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Tester for saturation level of cerebral blood oxygen

A technology of saturation and cerebral blood oxygen, which is applied in the direction of instruments, diagnostic recording/measurement, and instruments for radiological diagnosis, etc. Unable to detect brain tissue blood oxygen saturation and other issues, to achieve the effect of eliminating the interference of background light, simple structure, and low price

Inactive Publication Date: 2002-08-28
NANKAI UNIV
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AI Technical Summary

Problems solved by technology

Because the blood volume changes with the pulse, this instrument is called a pulse oximeter. It is only suitable for use on the fingertips and earlobes, and it will be powerless for the detection of cerebral blood oxygen, muscle blood oxygen and some local blood oxygen saturation. ; Another document with the publication number CN2362122Y discloses a reflective blood oxygen saturation monitor, the sensor of which uses two light-emitting diodes and a photodiode, which is a single-receiving structure, and it is specially used for monitoring cardiac surgery. The oxygen saturation of blood in the extracorporeal circulation system can not detect the oxygen saturation of brain tissue
In short, none of the above-mentioned instruments can detect the blood oxygen saturation of brain tissue non-invasively in vitro
The main problem is the inability to examine brain data non-invasively

Method used

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  • Tester for saturation level of cerebral blood oxygen
  • Tester for saturation level of cerebral blood oxygen
  • Tester for saturation level of cerebral blood oxygen

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Embodiment Construction

[0020] The present invention will be further explained below in conjunction with the drawings:

[0021] figure 1 Among them, the sensor 2, the signal conditioner 3, the synchronous amplifier 4, the A / D converter 5, the single-chip computer system 6 and the liquid crystal display and / or the micro printer 8 are electrically connected in sequence. In addition, the single-chip system 6 sends out timing signals to control the signal conditioner and the synchronous amplifier.

[0022] figure 2 Among them, A1, A2, and A3 are 3 / 4LF444, A4 and A5 are LF442, transistors T1 and T2 are 8050 type transistors, and silicon photovoltaic cells 13, 14 are 5×5 silicon photovoltaic cells.

[0023] image 3 It is the structure diagram of the detection probe of the embodiment of the present invention. In the figure, the ultra-bright light-emitting diode 11 and the infrared light-emitting diode 12 are installed close to each other vertically, and silicon photocells 13, 14, 13 are shallow (scalp, Sku...

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Abstract

A detector for detecting the saturation level of cerebral blood oxygen is composed of probe, synchronous amplifier, A / D converter, single-chip computer system, and display. It features that two LEDs generating different wavelengthes and two light receivers with two photoelectric silicon cells are installed in its probe. The obtained data contains two parts: one is the information about superficial tissue and another is the information about superficial tissue and cerebral blood oxygen. Subtracting one part from another can obtain the information about cerebral blood oxygen. Its advantages include simple structure, high sensitivity and reliability, and low cost.

Description

Technical field [0001] The name of the present invention is a cerebral blood oxygen saturation detector, which is a non-invasive, reflective, double-beam and double-receiving detector, belonging to the technical field of medical devices. technical background [0002] At present, almost all oximeters used in clinical practice at home and abroad use a finger-clamp sensor composed of light-emitting diodes and photosensitive elements, and use the transmission detection principle to detect the blood oxygen saturation of the fingertip or earlobe volume. Because blood volume changes with pulse, this instrument is called pulse oximeter. It is only suitable for use on the fingertips and earlobe. It is powerless to detect cerebral blood oxygen, muscle blood oxygen and certain local blood oxygen saturation. ; Another document with publication number CN2362122Y discloses a reflective blood oxygen saturation monitor, the sensor uses two light-emitting diodes and a photodiode, is a single-rece...

Claims

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Application Information

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IPC IPC(8): A61B5/00A61B6/00G01N21/31G06F17/00
Inventor 乔月印仇伟红乔峰乔岭梅
Owner NANKAI UNIV
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