| 摘要 |
An air suctioning and filtering device for use in an surgery plume evacuation system comprises a suction inlet, a filter connected in fluid communication with the suction inlet, a connector pipe connected in fluid communication with the filter, and a vacuum fan connected in fluid communication with the connector pipe to suction air into the suction inlet, through the filter, and through the connector pipe. An air by-pass inlet having a shutter valve mounted thereon permits air to be suctioned to the source of suction without ingressing into the suction inlet, when the shutter valve is in a standby position. A much smaller amount of air is suctioned through the auction inlet. In a full suctioning position, with the shutter valve closed over the air by-pass inlet, all of the air is suctioned into the suction inlet from an electrosurgical pencil.
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