Biopsy needle

• US 8,343,073 B2
• Filed: 09/10/2009
• Issued: 01/01/2013
• Est. Priority Date: 09/17/2004
• Status: Active Grant

• Current Assignee: Miller Medical, LLC
• Original Assignee: Stuart H. Miller
• Inventors: Miller, Stuart H.
• Primary Examiner(s): Hoekstra, Jeffrey G
• Assistant Examiner(s): SMITH, FANGEMONIQUE A
• Application Number:
  US12/585,266
• Publication Number:
  US 20100076342A1
• Time in Patent Office: 1,209 Days
• Field of Search: 600/567, 600/564, 600/566, 606/167
• US Class Current: 600/567
• CPC Class Codes: A61B 10/0275 with sample notch, e.g. on the side of inner stylet

Abstract

A biopsy needle includes an outer cannula and an inner cannula. The inner cannula includes a distal end and a proximal end, the outer cannula being shaped and dimensioned to closely circumscribe the inner cannula for movement relative thereto. The inner cannula further includes a sample recess at its distal end, the sample recess including a dual cavity recess, wherein a first cavity has a parabolic shape and the second cavity has a circular shape.

Claims

1. A biopsy needle, comprising:

an outer cannula;

an inner cannula including a distal end and a proximal end, the outer cannula being shaped and dimensioned to closely circumscribe the inner cannula for movement relative thereto;

the inner cannula further including a sample recess at the distal end of the inner cannula, the sample recess including a forward wall and a rear ward wall, the forward wall including multiple concave surfaces composed of a first cavity intersecting with a second cavity wherein the first cavity has a first shape and the second cavity has a second shape;

wherein the first shape is different from the second shape, the first cavity having a parabolic shape and the second cavity having a circular shape.