Patent ID: 6997914

Claim:
An implantable access port for use in transferring a fluid transdermally between an external fluid storage or dispensing device and a site within a patient's body, said access port comprising: a base; a bowl-shaped reservoir defined within the base by a smooth surfaced wall, the bowl-shaped reservoir having an open top and an opposed bottom portion, wherein a center of the bottom portion of the bowl-shaped reservoir is spaced farthest from the open top, wherein the bowl-shaped reservoir has a cross-sectional shape selected from a group consisting of: a parabolic shape, a hemispherical shape, and a semi-hemispherical shape; a septum secured to the base and enclosing the reservoir within the base; a reservoir outlet defined within the base and forming an outlet stem, the reservoir outlet underlying the center of the bottom portion of the bowl-shaped reservoir, wherein at least a portion of the reservoir outlet extends outwardly away from the wall of the bowl-shaped reservoir and away from the center of the reservoir, and wherein the reservoir outlet defines an opening positioned substantially tangent with respect to the center of the bottom portion of the reservoir; and an outlet passageway defined within the base, the outlet passageway being in communication with an external opening defined in an exterior side wall of the base and the opening in the reservoir outlet.