Mini-Bookler Perineal Surgery System. Vaginal Surgery, Rectal Surgery, Urologyretraction for any procedure using a perineal approach can be easily accomplished using the Mini-Bookler Perineal Surgery System. A variety of ring and blade sizes allow you to create optimal visualization of the operative site. Note: Should be used with Mediflex StrongArmâ„¢ Holder and Positioner, available separately.