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Title: Optical coherence domain reflectometry guidewire

Abstract

A guidewire with optical sensing capabilities is based on a multiplexed optical coherence domain reflectometer (OCDR), which allows it to sense location, thickness, and structure of the arterial walls or other intra-cavity regions as it travels through the body during minimally invasive medical procedures. This information will be used both to direct the guidewire through the body by detecting vascular junctions and to evaluate the nearby tissue. The guidewire contains multiple optical fibers which couple light from the proximal to distal end. Light from the fibers at the distal end of the guidewire is directed onto 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, which are multiplexed at the proximal end to the sample arm of an optical low coherence reflectometer. The guidewire can also be used in nonmedical applications.

Inventors:
 [1];  [2];  [3];  [4]
+ Show Inventor Affiliations
  1. Livermore, CA
  2. Pleasanton, CA
  3. Danville, CA
  4. Moss Beach, CA
Issue Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
OSTI Identifier:
873504
Patent Number(s):
6175669
Assignee:
Regents of Universtiy of California (Oakland, CA)
Patent Classifications (CPCs):
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61B - DIAGNOSIS
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DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
optical; coherence; domain; reflectometry; guidewire; sensing; capabilities; based; multiplexed; reflectometer; ocdr; allows; sense; location; thickness; structure; arterial; walls; intra-cavity; regions; travels; minimally; invasive; medical; procedures; information; direct; detecting; vascular; junctions; evaluate; nearby; tissue; contains; multiple; fibers; couple; light; proximal; distal; directed; interior; cavity; via; diameter; optics; gradient; index; lenses; mirrored; corner; cubes; forward; viewing; included; reflected; scattered; collected; sample; arm; nonmedical; applications; optical sensing; gradient index; optical coherence; medical procedures; interior cavity; domain reflectometry; light reflected; medical applications; optical fibers; optical fiber; minimally invasive; couple light; coherence domain; cavity walls; sensing capabilities; cavity wall; domain reflectometer; index lenses; corner cube; /385/356/

Citation Formats

Colston, Billy W, Everett, Matthew, Da Silva, Luiz B, and Matthews, Dennis. Optical coherence domain reflectometry guidewire. United States: N. p., 2001. Web.
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Colston, Billy W, Everett, Matthew, Da Silva, Luiz B, & Matthews, Dennis. Optical coherence domain reflectometry guidewire. United States.
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Colston, Billy W, Everett, Matthew, Da Silva, Luiz B, and Matthews, Dennis. Mon . "Optical coherence domain reflectometry guidewire". United States. https://www.osti.gov/servlets/purl/873504.
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@article{osti_873504,
title = {Optical coherence domain reflectometry guidewire},
author = {Colston, Billy W and Everett, Matthew and Da Silva, Luiz B and Matthews, Dennis},
abstractNote = {A guidewire with optical sensing capabilities is based on a multiplexed optical coherence domain reflectometer (OCDR), which allows it to sense location, thickness, and structure of the arterial walls or other intra-cavity regions as it travels through the body during minimally invasive medical procedures. This information will be used both to direct the guidewire through the body by detecting vascular junctions and to evaluate the nearby tissue. The guidewire contains multiple optical fibers which couple light from the proximal to distal end. Light from the fibers at the distal end of the guidewire is directed onto 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, which are multiplexed at the proximal end to the sample arm of an optical low coherence reflectometer. The guidewire can also be used in nonmedical applications.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2001},
month = {Mon Jan 01 00:00:00 EST 2001}
}
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Works referenced in this record:

Scanning single-mode fiber optic catheter–endoscope for optical coherence tomography
journal, January 1996

Polarization-sensitive low-coherence reflectometer for birefringence characterization and ranging
journal, January 1992

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