Multi-frequency high electric field systems for magnetic resonance imaging safety testing of medical devices
AssigneeUniversity of Houston System
InventorJi Chen
Life of this patent
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Abstract
In an embodiment, the present disclosure pertains to electric field generators that include a signal generator electrically connected to a power amplifier, a impedance matching circuit electrically connected to the power amplifier, and a power divider electrically connected to the impedance matching circuit and to at least one of a first wall, a second wall, a third wall, a fourth wall, or a base area. In an additional embodiment, the present disclosure pertains to method of determining radio frequency (RF)-induced heating on a medical device utilizing an electric field generator of the present disclosure. Additional embodiments of the present disclosure pertain to methods of making electric field generators for testing a medical device.
Claims30
An electric field generator for testing a medical device, the electric field generator comprising:
- a first wall, a second wall, a third wall, and a fourth wall forming an enclosed shape having a cavity therein for housing the medical device;
- a base area at the bottom of the enclosed shape;
- and
- a power divider electrically connected to at least one of the first wall, the second wall, the third wall, the fourth wall, or the base area.
A method of determining radio frequency (RF)-induced heating on a medical device, the method comprising:
- determining a validation pathway;
- incorporating the validation pathway on a grid in an electric field generator;
- incorporating the medical device in a central slice of a conductive composition within the electric field generator;
- applying power to the electric field generator;
- generating a uniform electric field within the electric field generator;
- wherein the uniform electric field induces RF-heating within the medical device;
- and
- measuring a change in temperature of the medical device.
A method of making an electric field generator for testing a medical device, the method comprising:
- assembling a first wall, a second wall, a third wall and a fourth wall to form an enclosed shape having a cavity therein for housing the medical device;
- assembling a base area at the bottom of the enclosed shape;
- and
- electrically connecting a power divider to at least one of the first wall, the second wall, the third wall, the fourth wall, or the base area.
Dependencies are inferred from the claim text.