Patent ID: 6908452

Claim:
A port assembly for an integrated medication delivery system that includes a medication reservoir and a pump assembly, wherein said port assembly enables various fluids to flow into, from, and within the integrated medication delivery system, said port assembly comprising: an elongated housing comprising a proximate end, a distal end, and an interior wall defining a fluid chamber between said ends, said proximate end of said housing extending from the integrated medication delivery system to provide access for the fluid to flow both into and from the integrated medication delivery system; a first fluid connector extending from said housing for allowing the fluid to flow from said fluid chamber into the pump assembly; a second fluid connector extending from said housing for allowing the fluid to flow from the pump assembly into said fluid chamber; a third fluid connector extending from said housing for allowing the fluid to flow between said fluid chamber and the medication reservoir; a plunger disposed in said fluid chamber and being moveable in said fluid chamber between; an off-position where said first, second, and third fluid connectors are isolated from said proximate end of said housing by said plunger to prevent the flow of fluid, a fill-position where said first and third fluid connectors are in fluid communication with said proximate end of said housing thereby providing a fluid flow path between said proximate end of said housing, the medication reservoir, and the pump assembly such that the fluid can be filled through said proximate end of said housing and into the medication reservoir and the pump assembly, and a fluid delivery-position where said first, second, and third fluid connectors are in fluid communication with said proximate end of said housing and with each other for supplying the pump assembly and for delivering the fluid to a patient; at least one seal disposed about said plunger to segregate said fluid chamber of said housing; and at least one leak rib extending at least partially along said interior wall of said elongated housing to selectively cause said at least one seal to leak when said plunger is in said fill-position.