Patent ID: 9125640
Filing Date: 2015-09-08
Classification: A61B

Abstract:
1. A biopsy device, comprising: a first cannula having a first side wall defining a first lumen, said first cannula having a first proximal end and a first distal end, said first cannula having a first aperture extending through said first side wall to said first lumen proximal to said first distal end, said first cannula having a longitudinal axis; a second cannula having a second side wall defining a second lumen, said second cannula having a second proximal end and a second distal end, said second cannula having a second aperture extending through said second side wall to said second lumen proximal to said second distal end, said second cannula being disposed co-axially with said first cannula, at least one of said first aperture and said second aperture having a cutting edge; and a driver unit having a ratchet drive mechanism operatively coupled to said first cannula and said second cannula, said ratchet drive mechanism including: