This is simply a hollow plastic tube that is attached to a suction machine by a flexible hose. In early-term abortions it is used to kill and dismember the baby, and then suck it out of the mother's uterus. In later abortions where other techniques are used to kill and dismember the baby, the cannula/suction machine is used to vacuum out the uterus and make certain that no parts of the baby are left behind.
1/3 actual size
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