Thermal detachment system for implantable devices

摘要

The present invention provides for implant device delivery apparatuses and related methods of use. The delivery systems of the present invention incorporate a stretch resistant tube that advantageously makes the implant device, such as an embolic coil, stretch resistant while a delivery system is being used to position the implant device at a desired target site.

主权项

1. An implant device delivery system comprising:
a delivery pusher having a proximal end and a distal end; an electrically activated implant release member; a pre-tensioned tether associated with the implant release member such that said tether is broken by the implant release member when energized; a conductive core member having an externally exposed portion at said proximal end for connection to a power source; an insulating layer disposed on at least a portion of said conductive core member near said proximal end; and, a conductive layer disposed on at least a portion of said insulating layer, and having an externally exposed surface for connection to the power source; wherein said conductive layer and said conductive core conduct an electrical current from said proximal end of said delivery pusher to said electrically activated implant release member; wherein tension in the tether increases the rate at which the tether is broken once a circuit is closed between said externally exposed portion of said conductive core member and said externally exposed surface of said conductive layer.