Patent ID: 7311694

Claim:
An infusion set comprising: a base having upper and lower sides, a base cannula extending downwardly from the lower side, and a port extending upwardly from the upper side, the port being in fluid communication with the base cannula, and the port comprising a wall with a top portion and a sidewall portion, the port wall being shaped to receive a septum adapted to substantially seal said port from fluid communication therethrough, the septum being substantially flush with the top portion of the port, and the surface area of the top portion of the port being smaller than an exposed surface area of the septum; 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 the 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 needle pierces the skin, thereby permitting the base cannula to penetrate the skin with the needle and the adhesive layer on the lower side of the base to contact the skin such that base remains adhered to the patient's skin when the needle is removed from the base cannula without disengaging the base cannula from the patient; an infusion cap comprising an upper side and a lower side, 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, the infusion cap being adapted to rotate with respect to the base while engaged, 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.