Welcome to the forum! 
How very heartbreaking this is to read. I'm so sorry about all of this.
You certainly
should be enjoying your golden years, but this has thrown quite a wrench in things.
Don't lose hope tho, ok. I believe you're gonna end up in the hands of someone who WILL be able to do something about this.
So, your husband is still having this horrible headache even tho the unit has been removed?
I wonder if an MRI would reveal anything.
Does the headache dissipate if he drinks a strong caffeinated beverage and lie flat? Try this. If it helps then I would suspect it is some type of central spinal fluid leak. We have a CSF leak forum here you might want to take a peek at. Here's the link to get you there:
http://neurotalk.psychcentral.com/fo...aysprune=&f=78
Perhaps a puncture occurred during the SCS implantation. I've heard alot about CSF leaks. There are things that can be done about them.
Our beloved Mark56 will be along shortly to give some good input. He has a Boston Scientific. He also might be able to touch on the legal aspect of this. He knows alot about this stuff.
Please stick around and let us know how this unfolds.
Out of curiosity, I was wondering if the SCS helped with his leg pain?
I'm glad you found us. The support here never ends.
Caring,
Rae