Patent ID: 6036657
Filing Date: 2000-03-14
Classification: A61B

Abstract:
A biopsy apparatus which comprises:a coring cannula having a proximal portion and a distal portion which defines a tissue receiving cavity in communication with an opening, the coring cannula including a sharpened cutting edge disposed at the distal portion;an elongated penetrating member having a plurality of discrete planar cutting surfaces each having a sharpened cutting edge formed thereon extending from a distal end of the elongated penetrating member, the elongated penetrating member being disposed within the coring cannula such that the cutting edges of the plurality of the discrete planar cutting surfaces extend beyond a distal end of the distal portion of the coring cannula; anda tissue cutting member having a cutting portion which moves transverse to the coring cannula in proximity to the opening to effect severing of a tissue sample disposed in the tissue receiving cavity.