Concept, design and fabrication of smart orthopedic implants

• Tipo: Artigo em Revista Científica Internacional
• Data: 2000

Autores

F. Burny (Autor) Outra; M. Donkerwolcke (Autor) Outra; F. Moulart (Autor) Outra; R. Bourgois (Autor) Outra; R. Puers (Autor) Outra; K. Van Schuylenbergh (Autor) Outra; Mário Adolfo Barbosa (Autor) FEUP; O. Paiva (Autor) Outra; F. Rodes (Autor) Outra; J. B. Bégueret (Autor) Outra; P. Lawes (Autor) Outra

Revista

Título: Medical Engineering & Physics

Vol. 22 Nº 7

Páginas: 469-479

ISSN: 1350-4533

Editora: Elsevier

Indexação

ISI Web of Knowledge - 39 Citações

Scopus - 44 Citações

Outras Informações

ID Authenticus: P-000-Z56

DOI: 10.1016/s1350-4533(00)00062-x

Abstract (EN): Extensive clinical experience has been built up using orthopaedic implants instrumented with strain gauges connected to a Wheatstone bridge by means of percutaneous leads. This research showed the medical relevance of the monitoring of the deformation of implants as a powerful tool to evaluate nursing and rehabilitation exercises, for tracing dangerous overloads and anticipating implant failure and also to observe the healing process. The IMPACT 3500 project focuses on the instrumentation of femoral implants with on board sensors: regular Benoist-Girard implants have been modified. to contain a 'sensing cell', and thoroughly tested in vitro and in vivo. The implant deformations are measured with resistive strain gauges, and the signal is transferred to a personal computer for processing and display, via a hard wired connection, or via a telemetry system. Two fully implantable wireless designs, called Linkstrain and Sealstrain, are powered from the outside by magnetic induction. As Sealstrain contains the whole telemetric system in its cavity, the highest miniaturization was required; this seriously deteriorates the efficiency of the inductive power link.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11