摘要 |
A venous access port assembly (10) having a housing base (28) with a disc harge stem (16), a septum (14) and a cap (36). An interior reservoir (22) is defined by a well (30) in the housing base and the bottom surface of the se ptum, and a passageway (20) extends from the reservoir through the discharge stem (16). The cap (36) is secured to the housing base (28) and securely re tains the septum in the assembly (10), compressing an annular flange (44) of the septum against a septum seat (46) of the housing base. Horizontal ribs on the interior of the cap snap into complementary grooves on the side wall of the housing base to mechanically lock together the cap and housing base d uring curing of the solvent bonding agent. The cap (48) is mechanically secu red to the housing base (28) as well as being bonded thereto. Crush ribs (72 ) on the interior surface (68) of the cap (36), precisely center the cap abo ut the housing base during assembly and compensating for manufacturing toler ances. |