Fluid-core optical transmission for laser angioplasty

Kenton W. Gregory, R. Rox Anderson

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Optically transparent fluids were investigated as a means of transmitting laser energy (LE) in laser angioplasty catheters as an alternative to fused silica fibers. A catheter was constructed which transmits LE through a flowing stream of iodinated contrast media. LE is launched into a stream of contrast media and is internally reflected by a lower index of refraction cladding-providing transmission efficiency of 75%. As the stream exits the catheter, blood acts as an optical cladding and allows transmission 1 cm distal to the catheter tip. The low pressure stream removes intervening blood and provides an atraumatic surface for light interaction with target tissues. Fluoroscopy of the contrast stream allows real-time visualization of the catheter, the site of LE delivery and distal vasculature. We conclude that a fluid-core laser angioplasty catheter can transmit high peak-power laser energy and offers simplicity, blood removal, improved flexibility and real-time imaging during intravascular LE delivery.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Int Soc for Optical Engineering
Number of pages6
ISBN (Print)0819402427, 9780819402424
StatePublished - 1990
Externally publishedYes
EventProceedings of Optical Fibers in Medicine V - Los Angeles, CA, USA
Duration: Jan 14 1990Jan 19 1990

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherProceedings of Optical Fibers in Medicine V
CityLos Angeles, CA, USA

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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