A lesion localization and marking wire and needle assembly for marking non-palpable lesions within the body. A marking device having a helically wound coil of wire attached to an end of the shaft which is insertable into the body through a needle or cannula for rotatingly anchoring the marking device...http://www.google.ca/patents/US5197482?utm_source=gb-gplus-sharePatent US5197482 - Helical-tipped lesion localization needle device and method of using the same
