| abstract |
A localization device ( 10 ) comprising an outer needle cannula ( 11 ), an optional inner sleeve cannula ( 13 ) and an anchor stylet comprising a plurality of preformed superelastic alloy wires ( 12 ). Once the distal portions ( 14 ) of the wires ( 12 ) are deployed from the ends of the sleeve and needle cannulae, they function as curved barbs ( 15 ) projecting outward to anchor the device into tissue, an organ, or a foreign body. A slidable locking member ( 18 ), such as a pin vise, can be included over the outer needle cannula for securing the localization device against a template. |