An apparatus for inserting and reinserting a medical device in a patient comprising a medical device such as an intrathecal catheter, electrical lead and lead wire, a sheath for being inserted into the patient using a hollow medical device so that once the sheath is inserted subcutaneously into the patient, the sheath receives the medical device and the medical device can be positioned in the patient and, a separation portion carried by the sheath so that the sheath receives the medical device. The sheath can be removed from around the medical device by using the separation portion so that the medical device can be inserted in the patient without having to remove the medical device completely from the patient thus eliminating the requirement for a second incision.
