An end effector of an electrosurgical device may include one or more electrodes and a movable electrode scraper having a plurality of features in mechanical communication with a surface of the one or more electrodes and configured to move across the surface of the electrodes thereby removing biological debris adhering to the surface of the electrodes. The electrosurgical device may include a diverter in mechanical communication with the one or more electrodes. The scraper may also be configured to move across the surface of the diverter. The scraper may be operated by the action of an extendable mechanism in mechanical communication with a shaft of the electrosurgical device. An end effector of an electrosurgical device may include one or more electrodes and a movable electrode sleeve configured to movably cover the one or more electrodes.

A grip assembly for an embolic delivery device is described, where said grip assembly includes an integral wiping system utilizing one or more wipers. The grip assembly is constructed and arranged to allow an embolic delivery device to be inserted into the grip quickly and easily, without shifting undue attention away from the patient to the device. The wiper or wipers prevent any fluids or debris that may be present on a proximal end of the embolic delivery device from entering the interior of the grip assembly, thereby preserving a clean environment for making solid electrical connections between contacts in the grip assembly and corresponding contacts on the embolic delivery device.