Implant delivery device
A system for delivering an implant within a patient is described. The activation of the heater coil causes the degradation, melting or reduction of a component that brings the heater coil into or out of electrical contact with another component, or causes the individual loops of the coil to contact each other, thereby resulting a notable change in resistance in the circuit supplying the heater coil with electricity. A core wire terminates prior to the distal end of the device, allowing for greater flexibility.
1. A delivery device comprising:
an elongated tubular member;
an implant retention mechanism located within said tubular member and releasably securing an implant at a distal end of said tubular member;
a core wire for strengthening said elongated tubular member; said core wire at least partially located within said tubular member; said core wire having a distal end terminating between about 2 cm and about 4 cm from said distal end of said tubular member;
a support coil located between a proximal end of a heater coil and a distal end of said core wire;
a non-insulated wire electrically connected to said core wire at a first and second location, and further connected to said heater coil.
2. The delivery device of claim 1 , wherein said distal end of said core wire terminates at about 3 cm from said distal end of said tubular member.
3. The delivery device of claim 1 , further comprising an electrical connector located at a proximal end of said device and said heater coil located within said distal end of said tubular member.
4. The delivery device of claim 3 , wherein said heater coil is spaced apart from said core wire.
5. The delivery device of claim 1 , further comprising an insulated wire connected to said electrical connector and said heater coil.
6. The delivery device of claim 1 , wherein said non-insulated wire is electrically connected near a proximal end of said core wire and near a distal end of said core wire.
7. The delivery device of claim 1 , wherein said support coil further comprises a first coil region having a first coil density and a second coil region having a second coil density, said second coil density being less than said first coil density.
8. A delivery device comprising:
an elongated tubular member;
an implant releasably connected to a distal end of said delivery device;
a heater coil located at said distal end of said delivery device;
a core wire at least partially fixed within said tubular member for providing support; said core wire having a distal end terminating between about 2 cm and 4 cm from said distal end of said delivery device; and,
a support coil located between said distal end of said core wire and a proximal end of said heater coil;
a bare wire connected to and in electrical communication with said core wire at both a first location and at a second location; said bare wire further connected to and in electrical communication with said heater coil.
9. The delivery device of claim 8 , wherein said support coil further comprises a densely-coiled region a spread-apart coil region.
10. The delivery device of claim 9 , further comprising an insulated wire in electrical communication with a heater coil at a distal end of said delivery device.
11. The delivery device of claim 10 , wherein said bare wire comprises about 99.99% silver and has a diameter of about 0.002 inches.
12. The delivery device of claim 10 , wherein said insulated wire is in electrical communication with a conductive band located near a proximal end of said delivery device.
13. A delivery device comprising:
an implant retention mechanism located near a distal end of said delivery device for selectively releasing an implant;
a core wire at least partially located within an elongated tubular member of said delivery device for providing resistance to bending; said core wire having a distal end terminating between about 2 cm and 4 cm from said distal end of said delivery device; and,
a support coil connected to a distal end of said core wire and extending to said distal end of said distal end of said delivery device;
an insulated wire and a bare wire arranged to selectively supply electricity to a heater coil of said implant retention mechanism;
wherein said bare wire is electrically connected to said core wire at a first and second location.
14. The delivery device of claim 13 , further comprising a tether fixed to said core wire and positioned through said heater coil to retain an implant.
15. The delivery device of claim 13 , wherein said distal end of said core wire terminates at about 3 cm from said distal end of said delivery device.
16. A delivery device comprising:
an elongated tubular member;
an implant retention mechanism located within said tubular member and releasably securing an implant at a distal end of said tubular member;
a core wire for strengthening said elongated tubular member; said core wire at least partially located within said tubular member; said core wire having a distal end terminating between about 2 cm and about 4 cm from said distal end of said tubular member;
a non-insulated wire electrically connected to said core wire at a first and second location, and further connected to a heater coil.