Tru-Cut biopsy needle

Tru-Cut biopsy needle

a disposable needle with outer cannula and inner, notched rod in which a tissue specimen is cut, trapped and withdrawn. The needle is commonly used for percutaneous biopsy of lymph nodes, liver, kidney, etc.
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It has been estimated that the contemporary 18-gauge biopsy needle is only about 36% of the width of the traditional 14-gauge Tru-Cut biopsy needle.