So far, I have only seen about 3 LIPUS (Low Intensity Pulsed Ultrasound) devices that are commercially available. The one that I am looking at right now is made by Bioventus Global and it is called Exogen. The " EXOGEN User Guide ", on Bioventus Global website, states that their LIPUS device only has a lifespan of about 300 uses at 20 minutes per day. The only components that I can think of that would cause such a short lifespan are the batteries and transducer. Which components would likely be causing such a short lifespan ? If it is the transducer that is wearing out, is it normal for ultrasound transducers to wear out with only about 6000 minutes of usages ? If it is the transducer that is wearing out, which part of the transducer ? Thanks.