In vitro study of pulsed Ho:YAG laser meniscectomy

Steven L. Jacques; Jon A. Schwartz; Gary Gofstein; C. Thomas Vangsness M.D.

doi:10.1117/12.184889

7 September 1994 In vitro study of pulsed Ho:YAG laser meniscectomy

Steven L. Jacques, Jon A. Schwartz, Gary Gofstein, C. Thomas Vangsness M.D.

Proceedings Volume 2128, Laser Surgery: Advanced Characterization, Therapeutics, and Systems IV; (1994) https://doi.org/10.1117/12.184889
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

The ablation of ex vivo human samples of meniscus using the pulsed holmium:YAG (Ho:YAG) laser was studied. Delivery was by optical fiber in contact with the tissue. The rate of ablation was determined as (mm/pulse) for a range of pulse energies. Ablation with tissue in air versus under saline yielded similar rates of ablation, with the under-saline rate slightly higher. Experiments with two optical fiber sizes (200 micrometers and 600 micrometers ) suggested that total pulse energy [J/pulse] rather than radiant exposure [J/cm²/pulse] may be the better predictor for ablation rate. For comparison, results of a study of continuous Nd:YAG laser ablation of chicken breast using two beam sizes are also presented which suggest that total beam power [W] rather than irradiance [W/cm²] may be the better predictor for ablation rate. Comparison with the efficiency of simple boiling water indicates that laser ablation (both pulsed and continuous) is only about 10% as efficient as boiling water.

Citation Download Citation

Steven L. Jacques, Jon A. Schwartz, Gary Gofstein, and C. Thomas Vangsness M.D. "In vitro study of pulsed Ho:YAG laser meniscectomy", Proc. SPIE 2128, Laser Surgery: Advanced Characterization, Therapeutics, and Systems IV, (7 September 1994); https://doi.org/10.1117/12.184889

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KEYWORDS

Laser ablation

Pulsed laser operation

Nd:YAG lasers

Optical fibers

Breast

Fiber lasers

In vitro testing

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