Patent ID: 7608049
Filing Date: 2009-10-27
Classification: A61B

Abstract:
1. A biopsy needle for removal of tissue comprising: an outer tube having a distal end and an opposing proximal end; an inner tube at least partially disposed within said outer tube; and a mechanism that has a variable diameter for capturing a tissue specimen, the mechanism including a distal end that is directly fixed to the outer tube and an opposing proximal end that is directly attached to the inner tube, the mechanism being entirely contained within the outer tube; wherein at least a portion of the inner tube is free to move longitudinally within and relative to the outer tube, whereby longitudinal movement of the moveable portion of the inner tube relative to the outer tube causes activation of the mechanism for capturing and releasing, respectively, the specimen, wherein longitudinal movement in a proximal direction away from the distal end of the outer tube towards the proximal end of the outer tube causes a reduction in the diameter of the mechanism for capturing the specimen.