Neurosurgery Start › PMH products › Neurosurgery produtos: 2 Derivation for hydrocephalus sphera duo Sphera Duo valves are designed for precise control of intraventricular cerebral pressure. Adult and child sizes feature a low-profile implant design and a flexible body with an anatomical shape that follows the curvature of the skull. They are made of medical grade transparent silicone with an internal polysulfone structure. They have a pumpable central reservoir with a rigid base to protect against perforations in the puncture and CSF collection procedures. The neonatal size does not have a pumping chamber, as its design prioritizes the minimum implant profile and volume. The system, when assembled with a reservoir coupled to the ventricular catheter, enables the puncture and collection of CSF. SPHERA MECHANISM: PRECISE OPERATIONThe operating mechanism is composed of a ball and conical seat made of ruby ??and a stainless steel spring. The perfect fit between ball and seat allows you to safely define the opening and closing pressures of the system, providing precision in the control of intracranial pressure. Adult and child sizes feature dual pressure control system housed in inlet and outlet connectors. The Neonatal model houses only one pressure control mechanism. All sizes come in four pressure ranges: high, medium, low and extra-low to meet individual patient needs. The flow and pressure indications printed on the valve body are radiopaque and allow visualization in imaging exams after implantation. View more Variant Reference Unit./Box Qty./Box ADM10223D 1 Add + Request more information Sphera pro Sphera Pro is a cerebral bypass system for intraventricular pressure control with a programmable valve. The product was developed to provide PRECISION in pressure control, SAFETY against deprogramming and EASE in pressure adjustment. The valve has 08 different pressures, and pressure adjustment can be performed whenever necessary by a non-invasive and painless magnetic device to the patient . Security against deprogramming due to the actuation of external magnetic fields is provided by an exclusive double locking system, which maintains the valve at the chosen pressure even when the patient is submitted to MR exams of up to 3 teslas. The Sphera Pro system can be supplied in together with the Sphera Grav antigravity device, which acts to control intraventricular pressure when the patient changes from horizontal to vertical position, preventing overdrainage, especially in patients with Normal Pressure Hydrocephalus (HPN). The valve and the reservoir are made of polysulfone with silicone coating and titanium connectors. The system's ventricular and peritoneal catheter are made of transparent silicone with a radiopaque thread, which allows visualization in imaging exams and minimizes the occurrence of calcification in its path. View more Variant Reference Unit./Box Qty./Box UNPRO10215R 1 Add + Request more information