Patent ID: 7713251

Claim:
An implantable access port, comprising a plastic housing member comprising a first side wall portion of at least one fluid chamber and an exit port in the side wall in fluid communication with said fluid chamber, a permeable septum member attached to said housing and defining a top of said fluid chamber, and an insert member comprising a concaved-shape having a base portion covering a bottom of said fluid chamber, an edge radius extending generally outwardly from said base portion generally towards said permeable septum member, and a second side wall portion of said fluid chamber extending from said edge radius only to a point at or below said exit port of said fluid chamber, wherein said insert member comprises a material selected from the group consisting of stainless steel, titanium or ceramic, and wherein a volume of said at least one fluid chamber is defined by said permeable septum, said first side wall portion of said plastic housing member, said second side wall portion of said insert member and said base portion of said insert member.