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DOA (depth of anesthesia) monitoring device

A monitoring device and technology for depth of anesthesia, which is applied in the field of depth of anesthesia monitoring devices, can solve problems such as the influence of frequency components on relative power, and achieve the effects of accurate monitoring of anesthesia depth, reducing interference, and shortening length

Active Publication Date: 2014-03-19
SHANDONG UNIV QILU HOSPITAL
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Although SFS reflects the phase matching of different frequency components to a certain extent, it is also greatly affected by the relative power of each frequency component

Method used

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  • DOA (depth of anesthesia) monitoring device
  • DOA (depth of anesthesia) monitoring device
  • DOA (depth of anesthesia) monitoring device

Examples

Experimental program
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Embodiment Construction

[0047] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0048] Example structure

[0049] Such as figure 1 As shown, a device for monitoring the depth of anesthesia includes: EEG signal acquisition electrodes; a front module, including a preamplifier module and an analog-to-digital conversion module connected in sequence; the preamplifier module is used to receive the EEG signal acquisition electrodes The collected analog EEG signal is amplified; the analog-to-digital conversion module is used to receive the analog EEG signal amplified by the pre-amplification module, and convert the analog EEG signal into a digital EEG signal ; The Fourier transform module is used to perform Fourier transform on the digital EEG signal converted by the analog-to-digital conversion module; obtain the power value of each frequency point of the EEG signal. The cortical activity calculation module receives the output data of t...

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Abstract

The invention discloses a DOA (depth of anesthesia) monitoring device which comprises an EEG (electroencephalogram) collecting electrode, a pre-arrangement module, a Fourier transform module, an Ac (activity of cortex) calculation module, an As (activity of subcortex) calculation module, a balanced DOA calculation module and a display module, wherein the pre-arrangement module comprises a pre-amplification module and an analog-digital conversion module which are connected sequentially; the Ac calculation module receives output data of the Fourier transform module and calculates subparameters of Ac; the As calculation module receives output data of the Fourier transform module and calculates subparameters of As; the balanced DOA calculation module receives subparameters output by the Ac calculation module and the As calculation module and obtains a balanced DOA with a weighted sum method; and the display module displays the balanced DOA. On the premise that the DOA monitoring accuracy in the state of pure inhalation or intravenous general anesthetics is reserved, the DOA monitoring device has the advantage that the DOA monitoring is more accurate in the state of opioid medicine composite inhalation or intravenous general anesthetics.

Description

technical field [0001] The invention relates to an anesthesia depth monitoring device. Background technique [0002] Anesthesia depth monitoring is an important work content to ensure the quality of anesthesia. Loss of consciousness is the core component of anesthesia. Due to the use of muscle relaxants, reliable clinical indicators such as the Observer's Assessment of Alertness / Sedation Scale (OAA / S) cannot be implemented. The isolated forearm technology (IFT), which temporarily blocks blood supply to the limb to preserve its command response, is the gold standard for intraoperative consciousness monitoring, but it cannot be continuously monitored throughout the anesthesia period due to the limitation of limb ischemia time. [0003] Using instruments to monitor the state of consciousness in general anesthesia in real time has become an anesthesiologist's dream. Currently, several electroencephalogram (EEG)-based anesthesia depth monitors represented by Bispectrum (BIS) ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0476
Inventor 吴琦
Owner SHANDONG UNIV QILU HOSPITAL
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