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Related Experiment Videos

A prototype device for nonimmersion shock wave lithotripsy using ultrasonography for calculus localization.

F F Marshall1, F Weiskopf, A Singh

  • 1James Buchanan Brady Urological Institute, Johns Hopkins University, Baltimore, Maryland.

The Journal of Urology
|August 1, 1988
PubMed
Summary

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Extracorporeal shock wave lithotripsy (ESWL) offers a new treatment for kidney stones. This study developed and tested an ESWL device, successfully fragmenting calculi in laboratory and animal models.

Area of Science:

  • Biomedical Engineering
  • Urology
  • Nephrology

Background:

  • Renal calculi (kidney stones) pose a significant clinical challenge.
  • Extracorporeal shock wave lithotripsy (ESWL) has emerged as a key non-invasive treatment modality.
  • Advancements in ESWL technology are crucial for improving patient outcomes.

Purpose of the Study:

  • To develop and evaluate a novel device for extracorporeal shock wave lithotripsy.
  • To assess the efficacy of the device in fragmenting renal calculi.
  • To demonstrate the feasibility of using ultrasonic imaging for stone localization during ESWL.

Main Methods:

  • Construction of an ESWL device utilizing a spark gap for shock wave generation.
  • Incorporation of a water-filled ellipsoidal reflector to focus shock wave energy.

Related Experiment Videos

  • Utilizing a membrane for coupling the device to the subject and an ultrasonic transducer for stone visualization.
  • Conducting in vitro experiments and in vivo studies in dwarf pigs.

    • Main Results:

    • The developed ESWL device successfully generated focused shock waves.
    • Demonstrated fragmentation of renal calculi in both in vitro and in vivo settings.
    • Ultrasonic imaging proved effective for stone visualization during the procedure.

    Conclusions:

    • The novel ESWL device is effective in fragmenting renal calculi.
    • The technology shows promise for clinical application in treating kidney stones.
    • Combined use of shock wave generation and ultrasonic visualization enhances ESWL efficacy.