A system for driving an helical anchor into biological tissue, the helical anchor including a substantially helical anchor body defining anchor body proximal and distal ends (716 and 714) and an anchor body passageway extending therethrough between the anchor body proximal and distal ends (716 and 714), the anchor body being delimited inside a generally cylindrical shape, an anchor protrusion extending radially from the anchor body at the anchor body proximal end, the system comprising: - substantially elongated inner and an outer drivers (722 and 724) concentric relative to each other and defining a driver passageway therebetween, the helical anchor being mountable between the inner and outer drivers (722 and 724) in the driver passageway, the inner driver defining longitudinally opposed inner driver proximal and distal ends (728 and 730) and the outer driver defining longitudinally opposed outer driver proximal and distal ends (732 and 734), the inner and outer drivers (722 and 724) being axially rotatable relative to each other and longitudinally substantially fixed relative to each other; - a first driver selected from the inner and outer drivers (722 and 724) defining a first driver surface facing the driver passageway and provided with at least one protrusion protruding in the driver passageway and configured for engaging the helical anchor when the helical anchor is mounted in the driver passageway and preventing pure translation of the helical anchor along the first driver while allowing helical movements of the helical anchor relative to the first driver; - a second driver selected from the inner and outer drivers (722 and 724) and differing from the first driver including a driving section extending from a second driver distal end towards a second driver proximal end, the driving section being provided with a slot extending therealong from the second driver distal end towards the second driver proximal end, the slot being configured and sized for receiving the anchor protrusion thereinto and allowing movements of the anchor protrusion along the slot; and - an actuator operatively coupled to the inner and outer drivers (722 and 724) at the inner and outer driver proximal ends (728 and 732) for selectively rotating the inner and outer drivers (722 and 724)relatively to each other. - substantially elongated inner and an outer drivers (722 and 724) concentric relative to each other and defining a driver passageway therebetween, the helical anchor being mountable between the inner and outer drivers (722 and 724) in the driver passageway, the inner driver defining longitudinally opposed inner driver proximal and distal ends (728 and 730) and the outer driver defining longitudinally opposed outer driver proximal and distal ends (732 and 734), the inner and outer drivers (722 and 724) being axially rotatable relative to each other and longitudinally substantially fixed relative to each other; - a first driver selected from the inner and outer drivers (722 and 724) defining a first driver surface facing the driver passageway and provided with at least one protrusion protruding in the driver passageway and configured for engaging the helical anchor when the helical anchor is mounted in the driver passageway and preventing pure translation of the helical anchor along the first driver while allowing helical movements of the helical anchor relative to the first driver; - a second driver selected from the inner and outer drivers (722 and 724) and differing from the first driver including a driving section extending from a second driver distal end towards a second driver proximal end, the driving section being provided with a slot extending therealong from the second driver distal end towards the second driver proximal end, the slot being configured and sized for receiving the anchor protrusion thereinto and allowing movements of the anchor protrusion along the slot; and - an actuator operatively coupled to the inner and outer drivers (722 and 724) at the inner and outer driver proximal ends (728 and 732) for selectively rotating the inner and outer drivers (722 and 724)relatively to each other.