Devices for excising lesions from soft (breast) tissue for biopsy

摘要

The excisional biopsy device (100) contains a tubular member (110) having a window (120) at a distal tip (115); a cutting tool (125) attached near the distal tip of the tubular member which is configured to selectively bow out and to retract within the window; and a tissue collection device (260) externally attached to the tubular member. The tissue collection device collects tissue severed by the cutting tool as the biopsy device is rotated. In one embodiment, the device may contain an ultrasound transducer (270) disposed near the distal tip of the tubular member and away from the work element, so that the transducer sweeps a plane (280) within the tissue ahead of the work element as the tubular member rotates. The work element is selected from an abrasive device, a reciprocating cutting device, a bowing cutting device, an electrosurgical device, a laser device and a vibrating device. The operation of the work element may be controlled based upon information gathered from the ultrasound transducer.