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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ocallaghan, John
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2020Development of an active high-density transverse intrafascicular micro-electrode probecitations
- 2019FITEP : a Flexible Implantable Thin Electronic Package platform for long term implantation applications, based on polymer and ceramic ALD multilayers
- 2019FITEP : a Flexible Implantable Thin Electronic Package platform for long term implantation applications, based on polymer and ceramic ALD multilayers
- 2019FITEP: a Flexible Implantable Thin Electronic Package platform for long term implantation applications, based on polymer and ceramic ALD multilayers
- 2017Ultra-thin biocompatible implantable chip for bidirectional communication with peripheral nervescitations
- 2017Ultra-thin biocompatible implantable chip for bidirectional communication with peripheral nervescitations
- 2012Biocompatible packaging solutions for implantable electronic systems for medical applications
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document
Ultra-thin biocompatible implantable chip for bidirectional communication with peripheral nerves
Abstract
To realize optimal recording and stimulation of peripheral nerve cells, a CMOS chip is made with a multitude of electrodes which can be individually addressed in order to select after implantation the 16 best positioned electrodes. Since the Foreign Body Reaction should be minimal for optimum electrode-nerve contact, the CMOS chip is thinned down to 35um and fully packaged resulting in a 75um thin encapsulated chip. The chip is embedded in a biocompatible stack consisting of polymers and inorganic diffusion barriers deposited using atomic layer deposition (ALD). A biocompatible metallization is realized using gold and platinum sandwiched between polymers and ALD layers for flexible interconnects, and iridium oxide (IrOx) is selected as electrode material for optimal charge injection during stimulation. After this dedicated packaging based on the FITEP technology platform (Flexible Implantable Thin Electronic Package), the CMOS chip is still fully functional, which was tested dry (in air) as well as during submersion in saline. The form factor of the packaged chip is optimized for intra-fascicular implantation with minimum tissue damage. First acute in vivo stimulation tests proved that the stimulation capabilities of the IrOx electrodes are very good.