Embolectomy catheter to remove obstruction of other (eg, embolic debris thrombosis, thromboembolic, atherosclerotic plaque, such as foreign matter) and (10, 10 , 10 ", 10" or clot from a blood vessel, 10 "), rapid exchange microcatheter, systems and methods. When that caused the stroke of progress during, or the present invention is particularly effective in cerebral ischemia time, to be removed percutaneously obstructions or other thromboembolic from small blood vessels of the brain. In some embodiments, (10, 10 , 10 ", 10", 10 ") is embolectomy catheter of the present invention, the tail is inserted near the clot or clots inserted through pre- It is possible that the guide wire was with (GW), or to proceed down along on it. Furthermore, in some embodiments, embolectomy catheter of the present invention is provided with a clot removal device may be placed and spread from the catheter after advancing through the clot at least partially the catheter. Clot removal device may comprise a (14) nested wire may be placed on the spread is designed to block the passage of blood clots. Well, the delivery catheter is radially constrained by the outer tube clot removal device provided with an inner and outer tubes of the telescopic. If you remove the restraint of clot removal device on Retract the outer tube, clot removal device spread extended placement shape. Injection guide wire is particularly useful when combined with embolectomy catheter, to allow the injection of fluid or visualization agents to the tip side of the clot.血管から血餅又は他の閉塞物(例えば、血栓、血栓塞栓、アテローム硬化性プラークの塞栓破片、異物など)を除去するための塞栓摘出用カテーテル(10、10’、10”、10”’、10””)、迅速交換マイクロカテーテル、システム及び方法。本発明は、進展中の卒中を起こしたとき、又は脳虚血時に、脳の小血管から血栓塞栓又は他の閉塞物を経皮的に除去するのに特に有効である。いくつかの実施形態において、本発明の塞栓摘出用カテーテル(10、10’、10”、10”’、10””)は、予め血餅を挿し通すか又は血餅の近くに挿入しておいたガイドワイヤ(GW)と共に、又はその上を伝って進めることができる。さらに、いくつかの実施形態において、本発明の塞栓摘出用カテーテルは、カテーテルを少なくとも部分的に血餅に通して進めた後でカテーテルから広げて配置し得る血餅除去装置を備えている。血餅除去装置は、血餅の通過を阻止するように設計され広げて配置し得るワイヤネスト(14)を備えていてよい。デリバリーカテーテルは、伸縮自在の内管と外管を備えていてよく
