4.4 Article

Laser fabrication of electrical feedthroughs in polymer encapsulations for active implantable medical devices

Journal

MEDICAL ENGINEERING & PHYSICS
Volume 42, Issue -, Pages 105-110

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.medengphy.2017.01.010

Keywords

Hermetic feedthroughs; Bionic implants; Laser joining; Polymer encapsulations; Water vapor transmission rate; Polyetheretherketone

Funding

  1. Australian Research Council [LP110200227]
  2. Australian Research Council [LP110200227] Funding Source: Australian Research Council

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Hermetic electrical feedthroughs are essential for safe and functional active implantable biomedical devices and for a wide range of other applications such as batteries, supercapacitors, OLEDs and solar cells. Ceramics and metals have previously been the materials of choice for encapsulations, while polymers have advantages of ease of mass production and end user compatibility. We demonstrate a laser sealing technology that gives hermetic, mechanically strong feedthroughs with low electrical resistance in a polyetheretherketone (PEEK) encapsulation. The conductive pathways are wires and sputtered thin films. The water vapor transmission rate through the fabricated encapsulations is comparable to that of PEEK itself. (C) 2017 Published by Elsevier Ltd on behalf of IPEM.

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