Intracranial aneurysm yog ib qho chaw txawv txav ntawm cov hlab ntsha intracranial lumen, uas feem ntau tshwm sim hauv lub nplhaib hlab ntsha thiab nws cov ceg tseem ceeb ntawm lub hauv paus ntawm lub hlwb. Kev phais ncaj qha yog txoj hauv kev tseem ceeb rau kev kho mob intracranial aneurysms. Nrog rau kev txhim kho endovascular interventional kho nyob rau hauv xyoo tas los no, endovascular embolization tau dhau los ua txoj hauv kev tseem ceeb rau kev kho mob aneurysms. Microcatheter shaping yog ib qho ntawm cov txheej txheem yooj yim tshaj plaws rau intracranial aneurysm embolization thiab tseem yog lub hauv paus ntawm intracranial arterial embolization. Kev vam meej ntawm microcatheter shaping yog qhov tsim nyog yuav tsum tau ua ua ntej rau kev ua tiav aneurysm embolization.
Lub hauv paus ntsiab lus ntawm microcatheter shaping:
Lub hauv paus ntsiab lus yog tias cov polymer ntawm qhov kawg ntawm microcatheter dissolves thaum raug tshav kub thiab solidifies thaum raug txias. Cov yam ntxwv cuam tshuam rau microcatheter molding: shaping koob lub kaum ntse ntse, lub sijhawm fumigation, thiab hom catheter. Rov qab: rub tawm lub koob shaping thiab microcatheter yuav rov qab. Feem ntau lub kaum sab xis ntawm lub koob shaping thiab lub hom phiaj yog 2: 1. Lub passive shaping ntawm microcatheter cuam tshuam los ntawm coaxial microguidewire, ntshav kub, thiab qhov tseeb peb-dimensional zoo ntawm niam txiv cov hlab ntsha.
Lub hom phiaj tseem ceeb ntawm microcatheter shaping:
Kev xa tawm zoo: lub microcatheter yog ntuj tsim, muaj kev ua tau zoo, thiab tsis ua rau saum phab ntsa;
2. Kev txhawb nqa zoo: kev tsim kom muaj kev nkag tau zoo, lub microcatheter tus kheej txhawb zog, kev siv cov phab ntsa ntawm cov niam txiv cov hlab ntsha uas nyob ib sab, tsis txhob siv cov yas ntau dhau, thiab zam kev siv cov yas ntau zaus.
Kev cuam tshuam ntawm vascular yam ntawm microcatheter shaping:
Lub kaum sab xis ntawm qhov aneurysm thiab cov hlab ntsha niam txiv;
Kev cuam tshuam ntawm qhov khoov ntawm lub zeem muag ntawm lub caj dab qog ntawm lub microcatheter: kev sib raug zoo ntawm ob lub kaum sab xis thiab qhov kev ncua deb ntawm ob qhov khoov;
Lub morphology ntawm aneurysm nws tus kheej;
Seb puas siv cov cuab yeej pab xws li dual microcatheters.
Muaj ntau txoj hauv kev los tsim microcatheters:
Ib leeg-khoov shaping: Cov hlab ntsha ntawm niam txiv ze ze yog ntev thiab muaj qhov curvature maj mam. Lub aneurysm thiab niam txiv cov hlab ntsha yog nyob ntawm ib lub kaum ntse ntse. Lub dav hlau ntawm niam txiv cov hlab ntsha thiab lub dav hlau ntawm qhov aneurysm thiab niam txiv aneurysm nyob rau hauv tib lub dav hlau. Sab saum toj ntawm aneurysm ntsej muag rov qab thiab downward. Kev sib txuas cov hlab ntsha, nruab nrab cerebral hlab ntsha nrog aneurysm sab saum toj downward;
S-shaped khoov shaping: Lub kaum sab xis ntawm lub qog lub cev thiab cov hlab ntsha niam txiv yog qhov sib txawv ntawm qhov khoov ntawm cov hlab ntsha ntawm niam txiv, xws li cov hlab ntsha nruab nrab ntawm lub paj hlwb nrog cov qog lub cev taw rau sab saud;
Z-shaped thiab J-shaped khoov shaping: Z-puab yog qhov ua tau ib qho kev hloov pauv ntawm S-shaped khoov, tab sis qhov kev ncua deb ntawm ob qhov khoov yog luv dua piv rau S-khoov, xws li aneurysm thaum pib ntawm A1 ntu ntawm nruab nrab cerebral hlab ntsha;
Spiral shaping: Lub khoov ntawm lub caj dab aneurysm thiab khoov ntawm lub zeem muag yog nyob rau hauv tib txoj kev, tab sis lub kaum sab xis ntawm ob lub dav hlau khoov sib txawv, thiab qhov kev ncua deb ntawm ob qhov khoov yog luv heev, xws li lub hauv paus chiv keeb. superior hypophyseal hlab ntsha thiab cov hlab ntsha intrafossa;
Ob chav microcatheter, ib leeg khoov shaping.