Vaso-occlusive device delivery system

摘要

A vaso-occlusive delivery system includes a vaso-occlusive coil, delivery wire assembly, and a link. The vaso-occlusive coil defines a coil lumen and has first and second coil windings defining a coil opening therebetween. The delivery wire assembly defines a delivery wire lumen, and includes an electrolytic detachment zone, a delivery wire conduit, and a delivery wire attached to the delivery wire conduit and extending through the delivery wire lumen distal of the delivery wire conduit. The link defines a link lumen and has link body including a proximal end of the link body defines an link opening in communication with the link lumen and a distal end of the link body includes a link detent extending radially from the link body, through the coil opening, securing the link body and the delivery wire assembly to the vaso-occlusive coil.

主权项

1. A vaso-occlusive coil delivery assembly, comprising:
a pusher assembly defining a longitudinal axis; an elongate tubular member having a proximal end portion attached to a distal end of the pusher assembly, the tubular member being aligned with the longitudinal axis of the pusher assembly and having a tubular member wall; a vaso-occlusive coil defining an axial lumen and having first and second vaso-occlusive coil windings in a proximal end portion thereof, the first and second windings defining a vaso-occlusive coil opening therebetween, wherein a distal end portion of the tubular member wall extends into the axial lumen of the vaso-occlusive coil; and a locking pin extending through the vaso-occlusive coil opening and through the distal end portion of the tubular member wall disposed in the axial lumen of the vaso-occlusive coil, thereby locking the tubular member to the vaso-occlusive coil, wherein a central portion of the tubular member proximal of the locking pin is configured to be selectively severed from the proximal portion, so as to detach the vaso-occlusive coil from the pusher assembly.