Patent ID: 8262585
Filing Date: 2012-09-11
Classification: A61B

Abstract:
1. A single-insertion, multiple sampling biopsy device, comprising: an outer cannula configured to sever tissue, the outer cannula configured to extend along a longitudinal axis from a proximal end to a distal end, the outer cannula having a first port; a stylet disposed in the outer cannula and configured to translate along the longitudinal axis towards the distal and proximal ends in the outer cannula, the stylet having a sample acquisition recess located proximal to a pointed tip; a sheath disposed between the outer cannula and the stylet, the sheath configured to translate along the longitudinal axis towards the distal and proximal ends; a bulkhead disposed in the stylet and configured to translate with the stylet along the longitudinal axis towards the distal and proximal ends; and a drive unit coupled to the outer cannula, stylet, and sheath and configured to selectively transmit motive force to at least one of the outer cannula, stylet, and sheath such that the outer cannula is extended to cover the sample acquisition recess of the stylet to sever tissue in the sample acquisition recess to form a tissue sample and such that the sheath is interposed between the outer cannula and the sample acquisition recess to cover the severed tissue sample in the sample acquisition recess.