Finite Element Simulation and Experimental Test of Ovine Corneal Tissue Cutting Process in Cataract Surgery Operation
نویسندگان
چکیده
The modeling of corneal tissue cutting is essential in developing haptic training simulators and robot-assisted surgeries. A finite element model was developed for the ovine process validated with an experimental setup first time. measured force pre-cutting, cutting, relaxation phases. mechanical behavior incision modeled by method. test built to conduct experiments on 32 fresh well-preserved cornea. Force recorded sampling rate 200 Hz. tests were performed intraocular pressures from 15 mm-Hg 18 mm-Hg, keratome velocities 1 mm/s 2 mm/s. characterized nonlinear tissue. In pre-cutting phase, increased until instrument tip penetrated. 12.3% (2 mm/s) 19.1% (1 reduction indicated onset phase after which remained constant. At returned zero. values varied pressure between 0.183N 0.287 N 0.211 0.281 velocity, respectively. simulations show that maximum errors predicted 0.042 velocity. root mean square error 0.025 N.
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ژورنال
عنوان ژورنال: International journal of engineering. Transactions B: Applications
سال: 2021
ISSN: ['1728-144X']
DOI: https://doi.org/10.5829/ije.2021.34.05b.27