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Figure 12: Pictorial representation of function of a programmable valve. Arrow represents the direction of CSF flow from the proximal to distal end. The two small black arrows represent thin silicon valves holding the ruby ball. At the proximal end, there is a ruby ball which lies on a thin silicon leaflet (represented by the violet membrane in the figure). This is attached to a rotor (represented by the green rectangle in the figure) which can be turned with the help of a magnet (the rotor may be adjusted based upon 5 pressure level markings). If the rotor moves clockwise, it will be easier for the ruby ball to push the silicon leaflet (lower OP). If the rotor moves anti-clockwise, it will require more effort to push the silicon leaflet to drain CSF (high OP)

Figure 12: Pictorial representation of function of a programmable valve. Arrow represents the direction of CSF flow from the proximal to distal end. The two small black arrows represent thin silicon valves holding the ruby ball. At the proximal end, there is a ruby ball which lies on a thin silicon leaflet (represented by the violet membrane in the figure). This is attached to a rotor (represented by the green rectangle in the figure) which can be turned with the help of a magnet (the rotor may be adjusted based upon 5 pressure level markings). If the rotor moves clockwise, it will be easier for the ruby ball to push the silicon leaflet (lower OP). If the rotor moves anti-clockwise, it will require more effort to push the silicon leaflet to drain CSF (high OP)