Siemens Aktiengesellschaft

Siemens Audiologische Technik Gmbh

Winfried Arz

Torsten Niederdränk

Johann Schuster

Peter Dietz

Franz Schmitt

Matthias Gebhardt

Matthias Alexander Weber

Karl-Heinz Ideler

Rudolf Roeckelein

Stefan Stocker

Lothar Schön

Gottfried Rückerl

Matthias Drobnitzky

Thomas Fischer

Franz Boemmel

Peter Distler

Thomas Lotter

Dieter Dlugosch

Michael Schaaf

Udo Franzke

Lothar Regenfus

The operation of appliances in a home network is to be made more user-friendly, for which purpose provision is made for the hearing device remote control unit to be integrated as a component in a network. This would, for example, enable warning signals triggered by the network to be provided in the hearing devices.

Hearing device remote control unit as a network component and corresponding use thereof

A remote control for a hearing aid device prevents incorrect operation by having operating elements that effect a signal transmission from the remote control to a hearing aid device disposed on a first side of the remote control housing, and operating elements that additionally effect a signal transmission from the hearing aid device back to the remote control disposed on a second housing side of the remote control. The first and second housing sides are disposed in an easily tactilely distinguishable relation to each other, such as by being substantially orthogonal. The different functions of the operating elements and therefore can be differentiated purely by contact with the remote control.

Remote control for hearing aid devices

A gradient coil system for a magnetic resonance apparatus has gradient coils and at least one cooling tube for cooling the gradient coils using a coolant flowing through the cooling tube. The cooling tube is formed of a flexible thermoplastic material, augmented with a filler, and has a thermal conductivity greater than 0.5 W/mK.

Gradient coil system for a magnetic resonance tomography device having a more effective cooling

A magnetic resonance tomography device, wherein vibrations of device components, particularly in the low frequency range, are attenuated, as a magnet body surrounded by a magnet shell, which surrounds and defines an inner area. A gradient coil system is disposed in the inner area and an inner encapsulation cylinder also is disposed therein. The magnetic shell and the gradient coil system are externally and acoustically sealed from the inner encapsulation cylinder, and from a capsule. The capsule is formed as a three-layer system, including a cover layer, a full foam layer and a partial foam layer.

Encapsulation of a magnetic resonance tomography device for attenuation of low sound frequencies

Remote control for a hearing aid

A shielded compartment for a magnetic resonance apparatus for shielding electromagnetic radio-frequency fields has at least one region that is formed of a foamed metal.

Shielded compartment for a magnetic resonance apparatus

In an MR tomography apparatus damping laminated sheets are provided for reducing vibrations The MR tomography apparatus has a magnet body which is surrounded by a magnet housing which surrounds and delimits an interior volume. A gradient coil system is located in this interior volume. On an inner side of the magnet housing that delimits the interior volume, a damping laminated sheet structure is provided for absorbing acoustic vibrations which are produced on switching of the gradient coil system.

Magnetic resonance tomography apparatus having damping laminated sheets for reducing vibrations

A directly cooled magnetic coil, particularly a gradient coil for a magnetic resonance apparatus, has the conductors forming the windings which are provided with an inner cooling channel for conducting a cooling fluid therethrough, and the conductors are fashioned as profiled segment conductors whose individual profiled segments surround a cooling tube. The cooling tube is composed of material that is not electrically conductive, or is only slightly electrically conductive, particularly a flexible plastic.

Directly cooled magnetic coil, particularly a gradient coil, and method for manufacturing conductors therefor

A magnetic resonance apparatus has at least one section of an optical fiber with at least one Bragg grating having a Bragg wavelength. The Bragg grating is arranged with respect to the magnetic resonance apparatus so that at least one deformation of the magnetic resonance apparatus can be acquired.

Magnetic resonance apparatus having an optical fiber with a Bragg grating for measuring mechanical deformations

In a magnetic resonance apparatus having at least one generator of mechanical oscillations, at least one part of the magnetic resonance apparatus is fashioned of a metal foam for damping the oscillations.

Magnetic resonance apparatus with a part thereof made of foamed metal for damping mechanical oscillations

A switchable longitudinal gradient coil with a cylindrical structure and windings that are symmetrically arranged around the Z-axis is composed of discrete windings or winding packets, or of continuous windings or continuous winding packets, which are provided with a separate supply line to an end face and which, outside of the coil, can be selectively connected to one another individually and/or in groups corresponding to the desired performance features.

Switchable longitudinal gradient coil

In a method for the operation of a magnetic resonance apparatus having at least one gradient coil and elements for generating a force acting on the gradient tube, with which natural oscillation modes of the gradient tube are excited, so as to oppose oscillations of the gradient tube produced by Lorentz forces, drive signals are supplied for the excitation of the elements, and the amplitudes and/or the phases of the drive signals are varied for adjusting the force generated by the elements and acting on the gradient tube so as to compensate modifications of the oscillatory behavior of the gradient tube. The drive signals are varied dependent on at least one measured value representing a criterion for the change of the oscillatory behavior.

Method of cancelling lorentz force-produced oscillations in a gradient tube, and magnetic resonance imaging apparatus operating according to the method

Growing community of inventors

Erlangen, Germany

Winfried Arz