To break the bag of waters, many doctors use a sterile amniohook – a special instrument that resembles a long crotchet hook. Alternate tools include:
- The amnioglove – a small hook on the end of a finger of a sterile glove
- The amniocot – a one-finger “glove” that slides over a finger of the doctor’s sterile glove.
- A finger – It is sometimes easy just to poke a finger into the amniotic sac if the waters are bulging through the opening of the cervix.