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A thrombus detection device and method based on venous blood flow diagram

A detection device and blood flow map technology, which is applied in blood flow measurement, diagnostic recording/measurement, medical science, etc., can solve the problems of weak signal, difficult acquisition, and inability to automatically identify feature points, etc., to achieve comprehensive information and accurate prediction Effect

Active Publication Date: 2022-08-05
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0004] In the prior art, the venous blood flow diagram technology evaluates the change of blood flow through the impedance change rate of the ascending and descending branch, but the signal is weak and difficult to collect; at the same time, the signal is disturbed by breathing, heartbeat, etc., and the feature points cannot be automatically identified after collection; Incomplete and inaccurate information for assessing changes in blood flow by the rate of change of branches

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  • A thrombus detection device and method based on venous blood flow diagram
  • A thrombus detection device and method based on venous blood flow diagram
  • A thrombus detection device and method based on venous blood flow diagram

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Embodiment Construction

[0037] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

[0038] In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

[0039] see figure 1 and figure 2 , the present invention provides a thrombus detection method based on venous blood flow diagram, comprising the following steps:

[0040] S101, using the six-electrode and venous occlusion method to perform local impedance detection on the sample limb, and obtain a plurality of local impedance signals, blocking time ...

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Abstract

The invention discloses a thrombus detection device and method based on venous blood flow diagram. It uses six electrodes and venous occlusion method to perform local impedance detection on sample limbs, and obtains multiple local impedance signals, occlusion time and release time; and detects multiple local impedance signals. The above-mentioned local impedance signal is subjected to linear detection and various data processing to obtain the corresponding blood flow map signal; the first blood flow map signal and the second blood flow map signal are subjected to low-pass filtering and maximum value detection to calculate the corresponding blood fluctuations. Speed; use the blocking moment and the release moment to perform data processing and extraction on the third blood flow diagram signal to obtain the corresponding impedance change; based on the blood fluctuation speed and the impedance change, construct a logistic regression model for The probability of blood clots is predicted, the information is more comprehensive, and the prediction is more accurate.

Description

Technical field [0001] The present invention relates to the technical field of venous impedance blood flow mapping, and in particular to a thrombus detection device and method based on venous blood flow mapping. Background technique [0002] According to the latest Global Burden of Disease Study (GBD2019), global healthy life expectancy has increased from 58.6 years in 2000 to 63.5 years in 2019, and disability-adjusted life years for various diseases and injuries have also improved significantly. While the burden of hemoglobinopathies and hemolytic anemia remains high, mortality from some hematological malignancies has shown little improvement. The inclusion of pulmonary embolism as an indirect cause of death in the burden of disease analysis further confirms that venous thromboembolism is an important global cause of death. [0003] The impedance blood flow chart is a non-invasive, sensitive and reproducible biomedical testing instrument. Blood flow charts collect bioele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/026A61B5/0531
CPCA61B5/026A61B5/053
Inventor 许川佩张弦莫宜坚陈业锴胡聪牛军浩
Owner GUILIN UNIV OF ELECTRONIC TECH
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