| 摘要 |
A swivel device (10) for connection to an ESU pencil (402), an exhaust port of an ESU pencil with an integrated smoke evacuation system or an exhaust port of an ESU pencil smoke evacuation shroud attachment includes a fixed member (14) attached to a rotatable member (22, 24). The rotatable member allows an electrical cord (28) and/or a vacuum tube to twist and coil freely during operation of an ESU pencil with or without the smoke evacuation system. |
