The present invention is generally directed to delivering liquid compositions to an interior site in the body. More particularly, the present invention provides devices, systems, and methods for facilitating percutaneous access to an implantable port for performing peritoneal dialysis in a sterile condition....http://www.google.com/patents/US6193684?utm_source=gb-gplus-sharePatent US6193684 - Device for percutaneous peritoneal dialysis
