A dilator for enlarging an opening through a body tissue may include a shaft portion extending along a longitudinal axis of the dilator and including a proximal end and a distal end. The dilator may include a dilator tip positioned at the distal end of the shaft portion and including a proximal end, a distal end, and an outer surface extending between the proximal and distal ends of the dilator tip. The outer surface may include a first diameter at the proximal end of the dilator tip and a second diameter at the distal end of the dilator tip. The first diameter may be larger than the second diameter. The outer surface may include a concave taper between the first diameter and the second diameter. The dilator tip may include a plurality of projections and/or recesses extending away from the outer surface of the dilator tip.
