StimRouter™ for Pain Management in Post-stroke Shoulder Pain

Inclusion Criteria: * Male or female age ≥18 years and confirmed diagnosis of stroke * Competent to provide consent and comply with study requirements * Minimum 3 months of severe chronic focal post-stroke shoulder pain * Stable regimen of pain medications for \>4 weeks prior to implant and willing to maintain equivalent dosage throughout the study * A mean score of \> 4 on the Brief Pain Inventory short form, question 3 (BPI-SF3) * Capable and willing to follow all study-related procedures * Able to tolerate surface stimulation as demonstrated by motor level response at shoulder Exclusion Criteria: * Patients who decline to provide written consent or to attend follow-up visits * Shoulder pathology (e.g. rotator cuff tear, frozen shoulder etc) at target limb * Evidence of a primary central or regional pain pattern inclusive of shoulder * Diagnosed/confirmed shoulder dysfunction * Botox or other neurolytic agent injections in last 3 months * Any confounding neurologic conditions affecting the upper limb * Evidence or history of skin infections * History of adverse reactions to local anesthetics (e.g. lidocaine) or adhesives * Patients who have an active systemic infection or are immunocompromised * Patients who are pregnant, intend to become pregnant, are breastfeeding or of child-bearing potential and not practicing a medically-approved method of birth control * Currently requiring or likely to require Magnetic Resonance Imaging (MRI) within the MRI exclusion zone defined …