| 摘要 |
<p>A swivel device for connection to an ESU pencil, 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 attached to a rotating member. The rotating member allows an electrical cord and/or vacuum tube to twist and coil freely during operation of an ESU pencil with or without the smoke evacuation system.</p> |
