Abstract:
A highly flexible radiopaque cable includes two, and preferably three or more strands of nickel-titanium (NiTi) alloy wire which are twined about a higher density core wire preferably made of at least one of silver, gold or platinum-iridium to form a wire rope. The wire rope is drawn through successive dies to reduce its diameter until the outer surface of the cable is substantially smooth, the cross section of the cable is substantially circular, and the overall diameter of the wire rope is reduced by 20-50%. The cable is then annealed to remove the effects of cold working. The resulting cable has been found to have a substantially equal or improved flexibility (i.e., a lower modulus of elasticity) relative to single strand nickel-titanium wires of the same diameter and a higher radiopacity. In an alternative embodiment, no core wire is utilized, and the higher density wire is drawn with two or more strands of NiTi wire. In another embodiment, the higher density wire is radioactive.
Abstract:
An electrically conductive cable includes a number of conductive strands which are twined to form a wire rope. The wire rope is drawn through a die to reduce its diameter until the outer surface of the conductor is smooth and the cross section of the conductor is substantially circular. According to a presently preferred embodiment, the electrically conductive cable is successively drawn through four dies of decreasing diameter so that the overall diameter of the wire rope is reduced by 30-40%. The resulting electrically conductive cable has the tensile strength advantage and the low resistance advantage of a solid conductor with the flexibility advantage of a wire rope cable. In addition, the smooth outer surface of the electrically conductive cable according to the invention is easily insulated with an extruded material.
Abstract:
A garment adapted to support a female chest includes a pair of frontal cup portions of flexible material adapted to cover the chest area of a wearer, each of the cup portions having a perimeter. A multifilament twisted and drawn or swaged cable support element is attached to a portion of the perimeter to provide support for each cup in a manner which is comfortable to the wearer. The multifilament twisted and drawn or swaged cable support element is preferably comprised of a plurality of nickel-titanium wires or a plurality of stainless steel wires, which were formed by first twisting multiple filaments together and then drawing the twisted filaments through multiple dies and/or swaging to form a cable. The multifilament twisted and drawn or swaged cable provides superior support and comfort.