Aspiration or occlusion to prevent proximal migration of injected embolic solution during endovascular embolization treatment in a vessel

Abstract

Method for embolization treatment at a target site within a vessel using an endovascular embolization system. A microcatheter is navigated to the target site in the vessel. Via the microcatheter, only embolic solution is injected into the vessel. Aspirated fluid representing only a portion of the injected embolic solution present in the vessel is aspirated into the microcatheter to prevent the injected embolic solution present in the vessel from proximally migrating in the vessel. Alternatively, the injected embolic solution is prevented from proximal migration by occluding the vessel with the distal end of the microcatheter.

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