Importance

Loading Importance Indicators...

Abstract

An improved disposable biopsy needle unit (12) includes a metal cannula (16), a molded plastic T-shaped handle (18), and a removable stylet (20). A solid hub portion (28) of the handle (18) is formed around a lateral tab (30) near the proximal end of the cannula (16) for reinforcement. A hollow fitting (32) extends between the proximal end of the cannula (16) and a recess between the opposite wing portions (26) of the handle (18). Locking ears (48) are preferably provided on the fitting (32) for releasable attachment to an aspiration device, such as a syringe (14). The stylet (20) includes a solid needle (34) with a turned proximal end within a molded plastic cap (38) for reinforcement. A lug (44) and slot (46) are provided on the stylet (20) and handle (18), respectively, for properly locating the stylet when inserted into the cannula (16). A second embodiment (80) incorporates an upset, non-circular boss (82) on the fitting (32') instead of a tab (30) on the cannula (16') for internal reinforcement.

Loading the Abstract Image...

First Claim