Ok more serious now.
So you are hoping to promote healing /growth by bombarding tissue with ultrasonic sound waves?
The medical profession use ultra sound to scan soft tissue, Ultrasound Scan, as on pregnant women, that must be proved to be harmless and not promote anything.
Next it is used at high energy levels to break up gall stones or calcium nodules, I think that works like hitting a stone with a hammer. The stone shatters, but hit a tyre it has no effect, well maybe just vibrates it a bit.
I’ll keep reading up on this.