The present invention provides an improved vascular access port comprising a port base with a metallic dish insert molded (or bonded) into the bottom of the reservoir. In one embodiment, a single reservoir is provided. In another embodiment, plural reservoirs are provided. The metallic bottom of the...http://www.google.com.hk/patents/US20030181878?utm_source=gb-gplus-share專利 US20030181878 - Implantable vascular access device
