DELIVERY WIRE FOR OCCLUSIVE DEVICE DELIVERY SYSTEM

摘要

A delivery wire assembly for delivery of an occlusive device to a location in a patient's vasculature includes a delivery wire conduit having a proximal tubular portion connected to a distal coil portion, and a conduit lumen extending through the proximal tubular portion and the distal coil portion. The delivery wire assembly also includes a core wire disposed in the conduit lumen and having a distal end coupled to an occlusive device. The distal coil portion of the delivery wire assembly includes a plurality of zones and the plurality of zones decrease in stiffness distally along the length of the distal coil portion of the delivery wire assembly.

主权项

1. A delivery wire assembly for delivery of an occlusive device to a vascular implantation location, comprising:
a delivery wire conduit having a proximal tubular portion connected to a distal coil portion, and a conduit lumen extending through the respective proximal tubular portion and distal coil portion; a core wire extending into in the conduit lumen, the core wire being permanently fixed to the delivery wire conduit so that the core wire and the delivery wire conduit are not longitudinally movable relative to each other; and an occlusive device coupled to a distal end of the core wire, wherein the distal coil portion comprises a proximal zone including one or more proximal zone windings formed from a proximal zone laminated coil wire having a proximal zone lamination thickness, and a distal zone including one or more distal zone windings formed from a distal zone laminated coil wire having a distal zone lamination thickness less than the proximal zone lamination thickness.