Akademik

lock
A device for holding or closing.
- English l. articulation of the blades of obstetrical forceps consisting of a socket on the shank at the junction with the handle in a similar socket on the other shank; used in Simpson forceps.
- sliding l. a slot on one shank of obstetrical forceps (as in Kjelland forceps) that allows the shanks to move forward and backward independently.

Medical dictionary. 2011.