A biopsy needle includes an outer cannula and an inner cannula. The inner cannula includes a distal end and a proximal end, the outer cannula being shaped and dimensioned to closely circumscribe the inner cannula for movement relative thereto. The inner cannula further includes a sample recess at its distal end, the sample recess including a dual cavity recess, wherein a first cavity has a parabolic shape and the second cavity has a circular shape.
1. A biopsy needle, comprising:
an outer cannula;
an inner cannula including a distal end and a proximal end, the outer cannula being shaped and dimensioned to closely circumscribe the inner cannula for movement relative thereto;
the inner cannula further including a sample recess at the distal end of the inner cannula, the sample recess including a forward wall and a rear ward wall, the forward wall including multiple concave surfaces composed of a first cavity intersecting with a second cavity wherein the first cavity has a first shape and the second cavity has a second shape;
wherein the first shape is different from the second shape, the first cavity having a parabolic shape and the second cavity having a circular shape.