The first successful hysteroscopy was reported by Pantaleoni in 1869. In the last two decades, technical developments led to major improvements in diagnostic hysteroscopy and hysteroscopic surgery. Diagnostic hysteroscopy is currently the “gold standard” investigation of diseases involving the uterine cavity (Fraser 1993; Nagele et al. 1996) and hysteroscopic surgery is currently the standard treatment of intrauterine pathology, such as endometrial polyps (Polena et al. 2005; Preutthipan and Herabutya 2005; Savelli et al. 2003), submucous fibroids (Rosati et al. 2008; Timmermans and Veersema 2005), uterine septa (Colacurci et al. 2002; Perino et al. 1987) and intrauterine adhesions (Al-Inany 2001). Appropriate instrumentation, together with distension media like CO2, saline and nonsaline solutions are of vital importance in hysteroscopic procedures.