Patent ID: 7857820

Claim:
A sheath assembly for a deep brain access device, the sheath assembly comprising: at least one sheath configured to be guided to a target location using the access device, the sheath including: a first sheath portion; and a separate second sheath portion, the first and second sheath portions coupled to a handle at one end and rotatable with respect to each other such that, when the handle is rotated into a first position the first and second sheath portions together define a central lumen, and when the handle is rotated to a second position, a longitudinal sheath opening is exposed; wherein the central lumen is sized and shaped to accept at least a portion of an electrode therein, the central lumen configured to guide the electrode to the target location, and wherein the longitudinal sheath opening is selectively openable and configured to allow at least the portion of the electrode to pass therethrough; and a securing base configured to secure the electrode during removal of the at least one sheath.