Study to Evaluate the Safety and Preliminary Efficacy of IDCT, a Treatment for Symptomatic Lumbar Intervertebral Disc Degeneration

Inclusion Criteria: The subject must have: 1. Diagnosis of early to moderate degenerative disc disease (DDD), Modified Pfirrmann Grade 3-7. 2. Chronic low-back pain for at least 6 months prior to screening; unresponsive to at least 3 months of conservative care. 3. Low-back pain of 40 to 90 mm on the VAS and ODI score of 30 to 90. Exclusion Criteria: The subject is excluded if he/she has: 1. Symptomatic involvement of more than one lumbar disc. 2. Other persistent pain/nerve issues including, for example, radiculopathy, leg pain, cauda equine syndrome, etc. 3. Fracture of the spine, previous lumbar spine surgery or previous treatment of the target disc. 4. Evidence of dynamic instability on lumbar flexion-extension radiographs. 5. Grade 2 or higher spondylolisthesis at the target disc, lumbar spondylitis or other undifferentiated spondyloarthropathy, or Type III Modic changes around the target disc. 6. Clinical suspicion of a full thickness annular tear at the target disc or other abnormal disc morphology. 7. Clinical suspicion of facet pain as primary pain generator. 8. Subjects who test positive for communicable disease, have significant systemic disease, or are prone to infection. 9. Patients who are deemed unsuitable for clinical study participation by the investigator.