Abstract: A septum is provided for use with implantable ports used for repeated drug delivery infusions. The septum allows for a substantially higher (more than twice) number of punctures prior to leakage and failure. This is achieved by the use of two different Shore A durometer hardnesses for different sections of the septum, one of harder material than used in prior art septums for the main body of the septum, and a section of much softer Shore A duromater hardness adjacent the inner surface of the septum for greater sealing facility when a needle is withdrawn. In addition, the greater hardness of the main body allows for greater stability of the needle when in place in the septum.

Abstract: A flexible body fluid drain tube has substantially flat cross section with a pair of parallel longitudinal internal ribs along one substantially flat wall which are spaced apart a distance greater than their respective distances from the adjacent edges of the flat wall, a central internal longitudinal rib along the opposite substantially flat wall, and a pattern of drain holes along both flat walls in line with the parallel ribs. The ribs prevent the tube from collapsing even when the tube is subject to a very high vacuum and/or strong lateral compression forces due to body movements of the patient and the healing process at the drainage site. The central rib can wipe back and forth across the opposite wall to keep the tube passageway and drain holes clear when the flat tube walls are moved laterally relative to one another by body movements of the patient and the healing process.