Optical coupling for invasive devices

Details Optical coupling for invasive devices Optical coupling for invasive devices

1997-10-20

1999-03-16

Lateef, Marvin M.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

385 88, A61B 5055

Patent

active

058823050

ABSTRACT:
An optical coupling is incorporated into an invasive device used in magnetic resonance (MR) imaging. The coupling is incorporated into the invasive device between an imaging or tracking RF coil, and the MR receiver. The optical coupling has a first transducer circuit coupled to the RF which converts between optical and electrical signals. An optical fiber is coupled to the first transducer circuit and extends out of the invasive device to medical imaging equipment. Near this equipment, a second transducer circuit converts optical signals to electrical, and electrical signals to optical, just opposite that of the first transducer circuit. The present invention thereby replaces long lead wires which can cause heating during MR imaging, and may distort an MR image.

REFERENCES:
patent: 4448547 (1984-05-01), Wickersheim
patent: 4560286 (1985-12-01), Wickersheim
patent: 4656352 (1987-04-01), Langenwalter et al.
patent: 5003965 (1991-04-01), Talish et al.
patent: 5209233 (1993-05-01), Holland et al.
patent: 5411023 (1995-05-01), Morris et al.
patent: 5638001 (1997-06-01), Vrijheld et al.

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