Fluid-core optical transmission for laser angioplasty

Kenton W. Gregory M.D.; R. Rox Anderson M.D.

doi:10.1117/12.17531

1 July 1990 Fluid-core optical transmission for laser angioplasty

Kenton W. Gregory M.D., R. Rox Anderson M.D.

Proceedings Volume 1201, Optical Fibers in Medicine V; (1990) https://doi.org/10.1117/12.17531
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

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.

Citation Download Citation

Kenton W. Gregory M.D. and R. Rox Anderson M.D. "Fluid-core optical transmission for laser angioplasty", Proc. SPIE 1201, Optical Fibers in Medicine V, (1 July 1990); https://doi.org/10.1117/12.17531

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