Abstract: An implantable device that contains a power source, a device for producing electrical signals, and a conductor assembly for communicating the electrical signals to biological matter. The conductor assembly contains of a conductor that is capable of being flexed at least about 15 degrees and that has a resistivity at 20 degrees Centigrade of from about 1 to about 100 micro ohm-centimeters. The conductor assembly also contains a magnetic shield located above the flexible conductor; the magnetic shield contains an antithrombogenic composition. The magnetic shield also contains a magnetic shielding material that has a magnetic shielding factor of at least about 0.5.

Abstract: An implantable medical device comprised of a lumen. When the device is, at different points in time, exposed to two different radio frequency electromagnetic radiations, one of whose frequencies differs from the other by a factor of at least 1.5, at least 90 percent of each of the radio frequency electromagnetic radiations penetrates to the lumen of the device.

Abstract: An assembly for protecting biological tissue from the effects of heating. The assembly contains a conductor in contact with the biological tissue and forming an electrical circuit comprising the biological tissue. The assembly contains a device for modifying the impedance of the electrical circuit such that, at a frequency of from about 10 megahertz to about 150 megahertz, such impedance is at least about 0.5 ohms per centimeter of length of said conductor. The assembly also contains a device for limiting the flow of current through the biological tissue such that, when the assembly is exposed to an alternating current electromagnetic field at a frequency of 64 megahertz and a magnetic field strength of 1.5 Tesla for 15 minutes, the temperature of the biological tissue does not exceed 42 degrees Celsius.

Abstract: An assembly for shielding an implanted medical device from the effects of high-frequency radiation and for emitting magnetic resonance signals during magnetic resonance imaging. The assembly includes an implanted medical device and a magnetic shield comprised of nanomagnetic material disposed between the medical device and the high-frequency radiation. In one embodiment, the magnetic resonance signals are detected by a receiver, which is thus able to locate the implanted medical device within a biological organism.

Abstract: An implantable medical device comprised of a lumen with a volume of from about 1×10?7 cubic meters to 1×10?5 cubic meters wherein, when said device is exposed to radio frequency electromagnetic radiation with a frequency of from 10 megahertz to about 200 megahertz, at least 90 percent of the electromagnetic radiation penetrates to the lumen of the device, and the concentration of the electromagnetic radiation that penetrates to the lumen of the device is substantially identical at different points within such lumen.

Abstract: A conductor assembly that contains a flexible conductor and a layer of nanomagnetic material coated onto the conductor. The layer of nanomagnetic material has a tensile modulus of elasticity of at least about 15×106 pounds per square inch, an average particle size of less than 100 nanometers, a saturation magnetization of from about 200 to about 26,000 Gauss, and a thickness of less than about 2 microns.

Abstract: A contrast-enhancing agent that has a saturation magnetization of at least 1.5 Tesla and that, when contacted with MRI radiation, provides a first gray scale response that is substantially uniform and that has a resolution of at least about 1 millimeter. When the contrast-enhancing agent is repeatedly contacted with said MRI radiation over a period of at least one year, it will repeatedly produce gray scale responses which are substantially identical to the first gray scale response.

Abstract: A coated assembly with an inductance of from about 0.1 to about 5 nanohenries and a capacitance of from about 0.1 to about 10 nanofarads. The coated assembly contains a stent and a coating. When the assembly is exposed to radio frequency electromagnetic radiation with a frequency of from 10 megahertz to about 200 megahertz, at least 90 percent of the electromagnetic radiation penetrates to the interior of the stent.

Abstract: Disclosed in this specification is an apparatus for storing hydrogen which is comprised of molecular hydrogen, halloysite rods, and a supporting substrate wherein hydrogen is stored within the lumen of the halloysite rods.

Abstract: Materials, devices and methods are described for making and using devices of enhanced electromagnetic transparency. Desirable embodiments include for example, nanomagnetic compositions that provide series and/or parallel resonances that act to diminish induced current and/or voltage in devices and thereby alter electromagnetic penetration. Devices, including medical implants, such as stents, may be formed or modified in a variety of protective conformations. Such conformations include, for example, the addition or formulation with layer(s) of protective material or with of discrete components such as multiple capacitors and inductors.

Abstract: A magnetically shielded conductor assembly containing a conductor disposed within an insulating matrix, and nanomagnetic material and nanoelectrical material disposed around the conductor. The conductor has a resistivity at 20 degrees Centigrade of from about 1 to about 100 microohm-centimeters. The insulating matrix is composed of nano-sized particles having a maximum dimension of from about 10 to about 100 nanometers. The insulating matrix has a resistivity of from about 1×109 to about 1×10 13 ohm-centimeter. The nanomagnetic material has an average particle size of less than about 100 nanometers. The nanomagnetic material has a saturation magnetization of from about 200 to about 26,000 Gauss. The magnetically shielded conductor assembly is flexible, having a bend radius of less than 2 centimeters.

Abstract: A medical device comprised of a coating that inhibits distortion of medical resonance images taken of the device. When the device is exposed to radio frequency electromagnetic radiation with a frequency of from 10 megahertz to about 200 megahertz, at least 90 percent of such radio frequency electromagnetic radiation penetrates to the lumen of the device; and the concentration of the radio frequency electromagnetic radiation that penetrates to the lumen of the device is substantially identical at different points within such interior. The coating is comprised of magnetic material with an average particle size of less than about 40 nanometers.

Abstract: Disclosed in this specification is a stent coated with a layer comprised of particulates which have an average particle size of less than 100 nanometers; a saturation magnetization of at least 2,000 gauss; and where the average coherence length between the particulates is from about 1 nanometer to about 50 nanometers.

Abstract: A conductor assembly that contains a flexible conductor and a layer of nanomagnetic material coated onto the conductor. The layer of nanomagnetic material has a tensile modulus of elasticity of at least about 15×106 pounds per square inch, an average particle size of less than 100 nanometers, a saturation magnetization of from about 200 to about 26,000 Gauss, and a thickness of less than about 2 microns.

Abstract: A metallic stent that, when it is contacted with an input alternating current electromagnetic field and a static magnetic field that contacts biological matter located within the stent, an output signal is produced that that has a fixed phase relationship with the input signal and that has a magnitude that is at least about 0.01 times as great as the magnitude of the input signal.

Abstract: A coated assembly comprised of a coating that has a relative magnetic permeability of at least 1.1 over the range of frequencies of from about 10 megahertz to about 200 megahertz, an increase of such relative magnetic permeability over such range of from about 1×10?14 to about 1×10?6 per hertz, and a magnetization, when measured at a direct current magnetic field of 2 Tesla, of from about 0.1 to about 10 electromagnetic units per cubic centimeter.

Abstract: An implantable medical device assembly that contains magnetic material with a saturation magnetization of at least about 0.15 Tesla and which has a direct current permeability at a static magnetic field value of 1.5 Tesla of at least 1.1. When the magnetic material and is simultaneously subjected to an alternating current electromagnetic field with a frequency of 64 megahertz and a static magnetic field of 1.5 Tesla, it has a magnetization of less than 100 electromagnetic units per cubic centimeter.

Abstract: A marking material that, when disposed upon medical devices used during interventional medical procedures with imaging modalities such as X-ray Fluoroscopy and Magnetic Resonance Imaging, renders such medical devices visible with minimal imaging artifacts. The material comprises a particulate material with generally higher atomic weight disposed within a matrix material with generally lower atomic weight. In one embodiment the particulate material is magnetic. In another embodiment the particulate material is non-magnetic.

Abstract: A process for transferring electrical energy from a first electrical energy storage device to a second, rechargeable electrical storage device. In this process, the voltage in the energy storage devices are sensed and the difference in such voltages is determined. The rate of current flow from the first to the second energy storage device (and vice versa) is then repeatedly adjusted. A controller, which is preferably powered by the first and second storage devices, monitors and adjusts the voltage levels in each of such devices and the current flows between the devices.

Abstract: A fiber assembly comprised of nanoparticles, wherein said nanoparticles are a mixture of nanomagnetic particles and nanooptical particles.