| FORT WAYNE METALS RESEARCH PRODUCTS CORPORATION Patent applications |
| Patent application number | Title | Published |
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| 20110319978 | BIODEGRADABLE COMPOSITE WIRE FOR MEDICAL DEVICES - A bimetal composite wire including, in cross-section, an outer shell or tube formed of a first biodegradable material and an inner core formed of a second biodegradable material. When formed into a stent, for example, the first and second biodegradable materials may be different, and may have differing biodegradation rates. In a first embodiment, the first biodegradable material of the shell may degrade relatively slowly for retention of the mechanical integrity of a stent during vessel remodeling, and the second biodegradable material of the core may degrade relatively quickly. In a second embodiment, the first biodegradable material of the shell may degrade relatively quickly, leaving a thinner structure of a second biodegradable material of the core that may degrade relatively slowly. The biodegradation rates may be inherently controlled, such as by selection of materials, and also may be mechanically controlled, such as by material thicknesses and the geometric configuration of the shell, core, or overall device. In any embodiment, the metallic scaffold may also be coated with a drug-eluting, biodegradable polymer, to further inhibit neointimal proliferation and/or restenosis. | 12-29-2011 |
| 20110245824 | ALTERNATING CORE COMPOSITE WIRE - A wire having an outer shell and a core, the core including at least a first plurality of core segments that may be made of a first core material and a second plurality of core segments that may be made of a second core material different from the first core material. The first and second core segments are arranged in a periodic alternating arrangement along the length of the wire. The outer shell may be made of a metal, such as a biocompatible metal, and the core segments may be made of different materials to provide periodic material properties along the length of the wire. The wire is manufactured by inserting the core segments into the outer shell to form a wire construct, followed by subjecting the wire construct to one or more initial draws while applying a compressive force to the core segments on an upstream side of the die to maintain the core segments in contact with one another upon dense contact between the outer shell and core segments, following by closing of the outer shell onto the core segments, as the wire is pulled through a drawing die. The resulting wire may then be subjected to a plurality of finishing draws. Exemplary applications of the wire include medical devices, such as in vivo heating devices, thermally-actuated snares, in vivo positioning devices, stents, and tissue scaffolds. | 10-06-2011 |
| 20100243292 | METHOD FOR FUSING INSULATED WIRES, AND FUSED WIRES PRODUCED BY SUCH METHOD - A method for fusing a pair of insulated wires to one another, and a fused wire made by such method, in which the combined or major diameter of the fused wire equals, or very closely matches, the sum of the diameters of the individual wires prior to fusion. In the present method, a pair of wires, each having a coating of insulation that is substantially fully cured, are brought into close abutting contact with one another along a line contact, and thereafter pass through a heating device which heats the coatings above their a thermal transition point of at least one of the pair of wires to fuse the coatings of the wires together along the line contact. | 09-30-2010 |
| 20100107628 | METHOD FOR IMPARTING IMPROVED FATIGUE STRENGTH TO WIRE MADE OF SHAPE MEMORY ALLOYS, AND MEDICAL DEVICES MADE FROM SUCH WIRE - Wire products, such as round and flat wire, strands, cables, and tubing, are made from a shape memory material in which inherent defects within the material are isolated from the bulk material phase of the material within one or more stabilized material phases, such that the wire product demonstrates improved fatigue resistance. In one application, a method of mechanical conditioning in accordance with the present disclosure isolates inherent defects in nickel-titanium or NiTi materials in fields of a secondary material phase that are resistant to crack initiation and/or propagation, such as a martensite phase, while the remainder of the surrounding defect-free material remains in a primary or parent material phase, such as an austenite phase, whereby the overall superelastic nature of the material is preserved. | 05-06-2010 |
| 20100075168 | FATIGUE DAMAGE RESISTANT WIRE AND METHOD OF PRODUCTION THEREOF - Fatigue damage resistant metal or metal alloy wires have a submicron-scale or nanograin microstructure that demonstrates improved fatigue damage resistance properties, and methods for manufacturing such wires. The present method may be used to form a wire having a nanograin microstructure characterized by a mean grain size that is 500 nm or less, in which the wire demonstrates improved fatigue damage resistance. Wire manufactured in accordance with the present process may show improvement in one or more other material properties, such as ultimate strength, unloading plateau strength, permanent set, ductility, and recoverable strain, for example. Wire manufactured in accordance with the present process is suitable for use in a medical device, or other high end application. | 03-25-2010 |
| 20090260852 | ALTERNATING CORE COMPOSITE WIRE - A wire having an outer shell and a core, the core including at least a first plurality of core segments that may be made of a first core material and a second plurality of core segments that may be made of a second core material different from the first core material. The first and second core segments are arranged in a periodic alternating arrangement along the length of the wire. The outer shell may be made of a metal, such as a biocompatible metal, and the core segments may be made of different materials to provide periodic material properties along the length of the wire. The wire is manufactured by inserting the core segments into the outer shell to form a wire construct, followed by subjecting the wire construct to one or more initial draws while applying a compressive force to the core segments on an upstream side of the die to maintain the core segments in contact with one another upon dense contact between the outer shell and core segments, following by closing of the outer shell onto the core segments, as the wire is pulled through a drawing die. The resulting wire may then be subjected to a plurality of finishing draws. Exemplary applications of the wire include medical devices, such as in vivo heating devices, thermally-actuated snares, in vivo positioning devices, stents, and tissue scaffolds. | 10-22-2009 |
| 20090133899 | DRAWN STRAND FILLED TUBING WIRE - A wire for use in medical applications. The wire is formed by forming a bundle from a plurality of metallic strands and positioning the bundle within an outer tube. The tube and strands are then drawn down to a predetermined diameter to form a wire for use in medical devices. The wire may be covered with an insulating material. | 05-28-2009 |
