Optimized Prototype of Instrumented Knee Implant: Experimental Validation
| Autor: | Shaban Almouahed, Eric Stindel, Chafiaa Hamitouche |
|---|---|
| Přispěvatelé: | Département lmage et Traitement Information (IMT Atlantique - ITI), IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Laboratoire de Traitement de l'Information Medicale (LaTIM), Institut National de la Santé et de la Recherche Médicale (INSERM)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Centre Hospitalier Régional Universitaire de Brest (CHRU Brest)-Université de Brest (UBO)-Institut Brestois Santé Agro Matière (IBSAM), Université de Brest (UBO), Université de Brest (UBO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Hospitalier Régional Universitaire de Brest (CHRU Brest)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut Brestois Santé Agro Matière (IBSAM) |
| Rok vydání: | 2017 |
| Předmět: |
0209 industrial biotechnology
Engineering [SDV.BIO]Life Sciences [q-bio]/Biotechnology 0206 medical engineering Biomedical Engineering Biophysics Total knee arthroplasty Piezoelectric element 02 engineering and technology 020901 industrial engineering & automation Gait (human) Self-powered sensor Tibiofemoral force Early failure Knee implant Simulation business.industry [SPI.MECA.BIOM]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Biomechanics [physics.med-ph] Experimental validation Structural engineering 020601 biomedical engineering Power (physics) Tibial baseplate [SDV.IB]Life Sciences [q-bio]/Bioengineering Electric power business [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing |
| Zdroj: | Innovation and Research in BioMedical engineering Innovation and Research in BioMedical engineering, Elsevier Masson, 2017, 38 (5), pp.250-255. ⟨10.1016/j.irbm.2017.06.005⟩ |
| ISSN: | 1959-0318 |
| Popis: | International audience; Background: Embedding self-powered sensors into the knee implant for measuring in-vivo tibiofemoral force distribution can provide beneficial information to both clinicians and researchers. This information may help to reduce the risk of early failure after total knee arthroplasty. It can also be used to improve implant design, refine surgical techniques and enhance postoperative rehabilitation. Methods: An experimental prototype of instrumented tibial baseplate has previously been proposed, developed and tested. A few shortcomings have been observed and identified during the experimental testing. In this study, the design of the proposed prototype was optimized to avoid the mechanical failure of the embedded piezoelectric generator/sensor. Furthermore, piezoceramics of greater height and smaller section were accommodated and tested in the optimized prototype to generate more electric power. This optimized prototype was also experimentally tested using a knee simulator to validate the optimization result. Results: The optimization made to the experimental prototype allowed us to address the aforementioned shortcomings. The mechanical longevity of piezoceramics embedded into the optimized prototype was considerably enhanced with respect to the first prototype (optimized prototype: 54000 gait cycles, first prototype: a few cycles). The produced electric power was also increased (optimized prototype: 4:28 mW, first prototype: 1:81 mW). Conclusion: The optimized prototype lasted for 54000 gait cycles without any obvious mechanical or electrical failures. The electric power produced in this prototype and quantified during experimental trials is sufficient to power an efficient low-power-consumption telemetry system. |
| Databáze: | OpenAIRE |
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