The Dornier Lithotripter U 30: first clinical experience

Area of Science:

• Urology
• Medical Devices
• Nephrology

Background:

• The Dornier Lithotripter U 30, an electromagnetic shockwave source with integrated ultrasound, has been utilized since 1993.
• This system facilitates stone location via fluoroscopy or ultrasound and features an endourologic table with an X-ray unit.

Purpose of the Study:

• To evaluate the effectiveness and outcomes of the Dornier Lithotripter U 30 for treating renal and ureteral stones.
• To assess the need for auxiliary measures, treatment parameters, and complication rates associated with SWL using this device.

Main Methods:

• A retrospective analysis of 1092 stones treated in 1533 sessions using the Dornier Lithotripter U 30 between August 1993 and December 1994.
• Data collected included stone location, pre- and post-SWL auxiliary procedures, shockwave parameters, treatment duration, medication use, and patient outcomes.

Main Results:

• Complete stone disintegration was achieved in 94% of cases. At 3-month follow-up, 85.9% of patients were stone-free.
• Common stone locations included the calix (45.5%) and renal pelvis (39%). Auxiliary measures were required pre-SWL in 16% and post-SWL in 9.7% of patients.
• Minor complications included perirenal hematomas (0.6%) and post-treatment colic pain (16.1%).

Conclusions:

• The Dornier Lithotripter U 30 demonstrates high efficacy for SWL of both radiolucent and radiopaque renal and ureteral stones.
• The device functions as a comprehensive endourologic workstation, offering versatile treatment capabilities.
• SWL with the Dornier Lithotripter U 30 is a safe and effective treatment option for urinary tract stones.