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WP8 Global System
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WP8 Global System

Description

This WorkPackage aims at developing the communication components (i.e. the Implanted network and the transcutaneous link) as well as integrating the final system.

The global system involves the development of an implanted network and a transcutaneous link. Tasks for the implanted network includes implantable connectors design and test, lead characterization and test, electrical characterization of the system, and practical recommendation for the power supply design. The transcutaneous link requires developing the coupling of the existing MIVIP transcutaneous link and the new EN301839 RF communication standard, the design and integration of antenna, the testing of the prototype and the qualification of the system.

Achievement

Under the collaboration of Workpackage 8 an implantable Monitoring Unit, which on the one hand controls and provides energy to the electrode, and on the other hand receives and transmits the information captured by the electrode to the external processor was developped. Components for the implanted network (i.e. implantable connectors, leads and protocol) has been selected and tested. Compatibility of the chosen RFID communication standard, antenna system and communication protocol for the trancutaneous link were tested positively.

The encapsulation, which protects the Monitoring Unit from the internal environment, is made out of polyetheretherketone (PEEK). This type of housing is suitable for short term implantations as drug delivery or neuromuscular electrical stimulation (NMES) device. The use of PEEK instead of titanium has for advantage to reduce strongly the device cast. Indeed, despite of the raw material cost, the production cost is lower because PEEK machining is easier than for titanium, there is no need of laser welding, and the housing complexity is smaller due to the incorporation of the antennas inside the housing because of its transparency to magnetic radiation.

The connection system between two distinct parts in the physiological environment is a very delicate issue, because it must be watertight and resistant to mechanical stresses and pressure. The IMANE connector is easy to insert by mechanical guidance and polarization, low insertion force, automatic locking system (no screws) and long term reliability of the electrical contacts. The cables are designed to have relatively small electrical resistance and to withstand flexural stresses.