Machines good for hand pain???

Hey fellow artists, I have s huge career changing issues, I have bad trapped nerve in my cervical spine can’t be fixed, living in excruciating pain down my arm and hand, slight grip issues, I run a coil now at the moment which affects pain badly, need a new machine asap, something soft on my hand, i wanna barely know there’s a machine in my hand, only way I can work, can anyone suggest a top quality machine..???, preferable with adjustable stroke so I can use as all rounder but not essential. Need help to choose so any info u guys can give be awesome. Cheers