Quantitative monitoring index equipment for reviving patient after general Anesthesia operation

Abstract

The invention discloses a device for quantitative monitoring indicators of a patient with awareness during the general anesthesia operation, which comprises: an EEG signal surface electrode, a filter circuit, an EEG amplification circuit, a brain evoked potential amplifier, an analog-to-digital converter, a computer for calculating the brain 40Hz auditory evoked steady state response index and a sound stimulating circuit. Two brain evoked potential signals and an EEG signal curve which are generated by the computer are stored in a data cache; the sound stimulating circuit comprises: a 40Hz sound modulation circuit and a sound amplification circuit; the computer is synchronous with four sound stimulus, two brain evoked and EEG digital signals are obtained every 100ms and then the data cache is cleared. The device has the following advantages and positive effects: the 40Hz auditory steady state technology is different from other auditory evoked potentials, the major advantage thereof is that the rhythm of the stimulus is synchronous with the position of the wave peak of auditory middle latency, thus forming the resonance effect, improving the signal intensity and regularity, allowing the extraction of the evoked potential to be easier and strengthening the probability of the clinical practical application of the evoked potential technology.

Description

technical field [0001] The invention relates to a medical device for monitoring the indicators known in the operation during the general anesthesia process of the operation, and the patient is under the stimulation state of the operation. Background technique [0002] Using evoked potential technology to study the degree of brain sedation is an effective means. It is a hot method to study the state of brain function in the world in recent years. The evoked potential is the potential change of the cerebral cortex, some of which are expressed as the result of processing the information obtained by the receiving organ, reflecting the level of consciousness of the person. By extracting the evoked potential signal and observing its changes, we can study the current level of consciousness of a person, especially for the level of consciousness of a person under anesthesia. The evoked potential is a good way to objectively reflect the degree of sedation. [0003] Various nocicepti...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a quantitative monitoring index device known by patients under general anesthesia in surgery, to solve the technical problem of quantitatively reflecting the quantitative monitoring indicators known to patients during general anesthesia in surgical operations by using the method of 40Hz listening to steady-state evoked potentials

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