I agree with Darrel as far as the pump is concerned - it sounds the best you'll get.
As far as your medication in concerned I am puzzled with your taking Lyrica. The 'Drug Bible' in the Uk BNF says: -
PREGABALIN
Indications peripheral and central neuropathic pain; adjunctive therapy for partial seizures with or without secondary generalisation; generalised anxiety disorder
Nothing is mentioned about controlling spasms. There is also the note; -
The Scottish Medicines Consortium has advised (August 2006) that LyricaŽ is not recommended for the treatment of peripheral neuropathic pain
which seems to limit its use.
I have been on gabapentin for nueropathic pain for a while and it is very effective. Just interested