Patent ID: 8343072
Filing Date: 2013-01-01
Classification: A61B

Abstract:
1. A method for obtaining a specimen from a target area within a tissue mass with a needle assembly comprising a guide cannula, and a variable throw biopsy device comprising a handle supporting a biopsy cannula and a biopsy stylet that is received within the cannula, the handle configured to affect the movement of the biopsy cannula and biopsy stylet relative to each other, the method comprising: setting a throw distance of the biopsy device by limiting the movement of the biopsy stylet and biopsy cannula relative to each other to select a specimen length; and calibrating an effective length of the guide cannula in accordance with the throw distance such that a distal end of at least one of the biopsy cannula and biopsy stylet is at a predetermined axial position relative to a distal end of the guide cannula when the biopsy cannula and biopsy stylet are inserted into the guide cannula until the biopsy device stops against the guide cannula.