A method of treating a varicose vein involves inserting an assembly into the vein, the assembly being comprised of an elongated body possessing a distal end at which is located an energy emitting member having a shape contacting the inner wall of the vein with the distal end of the energy emitting member having the shape such that the distal end of the energy emitting member contacts the inner wall along a line rotating the energy emitting member while the energy emitting member contacts the inner wall along the line and occluding the vein by applying energy from the energy emitting member to the inner wall of the vein
