Micro devices for a cerebrospinal fluid (CSF) shunt system
نویسندگان
چکیده
This paper reports a novel cerebrospinal fluid (CSF) shunt system for the hydrocephalus patients. The CSF shunt system consists of a micro telemetry pressure sensor, an electromagnetic micropump and a controller. The pressure sensor has a flexible p+ diaphragm and a planar copper coil that construct an LC resonant circuit. The cerebrospinal pressure is measured from the phase shift at the resonance frequency. The micropump consists of an actuator diaphragm and a pair of passive valves. Each device is fabricated by micromachining technology and tested to obtain the characteristic. The feasibility of the proposed shunt system is evaluated with the in vitro performance test. © 2003 Elsevier B.V. All rights reserved.
منابع مشابه
A Giant Abdominal Cerebrospinal Fluid Pseudocyst
Background and Aim: Ventriculoperitoneal shunt (VPS) is the most commonly used procedure for treatment of hydrocephalus in children. Abdominal cerebrospinal fluid pseudocyst is a rare complication but potentially fatal. The pathogenesis of this complication remains unclear. This complication should be considered during differential diagnosis of an abdominal mass. Our aim is to report how large ...
متن کاملCerebrospinal fluid shunt infection: a prospective study of risk factors.
OBJECT Hydrocephalus is a common condition of childhood that usually requires insertion of a cerebrospinal fluid (CSF) shunt. Infection is one of the most devastating complications that may arise from the presence of CSF shunts. In this study, the authors prospectively analyzed perioperative risk factors for CSF shunt infection in a cohort of children. METHODS Between 1996 and 1999, 299 eligi...
متن کاملCerebral Hemodynamics and Cerebrospinal Fluid Flow in the Presence of Choroid Plexus Papilloma
Quantification of the cerebrospinal fluid (CSF) system may be useful for distinguishing relative treatments in the presence of choroid plexus papillomas (CPPs). To study the CSF system, mathematical models and simulations detailing the cerebral blood flow and CSF filtration were constructed to represent a normal brain, a brain with CPP located in the left lateral ventricle, and a brain with CPP...
متن کاملCerebrospinal fluid nerve growth factor and total protein concentration in the children with meningitis
Meningitis is one of the most common infectious cerebral nervous system (CNS), defined as an inflammation of the meninges. It is clinically categorized into a chronic and acute based on the acuity of symptoms. Vomiting, bulging fontanel and fever are the main symptoms in the patients with meningitis. Bacterial meningitis is a severe, potentially life-threatening infection that is associated wit...
متن کاملA CSF Shunt System for Liquorpheresis and CSF Replacement
Liquorpheresis (CSF filtration) comprises a therapeutical approach that has been proposed to treat several neurological conditions where antibodies, inflammatory mediators or abnormal peptides are the cause or play an important role in the pathogenesis of the disease. Continuous or intermittent CSF replacement may be an alternative approach not explored so far. Here, we review previous experien...
متن کامل