Evaluation of Conventional and Long Pulse Widths During a Temporary Spinal Cord Stimulation Trial

The proposed study is a prospective, single-center, two arm, randomized, crossover design to
be conducted at The Ohio Pain Clinic. The study will enroll up to 15 subjects in order to
include up to 10 subjects in the study. Subjects selected to participate in the trial have
back and/or leg pain, have been evaluated as a candidate for SCS and have agreed to undergo a
temporary SCS trial using the Algostim system with percutaneous leads. Each subject will be
followed during the trial period of approximately 7 days.

The study will end when the last subject has completed the trial period. exited. The expected
enrollment period for this study is approximately three months. After exit from the clinical
study, subjects will continue to be followed by their physician per usual care. All device
and procedure-related AEs will be collected and reported per the study protocol.

Inclusion Criteria:

- Subject is eligible for SCS therapy according to the Algovita SCS system Indications
for Use statement

- Study candidate is undergoing a SCS trial using Nuvectra Algostim system

- Subject signed a valid, Institutional Review Board (IRB)-approved informed consent
form.

- Subject is 18 years of age or older when written informed consent is obtained

Exclusion Criteria:

- Subject is contraindicated for an Algovita SCS system

- Subject has a cognitive impairment or exhibits any characteristic, that would limit
the study candidate's ability to assess pain relief or complete study assessments

- Subject has a life expectancy of less than 2 years

- Subject is participating in another clinical study that would confound data analysis

- Subject has a coexisting pain condition that might confound pain ratings

- Subject has a significant psychiatric disorder