A laser perforator is disclosed for perforating skin with a perforation to permit blood under a surface of the skin to flow out, the perforator in one embodiment having a laser light source for producing an output laser beam, and a mode distribution means for intercepting the output laser beam to control...http://www.google.de/patents/US5554153?utm_source=gb-gplus-sharePatent US5554153 - Laser skin perforator
