Abstract: A system includes multiple slave devices implanted in a human body, wherein each slave device includes a communication module operable to receive transmitted communications and is associated with a permanent device identifier. The system further includes a master device including a communications module operable to address a first communication to a selected slave device using the permanent device identifier associated with the selected slave device, wherein the first communication includes a local identifier assigned to the selected slave device, the assigned local identifier does not match any other local identifier assigned to any other slave device implanted in the human body, and subsequent communications are addressed to the selected slave device using the assigned local identifier.

Abstract: A system and method for providing intrabody data security on an active implantable medical device is presented. Data is maintained through an active implantable medical device. The data is secured on the active implantable medical device among at least one other active implantable medical device wirelessly interfaced. At least one of access to and use of the data with the other active implantable medical device is limited. Unauthorized changes to the form of the data are prevented.

Abstract: The invention relates to devices, systems, and methods for the measurement of a pressure within a body that is adjusted to compensate for variations in local atmospheric pressure. A pressure measurement system can include an implantable target pressure sensor, an implantable internal reference pressure sensor located remotely from the target pressure sensor, an external reference pressure sensor configured to transmit a telemetric signal that is indicative of the local atmospheric pressure, and at least one condition indicator. The implantable medical device system further includes a controller configured to determine a correlation factor based on a signal from the implantable reference pressure sensor and the signal from the external reference pressure sensor.

Abstract: This invention provides a spectral power monitoring apparatus that uses a diffraction grating to separate a multi-wavelength optical signal along with a reference signal by wavelength into multiple spectral channels and a reference spectral component having a predetermined relative alignment, impinging onto an array of optical power sensors. The optical power sensor array may be configured such that the power levels of the spectral channels impinging onto the optical power sensor array can be related to the electrical signals thus produced by a predetermined conversion matrix. The spectral power monitoring apparatus of the present invention further includes an alignment compensation unit, which monitors the real-time impinging position of the reference spectral component and ensures that the corresponding conversion matrix is used for converting the measured electrical signals to the optical power levels of interest.