Non-contact cerebrospinal fluid pulse pressure wave monitoring device based on magnetic induction

Abstract

The invention provides a non-contact cerebrospinal fluid pulse pressure wave monitoring device based on magnetic induction. The non-contact cerebrospinal fluid pulse pressure wave monitoring device based on magnetic induction comprises an AC signal source unit, a sensor unit, a differential amplifier and a signal acquisition and processing unit. The AC signal source unit is used for generating an excitation signal, sending the excitation signal to the sensor unit, generating an excitation magnetic field and a reference signal and sending the reference signal to the signal acquisition and processing unit. The sensor unit is placed at the cisterna magna under the occipital bone and comprises an annular excitation coil and two detection coils, wherein the two detection coils are located above and below the excitation coil respectively and coaxial with the excitation coil, and the sensor unit is used for emitting excitation signals and detection and induction signals. The differential amplifier is used for carrying out differential amplification on the signals of the two detection coils to offset a main magnetic field in the detection signals. The signal acquisition and processing unit is used for processing the collected signals to obtain cerebrospinal fluid pulse pressure waves.

Description

technical field [0001] The invention belongs to the technical field of biomedical medical equipment, and in particular relates to a non-contact magnetic induction cerebrospinal fluid pulse pressure wave monitoring device in the fields of neurosurgery, medical care and medical evaluation. Background technique [0002] The cerebrospinal fluid pulse pressure wave fluctuates up and down with the heart beat cycle on the basis of the intracranial pressure. The change of the cerebrospinal fluid pulse pressure wave actually reflects the intracranial volume caused by the fluctuation of intracranial blood volume during the heartbeat process. Changes in intracranial pressure caused by the corresponding fluctuations in intracranial compliance. The compliance of intracranial pressure has important clinical value in the diagnosis, monitoring, and judgment of many craniocerebral diseases. Monitoring CSF pulse pressure waves as a direct response to brain compliance is equally significant. ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the shortcomings of the traditional cerebrospinal fluid pulse pressure wave monitoring system, such as invasive detection and traditional non-invasive monitoring methods with low accuracy, and propose a non-contact cerebrospinal fluid pulse pressure wave monitoring device based on magnetic induction

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