CN210990285U

CN210990285U - Electroencephalogram signal monitoring quality stabilizing system for anesthesia depth monitor

Info

Publication number: CN210990285U
Application number: CN201921315545.6U
Authority: CN
Inventors: 王立辉
Original assignee: Shenzhen Geyang Medical Technology Co ltd
Current assignee: Shenzhen Geyang Medical Technology Co ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-07-14
Anticipated expiration: 2029-08-14

Abstract

The utility model discloses an anesthesia depth monitor is with brain electricity signal monitoring quality stabilization system relates to brain electrical signal monitoring technology field, including the brain electrode, enlarge filtering module, signal processing module, display, power module, the brain electrode, enlarge filtering module, signal processing module, display connect gradually and all with power module connects, the utility model discloses can enlarge filtering process with the brain electrical signal that the brain electrode gathered, obtain required steady quality's brain electrical signal to convert brain electrical signal to analog signal, show on the display with the display mode of anesthesia depth index (CSI), be favorable to anesthesia depth monitor in the use, can be directly perceived, accurate monitoring patient's calm, degree of hypnotizing.

Description

Electroencephalogram signal monitoring quality stabilizing system for anesthesia depth monitor

Technical Field

The utility model relates to an EEG signal monitoring technology field specifically is an anesthesia depth monitor is with brain electricity signal monitoring stable quality system.

Background

The anesthesia depth monitor is used for monitoring the anesthesia depth of a general anesthesia patient in an operation, can display the sedation and hypnosis degree of the patient in real time, is in the range of 100-0 (from completely clear-headed to no brain electric signal), is attached to the head of a human body through brain electrodes to acquire brain electric signals, is displayed on a display by a number (anesthesia depth index CSI) of 0-100, and is used for indirectly displaying the sedation and hypnosis degree of the human body after anesthesia. However, in the process of acquiring the electroencephalogram signals, the signal degree is weak, interference signals are doped, and great interference is generated on the monitoring results, so that the quality of monitoring the electroencephalogram signals is very important.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing an anesthesia depth monitor is with brain electricity signal monitoring stable quality system.

The utility model aims at realizing through the following technical scheme: the utility model provides an anesthesia depth is brain electricity signal monitoring quality stabilization system for monitor, includes brain electrode, enlargies filtering module, signal processing module, display, power module, brain electrode, enlarge filtering module, signal processing module, display connect gradually and all with power module connects.

In a preferred embodiment, the amplifying and filtering module comprises a filter, an emitter follower, a preamplifier, a secondary amplifier and an anti-aliasing filter, the emitter follower, the preamplifier, the secondary amplifier and the anti-aliasing filter are connected in sequence, and the filter is connected with the brain electrode.

In a preferred embodiment, the filter is a high pass filter.

In a preferred embodiment, the signal processing module comprises an analog-to-digital converter, a CP L D controller, a DSP data processor, and a data memory, the analog-to-digital converter is connected to the DSP data processor and the data memory through the CP L D controller, respectively, and the analog-to-digital converter is connected to an output of the anti-aliasing filter, and an output of the DSP data processor is connected to the display.

The utility model has the advantages that:

the utility model discloses an emitter follower provides the input impedance of T omega level for preamplifier, filter most interfering signal and the remaining small part interfering signal of decay of very big degree in the EEG through high pass filter and anti-aliasing filter for the EEG quality of output is stable, and convert EEG into EEG digital signal through analog to digital converter and DSP data processor and carry out audio-visual demonstration, be favorable to anaesthetizing the depth monitoring appearance in the use, accurate monitoring patient's calm, the degree of hypnotizing.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

FIG. 1 is a flow chart of a system for monitoring quality stabilization of electroencephalogram for an anesthesia depth monitor according to an embodiment of the present invention.

In the figure:

1. the device comprises a brain electrode, a 2 amplification and filtering module, a 201 filter, a 202 emitter follower, a 203 preamplifier, a 204 secondary amplifier, a 205 anti-aliasing filter, a 3 signal processing module, a 301 analog-to-digital converter, a 302 CP L D controller, a 303 DSP data processor, a 304 data memory, a 4 display, a 5 power supply module.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The invention will be further described with reference to the drawings and specific examples.

As shown in fig. 1, the utility model discloses an anesthesia depth monitor is with brain electricity signal monitoring quality stable system, include:

the brain electrode 1 is used for collecting brain signals;

the amplification filtering module 2 is used for carrying out amplification filtering processing on the brain signals collected by the brain electrode 1 to obtain the required brain electrical signals;

the signal processing module 3 is used for converting the electroencephalogram signals output by the amplifying and filtering module 2 into electroencephalogram digital signals;

the display 4 is used for displaying the electroencephalogram digital signals output by the signal processing module 3;

and the power supply module 5 is used for supplying power to the brain electrode 1, the amplification and filtering module 2, the signal processing module 3 and the display 4.

In a specific embodiment, the amplification and filtering module 2 includes a filter 201, an emitter follower 202, a preamplifier 203, a secondary amplifier 204, and an anti-aliasing filter 205, the filter 201, the emitter follower 202, the preamplifier 203, the secondary amplifier 204, and the anti-aliasing filter 205 are connected in sequence, and the filter 201 is connected with the electroencephalograph 1;

the filter 201 is used for filtering most of interference signals in brain signals acquired by the brain electrode 1 to obtain brain signals, and the filter 201 adopts a high-pass filter to filter unnecessary low-frequency interference in the brain signals and enable high-frequency signals to pass through;

the emitter follower 202 is used for improving the input impedance of the preamplifier 203, because when the input impedance of the preamplifier 203 is far greater than the external impedance, the influence of the external impedance on the signal to noise ratio can be reduced, and further the utility model has the characteristics of high input impedance, low noise and the like, and accords with the characteristics of electroencephalogram signals;

the embodiment of the utility model provides an in, L M6144 is adopted to preamplifier 203's model, for four ways low-power consumption 10MHZ rail-to-rail I/O operational amplifier circuit, can drive great capacitive load and can not appear oscillating, and has high common mode rejection ratio, can reduce the influence of noise, and AD8544 is adopted to secondary amplifier 204's model, for four ways rail-to-rail I/O single power amplifier, carries out the secondary amplification to the EEG signal.

The anti-aliasing filter 205 is used for filtering the electroencephalogram signals amplified by the preamplifier 203 and the secondary amplifier 204 to pass through the electroencephalogram signals and attenuate interference signals, and the anti-aliasing filter 205 is a low-pass filter and is used for filtering useless high-frequency electroencephalogram signals, and is matched with the filter 201 to intercept the needed electroencephalogram signals and input the electroencephalogram signals into the signal processing module 3.

In a specific embodiment, the signal processing module 3 includes an analog-to-digital converter 301, a CP L D controller 302, a DSP data processor 303, and a data memory 304, where the analog-to-digital converter 301 is connected to the DSP data processor 303 and the data memory 304 through the CP L D controller 302;

the analog-to-digital converter 301 adopts the model P L C16L C770 and is used for converting the electroencephalogram signals into electroencephalogram digital signals;

the CP L D controller 302 is used for sending the electroencephalogram digital signals to the data memory 304 for storage and sending to the DSP data processor 303 for further processing;

the DSP data processor 303 is configured to process the electroencephalogram digital signal to form an analog signal, and send the analog signal to the display 4 for display, where the display result is an anesthesia depth index CSI, that is, a digital display with 0 to 100 is used, and the corresponding clinical status after anesthesia is as follows:

the working principle is as follows:

the embodiment of the utility model provides an in, attach brain electrode 1 in order to gather brain signal at the scalp, brain signal transmits the interference signal of filtering 201 for the wave filter subsequently, obtain EEG signal, subsequently, loop through emitter follower 202, preamplifier 203, secondary amplifier 204, anti-aliasing filter 205 and amplify filtering, obtain required EEG signal frequency range, then, convert EEG signal into EEG digital signal through analog-to-digital converter 301, transmit data memory 304 through CP L D controller 302 and save, transmit DSP data processor 303 simultaneously, convert EEG digital signal into analog signal and show the clinical state after using anesthesia in display 4 with the digital display mode of anesthesia depth index (CSI).

Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides an anesthesia depth is electroencephalogram signal monitoring quality stable system for monitor which characterized in that: the brain electrode, the amplifying and filtering module, the signal processing module and the display are sequentially connected and are all connected with the power supply module.

2. The electroencephalogram signal monitoring quality stabilizing system for the anesthesia depth monitor according to claim 1, characterized in that: the amplifying and filtering module comprises a filter, an emitter follower, a preamplifier, a secondary amplifier and an anti-aliasing filter, wherein the filter, the emitter follower, the preamplifier, the secondary amplifier and the anti-aliasing filter are sequentially connected, and the filter is connected with the brain electrode.

3. The electroencephalogram signal monitoring quality stabilizing system for the anesthesia depth monitor according to claim 2, characterized in that: the filter is a high pass filter.

4. The system for monitoring the quality of the electroencephalogram signal of the anesthesia depth monitor as claimed in claim 2, wherein the signal processing module comprises an analog-to-digital converter, a CP L D controller, a DSP data processor and a data memory, the analog-to-digital converter is respectively connected with the DSP data processor and the data memory through the CP L D controller, the analog-to-digital converter is connected with the output end of the anti-aliasing filter, and the output end of the DSP data processor is connected with the display.