Distraction osteogenesis is a method of generating new bone formation by the gradual application of tensile stress across an osteotomy site (a complete cut through the bone). Internal or intraoral distraction devices have become the most common clinical apparatus in craniofacial distraction osteogenesis, although actuating the distraction devices relies upon manual length adjustment under patients’ compliance, introducing inconvenience and potential error in the procedure. To realize a fully implantable automatic distraction device, we propose a device design comprising a continuous miniature motor-driven distractor with a controller and an on-board lithium-ion battery. A benchtop prototype was fabricated to demonstrate the device’s structural design capable of transmitting sufficient loads with sufficient strain accuracy; it is capable of using a battery selection algorithm to determine an appropriate electrochemistry, temperature, sealability, and form factor and a control algorithm and a testing protocol with a laboratory-fabricated control circuit. This new distraction osteogenesis device enables completely automated and continuous distraction by the application of a low strain magnitude with multiple steps potentially leading to enhanced osteogenic activity.
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e-mail: mdchung@umich.edu
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December 2010
Design Innovations
An Implantable Battery System for a Continuous Automatic Distraction Device for Mandibular Distraction Osteogenesis
M. D. Chung,
M. D. Chung
Department of Mechanical Engineering,
e-mail: mdchung@umich.edu
University of Michigan
, Ann Arbor, MI 48109-2125
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R. D. Rivera,
R. D. Rivera
Department of Oral and Maxiallofacial Surgery,
University of Michigan
, Ann Arbor, MI 48109-2125
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S. E. Feinberg,
S. E. Feinberg
Department of Oral and Maxiallofacial Surgery,
University of Michigan
, Ann Arbor, MI 48109-2125
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A. M. Sastry
A. M. Sastry
Department of Mechanical Engineering, Department of Biomedical Engineering, and Department of Materials Science and Engineering,
University of Michigan
, Ann Arbor, MI 48109-2125
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M. D. Chung
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109-2125e-mail: mdchung@umich.edu
R. D. Rivera
Department of Oral and Maxiallofacial Surgery,
University of Michigan
, Ann Arbor, MI 48109-2125
S. E. Feinberg
Department of Oral and Maxiallofacial Surgery,
University of Michigan
, Ann Arbor, MI 48109-2125
A. M. Sastry
Department of Mechanical Engineering, Department of Biomedical Engineering, and Department of Materials Science and Engineering,
University of Michigan
, Ann Arbor, MI 48109-2125J. Med. Devices. Dec 2010, 4(4): 045005 (6 pages)
Published Online: December 6, 2010
Article history
Received:
May 7, 2010
Revised:
October 24, 2010
Online:
December 6, 2010
Published:
December 6, 2010
Citation
Chung, M. D., Rivera, R. D., Feinberg, S. E., and Sastry, A. M. (December 6, 2010). "An Implantable Battery System for a Continuous Automatic Distraction Device for Mandibular Distraction Osteogenesis." ASME. J. Med. Devices. December 2010; 4(4): 045005. https://doi.org/10.1115/1.4003007
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