Fulltext

Design and test of a MEMS strain-sensing device for monitoring artificial knee implants

Hasenkamp, W. ; Thevenaz, N. ; Villard, J. ; Bertsch, A. ; Arami, A. ; Aminian, K. ; Terrier, A. ; Renaud, P.

In: Biomedical Microdevices, 2013, vol. 15, no. 5, p. 831-839

Ajouter à la liste personnelle
    Titre
    • Design and test of a MEMS strain-sensing device for monitoring artificial knee implants
    Auteur
    • Hasenkamp, W.. École Polytechnique Fédérale de Lausanne—EPFL, 1015, Lausanne, Switzerland
    • Thevenaz, N.. École Polytechnique Fédérale de Lausanne—EPFL, 1015, Lausanne, Switzerland
    • Villard, J.. Neurocentre—Centre du dos, Avenue de Savoie 10, 1003, Lausanne, Switzerland
    • Bertsch, A.. École Polytechnique Fédérale de Lausanne—EPFL, 1015, Lausanne, Switzerland
    • Arami, A.. École Polytechnique Fédérale de Lausanne—EPFL, 1015, Lausanne, Switzerland
    • Aminian, K.. École Polytechnique Fédérale de Lausanne—EPFL, 1015, Lausanne, Switzerland
    • Terrier, A.. École Polytechnique Fédérale de Lausanne—EPFL, 1015, Lausanne, Switzerland
    • Renaud, P.. École Polytechnique Fédérale de Lausanne—EPFL, 1015, Lausanne, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Biomedical Microdevices, 2013, vol. 15, no. 5, p. 831-839. Springer US; http://www.springer-ny.com
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:315544
    Summary
    This paper describes the development of a polyimide-based MEMS strain-sensing device. Finite element analysis was used to investigate an artificial knee implant and assist on device design and to optimize sensing characteristics. The sensing element of the device was fabricated using polyimide micromachining with embedded thin-metallic wires and placed into a knee prosthesis. The device was evaluated experimentally in a mechanical knee simulator using static and dynamic axial load conditions similar to those encountered in vivo. Results indicates the sensor is capable of measuring the strain associated to the total axial forces in the range of approximately 4 times body weight with a good sensitivity and accuracy for events happening within 1 s time window