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Fig. 1 —Photograph shows three needle types for biopsy of bone
lesions. First type is Bonopty coaxial system (C. R. Bard, Inc.) (A).
Introducer (1) with trocar (below) traverses soft tissue. Trocar is removed to
allow drill bit (2) to replace it and traverse bone. Note cutting portion of
drill bit (straight arrow). Once in position, bit is removed to allow
bone biopsy needle (3) with trocar (below) to be positioned. Once positioned,
biopsy needle trocar is removed and biopsy sample is obtained. Second type is
Quick-Core biopsy "gun" (B) (Cook) for soft-tissue cores only.
Note illustrated needle is 9 cm long; a longer needle is required to fit
through Bonopty coaxial system. Third type of needle is 11-gauge InterV
Traplok system (C) (Medical Device Technologies, Inc.). Note detail of trap
device (curved arrow) to help retain biopsy tissue core within
needle.
