Method for improving detection accuracy of blood oxygen saturation

A technology for detection accuracy and saturation, which is applied in the field of blood oxygen saturation detection, improving the detection accuracy of blood oxygen saturation, and can solve the problem of low detection accuracy and so on.

Inactive Publication Date: 2011-01-12
SOLARIS MEDICAL TECH
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a blood oxygen saturation detection met

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for improving detection accuracy of blood oxygen saturation
  • Method for improving detection accuracy of blood oxygen saturation
  • Method for improving detection accuracy of blood oxygen saturation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This specific embodiment provides a method for improving the detection accuracy of blood oxygen saturation. The flowchart of the method is as follows: figure 1 shown:

[0058] First, the original signal is acquired, and the original signal is band-pass filtered. In this specific embodiment, the red light and infrared light blood oxygen raw signals are collected under the condition of small slow motion of the palm, and band-pass filtering is performed on the collected raw signals, and the pass-band of the band-pass filter is 0.5-15 Hz. The acquired original signal is figure 2 As shown, the signal after bandpass filtering is as follows image 3 shown.

[0059] Then, the blood oxygen independent component and the interference independent component are calculated, and the separation matrix W and the mixing matrix A are estimated. That is, the band-pass filtered signal is calculated based on the independent component analysis algorithm (Infomax-ICA) based on the criteri...

Embodiment 2

[0085] This specific implementation manner is roughly similar to the first embodiment, the difference is that the collected original blood oxygen signal is extracted when the palm moves rapidly. The extracted raw data is as Figure 9 shown. The band-pass filtered signal is Figure 10 shown. The independent component of blood oxygen signal and the independent component of noise obtained after ICA processing are as follows: Figure 11 shown. The two "clean" blood oxygen signals obtained are as Figure 12 shown. The two noise signals obtained are as follows Figure 13 shown.

Embodiment 3

[0087] This specific implementation manner is roughly similar to the first embodiment, except that the collected blood oxygen original signal is extracted when the arm drives the palm to move at a relatively slow speed. The extracted raw data is as Figure 14 shown. The band-pass filtered signal is Figure 15 shown. The independent component of blood oxygen signal and the independent component of noise obtained after ICA processing are as follows: Figure 16 shown. The two "clean" blood oxygen signals obtained are as Figure 17 shown. The two noise signals obtained are as follows Figure 18 shown.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for improving the detection accuracy of blood oxygen saturation. The method comprises the following steps of: first, acquiring an original blood oxygen signal and performing band-pass filter on the original signal; then, calculating the blood oxygen signal subjected to the band-pass filter by an information maximum independence-based independent component analysis algorithm to obtain a blood oxygen independent component and an interference independent component and estimating a separated matrix W and a mixed matrix A; identifying and removing the interference independent component and acquiring two paths of clean blood oxygen signals; and finally calculating the blood oxygen saturation by using the clean blood oxygen signals. By the method for improving the detection accuracy of the blood oxygen saturation in the technical scheme of the invention, the interference caused by noise during calculation of a rate value can be effectively reduced, the aim of improving the detection accuracy of the blood oxygen saturation can be fulfilled by setting and judging an accuracy value; and the method has the advantages of extracting a double-wavelength blood oxygen signal acquired under different environments on line and ensuring more stable calculation accuracy, along with low operation complexity.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a blood oxygen saturation detection technology, and in particular to a method for improving the detection accuracy of blood oxygen saturation. Background technique [0002] Dual-wavelength oxygen saturation (SPO2) non-invasive detection technology based on red light and infrared light has been widely used in clinical practice. Compared with the traditional invasive blood oxygen detection method, although the dual-wavelength blood oxygen saturation detection method has many advantages (such as convenient operation and continuous monitoring), its detection accuracy is often limited by the red light and infrared light blood oxygen detection signals. degree of purity. Because in the process of acquiring dual-wavelength blood oxygen detection signals, there will inevitably be a large number of interference components, such as movement interference caused by voluntary or invol...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61B5/1455
Inventor 吴小培刘冠聪
Owner SOLARIS MEDICAL TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap