If you want help, I can get Marvin Weinberger (founder of patented tools company InnovationFactory.com) on a call - I won't charge extra, since I'll just be facilitating the conversation. Let me know if you want me to set that up.
In terms of prototyping, it depends on the product. If you let me know on the call I'll follow up with resources. For example, if you need a simple, small prototype, you might be able to build it yourself in a local facility (ie: NextFab in Philadelphia). If it's more advanced, there are prototyping resources out there, but they vary based on the type of product.