Drainage system for cerebrospinal fluid
First Claim
1. A drainage system for the drainage of cerebrospinal fluid (CSF), comprisinga CSF feed line,a pressure sensor, wherein the pressure sensor is operable to determine pressure in the CSF feed line, or CSF pressure intracorporeally,a pump that automatically pumps out the cerebrospinal fluid during drainage as a function of one or more preset operating parameters and one or more measured operating values,and a detection means operable to detect the flow or volume of CSF pumped out, wherein the one or more measured operating values comprises at least the pressure determined in the CSF feed line or the CSF pressure determined intracorporeally, wherein the preset operating parameters and the measured operating values allow for an automated control of the drainage process.
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Accused Products
Abstract
The object of providing a cerebrospinal fluid drainage system 1 which reacts precisely to changes in pressure in the cerebrospinal fluid, with ease of operation, is achieved by the present invention in that a pump 5 is used for draining the cerebrospinal fluid (liquor), wherein operating measured values supplied by sensors act as controlled variable for the operation of the pump. The pressure in the liquor line currently measured by a pressure sensor 10, the liquor pressure in the intracranial cavity being treated, measured intracorporeally by a pressure sensor, and/or the volume of liquor already pumped out, as operating measured value, can, for example, serve as the basis for operational control of the pump of the liquor drainage system. The liquor drainage system according to the invention has the advantage that the liquor is drained not only simply on the basis of the excess pressure in the intracranial cavity being treated, but is actively pumped out of the intracranial cavity in a controlled manner, in particular with constant measurement of the liquor pressure. In this way the pumping capacity can be regulated depending on requirement and the drainage pressure or the liquor pressure kept reliably within a specific pressure range.
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Citations
50 Claims
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1. A drainage system for the drainage of cerebrospinal fluid (CSF), comprising
a CSF feed line, a pressure sensor, wherein the pressure sensor is operable to determine pressure in the CSF feed line, or CSF pressure intracorporeally, a pump that automatically pumps out the cerebrospinal fluid during drainage as a function of one or more preset operating parameters and one or more measured operating values, and a detection means operable to detect the flow or volume of CSF pumped out, wherein the one or more measured operating values comprises at least the pressure determined in the CSF feed line or the CSF pressure determined intracorporeally, wherein the preset operating parameters and the measured operating values allow for an automated control of the drainage process.
Specification