DEVICE FOR PROVIDING A FLOW OF PLASMA

摘要

The present invention provides a hand-held device 10 for providing a flow of plasma for treatment of a treatment region. The device comprises a plasma cell 16 defining a volume in which gas passing through a cell inlet from a gas source 22 can be energised to form a plasma and discharged through a cell outlet for treatment of a treatment region by said generated plasma, and a plurality of electrodes for receiving electrical power for energising gas in the cell to form a plasma, wherein the device comprises a valve arrangement 32 operable in an open condition to allow the discharge of plasma from the device to the treatment region and in a closed condition to resist the passage of ambient contaminants into the device in the absence of gas flow through the device from the gas source.