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Connectors Q&A

  •   The implantable electronics sector is a growing market. Can you describe the role of interconnects within this sector?

    Answered September 2nd, 2009 by Expert: Anthony Kalaijakis

    These interconnects must power the systems and transmit signals to the main system for accuracy. This can be a life-critical function.

    In the past, implantable leads were attached through a captive set screw. In other words, there is no female contact in the device; instead, the lead is inserted into an opening on top of the device and screwed into place by the physician. This procedure requires a specific tool, because torque is very important when attaching the lead. If there is not enough torque, the lead could create intermittent electrical contact, since it has only one point of contact with the set screw, or it could disengage completely. If the physician over-torques the set screw, the lead and possibly entire device could be damaged. Having to discard the device and start with a new one adds significant cost.

    Other areas of concern include the possibility of losing a screw, cross threading, damaging the screw head, and even nicking the lead. Implantable devices require uncompromised functionality within highly sensitive and demanding environments.

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