Interview
Q: What is the significance of extracorporeal shockwave lithotripters in treating stones, and where are they heading?
Jia: Extracorporeal shockwave lithotripsy is a treatment in which shockwaves generated outside the body are focused on a stone inside the body to break it up, so that the fragments can then be passed.
ESWL has been in use for 40 years. Lithotripters have progressed from the original electrohydraulic shockwave sources to single-layer piezoelectric, then electromagnetic, and now Richard Wolf has developed double-layer piezoelectric technology – each generation an improvement. Dual X-ray and ultrasound localization has also evolved into automatic tracking localization.
With the rise of endourology and a lack of interest in ESWL among younger urologists, the position of ESWL is increasingly being challenged. In my view, ESWL can clear more than 90% of urinary stones, and it is the treatment of choice for urinary stones.
Q: Please tell us about the performance and technical advantages of the Richard Wolf extracorporeal lithotripter.
Jia: Richard Wolf has more than 30 years of research and development experience with lithotripters and keeps improving and innovating. Its lithotripters are widely used in Europe and use double-layer piezoceramic technology.
The main advantages of the Richard Wolf lithotripter are:
A penetration depth of 170 mm, so even obese patients can be treated – other lithotripters reach a maximum of only 150 mm.
Automatic tracking localization, which makes manual adjustment easier and saves treatment time.
The ultrasound probe is integrated in the shockwave source in an inline design. On the same axis, it can move axially and rotate (± 90°).
4. Focus parameters are adjusted independently, and different focal sizes can be selected as needed during treatment, greatly reducing side effects and complications.
5. A simple modular design in five parts – main unit, control system, table, X-ray system and ultrasound system – that is easy to install and highly mobile.
About the expert
