Importance

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Abstract

A surgical core biopsy apparatus, having a hollow elongated member with an axis and a leading end, a sharpened edge at a portion of the leading end for cutting tissue along the axis, an actuator, and a cutting edge, linked to the actuator, being movable along a path including a transverse component to the axis, effective for severing tissue along an the path. The path is preferably an arcuate path, the cutting device being pivoted about an axis transverse to the axis of said hollow elongated member at said leading end. The actuator preferably acts by way of a compression force transmitted along the axis by a compression member, from a handle portion to the cutting edge. The elongated member is preferably a tube having two or more lumens, a first large centrally located lumen for accommodating a tissue core sample, and at least one other eccentrically located rectangular cross section lumen containing the compression member. The biopsy apparatus may be used, for example, to obtain a percutaneous excision breast biopsy from a tumor whose location is marked with a radiopaque guide wire.

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First Claim