An implantable therapy lead is disclosed herein. In one embodiment, the therapy lead includes an elongated lead body and a suture sleeve. The elongated lead body has a proximal region and a distal region opposite the proximal region. The suture sleeve is supported on the lead body and has a proximal end, a distal end opposite the proximal end, an outer surface extending between the proximal end and distal end, and an inner surface radially inward of the outer surface and extending between the proximal end and distal end. The inner surface defines a lumen through which the elongated lead body extends. A helical structure helically extends about a longitudinal center axis of the lumen and along the inner surface.
