Drug administration needle unit

摘要

A needle or cannula set especially adapted to access an implanted drug delivery portal includes a rigid base having a flat undersurface and a low profile. The base supports one end of a needle so that the needle projects from the base perpendicular to the base undersurface. One end of a flexible tube is secured to the base in fluid communication with the needle and the opposite end of the tube is terminated by a connector. A complaint pad is mounted to the base undersurface to assure proper seating of the base against the skin of the patient when the needle unit is inserted in the patient. The set also includes a handle which releasably connects to the base to facilitate inserting the needle unit into and withdrawing it from the patient and an adhesive dressing which is arranged to drape over the base with its edge margin extending all around the base for anchoring the needle unit to the patient and for providing an occlusive seal all around the puncture site. The set may also include a needle cover releasably coupled to the base to protectively enclose the needle and compliant pad prior to using the needle unit.