Detachable pusher-vasoocclusive coil assembly with interlocking ball and keyway coupling

Abstract

Abstract A pusher-vasoocclusive coil assembly (11) that is advanced through a catheter (21) to a site within a vessel and is manipulated to detach the coil (13) from the assembly. The coil has an enlarged member (16) at its proximal end and the pusher (12) has a keyway (20) at its distal end that receives the enlarged member in interlocking engagement. The pusher and coil are coupled by placing the enlarged member in the keyway and enclosing the coupled assembly with a coaxial sleeve (14). The coil-pusher-sleeve assembly is positioned at the site and the sleeve is retracted to allow the member to move out of the keyway to uncouple the pusher and coil.

Inventors

• 👤 Erik T. Engelson

Bibliographic Details