Patent ID: 8515558

Claim:
An implantable medical electrical lead, which comprises: a) an elongate lead body comprising a lead lumen extending from a proximal lead region to a distal lead region, wherein the proximal lead region is connectable to a medical device and the distal lead region has a distal lead opening of the lead lumen; b) an anchor housing connected to the distal lead region, the anchor housing comprising a proximal housing portion extending along a first longitudinal axis to a distal housing portion, wherein a housing channel in the anchor housing extends from a proximal channel portion having a proximal channel opening of a first diameter to a distal channel portion having a second diameter less than the first diameter, the proximal channel opening being in communication with the distal lead opening and the lead lumen; c) a tine positioned inside the housing channel and comprising a proximal tine portion extending to a distal tine portion terminating at a tine point, wherein the proximal tine portion comprises a tine lumen that is in open communication with the distal channel portion of the second diameter leading to the proximal channel opening of the first, greater diameter; d) wherein the tine is rotatable in a first direction along a plane perpendicular to the first longitudinal axis of the housing and out an opening in the housing to thereby deploy the tine point; and e) wherein the tine is rotatable in a second, opposite direction along the plane back into the housing opening to thereby retract the tine point.