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Method for detecting newborn baby partial tissue oxygen saturation under oxygen absorption stimulation

A technology of local tissue and detection method, applied in scattering characteristic measurement, color/spectral characteristic measurement, blood characterization device, etc., can solve problems such as inability to obtain results, and achieve the effect of improving detection sensitivity

Active Publication Date: 2004-11-10
TSINGHUA UNIV
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Problems solved by technology

In principle, applying the classical Lambert-Beer law directly under strong scattering does not yield any correct results

Method used

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  • Method for detecting newborn baby partial tissue oxygen saturation under oxygen absorption stimulation
  • Method for detecting newborn baby partial tissue oxygen saturation under oxygen absorption stimulation
  • Method for detecting newborn baby partial tissue oxygen saturation under oxygen absorption stimulation

Examples

Experimental program
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Embodiment Construction

[0036] Under the condition of short-term inhalation of pure oxygen, the parameter method for detecting tissue blood oxygen saturation and its change contains the following steps in sequence.

[0037] ① Prepare an oxygen mask or an oxygen ventilator, keep the newborn in a quiet state, record the basic value when it is not inhaling oxygen, detect and record the OD value at each distance.

[0038] ②Based on the test results in ①, calculate the local tissue oxygen saturation rSO 2 , display and save the result.

[0039] ③Inhale oxygen for 60 seconds with an oxygen mask or directly with an oxygen ventilator at a flow rate of 2L / min, record and display the rSO 2 .

[0040] ④ After inhaling oxygen for 60 seconds, remove the oxygen mask or oxygen ventilator, and record the local tissue oxygen saturation rSO for 120 seconds 2 , end the test after saving the data.

[0041] The step ① of detecting the parameters of the tissue oxygen saturation and its variation range under the condit...

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Abstract

The invention is an oxygen saturation of blood in partial tissue in the brain of a newborn baby under the stimulation of absorbing oxygen, and its characteristic: it takes three photoelectric receiving tubes placed on the same straight line and a light source containing two LEDs as sensor, based on that in the tissue oxygen metabolism, oxyhemoglobin and reduced hemoglobin have different optical spectrum properties, and according to the light absorbing and scattering laws in the tissue, calculating the oxygen saturation rSO2 of blood in partial tissue, and on the condition of short-time pure oxygen absorbing, able to detect and calculate the variation of oxygen saturation of blood in partial tissue of a newborn baby. The three photoelectric receiving tubes are arranged at regular intervals, and the two LEDs can emit red and near-infrared lights, respectively. The invention can sensitively detect the oxygen saturation of blood in partial tissue of a newborn bay or bay suffering from diseases and its variation course.

Description

technical field [0001] The invention relates to a method for detecting the oxygen saturation of local brain tissues of newborns under oxygen inhalation stimulation, which belongs to the technical field of biomedical engineering, and in particular relates to the technical field of blood oxygen parameter detection of local brain tissues of newborns. Background technique [0002] Monitoring the blood supply of the local brain tissue of newborns and observing its changes over time has important definitions for the monitoring of the disease process and the evaluation of treatment effects for infants with hypoxic-ischemic encephalopathy. [0003] To determine the oxygen metabolism status of local tissues, there are mainly direct measurement methods of invasive tissue oxygen partial pressure based on electrochemical principles and non-destructive detection methods based on optical measurement. The optical method can complete non-invasive monitoring, which is convenient, safe, stabl...

Claims

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Application Information

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IPC IPC(8): A61B5/145G01N21/25G01N21/47
Inventor 黄岚丁海曙王广志李岳赵军腾轶超
Owner TSINGHUA UNIV
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