BTL is a medical equipment maker founded in 1993, working across rehabilitation and orthopaedics, cardiology and aesthetics. Its user manuals name BTL Industries Ltd. of Stevenage, UK, as the legal manufacturer, and its Czech site describes R&D in Prague and production in Benešov.
BTL says it has offices in more than 90 countries and more than 4,300 employees. Its physiotherapy shockwave range is the focused BTL-6000 FSWT and the radial BTL-6000 RSWT, marketed as BTL Focused Shockwave and BTL Radial Shockwave.
BTL Industries, Inc. of Marlborough, Massachusetts, appears on BTL's US aesthetics site, but we found no US page or US office for its physiotherapy shockwave devices.