CODMAN CERTAS Programmable Valves, central nervous system shunt, models as follows: || 82-8800 In Line Valve Only || 82-8801 In Line Valve with Catheter and Accessories || 82-8802 In Line Valve with Unitized Catheter and Accessories || 82-8803 In line Valve with Unitized BACTISEAL Catheter and Accessories || 82-8804 In Line Valve only with SIPHONGUARD Device || 82-8805 In Line Valve with SIPHONGUARD Device, Catheter and Accessories || 82-8806 In Line Valve with SIPHONGUARD, Unitized Catheter and Accessories || 82-8807 In Line Valve with SIPHONGUARD Device, Unitized BACTISEAL Catheter and Accessories || 82-8850 Certas Therapeutic Management System