Patent ID: 9700287
Date: 2017-07-11
CPC Classifications: A61B

Claim:
1. A full-core biopsy needle, comprising: an outer tubular component having a body portion, a transition portion, and a tip portion, said body portion having a substantially constant inner and outer diameter, said transition portion curving inward from said body portion inner and outer diameter and forming an external rounded surface and an internal boss, said tip portion having a constant inner diameter that is smaller than said body portion inner diameter and an outer surface that tapers so that said tip has a first thickness adjacent to the transition portion and a distal edge; and a cannula within of said outer component and having a proximal portion and a distal portion, said proximal portion having substantially constant inner and outer diameters, said distal portion having at least a first and second finger separated by a substantially elliptical gap, wherein said component and said cannula have a first relative position with said fingers proximal of said boss, and said cannula and said component being adapted to be moved with respect to each other into a second relative position, said second relative position being the limit of possible distal location of said cannula with respect to said component and being a position in which at least said first and second fingers are deflected inward by said boss, wherein in said second relative position at least a portion of said first and second fingers point toward each other but do not close the entirety of said gap.