Medical devices, namely devices for treating stress urinary incontinence; devices for treating the female urinary tract; devices for modifying the geometry of the urinary tract; devices for modifying the geometry of the female urinary tract; devices for introducing fascial anchors into human anatomy; dissection catheters including balloons to facilitate tissue dissection; adjustable anchors configured to clamp onto tethers or sutures; devices for locking and unlocking adjustable anchors onto tethers or sutures; anchors for securement into a vaginal canal; anchors configured to be locked and unlocked to sutures or tethers within a vaginal canal