SEPTUM PORT LOCATOR SYSTEM AND METHOD FOR AN IMPLANTABLE THERAPEUTIC SUBSTANCE DELIVERY DEVICE

摘要

An implantable medical device system (20) includes an implantable device (24) and an external locator device (26) for percutaneously locating a port opening (28,30) of the implantable device. The implantable device includes a port chamber (28) forming a port opening, a septum (86) sealing the port chamber relative to an exterior of the device, and a coil (32) positioned at a known location relative to the port opening. The locator device includes a controller (134), at least one X-loop (150) electrically coupled to the ' controller and oriented along a first major axis, and at least one Y-loop (160) electrically coupled to thef controller and oriented along a second major axis differing from the first major axis. The system is configured such that when the locator is spatially proximate the coil, an induced voltage in at least the Y-loop (s) is read by the controller to indicate a location of the coil relative to the locator device.