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Compliant Coiled Minimally Invasive Intervertebral Disc Replacement

ID: 2017-074 A compliant-mechanism, coiled, disc replacement that can be implanted using a minimally invasive surgical approach from the posterior, lateral, or anterior aspect.

Principal Investigator: Anton Bowden

Current disc replacements require an "open" surgical approach which damages or destroys surrounding tissue and requires substantial amount of painful recovery time. Furthermore, most current disc replacements do not accurately restore the kinetics and kinematics of the spinal segment in all degrees of freedom (compression, flexion-extension, lateral bending, axial rotation, translation). Also, many disc replacements utilize frictional bearing surfaces that generate wear particles during spinal motion that can interact with surrounding tissue and cause negative biological reactions. Another challenge is that when current disc replacements are implanted at more than one level (especially adjacent levels), the entire spinal column can become mechanically unstable.

The technology developed at BYU provides the following advantages:

  1. Minimally invasive surgical approach using arthroscopic surgical tools
  2. Accurate restoration of kinematics and kinetics of the spinal segment in all degrees of freedom
  3. A compliant mechanism device with no frictional bearing surfaces
  4. The device can be used as a platform for tissue-engineering approaches to disc repair or replacement
  5. The device can be patient-specific, based on pre-operative imaging
  6. The device is easily manufactured
  7. The device can be made from titanium and designed to have an infinite fatigue life
  8. The device can be made from a bioresorbable polymer
  9. It can be used as a vehicle for pharmaceutical delivery
  10. It resists ejection following implantation

About the Market:
Artificial disc market size is estimated to exceed $2 billion by 2024.

For more information, contact Mike Alder (801-422-3049)

Links and Resources

  1. Inventor Webpage - Anton Bowden