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[Laser lithotripsy with the neodymium YAG laser]
R Hofmann1, R Hartung, H Schmidt-Kloiber
1Urologische Klinik, Technischen Universität München, Klinikum re. d. Isar.
Der Urologe. Ausg. A
|November 1, 1990
Summary
Laser-induced shock wave lithotripsy (LISL) effectively fragments urinary calculi using a novel bifunctional laser. This technology offers both nanosecond and millisecond pulses for stone disintegration and tissue coagulation, improving treatment outcomes.
Area of Science:
- Urology
- Laser Physics
- Biomedical Engineering
Context:
- Urinary stone disease affects a significant portion of the population.
- Current lithotripsy methods have limitations in efficacy and patient comfort.
- Laser-induced shock wave lithotripsy (LISL) utilizes plasma bubble generation for stone fragmentation.
Purpose:
- To introduce and evaluate a novel bifunctional laser system for lithotripsy.
- To assess the efficacy of nanosecond and millisecond laser pulses for urinary and biliary stone treatment.
- To report outcomes of LISL using flexible and rigid ureteroscopes.
Summary:
- A bifunctional laser system capable of delivering both nanosecond and millisecond pulses was used for laser-induced shock wave lithotripsy (LISL).
- 189 ureteric stones in 185 patients were treated, with 179 successfully fragmented using flexible or rigid ureteroscopes.
- The system demonstrated efficacy in disintegrating urinary calculi and offers potential for biliary stone treatment and tissue coagulation.
Impact:
- The novel bifunctional laser offers a versatile tool for stone management, potentially improving fragmentation rates and treatment versatility.
- The study highlights the successful application of LISL in a large patient cohort, demonstrating its clinical feasibility.
- The development of specialized cystoscopes facilitates easier endoscopic access for ureteral procedures.