Patent ID: 7833217

Claim:
A spinal cannula for delivering a therapeutic agent to a spinal cord target, said spinal cannula having a distal end portion and a proximal end portion, said spinal cannula comprising: a deployable cannula member having a distal end portion, a proximal end portion, a middle portion extending between said distal and proximal end portions, and a first lumen extending between said distal and proximal end portions; a fluid delivery line operably connected to said proximal end portion of said deployable cannula member, said fluid delivery line including a second lumen in fluid communication with said first lumen of said deployable cannula member; a support cannula proximally located from said deployable cannula member and securely connected to a portion of said fluid delivery line; and a delivery cannula having a distal end portion, a proximal end portion, and a third lumen extending between said distal and proximal end portions for receiving said support cannula, said proximal end portion including a locking mechanism for releasably engaging said proximal end portion of said support cannula; wherein said middle portion of said deployable cannula member comprises a flattened, disc-like fixing member including oppositely disposed proximal and distal surfaces; wherein said distal end portion of said deployable cannula member further comprises a needle having a distal end and a proximal end, said proximal end being integrally formed with said distal surface of said fixing member.