| 摘要 |
A cerebral spinal fluid (CSF) shunt is provided, comprising a ventricular cavity for receiving CSF in a drainage chamber for passing the CSF to a patient's abdominal cavity. An anti-syphon valve controls CSF flow from the ventricular cavity to the drainage chamber. The valve utilizes a thin, flexible portion of the ventricular cavity which operates an underlying pressure control membrane. The membrane overlies a valve opening that permits CSF flow from the ventricular cavity into the drainage chamber. In place of the membrane, a spring-biased ball can be used to open and close the valve opening.
|
