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Device and method for detecting absolute amount of blood oxygen saturation of local brain tissue

A detection device and brain tissue technology, applied in the field of biomedical engineering, can solve problems such as the inability to measure absolute quantities and the inability to reflect the differences between patients and normal people, and achieve the effects of improving portability, signal stability, and easy methods

Inactive Publication Date: 2014-04-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

In the technical invention patent of using near-infrared spectroscopy to detect oxygen in human tissue, Chinese invention patent 200310113534.7 proposes a method for detecting the oxygen saturation of local brain tissues of newborns under oxygen inhalation stimulation. The relative measurement of blood oxygen saturation changes under stimulation cannot be measured in absolute quantities, so it cannot reflect the difference between patients and normal people, or the difference between lesion areas and normal areas

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  • Device and method for detecting absolute amount of blood oxygen saturation of local brain tissue
  • Device and method for detecting absolute amount of blood oxygen saturation of local brain tissue
  • Device and method for detecting absolute amount of blood oxygen saturation of local brain tissue

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0040] exist image 3 1 is the light source os (an LED that can emit at least three wavelengths of near-infrared light); 2 is the distance from the light source is ρ 1 The photosensitive detector p1; 3 is the distance ρ from the light source 2 The photosensitive detector p2 (two photosensitive detectors like 2 and 3 form a pair of photosensitive detector channels); 4 is the first layer of tissue, and is represented by T1; 5 is the second layer of tissue, and is represented by T2; 6 It is the third layer of organization and is represented by T3. We use this device to measure the absolute value of blood oxygen saturation in human brain tissue. Here, T1 is skin, T2 is skull and cerebrospinal fluid, and T3 is brain tissue (white and gray matter). b1 and b2 are the trajectory of the photon. By changing the distance between the light source and ...

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Abstract

The invention discloses a device and a method for detecting the absolute amount of the blood oxygen saturation of local brain tissue. The device comprises an optical probe and a controller; the optical probe is used for emitting the near-infrared light to the surface of the local brain tissue to be detected and detecting the light intensity which is reflected from the surface of the local brain tissue to be detected; the controller is used for controlling the emission of the optical probe and obtaining optical signals. According to the device and the method for detecting the absolute amount of the blood oxygen saturation of the local brain tissue, a multi-wavelength light source is selected, continuous waves are utilized, and accordingly the price is low, the signals are stable, the method is easy to implement, and the rapid popularization can be achieved; a common photosensitive detector is adopted and accordingly the high measurement sensitivity is ensured and the portability of the instrument is greatly improved; an absolute value of the blood oxygen saturation of biological tissue can be detected noninvasively, timely, rapidly and accurately and accordingly the differences between the lesion area and the normal area or the differences between patients and normal persons can be accurately reflected.

Description

technical field [0001] The invention relates to the technical field of biomedical engineering, in particular to a detection device and a detection method for the absolute amount of blood oxygen saturation in local brain tissue. Background technique [0002] Measuring the concentration of blood oxygen saturation in brain tissue and observing its change over time will help to understand the absolute value concentration of blood oxygen saturation in brain tissue in patients with brain diseases and patients during surgery, and provide a basis for doctors' diagnosis . [0003] At present, researchers generally use optical methods to non-invasively detect the parameters of blood oxygen saturation in human tissues. In the technical invention patent of using near-infrared spectroscopy to detect oxygen in human tissue, Chinese invention patent 200310113534.7 proposes a method for detecting the oxygen saturation of local brain tissues of newborns under oxygen inhalation stimulation. ...

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Application Information

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IPC IPC(8): A61B5/1455
Inventor 李婷赵越孙云龙李凯
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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