MRI-safe high impedance lead systems

US8433421B2 · kind B2 · utility

Assignees

• Boston Scientific Neuromodulation Corporation · US
• MRI Interventions, Inc. · US

Inventors

• Ergin Atalar · Columbia, US
• Justin M. Allen · Baltimore, US
• Paul A. Bottomley · Clifton Park, US
• William Eldelstein · Baltimore, US
• Parag V. Karmarkar · Columbia, US

Key dates

• Filing date: Nov 7, 2011
• Grant date: Apr 30, 2013
• Expiry date: Nov 7, 2031

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N1/086
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Some embodiments are directed to MRI/RF compatible medical interventional devices. A plurality of spaced apart high impedance circuit segments are configured to have a high impedance at a high range of radiofrequencies and a low impedance at a low range of frequencies. The high impedance circuit segments may comprise co-wound coiled inductors and can reduce, block or inhibit RJ-transmission along the lead system (20) during exposure to RF associated with a high-Held magnet MRI systems, while permuting passage of low frequency physiologic signals, treatments and/or stimuli. The devices can include at least one electrode.