Reverse engineering electronic circuit for medical device

I am interested in producing an equivalent product to the CMF OL1000 Bone Growth Stimulator. This is a combined magnetic field: Specifically, the field oscillates sinusoidally at a frequency of 76.6 Hertz with an AC component of 40.0 ± 8.0 μT, peak to peak, and a DC component of 20.0 ± 2.0 μT and is calibrated at a distance of 0.10 m normal to the projected plane of the coil.

Here is current product, please also see file attachment.
https://www.djoglobal.com/products/regeneration/ol1000