Patent ID: 6511486
Filing Date: 2003-01-28
Classification: A61B

Abstract:
A dermabrasion hand tool for abrasively removing a skin surface by means of an abrasive stream projected onto the skin surface to be removed, the abrasive stream after projection onto said skin surface becoming a used abrasive stream, said hand tool comprising:an elongated manipulative body having a longitudinal axis and first and second opposite ends; an operative head through which the abrasive stream is projected onto the skin surface to be removed and through which the removed skin surface and used abrasive stream are evacuated, said operative head being removably mounted onto the first end of the manipulative body; and a supply channel for supplying the abrasive stream to the operative head from a supply stream source, and an evacuating channel for evacuating the removed skin surface and used abrasive stream from the operative head to an evacuating means, both of said channels extending within and along the manipulative body and each having first and second extremities located respectively at the first and second ends of the manipulative body; wherein the operative head comprises: a projection head for projecting the abrasive stream orthogonally to the skin surface to be removed, the projection head further comprising: a base connected to the first end of the manipulative body; a tip opposite to the base and through which the abrasive stream is projected; a peripheral outer surface extending between the base and the tip; and a feeding channel extending inside the projection head from the base to the tip, the feeding channel having a first extremity in communication with the first extremity of the supply channel and a second extremity located adjacent to the tip of the projection head through which the abrasive stream is projected; an evacuation chamber operatively connected to the evacuating channel for facilitating evacuation of the removed skin surface and used abrasive stream into said evacuating channel; and rotation-inducing, means for giving a rotational pattern to the abrasive stream projected from the operative head, the rotation-inducting means comprising: a spiral-shaped groove extending coaxially about a portion of the peripheral outer surface of the projection head, said spiral-shaped groove having a first extremity in communication with the first extremity of the evacuating channel and a second extremity located on the peripheral outer surface of the projection head between the base and the tip, said spiral-shaped groove cooperating with the evacuation chamber to evacuate the removed skin surface and used abrasive stream from the evacuation chamber into the evacuating channel.