Is the "routine" something you think could be replicated with just a manual pump?
The patent asserts that the key to the device is triggering a vibration once the pump pressure has gotten the penis to a "tensioning length".
At a skim, it looks like the device is an automatic pump that starts at a low pressure
When it detects the chamber is filled, it (strongly) vibrates for 10 seconds, then backs off the pressure. The vibration, combined with the vacuum, is intended to cause micro-tears in the penile tissue
It then repeats that process, slightly increasing the vacuum each cycle, for up to 40 cycles.
One note from skimming the patent that jumped out at me is that the device is only claimed to produce 25% of its length gains permanently; the rest are lost, long term. (Page 19, paragraph 2)
Relinking the patent, for anyone who wants another look:
https://ppubs.u spto.gov/dirsea … oadPdf/11517467