This invention is an improved tissue-localizing device with an electrically energized locator element for fixedly yet removably marking a volume of tissue containing a suspect region for excision. The electrical energizing of the locator element facilitates the penetration of the locator element in to...http://www.google.es/patents/US7468042?utm_source=gb-gplus-sharePatente US7468042 - Localization element with energized tip
