Implantable parenteral hyperalimentation catheter system

摘要

An implant device for introduction of nutrients or chemotherapy agents to the heart. A substantially rigid percutaneous body (10) is firmly held to the skin by means of a flexible sleeve member (12) formed of a polytetrafluoroethylene polymer at the epidermis (14) and a polyethylene terephthalate portion (22) through the dermis (16). A catheter (24) extends from the rigid body (10) into the right auricle of the heart or large central vein such as the superior vena cava. The catheter (24) is positioned and anchored by means of a sliding wing (48) which can provide tissue ingrowth where the wing is positioned by the surgeon. A septum closure (32) within the tubular body cavity seals off the implant interior from the environment. When not in use, a sponge (72) saturated with disinfectant is placed within the device's internal cavity (74) which is capped and thereby maintains sterility. Nutrients are supplied through an access set (55) which includes a single probe carrier (56) and a flexible carrier cap (52) which expands so as to snap fit over the tubular body (10) which extends through the skin. The septum (32) is penetrated by a short shell cannula (64) which extends from the single probe carrier (56).