BIOPSY NEEDLE DEVICE

摘要

A medical needle shield apparatus (100) is provided that includes a first housing (52) configured to actuate a needle cannula (4). A second housing (106) is releasably engageable with the first housing (52). The needle cannula (4) is disposed for slidable movement with the second housing (106) such that the second housing (106) is extensible from a retracted position to an extended position to enclose a distal end of the needle cannula (4). The second housing (106) includes a binding member (40) that defines binding surfaces that form an aperture configured for slidable receipt of the needle cannula (4). The binding member (40) includes a drag inducing member (68) that engages the needle cannula (4) during slidable receipt of the needle cannula (4) to create a drag force. The drag force and second housing (106) facilitate rotation of the binding member (40) relative to a longitudinal axis of the needle cannula (4) such that the binding surfaces (68) engage the needle cannula (4) to prevent slidable movement of the needle cannula (4).