English to Portuguese Medical Medical: Instruments

Olá, estou traduzindo esse texto de um equipamento médico e me deparei com esse termo. Segue abaixo mais contexto.

Cable Release Grip
The connectors used on the cable all have
similar function. The connectors feature an
auto-latching mating action that provides
audible, visible, and tactile confirmation that
the connections are fully engaged.
(....)

Only the rotating collars of the reusable cable
should be held when disconnecting the
antenna or when disconnecting the cable from
the generator. When disconnecting, gently
rotate the collars an 1/8 turn in the direction of
the arrow graphic, avoiding any bending.
Never pull the cable prior to disconnecting the
coupling collar.