Patent ID: 7491177

Claim:
A biopsy device comprising: (a) a handle; and (b) a needle assembly attached to said handle, wherein said needle assembly comprises: (i) an outer member having an exterior surface configured from a non-ferrous and non-conductive material, the outer member having a tissue-receiving aperture and holes formed through the exterior surface, the outer member defining a lumen; (ii) an insert configured from a non-ferrous and non-conductive material and attached to said outer member, wherein said insert comprises a divider configured to separate at least a portion of the lumen defined by said outer member into a vacuum lumen and a cutter lumen, wherein said insert further comprises longitudinally extending arms having detents operably configured to engage said holes formed through said exterior surface; and (iii) a cutter, wherein said cutter is operably configured to translate within said cutter lumen to sever tissue retained within said tissue receiving aperture, wherein said cutter is further operably configured to maintain the coupling between said insert and said outer member by pressing said insert into said outer member such that said detents are unable to disengage said holes.