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Oxyhemoglobin saturation detection device

A detection device and saturation technology, which can be used in diagnostic recording/measurement, medical science, diagnosis using light, etc. It can solve the problems of large drift, inaccurate and poor consistency of blood oxygen saturation measurement, and achieve the suppression of temperature drift , improve consistency and accuracy, and reduce the effect of aliasing chance

Inactive Publication Date: 2015-07-08
SHANGHAI DRAEGER MEDICAL INSTRUMENT CO LTD
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Problems solved by technology

[0003] As a general choice of incident light source, the LED light source emitted by the LED light source has a wide spectral range, and the LED is not a monochromatic coherent light source, resulting in inaccurate blood oxygen saturation measurement values, large drift, and poor consistency

Method used

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  • Oxyhemoglobin saturation detection device

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Embodiment Construction

[0015] The advantages of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0016] refer to figure 1 , is a schematic structural diagram of a blood oxygen saturation detection device according to a preferred embodiment of the present invention. In this preferred embodiment, the blood oxygen saturation detection device includes two independent light sources, which are respectively the first light source emitting red wavelength light—red light LED and the second light source emitting infrared wavelength light—infrared LED. The spectral range of the light emitted by the red LED and the infrared LED is relatively wide. Therefore, a red band-pass filter is arranged on the optical path of the light emitted by the red LED, and an infrared filter is arranged on the optical path of the light emitted by the infrared LED. A band-pass filter configured so that the red light emitted by the first light source pas...

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Abstract

The invention discloses an oxyhemoglobin saturation detection device. The oxyhemoglobin saturation detection device comprises a first light source for emitting red wave length light and a second light source for emitting infrared ray wave length light; the oxyhemoglobin saturation detection device further comprises a red light bandpass filter and an infrared ray bandpass filter; the infrared ray bandpass filter is arranged in a light path of light emitted by the first light source; and the infrared ray bandpass filter is located in a light path of light emitted by the second light source. The central wavelength of red light passing through the red light bandpass filter is 660 nm; and the central wavelength of infrared rays passing through the infrared ray bandpass filter is 940 nm. By means of the technical scheme, the oxyhemoglobin saturation detection device can restrain drifting of parameters such as the LED light source peak wavelength, the radiation flux and the color temperature; and the measurement accuracy and the anti-interference function are improved.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a blood oxygen saturation detection device. Background technique [0002] At present, the blood oxygen saturation is measured by using a finger cuff photoelectric sensor. When measuring, you only need to put the sensor on the human finger, use the finger as a transparent container for hemoglobin, and use red light with a central wavelength of 660nm and a near wavelength of 940nm. Infrared light is used as the incident light source to measure the spectral attenuation through the tissue to calculate the hemoglobin concentration and blood oxygen saturation. The instrument can display the blood oxygen saturation of the human body, providing a continuous non-invasive blood oxygen measurement instrument for clinical use. [0003] As a general choice of incident light source, the LED light source emitted by the LED light source has a wide spectral range, and the LED is not a monochromat...

Claims

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Application Information

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IPC IPC(8): A61B5/1455
CPCA61B5/1455A61B5/0059
Inventor 李晓坤徐玲
Owner SHANGHAI DRAEGER MEDICAL INSTRUMENT CO LTD
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