Patent ID: 8876855

Claim:
An implant delivery system comprising: a delivery pusher; an implant device detachably connected to the delivery pusher by a tether having a distal end connected to a proximal end of the implant device, wherein the tether is substantially non-tensioned when connecting the implant device to the delivery pusher; and an electrical heating element comprising: an electric coil arranged coaxially around at least a portion of the tether and having a heat-generating zone, the coil being operable to achieve a temperature in the heat-generating zone that is sufficient to sever the tether, the electric coil comprising a first plurality of windings having a first pitch and a second plurality of windings having a second pitch that is greater than the first pitch; wherein the first plurality of windings are in a first winding zone, and the second plurality of windings are in a second winding zone located distally from the first winding zone.