The actuator that there is medical device control handle distal component to be adjusted passes through drawing component or line. The actuator includes user interface rotary turnplate, pawl band arrow washer and spool, is rotatably connected to arrow its rotation for having sent dial of washer of pawl band in dial and is sent to spool. There is spool an axis body and drum end can be wound into manipulation to a proximal end pull head component or adjust the distal component. The rotary motion of locking gasket is restricted, to prevent from excessively rotating and be broken towing component. Airtight petite persons washer is mounted on axis body, to help to generate spool into the actuator assembly of friction with one or more components in actuator to compressive load.
