Venous access port assembly and method of assembly

摘要

An implantable port assembly (10) having a lower housing (12) and an upper housing (14) and at least one chamber (20,22) and a corresponding septum (16,18) associated therewith. The upper housing (14) includes a plurality of latch arms (30) depending therefrom that latch with corresponding catches (34) of the lower housing for mechanically securing the assembly together during bonding or welding. Each septum (16,18) includes a peripheral flange (40) held in compression by and between the upper and lower housings (14,12) upon and after assembly. In a dual port assembly (10), a pair of septa (16,18) are disposed side-by-side with overlapping flanges (54), and the upper housing (14) includes posts (52) extending through apertures (54) through the overlapping flanges (56) that extend into holes (58) in the lower housing (12).

主权项

1. A venous access port, comprising:
a housing, at least two self-sealing septa for infusion by needle, the two self-sealing septa each having a peripheral flange and a raised and rounded central portion relative thereto, the raised and rounded central portion defining a subcutaneous, self-sealing access site for multiple needle sticks, at least one chamber associated with each respective septum, and a discharge end for a discharge stem affixed thereat for connection with a catheter proximal end, the discharge end having at least one passageway therethrough associated with each chamber and associated with a respective lumen of the catheter for establishing fluid communication between each chamber and a respective lumen; the housing including a lower housing body and an upper housing body, the lower housing body and the upper housing body each defining internal seating surfaces configured to abut and compress the peripheral flange of each septa therebetween, the upper housing body including at least a pair of latching sections disposed on respective sides thereof to latchingly engage respective corresponding latching sections defined on and by the lower housing body that mechanically secures together the upper and the lower housing bodies in a manner compressing the peripheral flange of each septa and securing the septa in a sealed relationship with the upper and lower housing bodies during needle penetrations into and withdrawal from the septa, the latching sections of one of the upper or the lower housing body include latch arms depending thereform, and the other of the upper or the lower housing body includes recesses along side surfaces thereof within which an entirety of a respective latch arm is disposed upon assembly of the venous access port, thereby providing a smooth continuous exterior surface to the venous access port.