Patent ID: 7637897
Filing Date: 2009-12-29
Classification: A61M

Abstract:
1. A refill port for an implantable device with integral refill instrument placement detection, comprising: a pierceable septum disposed on the refill port for admitting a refill instrument, the pierceable septum having a first outer surface at least a portion of which is exposed outside the refill port and a second inner surface at least a portion of which is exposed inside the refill port; a detector disposed inside the refill port with respect to the second inner surface of the pierceable septum for determining the placement of a refill instrument within the refill port; and a base defining a refill port chamber for receiving a refill fluid; wherein the detector is a switch that is fluidically separated from the refill port chamber wherein a resilient membrane separates the switch from the refill port chamber while allowing movement from the placement of a refill instrument within the refill port chamber to be translated to the switch.