A device for extending a lead according to an embodiment of the present disclosure includes a body having proximal and distal ends, the distal end having first and second apertures, the body having an inner lumen, the first and second apertures extending from an outside of the body to the inner lumen; a filamentous element extending out of the first aperture and into the second aperture to form a filament loop extending from the body; a tightening mechanism configured to twist the filamentous element to compress a lead body between the filament loop and the body; and a tether coupled to body and configured to extend further proximally than a proximal-most end of the lead body when the lead body is compressed between the filament loop and body, the tether further configured to transfer at least a portion of a tension force applied to the tether to the lead body.