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Craniofacial distractor applicator.

David W Dorfman1, Frank S Ciminello, Granger B Wong

  • 1Department of Oral and Maxillofacial Surgery, University of California, San Francisco, California 94143, USA. david.dorfman@ucsf.edu

The Journal of Craniofacial Surgery
|March 12, 2009
PubMed
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A new craniofacial distractor applicator ensures precise, parallel placement of bilateral distractors for midface and mandibular advancements. This device simplifies intraoperative vector translation, improving surgical accuracy.

Area of Science:

  • Craniofacial surgery
  • Biomedical engineering
  • Surgical instrumentation

Background:

  • Craniofacial distraction osteogenesis planning relies on imaging but faces intraoperative challenges.
  • Accurate placement of bilateral distractors and vector control remain significant difficulties.
  • Existing methods, like CT with radiofrequency triangulation, aid placement but not parallelism.

Purpose of the Study:

  • To develop and evaluate a novel craniofacial application stabilization device.
  • To enable precise, equal, and parallel placement of bilateral midface and mandibular distractors.
  • To facilitate intraoperative measurement and translation of distraction vectors.

Main Methods:

  • Development of a compact, hinged craniofacial application stabilization device with a distractor coupler.

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  • Calibration of hinges for vector determination and equal application.
  • Fixation to the nasion with a Steinmann pin for intraoperative reference.
  • Demonstration of device accuracy on skull models.

    • Main Results:

    • The device allows for equal and parallel intraoperative placement of bilateral craniofacial distractors.
    • Simultaneous placement of distractors was achieved, enabling more precise endpoint determination.
    • The applicator demonstrated accuracy in achieving parallel placement on skull models.

    Conclusions:

    • The developed craniofacial distractor applicator is a simple, effective tool for accurate parallel placement of distractors.
    • This device addresses key intraoperative challenges in craniofacial distraction osteogenesis.
    • It offers improved precision and control for surgical outcomes in craniofacial reconstruction.