A surgical instrument includes a housing (20), an energizable member (220), a proximal hub (230), and a deployment mechanism (80). The energizable member (220) is movable between a storage position and a deployed position. The proximal hub (230) is disposed within the housing (20), coupled to the energizable member (220), and translatable relative to the housing along a translation axis to deploy the energizable member. The deployment mechanism (80) is configured to selectively translate the proximal hub (230) and includes an actuator (84) movable along a surface of the housing that extends in non-parallel orientation relative to the translation axis. The actuator (84) is operably coupled to the proximal hub (230) and is movable along the surface of the housing in non-parallel orientation relative to the translation axis between a proximal position and a distal position to translate the proximal hub along the translation axis and move the energizable member (220) between the storage position and the deployed position.
