An amniotomy assembly includes an amniotomy device including a shaft having a rupture crown and a tubular sleeve disposed over at least a portion of the shaft and selectively lockable to the shaft. The rupture crown is disposed on a distal end portion of the shaft and includes a first set of leading bite wings formed on a distal end of the rupture crown and a second set of trailing bite wings formed on a side of the rupture crown adjacent to a side of the shaft. The tubular sleeve is movable relative to the rupture crown between a first position in which the rupture crown resides within the tubular sleeve and a second position in which the rupture crown extends from the tubular sleeve.
