Neurol India Close
 

Figure 2: (a) The schematic diagram; and, (b) the actual photograph of the slit and spring valve shunt. The proximal slit valve in the shunt chamber is girdled by a stainless steel spring, which helps in maintaining the opening pressure. Thus, when the pressure differential is high, as in the standing posture of the patient, the spring over the valve prevents the valve from overstretching, thus preventing overdrainage of cerebrospinal fluid. In recumbent position of the patient, the spring maintains an optimum pressure on the valve and keeps its open, thus facilitating cerebrospinal fluid drainage even at a minimum pressure differential. The distal slit valve at the distal end of the peritoneal end further prevents overdrainage

Figure 2: (a) The schematic diagram; and, (b) the actual photograph of the slit and spring valve shunt. The proximal slit valve in the shunt chamber is girdled by a stainless steel spring, which helps in maintaining the opening pressure. Thus, when the pressure differential is high, as in the standing posture of the patient, the spring over the valve prevents the valve from overstretching, thus preventing overdrainage of cerebrospinal fluid. In recumbent position of the patient, the spring maintains an optimum pressure on the valve and keeps its open, thus facilitating cerebrospinal fluid drainage even at a minimum pressure differential. The distal slit valve at the distal end of the peritoneal end further prevents overdrainage