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Bioelectric Analyses of an Osseointegrated Intelligent Implant Design System for Amputees
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Instrumented hip implants: electric supply systems.

Marco P Soares dos Santos1, Jorge A F Ferreira, A Ramos

  • 1TEMA/UA-Centre for Mechanical Technology and Automation, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal; DEM/UA-Department of Mechanical Engineering, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.

Journal of Biomechanics
|September 21, 2013
PubMed
Summary
This summary is machine-generated.

Powering active instrumented hip implants is crucial. Motion-driven electromagnetic energy harvesting offers a promising solution for powering these implants, overcoming limitations of current inductive and battery systems.

Keywords:
Active implantElectric power supplyEnergy harvestingInductive poweringInstrumented prosthesis

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Area of Science:

  • Biomedical Engineering
  • Orthopedic Surgery
  • Implantable Devices

Background:

  • Instrumented hip implants monitor biomechanical and thermal conditions.
  • Active implants aim to prevent loosening failures.
  • Effective power systems are essential for active instrumented implants.

Purpose of the Study:

  • To survey and analyze power supply systems for instrumented implants.
  • To evaluate energy harvesting potential for instrumented hip implants.
  • To identify limitations of current powering methods.

Main Methods:

  • Surveyed 17 in-vivo instrumented implant architectures (hip replacements, fracture stabilizers).
  • Analyzed inductive power links and batteries used in-vivo.
  • Assessed energy harvesting systems designed for instrumented hip implants.

Main Results:

  • Inductive power links and batteries are the only in-vivo power sources currently used.
  • Both inductive and battery systems limit full implant operation.
  • Motion-driven electromagnetic energy harvesting shows significant potential.

Conclusions:

  • Inductive powering and batteries present limitations for instrumented implants.
  • Motion-driven electromagnetic energy harvesting is a viable and promising power source.
  • This method can power both passive and active instrumented hip implants.