In therapies of various cerebrospinal diseases, invasive needles are used to deliver drugs or do minor surgical operations. An alternative would be to use micro-robots capable of minimally invasive interventions by traveling inside the body of the patient.
In this patent application (US Patent App No: US 20130060130 A1 ), researchers from Chonnam National University in Korea propose injecting a micro-robot between the second and third vertebra. The injected micro-robot is then moved to the target diseased region. The movement of the micro-robot is followed through X-ray imaging during the operation. Once in the target region, the micro-robot delivers the drug for treating the disease.