The apparatus is a hand held device which contains a laser light source and...http://www.google.com/patents/US5074861?utm_source=gb-gplus-sharePatent US5074861 - Medical laser device and methodAdvanced Patent SearchPublication numberUS5074861 APublication typeGrantApplication numberUS 07/539,383Publication dateDec 24, 1991Filing dateJun 15, 1990Priority dateMay 23, 1988Fee statusLapsedPublication