An abrasion device and method for delivery of substances into the skin using a microabrader for delivering a substance into the skin are disclosed. An abrasion device with a cover is also disclosed. Such devices and methods can be effectively used to deliver bioactive substances into skin....http://www.google.de/patents/US7316665?utm_source=gb-gplus-sharePatent US7316665 - Method and device for the delivery of a substance including a covering
