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Single Motor Mechanism for Placing Polyaxial Screws in Spinal Surgery

Researchers at Saint Louis University have developed an automatic pedicle screwdriver that enables robotic placement of spine screws. The screwdriver is made of stainless steel. The researchers have developed, constructed, and laboratory tested a complete prototype.
Pedicle screws are often used in spinal fusion. Currently there is no tool that can automatically engage and disengage a polyaxial pedicle screw. Currently available tools for pedicle screw insertion require a manual two-handed approach.


The potential advantages of this technology over existing solutions include:

  • Minimizing the manual effort required to insert pedicle screws.
  • Minimizing the complexity of inserting pedicle screws.

  • Applications

    Potential applications of this technology include:

    • Robotic spinal surgery

Additional Details


St. Louis University

Intellectual Property Protection

Patent Issued

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