Patent ID: 6196978
Filing Date: 2001-03-06
Classification: A61B

Abstract:
In combination, a holder and a biopsy instrument comprising a tubular cannula having a cannula bore and with a front end and an axial opening at the front end communicating with the cannula bore, a wall of the cannula having, in proximity of the front end, an opening extending through the wall; a substantially cylindrical tube having a bore and with an axial front end and an opening at the front end communicating with the bore of the tube, the tube having a projection at the front end opening with an end section bent toward the axis of the tube, wherein the cannula is adapted for being disposed in the bore of the tube, and the end section of the tube is shaped for being inserted into the opening in the cannula wall and is axially displaceable in a forward direction so as to be deflected towards the axis of the cannula, a spring exerting a force, and being arranged for displacing the cannula and the cylindrical tube in a distal direction, means for damping to reduce the oscillation of the cannula and the tube relative to each other when displacement is stopped, the canula and the tube including means for connecting them with the holder for axial forward displacement of the cannula and the tube.