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 cannu la (4) is disposed for slidable movement with the second housing (106) such tha t 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) th at 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) facilita te 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).