Patent ID: 7331939

Claim:
An infusion set comprising: a base comprising: upper and lower sides; base cannula extending downwardly from the lower side; a port extending upwardly from the upper side, the port being in fluid communication with the base cannula; and a substantially annular-shaped protruding member extending down from the lower side and adapted for removably engaging a needle guard; and an adhesive layer mounted to the lower side of the base; an introducer cap adapted to be pressed against the upper side of the base and removably coupled to the base, the introducer cap comprising upper and lower sides, and a needle extending downwardly from the lower side, the needle being adapted to extend through a septum on the upper side of the base and through the base cannula on the lower side of the base, whereby the attached base and introducer cap are adapted to be pressed against a patient's skin such that the introducer needle pierces the skin and the adhesive layer on the lower side of the base contacts the skin; an infusion cap comprising an upper side and a lower side, a substantially cylindrical port-engaging wall extending downwardly from the lower side of the infusion cap adapted to guide the infusion cap onto the port, wherein the port-engaging wall extends downwardly from the lower side of the infusion cap beyond the infusion cannula, wherein the infusion cap comprises at least one retaining member to attach to the base, the lowest surface of the wall being upwardly spaced from the lowest surface of the at least one retaining member the infusion cap being adapted to be pressed against the upper side of the base and removably attached to the base after disengagement of the introducer cap from the base, a port-engaging surface of the port-engaging wall being in close proximity with the septum when the infusion cap is attached to the base, the infusion cap comprising an infusion cannula extending downwardly from the lower side of the infusion cap, and an elongate flexible lumen in fluid communication with the infusion cannula, the infusion cannula being adapted to extend through the septum on the upper side of the base upon engagement of the infusion cap and the base to place the flexible lumen and the infusion cap in fluid communication with the base cannula.