Deeply embedded helical coil extraction device

A method for extracting a deeply embedded helical coil, the method comprising:

• inserting a blade into a mounting hole to engage the deeply embedded helical coil free of contact with a side of the mounting hole, the blade comprising a first portion and second portion and wherein the second portion of the blade is inserted into the mounting hole;
• and
• responsive to the blade engaging the deeply embedded helical coil, rotating the blade and the deeply embedded helical coil to remove the deeply embedded helical coil from the mounting hole,
• wherein the first portion of the blade is rectangular in shape and is configured to be inserted into and retained within a slot in a distal end of a shaft,
• wherein the second portion of the blade has an approximate diameter-to-length ratio of 5:12 with reference to a diameter of the mounting hole into which the second portion of the blade is inserted and a length of the second portion of the blade,
• wherein the second portion of the blade has an approximate thickness-to-diameter ratio of 1:5 with reference to a thickness of the blade and the diameter of the hole into which the second portion of the blade is inserted, and
• wherein the second portion of the blade is tapered at an angle such that a first width of the second portion of the blade tapers to a second width, wherein the second width is less than the first width, and wherein the second width has an approximate width-to-diameter ratio of 4:5 with reference to the second width of the blade and the diameter of the hole into which the second portion of the blade is to be inserted.