PATENT CLAIM ANALYSIS

Application Number: 16050715
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["324", "309000"]

Abstract:
A magnetic resonance (MR) device, having a gradient arrangement that includes a gradient coil (G) with an internal resistance (Rg), as well as an electric circuit for generating variable pulse-shaped currents through the gradient arrangement. The electric circuit has at least one low-voltage voltage source (V) for generating a voltage U≤100V, and a first circuit section in the electric circuit for current in the gradient coil in one direction and a second circuit section in the electric circuit for current in the gradient coil in a reverse direction to the first circuit section. This permits the generation of accurate square-wave current pulses, with a simultaneously short charging time of the auxiliary inductance.

Claim (Index 11):
A method for operating an electric circuit for generating variable pulse-shaped currents in a gradient arrangement of a magnetic resonance (MR) device comprising:\n switching, prior to commencement of a desired gradient current flux, a first switching element and a third switching element to a conducting state, wherein the third switching element is positioned between a low-voltage voltage source and a first auxiliary coil, and wherein the first switching element is series-connected to a first resistor, by which a current is switched-on or switched-off only in the first auxiliary coil; switching a second switching element to a conducting state and the first switching element to a non-conducting state to achieve a desired current strength in the first auxiliary coil and a desired current flux in a gradient coil, wherein the second switching element is configured to switch a serial current flux through the gradient coil and the first auxiliary coil, wherein the first auxiliary coil is arranged between the low-voltage voltage source and the gradient coil, and is in series with the gradient coil; and switching, to achieve a reverse current direction, a fourth switching element and a fifth switching element to a conducting state, wherein the fourth switching element is arranged in series with a second auxiliary coil, and the fifth switching element is arranged in series with a third resistor; and switching a sixth switching element to a conducting state, and the fifth switching element to a non-conducting state, wherein the sixth switching element is arranged in series with a fourth resistor, to achieve the further desired current strength in the second auxiliary coil and the further desired current flux in the gradient coil.

Metadata:
- Claim Count in Document: 35.0
- Percentile: 95.0
- Lexical Diversity: 1.95385
- Patent Class: 324.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13703705', '10544355', '15524043', '11545040', '14851317']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5045902934345974
- 35 USC 102 Novelty (BERT): 0.4682184608304635
- Combined Prediction Score: 0.500953110174184
- Mean Citation Score: 164.77955200000005
- Max Citation Score: 170.70242
- Similarity Product: 132.7884324299097

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test