Abstract:
A switching device has a housing and at least one contact point, which comprises a fixed contact piece and a moveable contact piece, and having a thermal and magnetic release, which comprises a tripping coil and a tripping armature. The tripping armature comprises at least two operatively connected tripping armature parts. The first tripping armature part is formed from a first material having a magnetic shape memory effect. The second tripping armature part is formed from a bimetallic strip or from a material having a thermal shape memory effect or from a material having a combined thermal and magnetic shape memory effect. The tripping armature, both under the influence of the magnetic field of the tripping coil in the event of a short-circuit current and under the influence of an increase in temperature brought about by overcurrent, can be deformed and, as a result, the contact point can be caused to open. Uses of a material having a magnetic shape memory effect in a thermal and electromagnetic release are also disclosed.
Abstract:
A wrap for a body part such as a human wrist. The wrap includes an elongated flexible and helical-shaped member which is constructed of a material having shape memory so that, upon release of the member following deflection of the member, the member returns to its original helical shape. A covering is disposed around the member which either absorbs perspiration or applies a medication.
Abstract:
A therapeutic support apparatus comprises multiple layers of foam having different densities and memories. The support apparatus comfortably supports the weight of a user while minimizing pressure points between the user and the support apparatus. Each foam layer has a unique density and memory based upon the type of tissue the layer is intended to support. A relatively low-memory outer foam layer made from latex non-viscoelastic foam substantially supports skin and subcutaneous tissue. A relatively high-density and medium-memory intermediate layer made from polyurethane foam supports muscle tissue. A relatively high-density and high-high memory core layer made from polyurethane foam supports the spine. In combination, these layers minimize hyperextension and promote blood circulation and comfort while the support apparatus is used by a user positioned in a supine, recumbent, or sideways-lying position.
Abstract:
Active seal assemblies employing active materials that can be controlled and remotely changed to alter the seal effectiveness, wherein the active seal assemblies actively change modulus properties such as stiffness, shape orientation, and the like. In this manner, in seal applications such as a vehicle door application, door opening and closing efforts can be minimized yet seal effectiveness can be maximized.
Abstract:
A membrane actuator includes a magnetically actuatable membrane and a magnetic trigger. The membrane includes a shape memory alloy (SMA), and the magnetic trigger is configured to induce a martensitic transformation in the SMA, to produce a larger force than would be achievable with non-SMA-based materials. Such a membrane actuator can be beneficially incorporated into a wide variety of devices, including fluid pumps, shock absorbing systems, and synthetic jet producing devices for use in an aircraft. The membrane/diaphragm can be formed from a ferromagnetic SMA, or a ferromagnetic material can be coupled with an SMA such that the SMA and the ferromagnetic material move together. A hybrid magnetic trigger, including a permanent magnet and an electromagnet, is preferably used for the magnetic trigger, as hybrid magnetic triggers are easy to control, and produce larger magnetic gradients than permanent magnets or electromagnets alone.
Abstract:
The invention relates to a tumble dryable item of apparel, in particular a suit jacket, comprising a plurality of inner surface and outer surface garment sections, wherein at least one of the outer surface garment sections includes natural fiber and at least one of the inner surface garment sections includes synthetic fiber and has shape memory, and at least one synthetic interface tape between an inner surface garment section and an outer surface garment sections, wherein the synthetic interface tape is fixed on a location of the jacket such that the jacket substantially retains its shape through a tumble dry cycle.
Abstract:
A curved ablation catheter imparts ablative energy to target tissue, for example, along a trabecular slope, e.g., in the right atrium along the isthmus between the ostium of the inferior vena cava and the tricuspid valve. The catheter is formed with a preset curvature that, when deployed, both translates linearly and increases in radius to aid in the formation of spot or continuous linear lesions. A method of treating atrial flutter employs the curved ablation catheter.
Abstract:
A process of providing ventilation points on a flexible substrate includes treating the flexible substrate with a chemical or a combination of chemicals that react to an environmental factor; and using that reaction to the environmental factor to regulate functioning of the ventilation points prepared on the substrate. A ventilated substrate includes ventilation points in the substrate; and a chemical or combination of chemicals applied to the substrate that regulate the ventilation points in response to an environmental factor.
Abstract:
A catheter for mapping and/or ablating continuous linear or circumferential lesions at the intersection of a generally flat structure, such as the left atrium, and the ostium of generally cavernous regions of the heart, including pulmonary vein and the pulmonary venous antrum, comprises a catheter body with an intermediate section that is connected to a tip assembly by a highly flexible section. The intermediate section has at its distal end a preformed section, e.g., a curve, the intermediate section being deflectable in a direction opposite to the curve. The highly flexible section presets the tip assembly at an off-axis and/or off-plane angles from the preformed section. Accordingly, the preformed section is adapted to sit in the region and the preset angles of the ablation assembly enable contact with surrounding tissue. A high bending modulus enables the flexible section absorb displacement force applied to the ablation assembly, such as when the tip assembly encounters uneven tissue surface, without displacing the curve from the region. The tip assembly can be irrigated as enabled by a plurality of irrigation ports, a coil electrode, and a porous covering to disperse fluid over the outer surface of the tip assembly.
Abstract:
The present invention is directed to the formation of structures in situ through the principles of ligand binding. These structures are efficacious, for example, for tissue repair as well as for short- and long-term disease and condition management. According to one aspect of the invention, an injectable composition comprising self-assembling nanoparticles is provided. The self-assembling nanoparticles include: (a) a nanoparticle portion, (b) tissue binding ligands attached to the nanoparticle portion, which cause preferential binding and accumulation of the nanoparticles at one or more targeted tissue locations upon injection of the composition into the body, and (c) first and second interparticle binding ligands attached to the nanoparticle portion, which cause interparticle binding upon injection of the composition into the body.