Patent ID: 7261712

Claim:
A device for localizing a target tissue mass containing a lesion with a transverse dimension in the body of a patient, comprising: an elongate shaft having a proximal section, a distal section and a distal end; a first plurality of locator wires disposed in the elongated shaft and movable between a retracted position in which they are contained within the elongate shaft, and a deployed position in which they initially exit the elongated shaft toward the distal end and extend radially from the elongate shaft at a location proximal to the distal end to a first radial distance and in which they define a first perimeter having a first transverse dimension; and a second plurality of locator wires disposed in the elongate shaft proximal and movable between a retracted position in which they are contained within the elongate shaft, and a deployed position in which they initially exit the elongated shaft toward the proximal end and extend radially from the elongate shaft at a location proximal to the distal end to a second radial distance and in which they define a second perimeter having a second transverse dimension which is smaller than the first transverse dimension of the first perimeter.