Patents by Inventor Martin Hergt

Martin Hergt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7518368
    Abstract: In a transmission device for use in magnetic resonance systems for transmitting magnetic resonance signals from a number of local coils to an evaluation device, the signals are transmitted as optical signals in an optical conductor between a first transmitter-side transducer that transduces electrical signals into optical signals and a second receiver-side transducer that transduces optical signals into electrical signals, and an analog/digital converter is respectively provided between the local coils and the first, transmitter-side transducer. The local coils are connected by electronic elements to a single circuit board, and a number of preamplifiers, the analog/digital converters and a multiplexer are integrated onto the circuit board such that the multiplexer merges the outputs of the multiple analog/digital converters.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: April 14, 2009
    Assignee: Siemens Aktiengesellschaft
    Inventors: Mario Festag, Martin Hergt, Markus Vester
  • Patent number: 7486077
    Abstract: A magnetic resonance system has a base unit and a patient bed. The base unit embodies a magnet system by which magnetic fields can be generated in an excitation region, these magnetic fields causing nuclear spins in an examination subject in the excitation region to be excited to emit a magnetic resonance signal. The patient bed can be moved in a travel direction relative to the base body over a travel range. By movement of the patient bed the examination subject can be brought into the excitation region. A number of base unit coupling elements that are connected with an evaluation device for evaluation of magnetic resonance signals are arranged to be stationary at the base unit relative to the base unit. A number of patient bed coupling elements that are connected with a local coil for acquisition of the magnetic resonance signal are arranged on the patient bed so as to be stationary relative to the patient bed.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: February 3, 2009
    Assignee: Siemens Aktiengesellschaft
    Inventors: Martin Hergt, Thomas Kundner
  • Publication number: 20080169816
    Abstract: In a transmission device for use in magnetic resonance systems for transmitting magnetic resonance signals from a number of local coils to an evaluation device, the signals are transmitted as optical signals in an optical conductor between a first transmitter-side transducer that transduces electrical signals into optical signals and a second receiver-side transducer that transduces optical signals into electrical signals, and an analog/digital converter is respectively provided between the local coils and the first, transmitter-side transducer. The local coils are connected by electronic elements to a single circuit board, and a number of preamplifiers, the analog/digital converters and a multiplexer are integrated onto the circuit board such that the multiplexer merges the outputs of the multiple analog/digital converters.
    Type: Application
    Filed: January 15, 2008
    Publication date: July 17, 2008
    Inventors: Mario Festag, Martin Hergt, Markus Vester
  • Publication number: 20080143332
    Abstract: A magnetic resonance system has a base unit and a patient bed. The base unit embodies a magnet system by which magnetic fields can be generated in an excitation region, these magnetic fields causing nuclear spins in an examination subject in the excitation region to be excited to emit a magnetic resonance signal. The patient bed can be moved in a travel direction relative to the base body over a travel range. By movement of the patient bed the examination subject can be brought into the excitation region. A number of base unit coupling elements that are connected with an evaluation device for evaluation of magnetic resonance signals are arranged to be stationary at the base unit relative to the base unit. A number of patient bed coupling elements that are connected with a local coil for acquisition of the magnetic resonance signal are arranged on the patient bed so as to be stationary relative to the patient bed.
    Type: Application
    Filed: December 11, 2007
    Publication date: June 19, 2008
    Inventors: Martin Hergt, Thomas Kundner
  • Publication number: 20080129296
    Abstract: A radio-frequency coil arrangement has a number of conductor traces forming basic coils and with capacitors interconnected in the conductor traces. Conductor traces of various basic coils intersect at node points. At least one switching arrangement for selective, reversible connection of the conductor traces to form different coil geometries is provided at least some of the node points.
    Type: Application
    Filed: November 21, 2007
    Publication date: June 5, 2008
    Inventors: Hubertus Fischer, Oliver Heid, Martin Hergt
  • Publication number: 20080106264
    Abstract: A magnetic resonance system that has a magnet system that generates magnetic fields in an excitation region, allowing nuclei in an examination subject in the excitation region to be excited to emit a magnetic resonance signal. A reception antenna device with multiple local coils for reception of the magnetic resonance signals is arranged in proximity to the examination subject, and has a base part and an attachment part. The attachment part can be placed on the base part such that the examination subject is located between the base part and the attachment part (6). The multiple local coils are respectively connected with an evaluation device for evaluation of magnetic resonance signals.
    Type: Application
    Filed: October 26, 2007
    Publication date: May 8, 2008
    Inventors: Hubertus Fischer, Martin Hergt, Thomas Kundner
  • Publication number: 20070207763
    Abstract: In a mixer circuit with a balanced frequency mixer with varactor diodes, a first input signal that exhibits a first input frequency can be fed to the frequency mixer via a first input. Furthermore, a second input signal that exhibits a second input frequency can be fed to the frequency mixer via a second input. The frequency mixer has at least two amplifier elements fashioned as varactor diodes. These amplifier elements mix the input signals with one another into a mix signal with a first signal component and a second signal component. The first signal component exhibits a first component frequency, the second signal component a second component frequency. The first component frequency is equal to the sum of the first and second input frequencies, the second component frequency is equal to the difference of the first and second input frequencies. An output signal that contains at least one of the signal components can be tapped via the output.
    Type: Application
    Filed: March 1, 2007
    Publication date: September 6, 2007
    Inventors: Jan Bollenbeck, Martin Hergt, Markus Vester
  • Patent number: 7233148
    Abstract: A sheath wave barrier unit for an outer shielding of a coaxial cable that also has an inner conductor, has two sheath wave barriers that damp or suppress sheath waves that are induced in two series conductor segments of the outer shielding. Each sheath wave barrier forms a resonant oscillating circuit at a predetermined high frequency, with the high frequency being the same for both sheath wave barriers. The sheath wave barrier unit has a shielding device with at least one radial shield by means of which the sheath wave barriers are decoupled from one another. The sheath wave barriers and the shielding device are arranged on a common carrier.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: June 19, 2007
    Assignee: Siemens Aktiengesellschaft
    Inventors: Martin Hergt, Arne Reykowski
  • Publication number: 20050270116
    Abstract: A sheath wave barrier unit for an outer shielding of a coaxial cable that also has an inner conductor, has two sheath wave barriers that damp or suppress sheath waves that are induced in two series conductor segments of the outer shielding. Each sheath wave barrier forms a resonant oscillating circuit at a predetermined high frequency, with the high frequency being the same for both sheath wave barriers. The sheath wave barrier unit has a shielding device with at least one radial shield by means of which the sheath wave barriers are decoupled from one another. The sheath wave barriers and the shielding device are arranged on a common carrier.
    Type: Application
    Filed: March 31, 2005
    Publication date: December 8, 2005
    Inventors: Martin Hergt, Arne Reykowski