Brea-based healthcare device maker Acacia Inc. has agreed to sell its neonatal feeding unit to Medela Inc., a global healthcare company that specializes in breastfeeding devices and medical suction equipment.

Terms of the deal were undisclosed.

Medela, which has its U.S. headquarters in McHenry, Ill., operates through 13 subsidiaries around the world, including units in France, Japan and Switzerland, where it was founded in 1961.

The acquisition of Acacia’s neonatal products segment is expected to help Medela expand its neonatal intensive care unit services, which are aimed at providing human milk to babies at risk.

Acacia Chief Executive Dan Hyun will join Medela as a vice president.

Acacia has an estimated $12 million in revenues and 25 employees. Medela has about 600 employees.