Patent ID: 8382714

Claim:
A rail-guided epidural-spinal needle, comprising: an epidural needle having a lumen formed therein extending along an axis of the epidural needle, the epidural needle including a base and a needle shaft connected to the base, the needle shaft having a groove that is formed on an outer surface of the needle shaft and extends along an axis of the needle shaft, the groove being separate from the lumen, the base having an elevated spinal needle inlet disposed thereon, the spinal needle inlet having a conduit formed therein, the conduit being of an acute angle with the groove in a side view of the epidural needle, and being in alignment with the groove in a top view of the epidural needle; and a spinal needle having a tip, such that, when the spinal needle is inserted into the conduit of the spinal needle inlet and pushed forward, the tip thereof reaches the groove and slides along the groove.