Safety TopicArticle | 合法醫療器材資訊網

由CCPValve著作—Description.TheCODMANHAKIMProgrammableValve(CSFshuntvalve,Codman,aJohnson&JohnsonCompany,Raynham,MA)includesavalvemechanism ...

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. Cerebrospinal fluid (CSF) shunts have been used for decades for the treatment of hydrocephalus. A CSF shunt involves establishing an accessory pathway for the movement of CSF to bypass an obstruction of the natural pathways.

The shunt is positioned to enable the CSF to be drained from the cerebral ventricles or sub-arachnoid 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 valves (i.e., monopressure valves) and o...