An apparatus for cooling a skin surface includes an RF device that has an RF electrode with dielectric and conductive portions. The RF device is configured to be coupled to an RF energy source. A cooling member is coupled to the RF device. A memory is coupled to the RF device. The memory is configured...http://www.google.com/patents/US7115123?utm_source=gb-gplus-sharePatent US7115123 - Handpiece with electrode and non-volatile memory