M.flow Adjustable Flow Regulating Valve

SPECS

Product Category: Cranial Products/CSF Management/CSF Shunts

Shunt System Type: Ventriculoperitoneal (VP) Shunts , Pediatric Specific Valves

Valve Type: Programmable/ Adjustable Valves , Flow Regulated Valves

MRI Compatibility (Locking): MRI 1.5T Compatible , MRI 3T Compatible

Antisiphon Properties: Flow Control Antisiphon

DESCRIPTION

The Miethke M.flow valve by Aesculap is an MRI compatible to 3T, adjustable, position independant flow regulating valve for the treatment of hydrocephalus in pediatic and adult patients. It operates on the principle of Poiseuille's law of laminar flow, in which flow is inversly proportional to the tubes length. For example, doubling the tubes length, halves the flow (assuming constant pressure and radius of the tube). Using this principle, the length of the channel traveled by the CSF can be varied by the rotation of the internal cam to alter the distance of travel, thereby altering flow rates.

Features:

  • Titanium construction 
  • MRI compatible to 3T
  • Adjustable flow regulated valve using Poiseuille's law of laminar flow, where doubling the length of the tube, halves the flow.
  • Flow settings between 0-10, with an off setting measured at a standard flow rate of 20 ml/hr results in the following pressures:
    • 0: 2.5 cmH2O
    • 2: 9 cmH2O
    • 6: 22 cmH2O
    • 10: 35 cmH2O
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