| Patent application number | Description | Published |
|---|
| 20080197954 | ARRANGEMENT FOR COOLING A GRADIENT COIL - An arrangement for cooling a gradient coil has cooling tubes for coolant transport arranged for heat dissipation from coil positions of the gradient coil. Insulator plates for electrical insulation are arranged both between the coil positions and between the coil positions and the respective cooling tubes. The insulator plates include fabric layers (prepregs) that are impregnated with a reaction resin. The insulator plates exhibit a heat conductivity of greater than or equal to 0.5 W/mK. | 08-21-2008 |
| 20080200067 | HIGH CURRENT GRADIENT COIL-TO-COAXIAL LINE PLUGGED CONNECTION - A high current coaxial connection with two plug elements that can be connected with one another, in particular to connect a current-carrying coaxial line to a gradient coil of a magnetic resonance apparatus, has two spring contact elements arranged coaxially to one another to establish the electrical contact between the two plug elements. | 08-21-2008 |
| 20080204179 | COOLING DEVICE FOR ARRANGEMENT BETWEEN TWO GRADIENT COIL WINDINGS OF A GRADIENT COIL - In a cooling device for arrangement between two gradient coil windings of a gradient coil for dissipation of the heat (arising upon feeding current to the gradient coil windings) by means of a coolant flowing through one or more coolant channels in the cooling device, two films made of thermoplastic material are connected with one another, and are preformed in a thermal reshaping procedure to form coolant channel sections that are complementary to one another to form an inherently stable coolant channel after the connection. | 08-28-2008 |
| 20080208032 | Combined tomography scanner - A combined tomography scanner is disclosed, having at least two imaging modalities. In at least one embodiment, the scanner includes a first tomography modality having an essentially annular or tubular measurement area opening formed by an inner perimeter; an annular or cylindrical PET component as a second tomography modality having an outer perimeter, which allows insertion into the measurement area opening, and having an inner opening which forms a patient tunnel; and at least one insulation mat which can be inserted into an annular gap between the inner perimeter of the first modality and the outer perimeter of the PET component. | 08-28-2008 |
| 20090066463 | METHOD TO PRODUCE A CURVED COIL, IN PARTICULAR A SUB-COIL OF A GRADIENT COIL FOR A MAGNETIC RESONANCE APPARATUS - In a method to produce a curved coil, in particular a sub-coil of a gradient coil for a magnetic resonance apparatus, at least one conductor is wound corresponding to a predetermined pattern on a winding plate, and a winding plate composed of multiple plate elements that are moveable relative to one another is used that is formed into a curved shape after the winding of the conductor, in which curved shape the conductor is fixed while maintaining the curved shape. | 03-12-2009 |
| 20090149064 | HIGH CURRENT COAXIAL CONNECTION WITH TWO PLUG ELEMENTS, AND GRADIENT COIL CONDUCTOR - A high-current coaxial connection with two plug elements that can be connected with one another, in particular to connect a current-carrying coaxial conductor to a gradient coil of a magnetic resonance apparatus, has a first and second coupling rings provided at the respective plug elements. The first coupling ring with a first thread is screwed onto one plug contact to be fixed to the plug element while the second coupling ring with a second thread that overlaps the first coupling ring, is screwed onto a mating thread section at the other plug element. Both coupling rings are rotationally locked relative to one another and the first thread and the second thread are different. | 06-11-2009 |
| 20090230964 | ARRANGEMENT TO CORRECT EDDY CURRENTS IN A GRADIENT COIL - In an arrangement to correct eddy currents in a gradient coil of a magnetic resonance apparatus, the gradient coil having a primary gradient sub-coil and a secondary gradient sub-coil connected in series with the primary gradient sub-coil, the secondary gradient sub-coil is coupled with the primary gradient sub-coil such that the same magnitude gradient current flows through both (but in different directions) in order to compensate for magnetic field distortions of the primary gradient sub-coil. The primary gradient sub-coil has a first impedance while the secondary gradient sub-coil has a second impedance. A tuning impedance is connected in parallel with at least one of the two impedances. | 09-17-2009 |
| 20090261831 | MAGNETIC RESONANCE GRADIENT COIL FORMED BY TWO DIFFERENT TYPES OF CONDUCTORS - A gradient coil of a magnetic resonance apparatus has a first conductor structure and a second conductor structure connected with one another so that windings of the gradient coil are formed. The first conductor structure is formed exclusively of planar, electrically conductive elements that are insulated from one another. The second conductor structure is formed exclusively of conductive wires insulated from one another. | 10-22-2009 |
| 20090267605 | ARRANGEMENT TO CONNECT GRADIENT CURRENT FEED LINES IN A MAGNETIC RESONANCE APPARATUS - An arrangement for connection of gradient current feed lines in a magnetic resonance apparatus has an electrically insulating connection plate with at least one connection device. The connection device is fashioned to electrically connect a first gradient current feed line with a second gradient current feed line and is associated with a gradient coil that forms a gradient field via a supplied gradient current for a spatial direction. The supply ensues via the two gradient current feed lines connected with one another. A base plate that is fashioned for fastening the connection plate to a magnet housing of the magnetic resonance apparatus. An electrically insulating layer to damp vibrations of the connection plate is arranged between the base plate and the connection plate. | 10-29-2009 |
| 20090267607 | ARRANGEMENT TO ADJUST THE HOMOGENEITY OF A BASIC MAGNETIC FIELD - An arrangement for the adjustment of the homogeneity of a basic magnetic field in a magnetic resonance apparatus includes gradient coil support fashioned to support a gradient coil system. The gradient coil support has at least one channel that is fashioned to accommodate an associated shim tray. The shim tray is designed to accommodate ferromagnetic shim elements at predetermined positions in order to adjust the homogeneity of the basic magnetic field of the magnetic resonance apparatus. The shim tray has a first locking element coupled with it. The channel has a second locking element, and the first and second locking element are shaped such that both are positively connected with one another by a force produced by the basic magnetic field of the magnetic resonance apparatus upon activation thereof. | 10-29-2009 |
| 20100164675 | METHOD FOR PRODUCING A CYLINDRICAL RADIO-FREQUENCY SHIELD OF A CYLINDRICAL GRADIENT COIL FOR A MAGNETIC RESONANCE SYSTEM - In a method for manufacturing a cylindrical high-frequency shield of a cylindrical gradient coil for a magnetic resonance system, a number of planar shield elements are placed adjacent to one another on a cylindrical support, together with a solder band or solder strip on the support. The segments or elements are inductively soldered together by an inductive soldering device that moves along a longitudinal axis of the cylindrical support. | 07-01-2010 |
| 20110034054 | SAFEGUARD FOR UNSCREWING GRADIENT COIL CONNECTIONS - A securing part and an unscrewing safeguard system of a gradient coil plug for an MRT that can be fixed to a gradient coil bushing include a gradient coil plug, a gradient coil bushing, a cap nut with a keyed surface and, to secure the gradient coil plug to the gradient coil bushing, a multi-tooth ring fixed to the plug so that the ring cannot rotate, and a securing part with a multi-tooth ring engagement contour that can be brought into engagement with the multi-tooth ring, and with a keyed surface engagement contour that can be brought into mating with the keyed surface of the ring. | 02-10-2011 |
| 20110034059 | Stay-tight mechanism for coaxial gradient coil terminals - A stay-tight mechanism for a plug to be fixed with a union nut to a socket is provided. The mechanism has a first securing part having a flat engagement contour which engages with a flat of the union nut and having at least one recess. The mechanism has a second securing part having at least one recess and having an engagement contour which engages with an element on the connector when the first securing part is connected to the second securing part. | 02-10-2011 |
