Laser-induced shock-wave lithotripsy of canine urocystoliths and nephroliths

J. Paul Woods; Kenneth Eugene Bartels D.V.M.; Ernest L. Stair D.V.M.; Steven A. Schafer; Robert E. Nordquist

doi:10.1117/12.275047

22 May 1997 Laser-induced shock-wave lithotripsy of canine urocystoliths and nephroliths

J. Paul Woods, Kenneth Eugene Bartels D.V.M., Ernest L. Stair D.V.M., Steven A. Schafer, Robert E. Nordquist

Proceedings Volume 2970, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VII; (1997) https://doi.org/10.1117/12.275047
Event: BiOS '97, Part of Photonics West, 1997, San Jose, CA, United States

Abstract

Urolithiasis is a common disease affecting dogs which can sometimes be treated with dietary and medical protocols. In many cases, however, medical management cannot be employed because the dietary restrictions are contraindicated, effective medical dissolution protocols for the calculi (uroliths) do not exist, or obstruction by the calculi may result in deterioration of renal function during the time required for medical dissolution. At present, the management of medically untreatable calculi has been surgical removal which may result in temporary but dramatic decrease in renal function, irreversible loss of damaged nephrons, and significant risk, particularly for bilateral or recurrent nephroliths. An innovative technique for the removal of these uroliths would involve laser lithotripsy which transforms light energy into acoustical energy generating a shock wave sufficient to fragment stones (photoacoustic ablation). The laser is transmitted via quartz fibers which are small and flexible and can be used under direct vision through endoscopes resulting in effective fragmentation with little surrounding tissue damage. Lasers are becoming increasingly more utilized in veterinary medicine, in contrast to the limited availability of other non-invasive methods of treatment of nephroliths (i.e. extracorporeal shock-wave lithotripsy).

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J. Paul Woods, Kenneth Eugene Bartels D.V.M., Ernest L. Stair D.V.M., Steven A. Schafer, and Robert E. Nordquist "Laser-induced shock-wave lithotripsy of canine urocystoliths and nephroliths", Proc. SPIE 2970, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VII, (22 May 1997); https://doi.org/10.1117/12.275047

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