Addressing the siphoning effect in new shunt designs by decoupling the activation pressure and the pressure gradient across the valve

Journal of Neurosurgery. Pediatrics
Tobias A MatteiJulian J Lin

Abstract

Although several improvements have been observed in the past few years in shunt technology, currently available systems still present several associated problems. Among these, overdrainage along with its complications remains one of the great challenges for new shunt designs. To address the so-called siphoning effect, the authors provide a practical example of how it is possible to decouple the activation pressure and the pressure gradient across the valve through a 3-key component system. In this new shunt design, the flow is expected to depend only on the intracranial pressure and not on the pressure gradient across the valve, thus avoiding the so-called siphoning effect. The authors used computer models to theoretically evaluate the mechanical variables involved in the operation of the newly designed valve, such as the fluid's Reynolds number, proximal pressure, distal pressure, pressure gradient, actual flow rate, and expected flow rate. After fabrication of the first superscaled model, the authors performed benchmark tests to analyze the performance of the new shunt prototype, and the obtained data were compared with the results predicted by the previous mathematical models. The final design of the new paddle wheel valve w...Continue Reading

References

May 1, 1994·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·K TokoroH Kanno
Jan 13, 2001·Pediatric Neurosurgery·J KestleN MacNeil
Aug 13, 2002·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·Ullrich Meier, Dieter Kintzel
Feb 7, 2006·Pediatric Neurology·Samuel R BrowdJohn R W Kestle
Jul 7, 2007·Neurosurgical Focus·Khalid H Kurtom, Gary Magram
Feb 9, 2008·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·Harold L Rekate
Jun 3, 2008·Acta Neurologica Scandinavica·G PetrellaZ Czosnyka
Dec 15, 2010·Neurosurgery·Karl Roessler, Iris Zachenhofer
Jan 3, 2012·Journal of Neurosurgery. Pediatrics·Joshua E Medow, Christopher C Luzzio

❮ Previous
Next ❯

Citations

Feb 19, 2013·Journal of Neurosurgery. Pediatrics·Tobias A Mattei, Julian J Lin

❮ Previous
Next ❯

Software Mentioned

- Chart
LabVIEW
CATIA ( Aided 3D Interactive Application Systèmes
Engineering Equation Solver (

Related Concepts

Related Feeds

CSF & Lymphatic System

This feed focuses on Cerebral Spinal Fluid (CSF) and the lymphatic system. Discover the latest papers using imaging techniques to track CSF outflow into the lymphatic system in animal models.