Towards biodegradable wireless implants

A new generation of partially or even fully biodegradable implants is emerging. The idea of using temporary devices is to avoid a second surgery to remove the implant after its period of use, thereby improving considerably the patient's comfort and safety. This paper provides a state-of-the-art...

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Bibliographic Details
Published in:Philosophical transactions of the Royal Society of London. Series A: Mathematical, physical, and engineering sciences physical, and engineering sciences, 2012-05, Vol.370 (1967), p.2418-2432
Main Authors: Boutry, Clémentine M., Chandrahalim, Hengky, Streit, Patrick, Schinhammer, Michael, Hänzi, Anja C., Hierold, Christofer
Format: Article
Language:English
Subjects:
Alloys
Biocompatible Materials
Biodegradable Metal
Biodegradable Polymer
Biodegradation
Conductive Polymer
Conductivity
Equipment Design
Implants
Materials
Polymers
Q factors
Radio Waves
Resistor-Inductor-Capacitor
resistor-inductor-capacitor (RLC) resonator
Resonator
Resonators
Sensors
Telemetry
Wireless Implant
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Summary:A new generation of partially or even fully biodegradable implants is emerging. The idea of using temporary devices is to avoid a second surgery to remove the implant after its period of use, thereby improving considerably the patient's comfort and safety. This paper provides a state-of-the-art overview and an experimental section that describes the key technological challenges for making biodegradable devices. The general considerations for the design and synthesis of biodegradable components are illustrated with radiofrequency-driven resistor-inductor-capacitor (RLC) resonators made of biodegradable metals (Mg, Mg alloy, Fe, Fe alloys) and biodegradable conductive polymer composites (polycaprolactone-polypyrrole, polylactide-polypyrrole). Two concepts for partially/fully biodegradable wireless implants are discussed, the ultimate goal being to obtain a fully biodegradable sensor for in vivo sensing.
ISSN:1364-503X
1471-2962
DOI:10.1098/rsta.2011.0439