| 摘要 |
<p>The present invention relates to a microdermabrasion device for skin treatment (1) comprising: a handset housing a nozzle head (5) and having handle means for manipulating the handset; a nozzle (16) in the nozzle head for supplying a stream of micro-particulate material to the skin surface in use of the device; a headspace around the nozzle, separating the nozzle from an outlet port in the handset which contacts the skin in use of the device; means for pulling a vacuum in the headspace; means for withdrawing debris from the headspace and away from the handset, the nozzle communicating at its downstream end with the headspace and at its upstream end with a flow line having at least two limbs, a first limb communicating in use of the device with the atmosphere, and a second limb communicating in use of the device with a reservoir of micro-particulate material, the first and second limbs being arranged with respect to each other such that the pulling of a vacuum in the headspace when the outlet port is positioned against the skin surface causes an airflow from the atmosphere to the headspace through the first limb of the flow line, and causes material from the reservoir to be drawn into the flow line by means of a venturi effect at the junction of the first and second limbs of the flow line.</p> |
