Rapid Thulium Fiber Laser Lithotripsy at Pulse Rates up to 500 Hz Using a Stone Basket

Luke A. Hardy, Christopher R. Wilson, Pierce B. Irby, Nathaniel M. Fried

Research output: Contribution to journalArticle

Abstract

Our laboratory is currently studying the experimental thulium fiber laser (TFL) for ablation of kidney stones. Previous studies have reported increased stone ablation rates with TFL operation at higher pulse rates; however, stone retropulsion remains an obstacle to more efficient stone ablation. This study explores TFL operation at high pulse rates in combination with a stone stabilization device (e.g., stone basket) for improved stone ablation efficiency. A TFL beam with pulse energy of 35 mJ, pulse duration of 500 μs, and pulse rates of 10-500 Hz was delivered through 100-μm-core, low-OH, silica fibers, in contact mode with human uric acid (UA) and calcium oxalate monohydrate (COM) stones, ex vivo. TFL operation at 500 Hz produced mean UA and COM stone ablation rates up to 4.4 and 1.4 mg/s, respectively. High TFL pulse rates produce increased stone ablation rates that may be suitable for future translation into the clinic.

Original languageEnglish (US)
Article number6737249
JournalIEEE Journal on Selected Topics in Quantum Electronics
Volume20
Issue number5
DOIs
StatePublished - Sep 1 2014

Fingerprint

baskets
Thulium
pulse rate
thulium
Fiber lasers
Ablation
fiber lasers
Laser pulses
rocks
ablation
uric acid
Calcium
oxalates
Acids
calcium
kidney stones
Laser beams
Stabilization
Silica
Fibers

Keywords

  • Ablation
  • fiber laser
  • fragmentation
  • holmium
  • lithotripsy
  • thulium
  • urinary stones

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

Rapid Thulium Fiber Laser Lithotripsy at Pulse Rates up to 500 Hz Using a Stone Basket. / Hardy, Luke A.; Wilson, Christopher R.; Irby, Pierce B.; Fried, Nathaniel M.

In: IEEE Journal on Selected Topics in Quantum Electronics, Vol. 20, No. 5, 6737249, 01.09.2014.

Research output: Contribution to journalArticle

Hardy, Luke A. ; Wilson, Christopher R. ; Irby, Pierce B. ; Fried, Nathaniel M. / Rapid Thulium Fiber Laser Lithotripsy at Pulse Rates up to 500 Hz Using a Stone Basket. In: IEEE Journal on Selected Topics in Quantum Electronics. 2014 ; Vol. 20, No. 5.
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