MR Safety and Cerebrospinal Fluid Shunt Valves | 合法醫療器材資訊網

2004年10月7日—WithregardtoMRI,theproductinsertfortheCODMANHAKIMProgrammableValvestates:Note:Remembertoverifyvalvepressuresettingafter ...

Hydrocephalus is the accumulation of cerebrospinal fluid in the brain, resulting from increased production or, more commonly, pathway obstruction or decreased absorption of the fluid. CSF shunts have been used for decades for the treatment of hydrocephalus. CSF shunting involves establishing an accessory pathway for the movement of CSF in order to bypass an obstruction of the natural pathways.

The shunt is positioned to enable the CSF to be drained from the cerebral ventricles or subarachnoid spaces into another absorption site (e.g., the right atrium of the heart or the peritoneal cavity) through a system of small catheters. A regulatory device, such as a valve, may be inserted into the pathway of the catheters.

In general, the valve keeps the CSF flowing away from the brain and moderates the pressure or flow rate. Some valves are fixed pressure valve...