The Egghead, is affordable, offers tactile feedback and allows infinite repetitions in basic training for pituitary surgery. It can be used for training of advanced neurosurgical residents, who thus far have very few possibilities of acquiring endoscopic experience 1).
1)
Engel DC, Ferrari A, Tasman AJ, Schmid R, Schindel R, Haile SR, Mariani L,
Fournier JY. A basic model for training of microscopic and endoscopic
transsphenoidal pituitary surgery: the Egghead. Acta Neurochir (Wien). 2015 Aug
21. [Epub ahead of print] PubMed PMID: 26293227.