A system for driving an helical anchor into biological tissue including concentric inner and outer drivers defining a driver passageway therebetween for mounting the helical anchor thereinto, the inner and outer drivers being axially rotatable and longitudinally fixed relative to each other. The inner driver includes a protrusion protruding in the driver passageway and configured for engaging the helical anchor to prevent pure translation of the anchor along the inner driver while allowing helical movements of the helical anchor relative to the inner driver. The outer driver is includes a slot extending therealong from an outer driver distal end towards an outer driver proximal end, the slot receiving the anchor protrusion thereinto and allowing movements of the anchor protrusion therealong. An actuator selectively rotates the inner and outer driver relatively to each other.
