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Design and testing of a minimally invasive intervertebral cage for spinal fusion surgery

  • Anderson, Walter (Mechnical, Industrial and Manufacturing Engineering, University of Toledo, College of Engineering) ;
  • Chapman, Cory (Mechnical, Industrial and Manufacturing Engineering, University of Toledo, College of Engineering) ;
  • Karbaschi, Zohreh (Mechnical, Industrial and Manufacturing Engineering, University of Toledo, College of Engineering) ;
  • Elahinia, Mohammad (Mechnical, Industrial and Manufacturing Engineering, University of Toledo, College of Engineering) ;
  • Goel, Vijay (Mechnical, Industrial and Manufacturing Engineering, University of Toledo, College of Engineering)
  • Received : 2012.08.03
  • Accepted : 2012.10.16
  • Published : 2013.03.25
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Abstract

An innovative cage for spinal fusion surgery is presented within this work. The cage utilizes shape memory alloy for its hinge actuation. Because of the use of SMA, a smaller incision is needed which makes the cage deployment minimally invasive. In the development of the cage, a model for predicting the torsional behavior of SMAs was developed and verified experimentally. The prototype design of the cage was developed and manufactured. The prototype was subjected to static tests per ASTM specifications. The cage survived all of the tests, alluding to its safety within the body.

Keywords

References

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