Patent ID: 8812114

Claim:
A lead set for a nerve stimulator having a one-way fit connection site, comprising: a one-way fit plastic connector configured to mate with the one-way fit connection site; a transcutaneous electrode; a first lead extending from the connector and terminating in the transcutaneous electrode; an attachment member for removably receiving a percutaneous needle electrode; a second lead extending from the connector and terminating in the attachment member; a fuse disposed entirely in the connector, said fuse including a functional status that is changeable during delivery of therapy after a pre-determined time period from an operational condition to a non-operational condition wherein the non-operational condition does not prevent continued delivery of said therapy; a third lead disposed entirely in the connector and connected to the fuse; and a fourth lead disposed entirely in the connector and connected to the fuse; wherein the first lead and the second lead are electrically isolated from one another and physically separated at the transcutaneous electrode and the attachment member; and wherein the fuse and the third and fourth leads are electrically isolated from both the first lead and the second lead; and wherein the non-operational condition of the fuse is configured to prevent re-use of the lead set after delivery of the initial therapy.