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Figure 1: Schematic illustrations of clipping the intercavernous sinus with titanium clips by using two different clip appliers in transsphenoidal surgery. The intercavernous sinus is located in the potential space between the endo-osteal layer and the meningeal layer of the sellar dura (arrow), which is almost perpendicular to the longitudinal axis. (a) The intercavernous sinus cannot be clipped by using the regular clip applier. (b) The intercavernous sinus can be clipped by using the pistol-shaped applier, whose tip has a fixed angle of 70° upward to the shaft

Figure 1: Schematic illustrations of clipping the intercavernous sinus with titanium clips by using two different clip appliers in transsphenoidal surgery. The intercavernous sinus is located in the potential space between the endo-osteal layer and the meningeal layer of the sellar dura (arrow), which is almost perpendicular to the longitudinal axis. (a) The intercavernous sinus cannot be clipped by using the regular clip applier. (b) The intercavernous sinus can be clipped by using the pistol-shaped applier, whose tip has a fixed angle of 70° upward to the shaft