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Development of high definition three-dimensional laparoscopy system with convergence control and its application to advanced cancer surgery

Young-Woo Kim, MD, PhD, Hee Bong Yang, CEO

National Cancer Center, Korea; Sometech Inc.

Objective of the device;
Main pitfall of conventional two-dimensional (2D) laparoscopy system (LS) is a lack of depth perception and low dexterity. It gives major difficulty to surgeons to perform delicate surgery. Three-dimensional (3D) views realizing natural visual field would provide better dexterity to the surgeons and produce better operative outcome. Although there have been 3D LS, various technological limitations disappointed surgeons so far. We developed new high definition 3D LS to make a comfortable and high quality 3D view and applied to advanced cancer surgery to see its benefit.

Description of the technology and method of its use or application;
This 3D LS basically uses two lens arrays with Hopkins method making distortion-free optical images, and 1/3 inch sized 3 CCD image sensors making 1920×1080 full HD processed images to display. Main characteristics of this system are using convergence control and binocular disparity control. Based on 5cm as a main working distance, working distance is possible to be adjusted from 3cm as a close distance to 10cm as a long distance, and convergence can be adjusted manually according to the working distance. Binocular disparity control makes this system like human eyes to see an object with optimal binocular disparity to make a comfortable stereoscopic view. When a scope is changed, binocular disparity should be adjusted by a control jig, and users can adjust binocular disparity easily by using the touch screen control.
This 3D LS can be applied to every laparoscopic surgery, especially, advanced and delicate surgery definitely requiring high quality visualization to make an optimal surgical outcome.

Preliminary results if available;
We have applied to various advanced cancer surgery like D2 gastrectomy for gastric cancer requiring delicate lymph node dissection around peripancreatic dangerous area.

Conclusions/Future directions;
This 3D LS fulfilled real natural visualization to facilitate dexterity of laparoscopic surgery. It means improvement of operative outcome involving morbidity, mortality, operating time, and finally survival and quality of life of the patients. In the near future, more accurate visual signal control would make an ocular-fatigue-free and clearer view for the surgeons.


Session: Poster Presentation

Program Number: ETP070

81

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