Patent ID: 6383145
Filing Date: 2002-05-07
Classification: A61B

Abstract:
A biopsy device comprising:a retractable stylet having a tip containing a plurality of blades and a central passage for receiving a localization needle; a cannula connected to a drive mechanism, said cannula having a shaft with a cutting ring opposite said drive mechanism and a plurality of disk blades mounted within said cannula; said drive mechanism for simultaneously rotating said cannula and moving said cannula in a direction parallel to a longitudinal axis of said cannula; a garrote with a first end, a second end, and a cutting surface for performing a cut transverse to said longitudinal axis of said cannula, said garrote mounted adjacent to said cutting ring of said cannula; a trigger for deploying said garrote, said trigger including a locking mechanism for preventing deployment of said garrote prior to movement of said cannula a predetermined distance; and a localization needle having a guide wire mounted within said needle.