Aesculap, a B Braun company, has introduced a gravitational shunt valve to provide surgeons with a new treatment option for patients with hydrocephalus.
The Miethke proSA valve, which is implanted in combination with fixed or adjustable valves, allows surgeons to provide patients with different pressure settings for the lying and the upright positions, and reduce the symptoms that are experienced when intracranial pressures (ICPs) are too low or too high.
The adjustable valve provides resistance to cerebral spinal fluid (CSF) flow in the upright position and allows the upright pressure to be managed independently from the lying pressure, according to the company.
Having an adjustability range from 0-40 cmH2O, the valve also enables surgeons to manage the needs of a wide selection of patient types or patient needs, such as height or weight changes.
Aesculap president Chuck DiNardo said when the pressure setting is increased in a conventional adjustable valve system, resistance is not just increased to the upright position, but to all positions.
"This results in increased ICP in the lying position causing headaches, nausea and other symptoms," DiNardo said.
"proSA finally allows these pressures to be managed independently, providing greater patient comfort."
In addition, proSA's integrated Active-Lock MR brake helps prevent the valve from inadvertent pressure adjustments in 1.5 and 3T MRI scanners, and the need for re-adjustments after an MRI.