntawm lub taub hau ntawm microcatheter tuaj yeem hloov pauv los ntawm kev txhaj tshuaj zoo ib yam lossis saline kom nkag mus rau hauv cov hlab ntsha.
3. Micro guidewire guidance technology: Siv qhov sib txuam micro guidewire coj lub microcatheter rau pem hauv ntej, thiab tib lub sij hawm nce lub zog txhawb nqa ntawm microcatheter coj lub microcatheter mus rau lub hom phiaj. Thaum lub sij hawm cov txheej txheem qhia micro guidewire, kev ua haujlwm maj mam yuav tsum tau tiv thaiv cov micro guidewire los ntawm kev sib tsoo cov hlab ntsha.
Nyob rau hauv luv luv, raws li AVM embolization kev kho mob lub tswv yim thiab txoj kev hlab ntsha, koj muaj peev xwm xaiv ib tug floating microcatheter los yog micro-guidewire coj microcatheter uas yog sib xws nrog cov saum toj no ob technologies. Tom qab lub microcatheter nyob rau hauv qhov chaw, nws yog ib qho tsim nyog yuav tsum tau rov ua ntau lub kaum sab xis super-xaiv angiography kom tsis txhob embolizing cov hlab ntsha li qub kom ntau li ntau tau.
Cov kauj ruam ua haujlwm thiab cov ntsiab lus siv rau kev siv kua embolic tus neeg sawv cev
1. Zoo li lwm cov kua nplaum embolization, tag nrho cov txheej txheem embolization yuav tsum tau ua ntej los ntawm super-xaiv angiography kom ua tib zoo txheeb xyuas AVM vascular qauv thiab cov yam ntxwv hemodynamic.
2. Kev xaiv ntawm embolization muab cov hlab ntsha: Xaiv txoj kev cov hlab ntsha raws li tus kheej lub tswv yim ntawm intravascular interventional kho. Feem ntau hais lus, ntau yam embolization cov ntaub ntawv yog thawj zaug siv los tshem tawm cov kev pheej hmoo xws li los ntshav lossis dej ntws siab; Thaum tsis muaj cov qauv txaus ntshai, cov ntshav tseem ceeb ntawm cov hlab ntsha raug xaiv rau embolization.
3. Txoj hauj lwm ntawm microcatheter: Lub microcatheter yuav tsum nkag mus rau hauv tab sis tsis nkag mus rau hauv cov hlab ntsha txawv txav kom deb li deb tau. Yog hais tias nws nyob deb ntawm qhov txawv txav ntawm cov hlab ntsha loj, nws yuav tsis muaj peev xwm mus embolize cov ntshav hlab ntsha loj txaus siab, thiab nws yog ib qho yooj yim rau embolize cov hlab ntsha ib txwm arterial ceg. Yog hais tias nws tob heev, nws yog ib qho yooj yim uas yuav ua rau cov kua dej vein yuav embolized ntxov ntxov.
4. Xaiv lub kaum sab xis ua haujlwm zoo: Thaum lub sijhawm txhaj tshuaj, nws yuav tsum ua kom pom txoj haujlwm ntawm microcatheter lub taub hau kawg kom meej, txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm microcatheter. Thiab tuaj yeem soj ntsuam qhov sib txawv ntawm cov kua nplaum los tiv thaiv cov hlab ntsha tseem ceeb ntawm kev ua yuam kev embolized.
5. Xaiv cov duab superselective angiography uas tsim nyog raws li intraoperative embolization siv: Cov duab siv yuav tsum suav nrog cov hlab ntsha noj, cov hlab ntsha txawv txav thiab cov hlab ntsha loj hauv cheeb tsam.
6. Cov kev xav tau rau kev txhaj tshuaj nrawm: Thaum txhaj tshuaj nplaum pib hloov DMSO, nws raug nquahu kom txhaj maj mam txhawm rau txhawm rau tiv thaiv kev txhaj tshuaj sai ntawm DMSO los ntawm kev hloov pauv hauv lub plawv dhia. Thaum cov kua embolic tus neeg sawv cev diffuses mus rau hauv lub vascular loj, qhov ceev ntawm cov kua embolic tus neeg sawv cev txhaj tshuaj yog tswj raws li cov xaiv microcatheter, vascular txoj kab uas hla, hemodynamics thiab diffusion ntawm kua nplaum. Tshwj xeeb tshaj yog thaum diffusing nyob rau hauv cov hlab ntsha me, lub laub txhaj ceev yuav tsum tau qeeb.
7. Embolzation thiab thawb txoj kev txhaj tshuaj: Thaum txhaj cov kua embolic tus neeg sawv cev, nws yuav tsum tsim kom muaj "thaiv" nyob ib ncig ntawm lub catheter tip kom "thaiv cov ntshav ntws" kom cov kua embolic agent.tuaj yeem diffuse rau pem hauv ntej. Siv cov txheej txheem "tos" los ua kom muaj kev hloov pauv siab tuaj yeem pab txhim kho kev nkag mus ntawm cov kua embolic.
8. Lub sijhawm tos thiab siab thaum rov txhaj tshuaj: Nws feem ntau ntseeg tau tias "lub sijhawm tos" tsawg dua 2 feeb los tiv thaiv cov kua embolic tus neeg sawv cev los ntawm precipitating hauv microcatheter vim tos ntev dhau lawm, ua rau txhaws.
9. Kev tshem tawm microcatheter: Muaj ob txoj hauv kev rau kev tshem tawm microcatheter. Ib qho yog tshem tawm sai, uas siv lub viav vias nrawm ntawm lub dab teg kom thim lub microcatheter. Cov txheej txheem no tsis tshua muaj siv thiab tuaj yeem ua rau cov hlab ntsha me me los tsim kua muag thiab los ntshav. Lwm qhov yog kev tshem tawm qeeb, uas yog cov kev siv feem ntau ntawm kev tshem tawm. Tom qab tso qhov nro ntawm lub microcatheter, lub micro catheter yog tshem tawm thiab qhov nro yog khaws cia. Tom qab ib ntus tos, lub microcatheter txuas ntxiv tau muab tshem tawm (feem ntau hauv centimeters) kom txog thaum lub microcatheter rub tawm. Thaum qhov nro loj los yog cov hlab ntsha hloov pauv tau pom tseeb, lub catheter yuav tsum tsis txhob rub tawm kom tsis txhob muaj teeb meem los ntshav. Thaum tshem tawm yog qhov nyuaj, koj tuaj yeem sim thim lub microcatheter lossis txhaj me me ntawm DMSO hnyav kom dilute EVOH ntawm qhov kawg ntawm microcatheter.