This advanced exercise by Dr. Diego Velasquez challenges the operator’s tactile sensations and hands-eye coordination at different levels. First, penetration and elevation of the egg shell (average thickness of 0.3 to 0.4mm) must be accomplished without rupturing the inner egg membranes.
Once the inner membranes are exposed, an incision is made. The average thickness of the membranes of the egg ranges from 73 to 114 micronsi (the average human hair thickness is 100 micros).
Once an opening is accomplished, 10-0 nylon suture material is utilized to approximate the edges of the incision line. Egg membranes (essentially made out of keratin and other proteins) are rather fragile and easy to tear. Manipulation with Omnia’s microsurgical instruments (needle holder and tissue holder) will help accomplish this task.