Method for coaxial breast biopsy

Surgery – Diagnostic testing – Sampling nonliquid body material

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A61B 500

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active

06080114&

ABSTRACT:
A device and method for coaxial breast biopsy utilizing a rigid rod. The suspected cancer is pierced by a rigid rod which stabilizes the cancer in the path of a cutting cannula and provides mechanical guidance for the cannula as it incises a cylinder of tissue centered on the rod. The rigid rod has retractable anchor hooks and a spiked collar to slide over the rod. The cancer is bracketed by the anchor hooks distally and the spiked collar proximally to stabilize it on the rod and mark its position for excision by the cannula. Associated tools enable insertion and positioning of the rod with anchor hooks and the spiked collar while the cutting cannula employs an internally situated snare wire to sever the specimen from the breast once it has been incised by the cannula. A reel mechanism or hemostat is used to tighten the snare wire. The location of the biopsy within the breast is marked with a spring clip and clip injector in case further therapy is required. An incision from the skin down to the location of the spiked collar is made with a power scalpel with an oscillating circular blade. A stabilizing device is utilized to facilitate the initial incision in the breast and subsequent passage of the cutting cannula.

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