Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : June 28, 2023 - July 01, 2023
To train for vitreoretinal surgeries, such as peeling of the inner limiting membrane, a surgical simulator with an elaborate retinal model and contact detection method is necessary. Quantitative evaluation of forceps contacts to the retinal model is required because excessive forceps contact can cause loss of eyesight. This paper presents a detection method using image analysis to detect forceps contact with the retinal model. An evaluation system for contact detection of forceps was constructed, which includes an optical system incorporating an 850 nm LED, a CCD camera, and an infrared pass filter placed under a retinal model. This system observes the reflected light of infrared light at the forceps tips. The luminance value array of the forceps part in the images changed before and after the forceps contact. From the evaluation results, forceps contact was detected at a load of less than 0.1 mN within a radius of 2 mm.
