ENTNAHMEVORRICHTUNG FÜR EMBOLIESPIRALFEDERN

摘要

A device or retrieving embolic coils used for treating an aneurysm of a patient has a flexible distal portion comprising distal collapsible arms with a latch member carried by one of the arms. The wire device, distal end first, is introduced into a microcatheter causing the arms to collapse. The microcatheter is used to deliver the device through a patient's blood vessel to the aneurysm. The distal end of the wire device is then extended beyond the end of the microcatheter allowing the arms to open when they extend out of the distal end of the microcatheter. The latch member is manipulated so that it engages an embolic coil to be retrieved. The latch-engaged embolic coil and wire device are withdrawn through the catheter, whereby the arms become collapsed as the arm is withdrawn through the catheter, securing the latch and the embolic coil.