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Robot-enhanced fetoscopic surgery.

Colin G Knight1, Attila Lorincz, Anthony Johnson

  • 1Maxine and Stuart Frankel Foundation Computer-Assisted Robot-Enhanced Surgery Program, the Children's Research Center of Michigan, Detroit, MI, USA.

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|October 16, 2004
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Summary
This summary is machine-generated.

Robotic surgery was explored in a fetal sheep model for fetoscopic procedures. The percutaneous approach with gas insufflation showed promise, with 4 of 6 fetuses surviving and demonstrating good healing.

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Area of Science:

  • Minimally Invasive Surgery
  • Surgical Robotics
  • Fetal Medicine

Background:

  • Fetoscopic surgery offers reduced maternal morbidity compared to open fetal surgery.
  • Robotic surgery enhances endoscopic procedures via tremor filtration, motion scaling, and improved ergonomics.
  • The study aimed to evaluate robotic surgery platforms in a fetal animal model.

Purpose of the Study:

  • To assess the feasibility and efficacy of using the Zeus Robotic Surgery System for fetoscopic procedures in a fetal sheep model.
  • To compare different surgical techniques, including uterus exteriorization versus percutaneous approaches and liquid versus gas insufflation.

Main Methods:

  • The Zeus Robotic Surgery System was employed for fetoscopic surgery in pregnant ewes.
  • Procedures involved either exteriorized or percutaneous uterine access with liquid or gas insufflation.
  • Fetal skin and fascial defects were created and sutured using the percutaneous technique with gas insufflation.

Main Results:

  • The exteriorized uterus model presented challenges with unpredictable instrument movement and fluid leakage.
  • In a fluid environment, visual field clouding and difficulty immobilizing the fetus were significant issues.
  • In the survival model, 4 out of 6 fetuses survived to a 2-week autopsy, exhibiting good gross and histological healing.

Conclusions:

  • The Zeus Robotic Surgery System is applicable for fetoscopic surgery in a sheep model.
  • The percutaneous approach utilizing a nitrous oxide environment proved most effective.
  • Further research in a primate model is necessary to fully realize the benefits of robotic surgery in fetoscopic applications.