Pictured copyright © 2014 Congress of Neurological Surgeons, Chohan M.O. et al

Figure 1: Schematic of the Hummingbird Synergy Duo device, the ventricular catheter is passed through the fixed bolt mechanism. This allows drainage of CSF and ventricular ICP monitoring while the parenchymal portion of that same catheter relays parenchymal ICP values through a pressure sensing membrane. For illustration purposes, two probes have been placed in the auxiliary ports, which can be used for further multimodality monitoring.