Wirelessly powered magnetic resonance imaging signal amplification system for ingestible devices having L-C mesh circuit

US10203382B2 · kind B2 · utility

Assignee

• The United States of America, as represented by the Secretary, Department of Health and Human Services · US

Inventors

• Chunqi Qian · Rockville, US
• Joe Murphy-Boesch · Riviera Beach, US
• Alan Koretsky · Bethesda, US
• Stephen Dodd · Rockville, US

Key dates

• Filing date: Nov 29, 2017
• Grant date: Feb 12, 2019
• Expiry date: Nov 29, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/285
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An implantable parametric circuit enables local signal amplification and wireless transmission of RF signals in connection with magnetic resonance imaging systems. The parametric circuit detects RF signal detected during magnetic resonance imaging procedure, amplifies the detected RF signal, and transmits the amplified RF signal in a wireless manner to an external pick-up coil. The parametric amplifier is also configured to use another RF signal generated by an external source as the primary power source. As a result, implanted or catheter coils could be used as a wireless signal transducer without the need for a battery or a power connection.