Catheter guided by optical coherence domain reflectometry

Patent · Tue Jan 01 00:00:00 EST 2002

OSTI ID:874409

Everett, Matthew ^[1]; Colston, Billy W ^[2]; Da Silva, Luiz B ^[3]; Matthews, Dennis ^[4]

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1. Pleasanton, CA
2. Livermore, CA
3. Danville, CA
4. Moss Beach, CA

A guidance and viewing system based on multiplexed optical coherence domain reflectometry is incorporated into a catheter, endoscope, or other medical device to measure the location, thickness, and structure of the arterial walls or other intra-cavity regions at discrete points on the medical device during minimally invasive medical procedures. The information will be used both to guide the device through the body and to evaluate the tissue through which the device is being passed. Multiple optical fibers are situated along the circumference of the device. Light from the distal end of each fiber is directed onto the interior cavity walls via small diameter optics (such as gradient index lenses and mirrored corner cubes). Both forward viewing and side viewing fibers can be included. The light reflected or scattered from the cavity walls is then collected by the fibers and multiplexed at the proximal end to the sample arm of an optical low coherence reflectometer. The system may also be implemented in a nonmedical inspection device.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: The Regents of the University of California (Oakland, CA)
• Patent Number(s): US 6384915
• OSTI ID: 874409
• Country of Publication: United States
• Language: English

Related Subjects

catheter
guided
optical
coherence
domain
reflectometry
guidance
viewing
based
multiplexed
incorporated
endoscope
medical
device
measure
location
thickness
structure
arterial
walls
intra-cavity
regions
discrete
minimally
invasive
procedures
information
guide
evaluate
tissue
passed
multiple
fibers
situated
circumference
light
distal
fiber
directed
interior
cavity
via
diameter
optics
gradient
index
lenses
mirrored
corner
cubes
forward
included
reflected
scattered
collected
proximal
sample
arm
reflectometer
implemented
nonmedical
inspection
optical fiber
medical device
domain reflectometry
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