Needle, device and method for detecting hemoglobin concentration and oxyhemoglobin saturation

Abstract

The invention provides a needle, an optical waveguide puncture device and a method which are used for detecting hemoglobin concentration and oxyhemoglobin saturation. The needle is specifically a puncture needle with a tail fiber, a micro concave mirror and an optical waveguide assembly are packaged in the puncture needle, the concave surface of the micro concave mirror is opposite to the opticalwaveguide assembly, a cavity is formed between the micro concave mirror and the optical waveguide assembly, and an opening for blood to enter is formed in the upper portion of the cavity; the puncturedevice comprises a puncture module, a signal processing module and a display module; the puncture module comprises the needle, a fixed connector and a boosting handle fixedly connected to the fixed connector; and the needle sequentially penetrates the fixed connector and the boosting handle and is fixedly connected to the fixed connector. The method utilizes the information such as light signalsemitted by the puncture device and a light absorption coefficient to calculate the hemoglobin concentration and the oxyhemoglobin saturation. The hemoglobin concentration and the oxyhemoglobin saturation of a patient can be dynamically and continuously measured in real time, and the accuracy of a measurement result is improved.

Description

technical field [0001] The invention relates to the technical field of medical optical monitoring, in particular to a needle, an optical waveguide puncture device and a method for detecting hemoglobin concentration and blood oxygen saturation. Background technique [0002] At present, there are two types of blood oxygen saturation monitoring in clinical practice: invasive detection and non-invasive monitoring. Invasive detection is to extract the patient's arterial blood and use blood gas analysis to detect it. Although this method has high measurement accuracy , but real-time monitoring cannot be achieved; the more mature non-invasive monitoring refers to the clip type, which can realize continuous monitoring, but the monitored blood oxygen saturation is systemic arterial oxygen saturation, and cannot detect venous blood oxygen saturation and local blood oxygen saturation. oxygen saturation. Determination of hemoglobin concentration is a relatively common blood test item i...

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Problems solved by technology

[0004] The traditional blood oxygen equipment on the invasive side mainly uses cyanide methemoglobin (HICN) spectrophotometry and sodium lauryl sulfate (SLS) hemoglobin determination, which not only requires in vitro detection, but also requires various chemical reagents for pretreatment. processing, more cumbersome

Non-invasive monitoring of blood oxygen is mainly through photoelectric pulse plethysmography (Zhang Hao. Research on blood oxygen saturation algorithm based on photoplethysmography [D]. Nanjing University of Posts and Telecommunications. 2018), based on the absorption of light by human blood with pulse fluctuations Changes to achieve related calculations, unable to achieve measurement of venous blood oxygen parameters

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