Delivery wire assembly for occlusive device delivery system

摘要

A delivery wire assembly for delivering an occlusive device to a location in a patient's vasculature, includes delivery wire conduit defining a conduit lumen, a core wire disposed in the conduit lumen, the core wire having a distal detachment zone, and an enhancing coil disposed around the distal detachment zone, the enhancing coil configured to transfer a distally directed force from the delivery wire assembly to objects located distal of the delivery wire assembly without damaging the distal detachment zone. In one embodiment, the enhancing coil includes a proximal section having a first diameter, a distal section having a diameter larger than the diameter of the proximal section, and a transition section connecting the respective proximal and distal sections, wherein the transition section flares radially in a distal direction.

主权项

1. A delivery wire assembly for delivering an occlusive device to a location in a patient's vasculature, comprising:
a delivery wire conduit defining a conduit lumen; a core wire disposed in the conduit lumen, the core wire having a distal detachment zone; and an enhancing coil disposed around the distal detachment zone, the enhancing coil comprising
a proximal section having a first diameter, the proximal section being secured by an adhesive to an inner surface of the conduit lumen and to the core wire, thereby forming a watertight seal,a distal section having a diameter larger than the diameter of the proximal section, anda transition section connecting the respective proximal and distal sections, wherein the transition section flares radially in a distal direction, wherein the enhancing coil is configured to transfer a distally directed force from the delivery wire assembly to objects located distal of the delivery wire assembly without damaging the distal detachment zone.