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Anesthesia depth monitor utilizing auditory stimulation and near infrared spectroscopy

A technology of near-infrared spectroscopy and anesthesia depth, which is applied in the field of anesthesia monitoring devices, can solve problems such as difficult monitoring, low specificity, and inability to identify brain disorders, and achieve the effects of simple structure, low cost, and fast response

Inactive Publication Date: 2009-01-21
JINAN UNIVERSITY
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Problems solved by technology

But both methods can be difficult to monitor when metabolism is reduced by hypothermia or anesthesia
The experiment pointed out that neither BIS nor AAI can effectively predict cardiovascular response and body movement during general anesthesia-induced endotracheal intubation
BIS and AEP index are sensitive to reflect the depth of anesthesia during anesthesia induction and operation, but the sensitivity and specificity of reflecting consciousness in the anesthesia recovery period need to be further improved. Experiments point out that EEG-based monitoring has high sensitivity but specificity. Weak enough to fail to recognize brain disturbances due to permanent damage
[0007] Therefore, until now, there is no comprehensive method for reliable, continuous and quantitative monitoring of depth of anesthesia

Method used

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  • Anesthesia depth monitor utilizing auditory stimulation and near infrared spectroscopy
  • Anesthesia depth monitor utilizing auditory stimulation and near infrared spectroscopy

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Embodiment Construction

[0023] In order to further understand the content, features and effects of the present invention, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] refer to figure 1 , figure 1 It is a structural schematic diagram of monitoring a patient to be tested using the device of the present invention. Two wavelengths of 780nm and 808nm semiconductor lasers and high-sensitivity photodiodes are used. The measurement is carried out by placing the optical fiber at the measurement position of the head of the patient to be measured. Three groups are set up, and each group uses two semiconductor lasers with different wavelengths. The two lasers are modulated with two frequencies so that they can be distinguished during signal processing.

[0025] A set of measuring probes is placed on the forehead, and the transmitting laser optical fiber 2 and receiving optical fiber 3 attached to the for...

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Abstract

The invention relates to an anesthesia detector, which comprises a signal generator, a paster, and the receiving optical fiber and transmitting laser fiber on the paster, analyzing circuit, data collecting circuit, and data analyzing system. The invention uses sound induction NIRS method to test the oxygen density of brain to test the brain metabolism, with the advantages of sound induction potential method and near-infrared laser oxygen testing method. The invention has high response as 0.1s, low cost and simple structure. And improve can improve the anesthesia quality, to judge the anesthesia depth.

Description

technical field [0001] The invention relates to an anesthesia monitoring device, in particular to an anesthesia depth monitoring device through auditory stimulation near-infrared spectroscopy. Background technique [0002] Anesthesia is the use of drugs or non-drugs to temporarily desensitize a patient's entire body or a part of the body in order to achieve painlessness. It is an important guarantee for medical operations. The depth of anesthesia is a very important index in surgical operations, and the effective monitoring of the depth of anesthesia has always been the goal pursued by anesthesiologists and biomedical engineering experts. [0003] In general anesthesia operations, the incidence rate of patients being aware of the operation is about 1% to 2%, which can cause psychological unhappiness, fear of surgery, distrust of doctors and related rebellious psychology. Therefore, it is necessary to ensure that the patient's consciousness is completely lost to avoid awaren...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/12A61B5/11A61B5/00A61B6/00A61M16/01
Inventor 李胜利谢军王小平
Owner JINAN UNIVERSITY
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