Disclosed is a tissue modulation device comprising an upper surface and a lower surface, wherein the upper surface comprises a recessed region adjacent to a raised region, wherein the device is optically transparent in at least one of the recessed region or the raised region, wherein application of a...http://www.google.es/patents/US6223063?utm_source=gb-gplus-sharePatente US6223063 - Method and device for tissue modulation
